SCIENTIFIC ABSTRACT LAZAREV, B.G. - LAZAREV, B.I.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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'57k?'?o 69091 & Z/ i9 D S/12o/6o/ooo/ol/035/051 AUTHORS: Bovovik, Ye.S., Grishin, S.FE.ORn2/hEU'z4arev, B.G. TITLE: On the Ultimate Vacuum of Con&ensati'on Pumps-_~%___ PERIODICAL: Pribory i tekhnika eksperimenta, 1960, Nr 1, PP 115 - 118 (USSR) ABSTRACT: The present paper is concerned with the determination of the ultimate vacuum of a hydrogen condensation pump and the possibility of using liquid helium to improve this ultimate vacuum. Since it was expected that in order to achieve the ultimate vacuum it is essential to exclude the penetration into the vacuum chamber of the oil diffusion pump vapour, a special apparatus was built in which all possible steps were taken to minimise this effect. A schematic drawing of the apparatus employed is shown in Figure 1. The apparatus was placed in a 4o-litre vessel I . The vessel was evacuated by the oil diffusion pump 2 The system was isolated from the oil-diffusion pump by the liquid nitrogen cooled vapoux- trap 3 . On the low vacuum side, the oil- diffusion pump was evacuated by a two-stage mercury- Cardl/4 diffusion -jump incorporating a liquid nitrogen trap. 69091 S/120/60/000/01/035/051 pEumO;'/E314 On the Ultimate Vacuum of C6ndensation s The polished copper screen 5 1 which was in the form of a cylinder and surrounded the working region, was also nitrogen-cooled with the aid of the dewar 6 . In addition, there was a liquid nitrogen cooled venetian- blind type trap 7 - Inside the screen 5 there was a polished cylindrical screen 8 , made of copper with a Ilquid-hydrogen filled sphere 9 attached to it. The screen 8 and the sphere 9 form a fast condensation pump. The space inside the screen 8 was thus surrounded by walls cooled down to liquid-hydrogen temperatures and the rate of pumping for nitrogen within this space was 30 000 litres/sec. The sphere 10 inside the screen had a diameter of 155 m and could be filled with liquid hydrogen or liquid helium. The calculated pumping speed for n:ktrogen by the sphere 10 was 8 000 litres/Eec. The space inside the screen 8 was thus isolated from the remaining part of the apparatus except for apertures whose total areas was about 2 Card2/4 10 cm , The rate of leakage of air through these to( 69091 S/12o/60/000/01/035/051 r5goa/E314 On the Ultimate Vacuum of Condensation ps apertures was less than 100 litres/sec and hence the region inside the screen 8 could be looked upon as corresponding to the ultimate vacuum of the condensation pumps, provided the pressure outside this region was about 10-8 mm Hg. Two manometers were employed, namely 12 and 13 . In.order to reduce the evaporation of helium between the manometer 13 and the sphere 10 provision was made for a narrow copper screen 14 . The low pressures were measured with standard ionization manometers, type LM2. These manometers can measure pressures down to 5 x 10- 9 mm. HS. An Alpert gauge (Ref 3) was used to measure the very low pressures. It was found that a vacuum of 10-10 mm Hg could be obtained in all experiments with liquid-hydrogen filled condensation pumps. The lowest pressure (1.2 x 10- 10 ) was achieved after a 10-day pumping with l*quid nitrogen in all the traps. A pressure of 1.2 x 10-.L -L mm Hg was obtained when liquid Card3/4 ~K 69091 S/12o/6o/oOO/01/0351051 ER%E314 On the Ultimate Vacuum of Condensation m s helium was employed as the cooling agent. There,are I figure and 4 references, 3 of which are Soviet and 1 is English. ASSOCIATION: Fiziko-tel-,hnicheskly institut AN SSSR (Physico- engineering Institute of the Ac-Sc., Ukrainian SSR) SUBMITTED: January 19, 1959 Card 81621 S/181/60/002/06/09/0-io 1P. 82,oo B122/BO63 AUTHORS. Garber, R. I., aindin, I. A., Lazarev, B. G., Starodubov, Ya.D. TITLE- Low-temperature Recrystallization of Copper PERIODICALs Fizika tverdogo tela, 1960, Vol. 2, No. 6, pp. 1096 - 1098 TEXT: The authors of the present article studied the rderystallization of copper which was first deformed at the temperatures of liquid hydrogen and nitrogen, and was then subjected to recrystallization at room temperature. Tubular copper samples (diameters 1-5 mm; wall thickneB88 0.45 mm) were use.d. The samples were first annealed at 800 0C for 8 hours (at 10-6 torr). Special care was devoted to the perfect cleanliness of the inner wall of the tube. The sample was deformed in vacuo at.20 and 4.20K perpendicular too the tube axis until the inner walls touched, and further7 until the plastic deformation ~ = 23 %. The sample was then heated at low-*pressure, and kept at room temperature for 10 - 15 hours. Recrystallizat-ion was observed on a cut 3f the cross section of the tubes after deep etching, by using a metal- lographical microscope of the type MAM-6 (MIM-6)(Fige. 1 and 2). Small Card 112 Y 81621 ,Uow--temperature Recrystallization of Copper S118116010021061091050 B122/BO63 bridges of recrystallization grains were observed along the contact planes. With dropping deformation temperature the number of outgrowing grains in- creased. The experiments showed that copper deformed at low temperatures is well recrystallizable already at room temperatureq and that the idea of temperature threshold of recrystallization is a preliminary one, i.e., when constructing the recrystallization diagram it is necessary to consider the temperature at which the plastic deformation is activated. There are 2 figures and 6 Soviet references. ASSOCIATIONg Fiziko-tekhnicheskiy institut AN USSR, KharIkov (Physico- technical Institute of the AS UkrSSR, KharIkov) SUBMITTEDs August 11, 1959 A Card 2/2 V KOGAN, V.S~.; UZAREV, B.G.; ZHUHOV, G.S.; OZIROT, R.P. Cryostat for neutron diffraction studies at hydrogen and helium temperatures. Kristallograftia 5 no.2:320-321 *-Ap 160. (MIRA 13:9) 1. Fiziko-khimicheakiy institut im. L.Ta.larpova. (Cryostat) (Neutrons--Diffraction) GINDIN, I.A.; LAZARN, B.G.; STARODUBOV, Ya.D. Characteristics of the mechanical properties of lithium connected with lov-temperature polymorphic transitions. Fiz. met. i metalloved. 10 no.3:472-480 S 160. (MIRA 13:10) 1. Fiziko-tekhnicheskI7 institut AN USSR. (Lithium-Testing) (Metals at low temperatures) 84h27 S/056/60/039/004/045/048 5*0 0 Boo6 B056 AUTHORS: ,;'_~azarev,_ B. G., Semenenko, Ye. Ye., Sudovtsov, A. I. V1 TITLE: The Polymorphous Transformations of Lithium, Sodium, and APptaBsium. in Films Condensed on Cold-Backings - PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1960, Vol. 39, No. 400), PP. 1165 - 1166 TEXTs The authors give a report on investigations of low-temperature transformations of alkali metals by the method of low-temperature deforms tion in a highly undercooled state and on the R(T)-measarement of films. A plastic deformation of lithium and sodium at helium temperatures leads to a practically complete transition into a stable modificationj in the deformation diagram such a transition manifests itself in the form of a break. For the purpose of observing the low-temperature polymorphism the method of R(T)-measurement is more suited and more sensitivel (R - electrical resistance of the metal film). The film is produced by allowin.- a metal to condense on backings having very low temperatures. In this manner, two modifications of bismutil. ana iron and three of ber-,1-1.1ilir. Pndl Card 1/3 84427 The Polymorphous Transformations of Lithium, B/056/60/039/004/045/048 Sodium, and Potassium in Films Condensed on B006/BO56 Cold Backings gallium were discovered. The writers of the present "Letter to the Editor" employed this method themselves to investigate the low-temperature poly- morphism of Lip Na, and K. The films were condensed onto glass backings at g:20K6 and R(T was measured during heating of the films up to 200 300 K. The R~T)-curves have breaks that indicate the existence of three modifications. The RM-curve for K is given, The curve for Li fr 1600 to 170 OK shows a sharp break (experiments carried out by plastic OIIL~ 0 deformation furnished a transition temperature of about 143 -167'K). Na has a transition at-80 0K and K at -55 0-780K. For Li and Na, breaks were still found at 80 0and 40 0K, respectively, and for K at -200K. These temperatures correspond to the transformation temperatures of metals. The experiments proved the existence of polymorphous transitions in Li and Na and, besides, led to the discovery of a low-temperature transition in K. Thus, it is also proved that the temperature of polymorphous transitions in these metals drops with decreasing Debye temperature. There are 1 figure and 9 references; 7 Soviet, 1 US, and I German. Card 2/3 Card 3/3 88468 S/056/60/039/006/061/06-/' 4, 71a 0 B006/BO63 AUTHORS: Bulatova, R. F., Kogan, V. S., Lazarev, B. G. TITLE: Crystal Structure of Solid Deuterium PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, 1960, Vol. 39, No. 6(12), p. 1853 TEXT: Previous studies (Refs. 1,2) have shown -that H 2 and D2 have a tetragonal, body-centered lattice with c/a = 0.82 and c/a = 1.73, respectively. Tritium has the same structure as deuterium. The crystal structure of HD has now been studied using the same experimental arrangement as described in Ref. 1, and a brief report thereon is made in this "Letter to the Editor". Like D2 and H2' ED shows one single 5line_ in the XLray diagram. Calculations assigned ED to the space group C 4 (tetragonal and body-centered). a = 3.39 A, c = 5.86 A, c/a = 1.73 gave a density of 0.146 g/cm3 at 4.20K. This value is in good agreement with results obtained by other research workers. There are 6 references: 5 Low'ar C ar d 1 /if/ 20799 S/li3ij6l/003/003/025/030 807, "', 19 B102/B205 AUTHORS: Gindin, I. A.,_Lazarev, B. G., and Starodubov, Ya. D. TITLE: Discontinuous character of plastic deformation at low temperatures PERIODICAL: Fizika tverdogo tela, v. 3, no. 3, 1961, 920-925 TEXT: The discontinuous character of plastic deformation of crystalline bodies has been known long (A. F. Ioffe, Ehrenfeet, M. V. Klassen- Neklyudova), and the various effects of discontinuous deformation have been investigated many times. In the authors' viewo however, this problem has not yet been studied in detail, which is the purpose of the present work. Elongation and compression diagrams of the following metals were recorded by a machine equipped with a sensitive, rigid dynamometer between 1.4 and 770K and at a deformation rate of 30 A/sec; aluminum, beryllium, bismuth, tungsten, iron, cadmium, potassium, lithium. magnesium. molybdenum, copper, sodium, nickel, tin, lead, antimony. silver, mercury, tantalum, titanium, chromium, cesium, ,,inc, zirconiur, -and uranium. In this connection, it was necessary to cladijify the deformati~)n jumps and to make a detailed study of Card 1/*,~ 20799 S/18 61/003/003/025/030 Discontinuous character B102YB205 a new kind of faults which are important at 4.20K and below this temDera- ture. The principal results of these investigations are published here. The discontinuity of the low-temperature deformation is essentially caused by: 1) mechanical twinning, 2) polymoil.ious transitions, 3) peculiarities of the plastic deformation of high-purity metals (mechanical recrystal- lization, sliding along the grain faces, twinning), 4) relaxation proces- ses with a regular increase of jumps. These four cases were investigated individually. Figs. 1, 2, and 3 show the diagrams of deformations on mechanical twinning (1), polymorphous transition (2), and of relaxative JUMPS (3). These diagrams were recorded by the computer machine. Ad 1: The authors studied the extension elongation of coarse-grained iron of 99.99% purity at 770K. The jumps are only caused by twinning processes. The kind of the effect depends largely on the grain size. Fine-grained material showed no twinning jumps. Jumps of this kind can thus be prevent- ed by an adequate thermomechanical treatment of the material. Ad 2: Jumps due to polymorphous transitions occur in the compression of Li or Na. Fig. 2 shows diagrams obtained for Li (purity of 99-93%) at 20 (1), 4.2 (2), and 1.40K (3). The transition Into the stable low-temperature modification takes place after a certa-fn-.degree of deformation has been Card 2/8 S/16 61/CW903/025/030 Discontinuous character B102YB205 reached, and is accompanied by the occurrence of considerable faults. These Jumps occur only if the deformation takes place below the temperature of'the polymorphous transition. Ad 3: High-purity metals, such as Al (99-99416) and Fe (99.991/Q show mechanical recrystallization within the range of helium temperatureBt i.e#p grains are formed, which are larger than the initial ones. The process is somehow similar to mechanical twinning. Ad 4. Whereas the effects described above occur only under certain conditions, all the inetals investigated show deformation jumps at sufficiently low tempera- tures and a corresponding stress strain, which are due to relaxation processes. These are characterized by a certain rule (Fig. 3 shows it for Fe (99.990io' pure) at 4.20K~ They are due to the fact that elastic energy accumulates and is released at a certain value. For some of the metals examined here, a table contains the temperature and the degree of deform&- tion at which the elongation process takes place discontinuotaly and regular- ly. In some metals, an increased elevated strain stress corresponds to an elevated temperature (e.g., in the case of Na), but there is still a tempera-~, ture threshold above which no such jumps will appear any longer, not even at maximum stresal (for Na, e.g., above 200K). The rules governing the jumps are observable both during compression and elongation. There are 7 figures, Card 3/8 20799 S/16 61/003/003/025/030 Discontinuous character BI 02YB205 Itable, and 18 references: 16 Soviet-bloc and 2 non-goviet-bloc. ASSOCIATIO.N:..Fiziko-tekhnicheakiy institut AN USSR E24ar'kov (Institute of Physics and Technology, AS UkrSSR, Kharlkov) SUBMITTED: August 10, 1960 z zoo - see Figs. 2. and 3 O-j Card 4/ a YESELISONS B.N.; UZAREV Bfj,,-SHVETS) A.D. - Obtaining lower than r K. temperatures by-pumping-off liquid helium vapors with an adsorption pump. PrIb.i tekh.ekop. 6 no-5:160--162 S-0 161e (141RA 14:10) 1. Fiziko-tekhnicheakiy institut AN USSR. (Low temperature engineering) s/126/61/011/001/005/019 Elll/E452 :AUTHORS: Gindin, I.A., Lazarev, B.G. and Starodubov_, Ya.D. ~_.'_"~.-!.TITLE: Low-Temperature Metallography of Lithium 'PERIODICAL: FIzika metallov I metallovedeniye, 1961, Vol.71, No.1, pp.46-51 ':TEXT: The authors point out that no information is yet available on mic-rostruct%Aral changes during martensitic transformation of ~alkali metals/tin cooling to low-temperatures and heating or after ~.'~._..~Ildeformationalll polymorphic transformation; or on the mutual effect, of transformations on microstructure. In their present .:investigation, which Is a continuation of their work in this field, ~the authors have studied by low-temperature metallograph the microstructure of lithium and its changes in thepolymorphic- ''transformation temperature region. Polished sections were ~prepared as previously described (Ref.1). For preliminary low i 'atemperature investigations, previously prepared lithium specimens '(Ref.1) were used; these had been stored in liquid nitrogen and photomicrographs corresponding to this temperature could then be obtained directly. For other temperatures, a special cryostatic :apparatus;was constructed in which the required specimen temperaturei Card 1/ 3 s/l26/6i/oii/o6i/oO5/Ol9' Eni/o452 ow-Temperature Metallography of Lithium was-obtained by suitable selection of thermal resistance between it and a massive copper heat conductor whose other end was immersed in cooling liquid. The temperature of the 7 x 7 x 2 mm specimen, which could be microscopically observed, was measured with a copper-constantan thermocouple or, for below 20*K, with an indium resistance thermometer. The.whole was inside a vacuum jacket connected to a separate pump and containing activated charcoal. The optical system was part of a type nMT-3 (PMT-3) apparatus with a photographic attachment. Microphotos show the original room temperature microstructure and also needles of the hexagonal modification and a chain of martensitic needles with a grain- boundary fracture. The extent of martensitic transformations does not exceed 25 to 30% and volume changes produce shear deformation. A.furthbr figure shows the changes from the original microstructure at a given point on the section during repeated cooling and warming. Preliminary plastic deformation at 78*K was found to impede formation of the hexagonal modification on subsequent cooling below the martensitic point:. on the microstructure. wavy slip lines are visible which represent regions of localized face-centred cubic Card 2/3 ....... . .......... S/126/61/oll/o' 01/005/019 Eiii/E452 ,11,,.,~'Low-Temperature Metallography of Lithium structure. This effect is similar to that in body-centred cubic m ctals (Ref.11). The work provides some confirmation for the.- authors' previous conclusions (Ref.1) on the behaviour-of- .!The low-temperature improvement of the mechanical propertl this metal is attributable to the fine dispersion of the tiorofphase -s --tructure produced through "deformational', polymorphous ch, -~I*--There are 6 figures and 11 references: 8 Soviet and 3 non-Soviet. ASSOCIATION: Fiziko-telchnichoskiy institut AN UkrSSR ~Physicotechnical Institute AS UkrSSR) SUBMITTED: June 26, 1960 Card 3/5 S/126/61/012/oo6/007/023 E193/E383 AUTHORS: Gindin, I.A., Lazarev, B.G., Starodubov, Ya.D. and Lazareva, M.9.- TITLE: Mechanical properties of sodium in the range of low- temperature polymorphic transcformations PERIODICAL: Fizika metallov i metallove'deniye, v. 12, no. 6, 1961, 846 - 852 TEXT: As is the case with Li, the body-centred cubic crystal structure of Na undergoes a pgrtial change to close.- packed hexagonal on cooling below 35 K. A so-called "deformation" modification of this metal can be obtained by straining it plastically at temperatures below 8o 0K and the object of the present investigation was to check whether the effect of low-temperature polymorphism of Na on its mechanical properties is similar to that observed earlier by the authors (Ref. 1: FMM, ig6o, lo, 472) in Li. 0 To this end, tensile t-ests were carried out at 1.06 - 290 K on polished and etched test pieces of 99.8V. pure Na and the following properties were Card 14 q s/126/6i/c i/oo6/007/023 Mechanical properties of .... E193/E383 determined.- 0.2% proof stress?, UTS; true tensile strength? elongation; reduction in area and the strain-hardening coefficient. In addition, the microhardness of each fracture specimen was measured at 77 0K, side-by-side with that of a pilot (i.e. untested) specimen. Typical results are reproduced graphically. In Fig. 2, the elongation (6, % - lefthand scale) and reduction in area (Y 9 % - righthand scale) are plotted against the test temperature (OK). The temperature-dependence of 0.20.0' proof stress (cY' ), UTS and true tensile 0 2 strength (W Is reproduced in Fig- 3. Finally, in Fig. 4 U 2 0 the m1crohardness JH, kg/mm measuired at 77 K !-- plotted against the temperature K) to which the test piece had been cooled prior to hardness test-~ the lower curve relates to pilot specimens, the upper cur-ve representing results obtained near tIhe neck of fractured tensi.le-lest pieces. Several conclusions were reached. Card 2/0~~ S/126/61/01'2/oo6/007/023 Mechanical properties of E193/E383 1) Anomalous variation of mechanical properties of Na in the sub-zero temperature range is associated with polymorphic transformations taking place at these temperatures. 2) The martensitic transformation which on cooling takes place in Na at about 350K is reflected in a sharp increase in its yield strength, UTS and microhardness. 3) A minimum in the elongation versus temperature curve is situated in the temperature range within which the deformation- induced polymorphic transformation takes place. The rapid Increase In elongation on cooling from 70 to 1.6 OK can. be attributed to the deformation-induced change from body-centred cubic to close-packed hexagonal crystal structure. 4) The low-temperature polymorphIc transformations (particularly the martensitic transformation) bring about an increase in the degree of strain-hardening and.uniformity of the plastic flow of Na. There are 4 figures, 1 table and 12 references: 6 Soviet-bloc and 6 non-Soviet-bloc. The four latest English-language references mentioned are: Card 340 s/i26/6i/oi2/006/007/023 Mechanical properties of E193/E383 Ref. 2.- C.S. Barrett - Phys.Rev.; 1947, 72~ 245; Acta crystallog., 1956, 9, 671-. Ref. 8g D. Hull, H.M. Roserberg,~ Phys.Rev.Let., 1959, 2, 5; Ref. 10: D. Hull, H.M. Rosenberg Phil.Mag., 1959, 4,:303-, Ref. 1.2a D. Gugan, J.S. Dugdall, J. Can-. Phys. Rev.4 1958, 36, 12~8. ASSOCIATION% Fiziko-tekhnicheskiy institut AN UkrSSR (Physicettechnical Institute of the AS UkrSSR) SUBMITTED- MaY 3, 1961 Card 4/#q 25934 S/05 61/031/007/017/021 B104YB 206 AUTHORSt Lazarev, B. G., and Fedorova, M. F. TITLEt High-vacuum adsorption pump for hydrogen eVacuation PERIODICALs Zhurnal tekhnicheskoy fiziki, v- 31, no. 7, 1961, 864-866 TEXT: Activated charcoal cooled to liquid hydrogen temperature adsorbs large amounts of gaseous hydrogen. This fact is utilized for the adeorpticn pumps described here. Two types of these pumps are shown in Figs. 1 and 2, identical parts being designated analogously. The adsorbing elements awe cooled by liquid hydrogen flowing in two coaxial cylinders (2). The activated charcoal is placed on the inner walls of the hollow cylinders. In order to prevent too fast hydrogen evaporation, this part is cooled by liquid nitrogen which is inside the hollow space (1). Parts (1) and (2) are made of highly polished copper and the inner side of part (3) is also polished. The valve (4) is connected to the vessel to be evacuated, valve (5) serves for pre-evaouation. The pumps described are started in the following waj: The preliminary vacuum pump is switched off after pre-evacuation to 10- mm Hg) liquid nitrogen is conducted into the Card 1/4 25034 S/057J61/031/007/017/021 High-vacuum adsorption ... B104/B2o6 initial stage and subsequently li uid hydrogen into the final stage. The vacuum thus obtained lies at ~10-~ mm Hg. The pumping rate amounts to 400 I/seo at 8#10-8 mm Hg and up to 900 I/sea at 10-5 mm Hg. The efficiercy of a pump of type no. 2 as a function of the pressure is graphically shown in Fig. 3 for combined operation (hydrogen and nitrogen) and for operation with nitrogen alone. The pumps described were also successfully used for helium evacuations For further development of these pumps and determina- tion of their characteristics, it is necessary to study the adsorption isotherms of a number of gases over a wide temperature range at pressures from 10-5 to 10-8 mm Hg. A report on these studies will be given sbortly. The authors thank V. V. Zolotarev for the construction of the pumps. There are 3 figures, I table, and 4 Soviet-bloe'references. ASSOCIATIONs Fiziko-tekhnicheskiy institut AN USSR Khartkov (Physico- technical Institute, AS UkrSSRO Khartkov) SUBMITTEDi September 10g 1960 Card 2/4 ;4,71400 AUTHORS: TITLE: PERIODICAL: 89199 S/056/61/040/001/004/037 B102/B204 Koganq V. Bet Lazarev, B. G., Bulatova, R. P. Differences in the lattice constants of neon isotopes Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 40, no. 1 p 1961 , 29-31 TEXT: The authors know of-only one single case in which the attempt had been made to find differences in the lattice parameters of elements heavier than helium'* On Li 6 and L17 a difference of 0-0015 A was found to exist, a value which is near the limit of measuring accuracy. Theoretically, the differences of the lattice parameters of the isotopes of noble gases, i.e. the differences of the molar volumina in the solid phase have repeatedly been investigated; for neon, one obtained the following at OOK: AV/V a 0.6%. An experimental study was the purpose of the present paper. By means of X-ray analysis, the strDeturesof Ne20 (99% pure) and of Ne22 (98% pure) were examined. The specimens freed from air and helium impuri- tiesp were obtained in form of polycrystalline layers, viz., the neon isotope was precipitated from the gaseous phase onto a copper capillary Card 11~ 89199 S/056/61/040/001/004/037 Differences in the lattice ... B102/13204 tube, which was cooled from the inside by means of liquid helium. The experimental arrangement for the X-ray examinatior of such a specimen is described in Ref- 5. A typical X-ray diagram recorded by means of this device, on which also the Cu lines are visible, is shown in the figure. The X-ray diagrams were photometrized, the distances between the maxima of the interference lines were measured with an accuracy of +0-03-�0-05 mm. The corrections for sample thickness were carried out according to Kurdyumov. The results of the studies are shown in the table; the data of the lattice parameters are accurate up to + 0.004 A. Both isotopes have face-centered cubic lattices; for the ligt:t- isotope, a - 4-471A , and for the heavy one, a - 4.455 Al AV/V - (1-1+0-5)~. The line intensities found in the X-ray diagrams deviated considerably from the calculated values. Thus, in Gu - K. and Fe - Ka radiations, the intensity of the (200) lines compared with those of the-(111) lines were considerably lower than calcu- lated, the intensity of the (222) line of the Fe - Ka-radiation was higher. This is explained by the fact that the neon precipitated from the gaseous phase upon the capillary tube has a texture, in which the [111] axis is radially orientated toward the capillary tube. The intensity ratios of the same interference lines - Ihkl (Ne 22 )/lhkl(Ne 20) is higher and grows more Card 2/0 3 d9.,Yy S/056/61/040/001/004/037 Difference's in the lattice 'Bld/B204 quickly with*increasing scattering angle than would have been theoretically expec ted. By way of a summary it is said that the'AV/V-value obtained shows good agreement.with theoretical results considering the energy.differences of zero vibrations. By far greater differences of the molar volumes of the Ne isotope compared to the.Li isotopes - are ascribed tothe difference In the-binding forces in the Yi.eon'and lithium-lattices. B. Ya. Pines is mentionbd -in the.paper. There are I figure, I table, and 8 references: 2 boviet-bloc and non-Soviet-bloc'. ASSOCIATION: Fiziko-tekhnicheskiy institut Akademii nauk Ukrainskoy SSR (Institute of Physics and Technology of the Academy of Sciences Ukrainskpya SSR) mega SUBMLITTED: July 6, ig6o nnn Ne",. .Card 3 At j1&,Yz(11 jveoya Ne12 89205 00 S/05 61/040/001/011/037 B1 02YB204 X~j /00 ~3 .t4f, ;Z 1,V0' (/0 7, AUTHORS: Lazarev, B. G., Semenenko, Ye. Ye., Sudovtsov, A. I. TITLE: Modifications of beryllium and iron in films, condensed on a cold backing PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v- 40, no. 1 , 1961 , 105-108 TEXT: It is well known that some metals, at least bismuth and beryllium, do not become superconductive in massive form down to 10-2 OK. In form of thin films condensed at low temperatures - and that at relatively high temperatures (Bi -60K, Be -80K).-they becomes however, superconductive. The superconductivity of beryllium films and their temperature dependence were investigated in order to find out whether the occurrence of new modifi- cations might be responsible for this effect. As e.g. in the case of iron a low-temperature polymorphism is knowni also the electrical conductivity of Be films was studied. In this connection, parallel studies were car- ried out with Cu films which had no low-temperature polymorphism. The films were measured at 10-7 mm Hg in a helium cryostat. In the same device, Card 1~ 89205 S~05` '0~040/001/011/037 Modifications of beryllium ... B 027B'20 also the temperature dependence (1.23-3000K) of electrical conductivity was measuredl the heating rate of the films Was 20K/min. The beryllium films showed, as had already been found in preliminary investigations (Ref. 4) atw3OOK a polymorphic transition, and at 8-30K superconductivity. The superconductive phase remains conserved when the film is heated up to 300K. Within this range (8-5-300K) the temperature dependence of the eleo- trical resistance was studiedl these experiments showed that only when heated to 600K, the superconductive phase (R(T) - const) vanishes complete- ly. As the nature of the film is known to depend on whether condensation occurred from the solid or fr *om the liquid phase (in the former case the film consists mainly of diatomic molecules, and in the latter an atomic film forms) it was studied to what extent this produces any effect upon superconductive properties. Films were produced by slow evaporation (from solid Be) F-nd by quick evaporation (from liquid Be) and R(T) was studied. The films of the first kind (condensed on N2-cooled backings) most prob- ably had a second superconductive modification, whose critical temperature was about 60K and less, which, however, remained conserved up to 1300K. Also heating of the film to room temperature during 360 hr did not change anything in this effect: With cooling, superconductivity again occurred at Card t, ..S/056/61/040/001/011/037 Modifics,ti~oins.of beryllium B102/B204 about'50K. Fig- 4 shows the R(T)-curves of various Be films. -The-film -?ns:a mixture from condensed onto a helium-cooled backing from the solid-phase two supercondiictive modificatio'ns. The first had a critical temperature of -8-40K (curve 1), remained'c'onserved up to 300K, and was bompletely vanished at 60OK; the critical temperature'of the other modification was about^160K, and with short-,(1-2 1r) heati'ng to room temperature (curves 3 and Y) this modification remained conserved; it was, hovever, considerably le 'ss stable ...than in the casb of condensation to a nitrogen-cooled backing, but remained superconductive also up to about 1300. The study of an iron film, condensed 'on a helium-cooled backing showed that at 400K a polymorphic transition occurs. A copper film produced on the same conditions, however, showed no such transition.. The e#stence of one- or two low-temperature modifications is today known of the following metals: gallium (2), beryllium (2), bismuth (1), iron (1), sodium (1), lithium (1), and potassium (I). There are 6 figures and 9 references: 7 Soviet-bloc. ASSOCIATION; Fiziko-tekhnicheskiy institut Akademii nauk Ukrainskoy SSR /4/10 (1e 7 13,%.T) 20456 Ll Slr,056/61/040/002/010/047 2~1700 10 55~ B!02/B202 AUTHORS: Kan, L. S., Lazarev, B. G., Makarov, V. 1. TITLE: Superocnductivity of' tin ~nil indi.um under pressure PERIODICAL: Zhurnal eksperimental vnc,,,j i --oreticbeskoy fiziki, v. 4o, no. 2, 196-1, 1~/7 ~. 49,4 TEXT: In previoue papers (ZftETF, 14v 46j, '1944 and 18, 825, 1948), the authors described studies of the eTT,?rt, of F-ressure ~n_ the criti,~.al tem- perature of fir) and Indium a" 17`0 ard ',,4';0 k 'nm2. They observed shifts 4 T of lesa than 0.10. -f dT_ lill', i.~:; a5suffied to proceed linaarly, the followJnis late-, are obtained.: C%Owo '.5 deg/atm for tin, and (-4.6 + 0.2+0-5 dsg/atr. for .3'n recen t times, the correct- ness of th9ge values has been doubted. For thi.5 reason, th-3 measurements were rev4~,toA in the range of from 0 *,o ' 7~0 kg/Ins2. For indium, T (I (p) was I ine ar al so. in t h is rangi .. ar 3wa.3 found t ha- .1 T0/dp --- (-,4.4 + 0.3) ?10 deg/atm iEee solid line it- Fig.":., 11:n., n,~-*ever, showed a lir_ea_r Gard 1 20456 S/0~6/61/040/002/010/047 Superconductivity of ;in B102/B202 Course of T (P.) with &r dp --ol-4.4 0.2 J:q.~ 1~ 0~dog/atm in the range of 0 0 from 0 ~, 100 atm,. At higher tempe .ratl~rkn, a deviation from linearity was observed (see Fig.2, dashed curve,, obtained from two tin spE~imens t~ and o; the dashed line ccrrespcnds dT,_/dp + 0.2)oj 10 deg/atm.). The measurements were made by the differ&nt`~tl and the ice method (the latter in the range 500 - 1200 atm D-, 7,h-j range of from 800 to 1730 4dO2 dT /dp wa.- (--4.6 + 0.2)'~;PO_"deg/atm. Sirce this curve runs in paralell C with the indium curve, -'it can be assumed that between 100 amd 800 atm a transition takes T)Iare from onr- q-t:c-aight line to the other. The effect of pressure an superconductivity ha3 hitherto not been fully explained. The new theory of 5uperconductivity gJlves the relation -T - 9 exp(:-2/gV), where 0 is the Debyjoi,~temperatureq g Ihe electron-phonono interaction con-- stant, and %, th;, electron density. Compress~ori on all sides of the me- tals leads to an increase of 0 ana, thus, to a linear increase of T C . To explain the course of T,(P), thE pressure-dependent charge of the electro- Card 2/t 204,56 S/056/61/040YO02/010/047 Superconductivity of tin B102 B202 nio properties of the metal must be studied. It is of interest that In with linear T (p) has a most simple Fermi 8ur face (closed, almost sphe- rical)p whereas thallium (like tin) with ito complex function T (p) has an- anisotropic Fermi surface ("'corrugated" planes).-There are 2 figures and 8 references: 5 Soviet-bloc and 3 non-Soviet-bloc. ASSOCIATION; riziko-tekhnicheskiy inatitut Akademii nauk Ukrainskoy SSR -(Institute of Physics and Technology of the Academy of Sciences Ukra'nskaya SSR) SUBMITTED: September 1, 1960 Card 31t KOGAN, V.S.; LAZAREV, B.G.; OZEROV, R.P.; ZHDANOV, G.S. Neutron diffraction study of the crystalline structure af solid hydrogen and deuterium. Zhur. eksp. i teor. fiz. 40 no.4:1022-1026 Ap 61. (KERA 14:7) 1. Fiziko-tekhnicheskiy institut AN Ukrainskoy SSR i Fiziko-khimicheskiy institut imeni L.Ya. Karpwa. (Neutrons--Diffraction) (Low temperature research) (Hydrogen crystals) (Deuterium crystals) q'S110 0 11 S/120/62/00cr/6 V048/048 E032/E114 AUTHORS: Yesellson, D.N., Lazarev, B.G. and Shve-ts, A.D. TITLE: A simple lle~) cryostat P3RIODICAL: Pribory i tekhnika eksperimenta ~rxo-3, 1962, 198-199 TEXT: It is pointed out that existing Fle3 cryostats capable of producing temperatures doi%-n to 0.3 OK are rather complicatpd because they incorporate diffusion pumps and/or rotary pumps to pump the vapour above liquid helium and thereby reduce the temperature. The present authors have used a charcoal adsorption pump to remove the vapour arid thereby have simplified the construction and succeeded in producing temperatures down to 0.34 01K. The device is shown in the figure, in'which: 1 - charcoal pump; 2 - thin-4alled stainless steel tube; 3 -- reservoir containing lie3; 4, 10 - cylinders for storing helium gas; 5 - vacuum jacket; 6 - valve connecting the charcoal pump 1 to the reservoir 3; 7 - dewar with liquid helium at 1.3 OK; 8 - container filled either with He3 - He4 solution' (7-4'~~ He3) or pure He4; 9 - not given; 11 tube for removing helium gas. CbLrd 11V Z_ A simple He3 cryostat S/120/62/000/003/048/048 E032/E114 The charcoal pump is in the form of a brass cylinder containing about 30 9 of activated charcoal which is held in position by a pair of brass grids. The temperature of 0-34 OK is reacl'ied after about 30 minutes. The heat leak of the system is about 600 erg/sec. - There is 1 figure. ASSOCIATION: Fiziko-tekhnicheskiy institut, AN USSR (Physicotechnical Institute, AS Ma-.SSR) SUB11,1ITTED': November 29, 1961 Card 2/1z S/lf35/62/007/007/003/010 1048/1248 AUTHORP_; Ko (,-.n, V. S. _ La- arev, B.G. , and Bulatova, R. F. TITLE: The phase dia ram of the system liquid-solid formed by th-~ hydro~gen isotopes. PEZ-HIODICAL: Ukrainslkyy finychnyy zhurnal, v.7, no.7, 1962, 732-736 TEXT. The phrase ding-r-_m of the system H2-D2 at temperatures from 4 to 200K was obtained LlSin,~' X-ray-an-ilysi~; of the polycrys.- tP.11ine specimen (at ~~ 4.20K) thermal analysis of the mixture (at 14-200K). Both H and D have a tetrai3onal lattice but the axis rFLtio c/a is .." 1 in the cnse of H and ~~l in the case of D. The solubility of H in the D lattice at 4.20K is 20% by vol., that of Card 1/2 S/185/62/007/007/003/010 1048/!248 The phase dia,~,,ram of... D in -the H lattice is 151j'o by vol. A hori,_,~ontal peritectic section on the solidas carve, :Lo-,- the cry'stalli7ation of mixtures cont~-ining 26-521/' H2 (by vol.) w-s confirmed experimentally. The existence of the large two-phqse region extendin,-; from about 1%6 to 8011b' D2 (by vol.) is an experiment--l confirm-ntion of the theory of N.N. Lifshits .and G.N. Stepznova (ZhEITF 33, 4859 1957). In the case of the H2-D2 system)-the critical temper:,.ture is so low that this brep.kdovin occurs simultaneously with the cryst-~llization. Preliminp-ry experiments for the determination of th~: mutual solubility in the system D2-HD at 4.20K, lead to the assumption that H2 and HD form no continuous solid solution at any temperature. There are 4 figures. ASSOCIATION: Fiviko-tekl-ini.cheskiy institut AN USSR (The Physico- TechnicP1 Institute of the AS UkrSSR, Kh,-.rkov) Card 2/2 h4245 S/056/62/043/006/059/067 B141/B102 - AUTHORS: Lazarev, B. G., Lazareva, L. S., Ovcharenko, 0. N., 1FaYs-ak-o-~a-,--A-.-A. TITLE: Effect of universal compression on the temperature of the supercondileting transition of Nb Sh 3 PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki,'V. 43, no. 6(12), 1962, 2309-2310 TEXT: Nb 3Sn shows a very small isotopic effect, in which the critical 1/2 -1/12 temperature T or is not proportional to M Mit to M The pressure 1 2 applied was 1730 kg cm , which resulted in.s. decrease of T cr by (4-5 ~t 0-5)10- 2 degi i.e. aT cr/ap - -(2-5 � 0-3)-10- 5 deg/atm. The pressure effect is of the same sign as in the majority of superconductors and of the same amount as in good superconductors,.wherein T or is almost proportional t -1/2. = -15.5-10 3 gauPs/deg. Thus Nb Sn o M ('Hcr/T)TCr 3 Card 1/2 S/056/62/043/006/059/067 Effect of universal compression... B141/B102 belongs to the alloyed type superconductors. -6hen dT cr /dp and dH cr /dT are known, the jump of the thermal ex-pansion coefficient and of specific heat during transition can be estimated. The values obtained, however, are too high so it is concluded that dT Cr /dp and dH.,/dT hold only for very small Nb Sn volumes. The same app Ilies to the other properties of this super- 3 conductor. For Nb Sn and similarsuperconductors the magnetic field must 3 1 have very great depth of penetration. There is 1 figure. ASSOGWION: Fiziko-tekhnicheskiy institut Akademii nauk Ukrainskoy SSR (Physicotechnical Institute~'of the Academy of Sciences Ukrainskaya SSR) SUBMITTED: September 12, 1962 Card 2/2 V hh246 S/05 62/043/006/061/067 3141YB102 AUTHORS: Lazarev, B. G., Lazareva, L. S.,. Sudovstov, A. I., 'A TITLE: Jump of the heat expansion coefficient of Nb Sn for .,aperconducting transition PERIODICAL: Zhurnal eksperimental"noy i teoreticheskoy fiziki,'v- 43, no. 6(12), 1962, 2312-2313 TEXT: For measuring AV/V at T cr (- 1-80K), a highly accurate apparatus was designed whose sensitive part is a coil of bimetal strip 55 cm long. One end of this is stationary, and the other can ti4rn when the volume of one metal changes with respect to the other, the torsion corresponding to the quantity to be measured. In this case the coil consisted of niobium coated, with Nb Sn (0-05 mm). The jump of the expansion coefficient of Nb 3Sn at 1-5-10-~L~ 10~) deg- 1 was apparently as large as that of tin and lead. The theoretical value,determined thermodynamically, would appear to be higher by three powers of ten than that measured. This indicates that for Nb 3 Sn Card 1/2 Jump of the heat expansion... S/056/62/043/006/G61/067 B140102 and-similar superconductors the magnetic field has Ereat depth of penetra- tion. The coefficients of expansion and compression of Nb 3Sn and Nb also viere measured in the temperature range 3000 to 21K. The expansion coefficient of Nb 3Sn was found to be only slightly larger than that of Nb, e.g. by 3-10 -6 at 3000K and by 2-10-7 at 2-40K, the thermal and elastic properties of Nb 3Sn and Nb are very similar.~ There is 1 figure. AS50CIATION: Fiziko-tekhnicheskiy institut Akademil nauk Ukrainskoy SSR (Physicotechnical Institute of the Academy of Sciences Ukrainskaya SSR) SUBMITTED: September 12, 1962 Card 2/2 KOGPSj V.S.; KRIVKO, A.I.; U~,.B.Gq LAZAREVA, L.S.; MATSAKOVA, A.A.; OVCHARZNKO, O.N. Constitutional diagram of the system Kh - Sn. Fiz.met.i metalloved. 15 no.l:10-145 Ja 163. (MIRA 16:2) 1.,Xhartkovskiy fiziko-tekhnicheskiy institut AN UkrSSR. (Diffusion coatings) (Niobium-tin alloys) (Phaige rule and equilibrium) GINDIN, I.A.; LAZAREV, B.G.; KHVFDCHUK, I.R. Dilatometric investigation of the low-temperature defc-r,irW.r.rt transition to lithium. Fiz. met. I rwtalloved. 16 no.5-793,794 N 163. (PURA 17-2) 1. Fiziko-tekhnicheakiy inotitut AN UkrSSR. 5/056/63/044/002/015/o65 B102/B186 AUTHORS: -Lazarev, B. Q..-Lazareva, L. S., Makarov, V. I. TITLE: Features of the pressure dependence of the critical temperature of thallium - PERIODICAL: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 44, no. 21 1963, 481-482 TEXT: The pressure dependence of T cr was measured for annealed sink;le crystals of pure thallium (R J.20K /R cr-~' 2.10 -4) in the rance --'rom zero to 2 1730 kg/cm , and the curve obtained was completed with the help of data by Jennings and Swenson (Phys. Rev. 112, 31, 1958) and Bowe.-, -and TorleS (Proc. Roy. Soc., 254, 522, 196o). The following were noted; linear increase of Tcr with p in the range 0 - 15 00 kg/cm2 (dT or /dP -:~,(O-4 2; + 0-1)-10-5 deg/atm; rapid increase between 1500 and 173b~kg/cm decrease at p > 1730 kg/CM2. This complex behavior is possibly connected with electron transitions in the conduction electron spectru,-., and could. Card 1/2 S/05yo' 3/044/002/015/06 5. Features of the pressure 3102 .1 86 be explailied by changes of the Formi surface topology. Takin6, into consideration the difference in electron-group state detisities at the Ferii-,i surface, -where the lower sta.e density, corresponds to the hisher elect ron-phonon interaction constant g-m-172, the cont2~.ibution of the z;;nall broup (1-41 o f f ~* M, ) is estimated. With ~'i A 2= M1/62' it is found t 0 - 1 C";' ' 0' Q2 that ~e, could aviount 0 1 . There is I figure. ;~,SSOCI,tTI,Z Fizik3-tekhniches'-iy institut Arkadem-li nauk Ukrainskoy Ssi (Physicotechm-cal Institute of Uhe Academy of Sciences M:rainskaya SSR) SUBYI'TTED, 10,21jte~niiber 12, 1962 Card 2/2 T, 13836-63 EPF(c)/EWT(1)/EPF(n)_2/BD3 AFFTG/A,9D/SSD Pr-h/Pu-h GGI~~WgWIJP(C) A ION BR: AP3003159 3/00%/630"/006/218712189 'AUTHOR Yesel son,, B. j Kovdrya Lazarev, Bo Go Yu. Z. :TITLE: Direct measurements of the linear flow veloclIZ of a film of He II :SaMCE: Zhurnal eksper, I teor. fiziki, to no. 61 1963., 2187-2189 ,TOPIC TAGS: liquid helium,, flow rate, lov.tempemtureo ABSTRACT: Experiments Vere set up for obtaining detailed information on the linear flow velocity and the formation of He II f'jlm . The experiments consisted essentially of measuring the temperature at two different points ~along the flov and determining the time dependence of the potential difference between the -two -resistance- thermometers. The enTeriment-s, were carried out in 'the te*erature inverval 1.50 to 2.13K. The ~AnperatureVvas maIntained constdnt Vithin 0.00001 *K, The resultant flow rate increased vith temperature reaching 100 am/secat I.S*K. Since this exceeds the critical veiodity as obtained in some investigations., some explanation In advanced for this high rate. In particular, It is suggested that the vortices do not have time to form during the timc of flow of-the film., vhich is about 0,2 see at 1 5 OK Ne tak ~Vikhaylo*'. op ortunity to thank V. Do Krasnikov for preparirpg the a;~Iifer afid P g ths wire of lead brasso Card for.providin ACCESSION NR: AP4009135 S/0056/63/045/006/2068/2069 AUTHOR: Lazarey, B._G.; Khorenko, V.. K.; -Korniyenkos L. A.; Krivko, A. I.; maTs`Mr5-v!,-" -."-A:.'; Ovcbarenk6,--O, No TITLE: on the - 3. ayered and filamentlike structure of the supercon- ducting alloys Nb-zr and Nb-Ti SOURCE: Zhurnal eksper. i teoret..fiziki, v. 45, no. 6, 1963, 2o68- 2069 TOPIC TAGS: superconducting alloy, niobium zirconium alloy, niobium titanium afloy, layered structure, filament structure, electron mi-. croscopic investigation, plastic deformation, critical magnetic field, solid solution, saturated solid solution, critical current density ABSTRACT: Data are presented on elebtron-microscopic observations of thin films and filamentary'systems of tracks in alloys of Nb with 2 at. % Zr and of Nb with 66 at. % Ti. Samples of t~: original 5 P alloy were compared with samp, les reduced in thickness:by rolling from 2-5 mm to 0.05-0.5 mm at room temperature. When.*ob8erved by Card 1/2 ACCESSION NR: AP4009135 cathode etching, only a few 'undefor&ad- samples showed a thin fila- mentlike precipitate structure, but the deformed samples showed the presence of a developed system of layers even at a magnification of 450. Unde 6 the electron microscope, se,-;tions cut at a very small angle (S 3 for Nb-Zr) showed 'more and more fine elements with in- creasing magnification. The alloy contains a whole set of layer -. thicknesses from several times ten Angstrom up, which are not unifor- mly distributed but come In packets. The conductivity drops to its initial value after annealing at 1000C. This demonstrates experi- mentally that the increase in the current density of the supercon- ducting current (from 100-1000 to 20000-40000 A/sq.cm.) in the cri- tical magnetic field is due to the developed system of precipitated layers and filaments. ASSOCIATION: Fiziko. -tekhniche5kiy institut AN UkrSSR (Pbysicotecbni- cal Institute, AN UkrSSR) SUBMITTED: 27Aug63 DATE ACQ: 02Feb64 ENCL: 00 SUB CODE: PH,, MA NO REP SOV: 007 OTHER: 003 Card 2/2 L 12581-Q.. EPR/EPF(c)/EviP(q)/E,'IT(M)/EWP(B)/BDS AFI,"TCIASD Pr-l~/ -.Ps-4 VNl/JD/WH/JG/K/14LK(a) . ' - 1 .1- ACCZSSION.NR: AP3007610 S/0286/63/000/010/0072/U,72--:- AUTHOR: Va ay u-ti na k-i y-7--B 7.1f. _;.*K,o_S__&,_n -,,-V. ~So Lazargy.~_Ba Laza-re"va-9 ~L-* TITLE Ti.nplating knaLh i t e Class'48, No. 15'475-2 SOURCEt.,Byul. izobret.'i tovarny*kh znakov, noo 10-, 1963, 72 TOPIC TAGSt graphite tinning, graphite tinplating, va:cuum tinninto vacuum tinplatink, carbide forming additives, tin coat ABSTZACT: A pat.ent has been issued r a method of tinning graph-, ite parts by immersing them in moltei tin. To obltain a high- quality tin coat, the tin-min ad ouX in vacuum at' g process is carri4 iOOOC with a maximum 'of.0.01% janrsten .Am, titanium-2-7 V molybdenu -gircgnium, or other carbide,-forming metal.s added to the tin bath. ASSOCIAT, N: none SUB14ITTED: 2IJun62 DATE ACQt 14oct63 ENCLs 00 SUB CODE: ML NO REF SOVs 000 OTHER: 0100 I / 1. _ 214 4 .. V~~- ACCESSION NR:. AP4025913 S/0056/64/046/003/0829/0830 A AUTHORS: Lazarev,-B. G.; Lazareva, L. S.; Makarov, V. I.; Ignat'- 'yeva, T. A. TITLE: Effect of impurities on the superconducting transition tem- perature in thallium, 1- SOURCE: Zhurnal eksperimentallnoy i teoreticheskoy fiziki, v. 46, 4 no. 3, 1964, 829-830 -TOPIC TAGS: thallium, superconductivity, superconducting transition, superconducting transition temperature, impurity effect, impurity v'alence, impurity atomic radius, electron mean free path, thallium ;_superconductivity, thallium superconductivity pressure variation 'ABSTRJkCT: The effect of impurities having various valences and atomic radii on the superconducting transition temperatute (T of C) thallium is. irivestigated, in view of the established marked dif- Card ACCESSION NR.- AP4025913 .6rence in pressure variation between thallium and other supercon- ductors such as lead, indiumi and aluminum. An impurity with va- lence lower than thallium (Hg, Cd) lowers Tc4r while one with higher LI valence (Bi, Sb) raises it. Differences in the atomic radius like- wise -have a different effect on T In this respect thallium. is no different from' other superconductors, and the impurities affect T. c in-accordance with.the differences in their electron free paths, valences, and atomic radii. Orig. art. has: 1 figure. S A SOCIATION: Fiziko-tekhnicheskiy institut AN UkrSSR (Physicotech-' :nical Institute, AN UkrSSR) ~SUBMITTED: 27Aug63 DATE ACQ: 16Apr64 ENCL: 01 SUB CODE: PH. NO REF SOV: 001 OTHER: 004 2 ------------ ACCESSION NR:., AP4025914 S/0056/64/046/003/0831/0832 AUTHORS: D'yakov, 1. G.; Lazarev, B. G.; Matsakova, A. A.; Ovcha- renko, 0. N., F TITLE: Critical mqgnetic fields of superconducting niobium films j SOURCE: Zhuinal eksperimentallnoy i teoreticheskoy fiziki, v. 46, no. 3, 1964,11 831-83A m TOPIC TAGS: !niobiu , superconducting niobium, superconductivity,- critical magAetic field, fibld depth of penetration, niobium. film, superconducting niobium fJ.1m, superconducting bulk niobium, critical I superconducting temperature ABSTRACT: Thin (20 and 50 micron) superconducting niobium, films r we;,e produced by condensation on pyrex glass or on mica with silver contacts prepared beforehand.; The results are of interest since they permit ~n estimate of the depth of penetration of the field in Card ACCESSION NR: AP40-25914 ni6bium (_1074 cm, IbLbout oA. order of magnitude higher than in "soft..:: su&rconductors) add show that the high critical fields in niobium alloys are due to.thin Eiuperconducting paths in the alloys. The precautions taken to reduce'the effect of gas impurities are briefly de9cribed. The critical field for the 50 micron film was about 25iOOO Oe, about 10 times that for bulk niobium. The field for the 20' micron fAm is niuch higher but could not be measured with the available external magniDtic field (22,000 Oe). The transitions tem- i pe'ratures for the 20 and 50 micron films were 6.5 and 7.5K respec- i tively as against 9.1K for bulk niobium, indicatiiig that the films were still not sufficiently pure. Orig. art. has: 1 figure. q ASSOCIATION-' Fizilio-tekhni6heskiy institut AN;UkrSSR (Physico- .technical instituted', AN UkrqSR) SUBMITTED: 27Aug63' ACQ: 16Apr64', ENCL: 01 SUB CODE: PH NO REF SOV: 004 OTHER: 004 Caro 2112- EWT(1)/E4T(m)/T/ ',EWP(t)/ET1 A ACC NRz AT6015695 (IV SOURCE CODE: UR/0000/65/000/000/0018/0022 AUTHOR: Lazarev, B. G. ; Semenenko, Ye. Ye. ; Sud,ovtsov, A. 1. ; Kuz ORG: Physicotechnical Instituto, AN UkrSSR (Fiziko-tekhnicheskiy institut AN UkrSSR) TITLE: Effect of the degree of"2orkrln rties of metals &4a the superconducting prope SOURCE: AN UkrSSR. Issledovan.-Lye energeticheskago-spektra elektronov v metallakh (Study of the energy spectrum of electrons in metals). Kiev, Izd-vo Naukova dumka, 1965, 18-22 TOPIC TAGS: thallium, tin, superconductivity, temperature dependence, magnetic field measurement, resistivity ABSTRACT: The dependence of temperature in critical magnetic fields (Hk) and resisti-. vities was studied in 100 1 condensed films of Tl-,Tnd- Sn. Amorphous structures in the condensed films representing extreme departures from crystalline equilibrium were re- stored by annealing, whereby the effect of lattice order on free electron conductivity was exhibited. As-condensed fi3xis had the largest values of Hk when measured as a func.. tion of temperature from 4.2 to 1.50K. Specimens annealed between 25 and 2500K had decreasing values of N'. All curves obeyed the relation k , , - Hit H& L 3'~~918-66 IJKc) JD/GD L 38546-66 E'WT(M)/EWP(W)/T/EWP(t)/ETI IJP(c) JD/JG/GD ACC NRi AT6014753 SOURCE CODE: UR/0000/65/000/000/0(Y76/0082 AUTHORS: Kogan, V. S.; Krivko. A. I.- Lazarev ..G.; Lazareva. L. S.; Matsakova, Lj:La~B~ A. A.; Ovcharenko, 0. N. ORG: none TITLE: The phase diagram of the niobium-tin system SOURCE; Soveshchanive Po metallovedenivu i metallofizike sverkhprovodnikov. lst, 1964. Metallovedeniyo-i--m-,3tallofizik-a sverkhprovodnikov (14etal-lography and physics of s 3m superconductors); trudy soveshchaniya. Moscow, Izd-vo Nauka, 1965, 76-82 TOPIC TAGS:. superconductivity, superconducting alloy, tin base alloy, niobium alloy x,ray analysis, spectrographic analysis, critical magnetic field, intermetallic cQmpound, alloy phase diagram AB PTRACT: This paper is a continuation of an earlier work by V. S. Kogan, A. I. KrivIco, B. G. Lazarev, L. S. Lazareva, A. A. Matsakova, and 0. N. Ovcharenko (FL,24, 1963, 15, 143) in which it was found that specimeAs produced by holding niobium in molten tin 4 temperatures above and below 850C differed in their superconducting properties.\bihe superconductivity transition temperature for specimens produced at 990C and 12500 is 18,OK and 18.1K, respectively (see Fig. 1). For diffusion layers formed at below 850C, the superconductivity transition temperature is reduced; the lower T k' the lower the temperature of formation of the layer, For specimens h L 38546-66 ACC NRt -AT6014753 Fig. 1. Critical magnetic field "k as a function zo of temperature for diffusion layers of Nb3Sn obtained at temperatures of 8W-1-250C, Lis 16 17 M obtained at above 850C, Tk agrees with the known value for Nb 3Sn. X-ray studiesr,"K confirmed that only the cc-mpound Nb3Sn is formed when specimens are prepared at over 850C. For temperatures below 850C, the diffraction pattern shows that ITb2Sn 3 is formed. It was concluded that in spocimerm preparad at temperatures below 850C there is present a very thin interlayer beneath the now phase. The formula NbSn is ascribed to the now compound. The superconductivity transition temperature of ihe NbSn was found to be 2.7K. In other papers'the new compound has been given the C.,d 2/3 L 38546-66 ACC NRt AT6014753 formula NbSn2 or Nb J 2Sn3. The authors thank L. 11. Mosova for conducting the quali- i tative spectral analysis. Orig. art. has: 5 graphs, 1 table, and I photograph. I SUB CODE: 2.1,,20/ SUBM DATE: 23Dec65/ ORIG REF: 002/ OTH REF: 018 I Card L ";8537-66 EWT (m)/T/E7.-1P(w)/9-,P(t)/ETI IJP(c) Jo AMIr, D ACC NRj AT601-4756 SOURCE COLE: Uil/0000/65/000/000/0089/0090 AUTHORS: Lazareyj_P.,G.; Lazareva, L. S.; Matsakova, A. A.; Ovcharenko, 0. 11. ORG: none TITLE: The suporconductivit,71 of-13Ga SOURCE: Soveshchaniye po :metallovedeniyu i motallofizilce sverkhDrovodnikov. ist, 1964. meEiilo-vedeniye i metallofi-Z--Ika sverkhprovodnikov (Metallography and physics of metals in superconductors); trudy soveshchaniya. Mloscow, Izd-vo Nauka, 1965, 89- 90 TOPIC TAGSz superconductivity, critical magnotic field, hydrostatic pressure, 'gallium compound, vanadium compound, intermetallic compound ABSTRACT: The superconducting properties of the intGrmetallic compound V3Ga are studied. The compound was prepared by arc smolting in an argon atmosphere. The specimens were in the form of wafers with a thickness of /%/ 5 mm. The effect of hydrostatic pressure on the transition temperature was determined. The critical magnetic field as a function of temperature was also studied (see Fig. 1). The specific-heat discontinuity and the discontinuity of the thermal expapsion coef- ficient could not be determined from the data of the work. ACC NR: AT6014.756 Fig. 1. Critical magnetic field H k as a function oftempera~ure near T k for V3Ga. 20M loot so# t 0 Orig. art. has: 2 graphs. SUB CODE: 11.9201 SUBM DME: 23Dec65/ ORIG REF: 0051 OTH REF: 003 4 "' ),, 9 r-PT 691de Ga 0 Card L 3893-66 EW(l)/EWT6n)/ER(t)/ZdP(b) IJP(c) JD/PG ACCESSION NR:. AP50180tiS UIR/0020/65/1 'V3 001/0074/0075 AUTHOM 'Lazarev,,D. 0. (Academician AN UkrSSR); JAzareva L t, ev T. IgIna 0v MR TITLEs On the change' Of the topology of the Fermi surface In thallIum under the influence of impurities SOURCEs AN SSSR. DoklaQy., v- 1631' no. 1., i965p 74-75 TOPIC,TAGSt superconductivity, thal]LIum., impurity effect ABSTRACT: P~, authors observed experimentally a singular behavior In the tempera- P'~4 ture.ofthj-~'&~rconductlng transition (TC) of thallium. (change in the number of valleys on the Fermi surface) In Investigations of the Influence of impurities on the pressure dependence of Tc. The study was made by investigating the joint in- fluence of impurities of different valences and of the pressure on Te of tbaUium. The results show that the impurities whose valence is larger than that of thallium (BI) decrease the positive pressure effect with increasing concentration,, causing the pressure to become negative starting with a certain value of the concentration (0.2 at-%). In the case of an impurity of lower valence (Hg)p the positive pres- sure ei4ect increases at :Low -concentrations, With further increase of the concen- trationp the positive effect decreases and becomes negative at fto.9 &t#% ft. The Card 112 -q gq- L 3893-66 ACCESSION NR: AM18016 results are interpreted so an experlmental con i tion t t one of the valleys of f rma ha "The the Fermi surface Of tballiUM vanishes under the influence of an impurity, authors thank y. G--W'Yefttar for a discussion." Orig. art. bast 2 formulas and 1 figure, ASSOCIATIOR: Miko-tekbn-tcheakiy institut Akademil nauk UkrSSR (JWqjcote0Sjcaj_', --rnatituteliUR UkrSSp) SMITTEDS, 10065 IMLI 00 on CoDst gg IM REP BOY t, - 007 OTMMRt 005 Pid, L 14074-66 EWT(1)/FWT(M)/EWA(d)/EIP(t)/EWP(z)/EWP(b) IJP(c) JD ;ACC NR: AP6003242 SOURCE CODE; UR/0020/65/165/006/1275/1277 ,AUTHOR: Lazarev, B. G.. Semenenko, Ye. Ye.; Sudovtsov, A. I.; KuzImenko,-V M !ORG: Physicotechnical Institute, Academy of Sciences UkrSSR (riziko-tekhnicheskiy :institut Akademii nauk SSSTI.) W JITLE: Maximum critical nm.gnetic fields in superconducting metals ;SOURCE: All SSSR. Doklady, v. 165, no. 6, 1965, 1275-1277 tTOPIC TAGS: critical magnetic field, indium, tin, thallium, superconductivity, i ;crystal lattice distorti ion ';ABSTRACT: Lattice distortions are used ?ri~erion for megsuri~ng the critical Magnetic fields and temperatures in ind&A tWbnd thallituedpecimens produced by !condensation-on a glass sul6trate cooled by liquid helium IThe critical magnetic 'field in the lon ' I normal electrical resisi-w.__ gitudinal direction was determined lance of the specimens at this field intensity. The,highest critical magnetic fields :are observed in freshly pmicipitated-specimens, where'the lattice is most strongly idi storted. The critical megnetic fields in well annealed specimens is close to that..-- Card 1/2. - -------- - -------- ------ UDC:.-, 537.312.62~ L 14o74-66 ;ACC NR: AP6003242 :of a conventional single crystal specimen. It was found that the maximum magnetic fields are independent of the thickness of the specimen. When the resistivity is high, the curves for critical magnetic field strength as a function. of resistivit-j Jn indiuwgre identical in form, showing saturation at a resistivity of :9-cm (which corresponds to the mean free path of electrons, i.e. about 100 interd- J: 1tomic distances). Similar behavior was observed for theAnaximum critical field'in tin. The critical field increases linearly in thallium'and shows no tendency' to Isaturation. The.data indicate that a metal formed by condensation on an extremely icold substrate displays maximum distortion of the crystal lattice. Therefore the imagnetic fields of (20-25).103 oersteds for indium and (40-45).103 tin' oersteds for lare the maximum fields for these metals. Orig. art. has: 1; figures. ;SUB CODE: 20/ SUBM DATE: 06Sep65j ORIG REF: 0081 OTH REF: 007' Card 2/2 ACC-NR: - AP6018939 SOURCE CODE: UR/0126/66/021/006/0828/0832 AUTHOR: Kogan, V. S.; Lazarev. B. G.; Matsakova, A. A.; Ovcharenko. 0. N.; -Yakimenko, L. F. ORG: Physicotechnical Institute,AN UkrSSR (Fiziko-tekhnicheskiy institut AN UkrS ,� R) TLE: The width of tile homogeneity region of intermetallic phases in the Nb-Sn and _VT_I G a t e m SOURCE: Fizika metallov i metallovedeniye, v. 21, no. 6, 1966, 828-832 TOPIC TAGS: superconducting compound, niobium alloy, binary alloy, tin containing alloy, vanadium alloy, gallium containing alloy, intermetallic compound, compound homogeneity region ABSTRACT: Experiments have be made to determine the width of the homogeneity region of intermetallic phases~4'ormed in the Nb-Sn and V-Ca systems, i.e., systems whose components have widely different melting temperatures. Nb3Sn and V3Ga intermetallic compounds were obtained by diffusion of Nb39n by hblding an Nb specimen for several hours in molten tin at 1000C, and V.3Ga by holding a vanadium specimen wetted with gallium in a vacuum at about 1200C. X-ray diffraction patterns of the diffusion layer on vanadium showed that the surface layer contacting gallium qnd the inner layer adjacent to vanadium had equal lattice parameters, 4.819 ' 0.002 A. The temperature of transition to the superconductivity state of V3Ga was found to be Card 1/2 UDC: 548.53 L 31037-66 ACC NRt A116018939 14.44K with a transition zone width of 0.2K. These data confirmed that the diffusior zone consisted only of V3Ga compound of stoichiometric composition. Similar results were obtained for Nb3Sn compound. The layegs adjacent to Sn and Nb had the same lattice parameters, equal to 5.288 ' 0.001 A, which showed that the homogeneity region of Nb3Sn compound is also very narrow. A wide homogeneity region. reported in some earlier works for the refractory metal-rich phases in alloys whose components have widely different melting temperatures is presumably a result of tested alloys being in nonequilibrium state owing to a low diffusion rate of these phases. Orig. art. has: 3 figures. (MS) SUB CODE: II/ SUBM DATE: 26Jul65/ ORIG REF: 004/ OTH REF: 005/ ATD PRESS2V t 2a254,-46_ lip(c), GO/JD ACC NRs AP6010974 SOURCE COM UR/0056/66/050/00310546TO-55( AUTHOR: Laz Lazareva, L. S., Makarov, V. M.:-Tereshfilaq N'. S. J~: J4 - ORG: Pbysicotechnical Institute, Acadeqr of Sciences, Ukrainian SSR'-(Fiziko-tekhniche- skiy institut Akademii nauk Ukrainskoy SSR) TITLE: Effect of-impurities on the variation of the superconduc'ting transition tem- peratu of thallium th pressure SOURCE! Zhurnal eksperimentallnoy i-teoreticheskoy fiziki, v. 50, no. 3, 19661 546-550 TOPIC TAGS: superconductivity, superconductor, critical temperature, transition temperature, thallium, indium ABSTRACT: The. effect of indium impurities on the dependence of the superconducting transition temperature (T (p)) of thallium on pressure was investigated. It was found that the effect or Indium (which has the se valency as thallium) on the T (p) dependence of thallix= is similar to that of antimony and bismuth (the valence o~ which is gre*ater than that of thallium). For thallium alloys containing 3.5T and of indium, the dependence Tk(p) is linear, the values of dTk/dp being -1.2.10-5 and 1.6-10-5 6g/atm, respectively.~--These values are close to that for pure thalliun (dTk/dp 1.4-10-5) at pressures from 20,000 to 28,000 atm.. The rd 1/2 1ACC NRI AP6037060 SOURCE CODE: UR/0056/66/051/005/1328/1331 1AUTHOR: Kogan, V. S.; Lazarev, B. G.; Yakimenko, L. F. ORG: Physicotechnical Institute, Academy of Sciences UkrSSR (Fiziko-tekhnicheskiy institut Akademii nauk UkrSSR) l ITITLE: X-ray diffraction.analysis of the structure of niobium-base superconducting alloys ,SOURCE: Zhurnal eksperimental'noy i teoreticheskoy fiziki, v. 5 1, no. 5, 1966, 1328-1331 TOPIC TAGS: niobium base alloy, zirconium containing alloy, titanium containing alloy, superconducting alloy, alloy structure ABSTRACT: A series of niobium-zirconium-titanium alloys containing 5-50% zirconium and 10-20% titanium has been investigated. It was found that all the as-cast speci- mens had the structure of a high-temperature cubic 0-phase. Annealing of-specimens containing up to 10% zirconium at temperatures up to 600C did not cause structural changes, which indicated that the 0-phase was in equilibrium. Annealing of the alloys containing 20% zirconium at 550-600C caused a decomposition of the 0-phase. In alloys containing 30% zirconium, the decomposition began at 450C, and annealing at 560C produced an equilibrium structure consisting of 6- and a-phases. Orig. art. has: 4 figures and 1 table. (TD] SUB CODE: ll/ SUBM DATE: O8J0n66/ ORIG REF: 001/ OTH REF: 003/ ATD PRESS: 5109 Card ~,CC NR. AP7001543 SOURCE CODE: UR/0020/66/171/003/0552/0554 AUTHOR: Gindin, I. A.; Starodubov, Ya. D.; Lazareva, M. B.; Lazarev, B. G. (Academician AN UkrSSR) ORG: Phys i-co technical Institute Academy of Sciences LLkrSsA (Fiziko-tekhnicheskiy institut Akademii Nauk Uk%-S59) TITLE: Low-temperature recrystallization of copper rolled at 77 and 20K SOURCE: AN SSSR. DoklQV, v. 171, no. 3, 1966, 552-554 TOPIC TAGS: copper,low temperature deformation, &&pqi&rY deformation, recrystal.lization, recrystallization temperature, recrystallization activation energy, CJAO~ ABSTRACT. Spedinens of 99.984'-pure. copper with an initial grain size of 100 p were rolled at 293, 77, and 20K with a 10% reduction per pass and a total reduction of 90%. The specimens were rolled at a speed of 10 mm/min and imnediately annealed at 293-468K. X-ray diffraction pattern examinatic-n showed that low-temperature deformation decreased the grain size, produced noticeable microdistortion in the lattice, and significantly reduced the temperature of the beginning of recrystalliza-:,- tion. Copper deformed with a 902 reduction recrystallized even at room temperature. The lower the defor*mation temperature, the sooner the recrystallization begins. For instance, in'copper rolled at 20K the recrystallization begins after 19 hr, while in copper rolled at 77K-after 2.5 =nth. With decreasing deformation tempera- Card 1/2 UDC: 539.2 ture from 293 to 20K, the act'ivatica energy was found to decrease f rom 33 to 18 kcal/g-atom. This fact, and also the lowering of the recrystallization temperature, is caused by an increase in the latent deformation energy and by a 'higher metastability of the crystalline body. The low-temperature recrystallization makes it possible to investigate the metal recriyatallization, taking into account the temperature conditions of the activation work straining, and to develop metal structures with special physical properties. V. V.- Kozinets and M. P. Starolat are thanked for their assistance in the experiments. Orig.;.art. has: 2 figures. SUB CODE:11,.IIIAISUBM DATE: 15Ju166/ ORIG REP: 008 Card ACC NRi AT7004209 SOURCE CODj~% UR/d AUTHORSt Kogan, V. S.; Vasyutinskiy, B. M.; Lazarev, B. 0. ORG: none '.TITLE-. Studying phase diagrams with the use of diffusion layers SOURCE: AN SSSR. Institut metallurgii. Eksperimentaltnaya tekhnika i metody vysokotemperaturnykh izmereniy (Experimental techniques and methods of high temper- ature measxirement),. Moscow, Izd-vo Nauka, 1966,, 121-127 TOPIC TAGS: metal-phase system, metal vapor deposition, metallographic examination, nickel, chromium, molybdenum, niobium, tin, iron, tantalum ABSTRACT: The obtaining of metal phase diagrams by a multilayer technique is described. The technique, an extension of the work of L. S. Falatnik, V. M. Kosevich, and L. V. Tyrina (FMM, 1961, 11, 229), consists of condensing an appropriate metallic vapor mixture and of subsequeWUy preparing a thin polished section from the condensate. This technique was applied to the study of the phase diagrams of the following systemst Cr-Ni, Ub-Sn, Fe-Ta, and Mo-Cr-Ni. The experimental results, shown graphically (see Fig. 1)., were published earlier in three comrmnications by B.1-11. Va-syutinskiy and V. S. Kogan (FHH, 196o, 9, 564). In addition, x-ray powder pictures were taken and the microhardness of the specimens was determined. The results are shown graphically. It is concluded that the condensation-diffuaion layer Card 1/2 ACC NR: Izal r- H Zvi N JO b 20 zo~ K 43 Cr M(T-1 Ma I 1~ -4 BO 169 Z40 JTZO 441 600 89 160 Z#O J20 4109 Distance.from, surface, mierqns. Fig. 1. Hicrohardness curves (a) and composition of the solid function (b) 101 the system Mo-Cr-Ni. as a function of the distance from the surface layer of a Specimen technique is not capable of yielding the complete phase diagram for the system and that it requires, for successful applicationg zome preliminary knowledge about the . system. The Nb-Sn system was studied by V. S. Kogan, B. 0. Lazarevj, L. S. Lazareva', A. 1. Krivko,, and A. A. Matsakova.. Orig, art. has: 5 graphs. SUB CODE: 1l/ SUBH DAM none/ ORIG REFz 012/ OTH REF% 006 a Q" L Card X IT' 41 404 1!L1 out'. 00 PROPIA1195 wait .00 4202, HULTM"ASS AUTOVATIC WDM OF THICI DOMP STEUB. 9.V. ad Us" , Me (Avtolonnoe Delo (Welding)# Lyabaveldi e7 of *04 , p Feb, 1949, luu?). The 416" we investigated for three different .00 nif lov-ml~ steels (an* 0o15% C, 0."$ Sie O.,tO% Me 0.029% 8, 1 , 1 0.022% P, 0.50% NO) wing three different types of ooatod electrodes. Oytiu= oonditions of operation and influence of individual factors, sob as the from of the seam, oompoaftione -;so of s1sotrode oores and coatings, *to, are Indicatedo COO too age 1 Joe tie 0 1,171RAT01 CLASSIPKATION I L A AITALLUIPGKAL Lin- boo _ _ Scv-g-1, I .. . I I... ... 114.1 doming 1.10" 41. *.. ant 931411 04 Gmv M U Ail: 10 - ; on r" U, g,al ;011 a,; 11--N L S "" a rm 0 -8 a I W Im 5 A331 v 0 all 1 . 0 0 0 0 0 0 0 0 0 0 0 o o o 1 0 0 : : 0 40 0 0 0 0 0 * 0 k 0 0 * 0 . -. ~j 1 0 0 0 0 0 o 0 0 0 0 a 0 0 0 0 of 0 0 0 0 0 0 0 e * * * 0 0.0 a 0 0 0 0 0 6 .. 0 Is "'IDMISOVIIII is 31 3) 11 14 0 is v Is ig A) 4j it a 'e 4-1 --1 06 -QC W a A S a Ooo 41, 1 go -44, 40 A! -of The AutowAdc Wdd* of Var Ukk XdW Web witil A Hftvy Am K. N', Lhilmvskii and If. 1. Laxamy, 1A% 1- -00 06 Ir k-t .... ~ DrIo. 11149. No. 1. flit. #41). 11014"l1). An m-mllt 1. timt-vt of art ill~vvlijlatiwl u( Illim militswrip,l-are It, -Witim %lilt IwaNy am of tut-wi-I'llil. I.jilrr xtml plat- at(ention wax lisid to the ineumv of the Alm as this off-Is Ih., ivinxitimni ImIrth of w ; this Iongth is incrotmA by ' . , - if &rl I i i t th O i fl ll h ~ " '-n II Iken dl 1l e wt s 41" l IIIK tIx. ognip y relinnful-til to allow lilt- onfumeed stabifitv if am voltow and dl rilm-rap, obt air" I by , orm-t clwi-f thi j; 9 c on IN- .~wfiu* of the smit were proth"I try Iltmed wiviow inelits of hilidi % W-tiaity and molidWati,m tmoliciratumm. The itioal mtWattory wrhlA were obtainmi with either ##r two j flvv%-~ ba,mir the following rr.jA,-ti,v- coo 46-5. 44.0%; Mill) 33-11, 43-11%; Ca Itotal) 5.33, 4-04~,,; x* IN go Of 1-3, 'It ACKIIIIIII Alld IM46"I'llil 1 '18, 1 '18% ; 1190 vo 0 2-5. Plat" oil), 71t, and lift min. thick virm, tt*,l ill Z: ~Ilj- tests. T'-vt pi-rs were ,,it I'mill %'&riOUX 1000itiOlIA in tho so-aiii fir,r anxIsAim. viscitil examinAtion, uO zoo I.-lid, stiff illifiaet test*. Yor lilt, 'Affirm x1ei-Im Ole I.-AN wml evirriM out .1 ~'jl' lerriller"Itup. Ittil for the litolvWmIlli) ' ' mit"4 thert- were additional tests at 3SO and .5111 i . %Visit IN, I'MillWatively tm)mu platea lim"I MKI or -i 700 Inill.). no g~healinjz was llc~eftaary to avoid ~rmckitltr' but i i i ld I W h h I 6 t a volis at ou * eat" t" a lm liairta s mt 2511- 4' l f hli - ie urr me . og. 4. K. cz 00 it 77, - - ----- cc n- 'i; - - tj IT 43 t( 1, a 1mr 14 1 i1 4 5, to h I NA 0 0 0 0 0 0 0 0 0 0 0 too'o *Soo* go*,**** 0 10 it it 11 94 1) I~ 1y It 11 0 At J4 a iv, u A, 6 L D I x 0" 10 _u 00 Oe 00-3, 00 00 go 10 0 0 0 so 00 o; ! - 09 .31 490 to it 1) 11 m 111 16 if m if Teeltnolocy of Autonnatic Welding n( 'Mick Steel 1 S_M Under l"Jus A. Applied to a lilah-Prr-um llull,-r. (fit 1411"t.m. 1 1, 1. kvartw anti 1. 1). 1 1, -),-. km Achwi I -nn,w Deb, %V,.) Ink %'v p)jj). p, 1().1(j. Alwwr wa.% thmnnghlv Inveitigated 'for itc,r-) of 70-1XI min. thit-lint-4. Showt; that lons,61ndinal anti vircuns- flTrIttial warrva (Nunpletely sall'ifying the requirrint-n1% of 11101-prewirt- Imilm are OlAuhull un sn'll st"I using hiRli %1n Fluxes anti gingle-pasi. antoruatic welti- Ing with ef4itrotfra of if),- mme sivi-I of 10-nnn. 4113"Ider. Exim-rinu-nial data art- (almlatt-it. :J At I L .1 TALLOMAAL ------ ...- An or I mr Im 0 't KID I, I ;K4 u IT TV it It u IT it K U tT 0 o o wo 0 0 0 0 0 * 0 0 0 0 0 0 0 0 0 0 0 00 0 OJO-6 0 0 0 0 :000000 9 10 0 0 0 0 0 0 0 9 0 0 0 0 000000 00 Age, -60 11, I 00 So 0 00 1;0 0 WO 0 Zoo to 0 01-0 0 * e-Ve 0 o * -." -0 0 01:: 06, ;logo 0 4t0 0 0 00 0 o00 0000 0 1 1 a ~ 4 1 $ 9 10 11 v 11 14 4 16 if is lop In n It is x111 0 39 Air III Al III A A C A-f.~J --- i-M-A-A-L 9.5X. v It X T- -I M-m_-cr_ it 00 Amoninfir Weldinx of Two~ltly Slirets Clad Sleh go -oHKhl2" SIM. (In 111m,mill K. V. L%lilm"Lik "nj 00 J,wrsin- M-h, I NVA,ling). Jmi 1141). *0 f~l Ptments ttuhl of (III, ilwvv for lo-vwlmm shrel with xtainl~,slcrl Aidifing. Charjettiislics of Welds obuintA ji-v Isse of threl. I~p- of chl-tro,l" or,, 0 IA'IILAf'-tL Slux-id) featurel (If the appar'llill arv de- WAWA alul illn'tral(A. Oplillmill W.-I'ling tontlitimil 0 Me tAbuLt,%L 00 a 000 IS ~00 00 t* 0 SllAIIU-01,KAI, ILITIOATUAll CtASSIOKATIOld go.IIV woo 449- 41- 00 u SS 41, 10 &Siit "traitor" ait it It X 4; ii~ I If 14 0 0 0 010 * 0 0 0 o 0 0 0 0.0 o 0 o 0 0 0 0 0 0 * 0 0 0 ojo 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 LAZAREV) B. I. USSR/Eagineering - Steel, Clad 'Welding, Steel Jan 50 "Automatic Welding of Stainless Clad Steel," Prof K. V. Lyubavskiy, B. I. Iazarev, Engr, Cen Sci Res Inst of Heavy Mach Bldg, 10 pp "Avtogen Delo" No 1 Conducted experiments to develop welding procedure for clad sheets with face layer of chromium steel. Gives data on chemical composition and mechanical properties of welded joints executed with preliminary welding of face layer using electrodes which insure obtaining austenitic structure. Results permitted introduction of automatic welding method at Mach-Bldg Plant imeni Ordzhonikidze. PA 160T15 6997* Aultentatir Thr.-r-Pho- Arc 'Arldlieg or Thick "ISM" s?"I. (fit jfil~~Iallj K. V. I'mi.n4n. ILZ-14kf~uo- Al h.g"Im"o. M I'l, 22, Nov, 197, 1. 1" Iv lar,mbldion of thm Inallml Into ntdn,-I~. 4,1w"Mil) 1w fit,- Immin,tion nf thick-uJil"I %V'"4N .11111 '110111.1f "'I"tro,floll %I'll tabl"', anti dmgrmll, Ir TS227.L66 TEA3i3`-X-" ialu."M B:DDIK iii J 7 L"ZA.71EV) 3. 1., Kand. of Tech. sci., TO-,~OFOV, -ard. of Tcch Sci., L'~~'JIJI-IKIY, J., :jr. of Tech. Sci., and L-, F. I., 11C, i D :4-~- L. ~"-Pi - O'l y 3"1" "K i i SV' 'FA 111BTE11ITI"M 3-,'AL...Y TZ!-1PE1U"fU-,UX;1 Neldin~~ of Austenitic Ste Is Desi-~--ned to .-.ithstan-I ~iigh Tem,f~eratures). In K. V. Lyubavskiy, ed. Novoye v tekhnolo,,ii :;vac,ki (Innovations in ti.ie Welding Technique). i-iAShG1Z, 195~`)- P. 3-29. The authors present an interpretatlion of the data obtained in resear-,-h conducted by r.he Central Scientific itesearch Institute of Lachine-j'uilding TechnoL,-gy (TsIN11IT19AS11) on arc welding of au,;tenitic steel used in for,7,im"?, casting and tubing. The temperatures in various places in the weltled parts are observed. The crystallization which occurs in welded metalS, the mechanical properties of welded sections, and the structure Df the metal in the sea:.,, after weldin.a are discussed. J-he use of electrodes and and tneir ef;ects on various austenitic steels unler diCt'erent con~-Iitions in weldin.- and on welding parLs are described. The authors recoii,,mend certain electrodes for welding austenitic steels used in tubing, for~.rinE and casting. :-T'wenty seven pictures and graphs, 9 tables. 3 Russian references (1936-19")'l). 1/1 TS227.L66 7--] LLA ~,-i Kand of Techo 6ci., and LY-UiJ1AV1';K1Y, K. li., Or. of Tcch. Sci. SIVYL~~111 Vys'~)Kopi=ffiloy STILL1 DLY!i ~--OSUDOV VYSOK060 DINLE,41Yk (Welding of High-Strength Steel Vor Thick-walled Ves.,els under High Pressures). In K. V. Lyubavskiy, ed. Novoye v tek-imolo..,ii svarki (Inriovati~ms in the Iel.llinj~ Technique). i-AShAZ, 1955. P- 56-81. The authors present the exhausting! material on ri-search carried out by them (and other scienta) on low-alloyed steels to be used in tAe constr-t~ction of thick walled vessels under nigh prossures. The 16G'il".-type steel is the miain subject of -'U.r,is report. its experLaental weldinvs with zu;'~e Fts-6 and Fts-7 fusing agents and by the TsL-21 ele~:trodes are described. .'..ecna,-.ical properties of the 16GNil-type steel arif the cheiii1cal c-ompositlon. of the i~I"69 wire use- as electrode are shown. Twenty seven pictLres (includinL a general view of a hugh cg-lindrical vessel designed to withstand hi-h pressures, p. 80,) and graphs, 11 tables- 4 Russian r..--,ferences, 1948-1QI~3- 1/1 Subject Card 1/2 Authors Title Periodical Abstract AID P - 5202 USSR/Engineering Pub. 107-a - 1/13 Lyubavskiy, K. V., Dr. of Tech. Sci., Prof. and B. I. Lazarev, Kand. of Tech. Sci. : Electrodes for welding EI-257 steel : Svar. proizv., 7, 1-6, Jl 1956 : The authors describe the development of electrodes for welding connections of special pipes made of the El 257 tubing steel up to 30 mm thick, chiefly used at large power plants. The TsT-7 type electrode was found the most satisfactory for the purpose. Six tables, 11 graphs, 2 photos of the micro- and macro-structure of the welded seams; 5 Russian references (1955) and 2 American ref- erences (1955). Svar. proizv., 7, 1-6, Jl 1956 Card 2/2 Pub. 107-a - 1/13 AID P - 5202 Institution : Central Scientific Research Institute of Machine-Building Technology (TsNIITMASh), with which both authors are affiliated. Submitted : No date -FrFl-r- Z li;:~' 17 1. 1, 774 KHIt.,IXEVICH,_F.A.; jAzARxv, B.L.- BAZILEVICH, S.V. Operating blast furnaces with oxygen enriched blast. Metallurg 2 no.6: 3-7 Je '57. (HIBA 10:6) 1. Nizhne-Tagillskiy metallurgichaskiy kombinat. (Blast furnacee) (Oxnen-Industrial applications) FL I D) SUBJECT: USSR/Welding 135-4-2115 AUTHORSs Lazarev B.I._, Candidate of Technical Sciences, and Entin, S.D,, -d-andidate of Technical Sciences. TITLE: Magnetic Method for Determining the Ferrite Phase in Weld Metal, (Opredeleniye ferritnoy phazy v metalle shva magnitnym metodom), PERIODICAL% "Svarochnoye Proizvodetvo", 1957, # 4, Pp 5-8 (USSR) ABSTRACT: Subject laboratory investigation had the purpose of finding an effective method and designing an apparatus for control and quick determination of the quantity of the ferrite phase of weldS in austenitic steel. The electrodes I -C-7" (used for auste- nitic steel '914405" and 191425711) and 'I 4T-15' (used for steel fllXlBH12T" and "lXl8H9T") were investigated~ Their chemical composition is listed in the article. The proposed method of determining the quantity of the ferrite phase contained in heterogeneous alloys is based on the known fact that the ferrite phase is ferromagnetic, whereas austenite and the majority of the composite carbides are paramagnetic. Card 1/2 135-4-2/3 5 TITLE: Magnetic Method for Determining the Ferrite Phase in Weld Metal. (Opredeleniye ferritnoy phazy v metalle shva magnitnym metodom). The method requires the use of very strong electric magnets, When used in combination with a ballistic device, the determina- tion is only possible in a research laboratory or in an indus- trial plant laboratory. For quick testing under conditions of the industrial production, an electromagnetic device has been developed (by TsNIITMASh). (Its circuit diagram isshown in the article), The article contains 3 tables, 4 diagrams, 1 electrical scheme, I sketch, and 2 micro-photographs. ASSOCIATIONt TsNIITMASh PRESENTED BYt SUBMITTED: AVAILABLE: At thh Library of Congress Card 2/2 129-3-4/14 AUTHORS: 'Gellman, A.S., Griboyedova,~T.S., Ye.A. Davidovskaya, Lazarev B.I.,, Lyubavskiy, X.V., Slepak, B.S., Trunin, -1~-T_-and Fedortsov-Lutikov, G.P. TITLE: Investigation of the Steel 1X18H12T as Tube Material for Power-generation Equipment (Issledovaniye stali lKhl8Nl2T v kachestve trubnogo materiala dlya energoustanovok) PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1958, No-3, pp. 16 - 24 (USSR). ABSTRACT: For producing tubes operating at super-critical steam parameters, it is necessary to have available a cheap, strong has a stable structure and stable and ductile material whiag properties at 550 to 650 C7 is not inclined to develop inter- crystallite corrosion and possesses good technological prop- erties. The work carried out in 1952 and 1953 by TsNIITMASh jointly with the imeni Ordzhonikidze Works (Ref-1) proved that it was possible to utilise cheap fteel of the type lX18H9T for operation at high temperatures. ~Later, complex investigations were carried out with this steel as a material for tubes of super-critical parameter power-generation equipment. The steel 1Xl8H9T may contain large quantities of fer*4 -te and, after long-duration annealing at 600 to 700 OCI it embrittles due to Cardl/4 the formation of a a-phase. Increase in the nickel content 129-3-4/14 Investigation of the Steel 1X18H12T as Tube Material for Power- generation Equipment tr 11-13966 brought about an appreciable ifterease in the stability _. the aus'enite without affecting the high strength. This st~.-el, designated as lXl8Hl2T steel, doesonot show any cc- or -phase seBaration during ageing at 700 C for 10 000 hours and at ?50 C for 3 000 hours; only slight quantities of carbides were found to separate out;m2Thereby, the impact strength is maintained at 22-24 kg/ for this steel ' lilst in the case of the steel lXl8H9T, it drops to 9-18 kg/cm . The investigations described in this paper were carried oLt cn ocauercial tubes, rods and also on laboratory produced. steels with compositions as given in Table 1, p.16. The results are entered in tables and plotted in graphs. It is concluded that the steel 1X18H12T, containing 0.08-0.lZlo C, max. ?5016 S!, 1-2% h1n, 17-18.5% Cr, 11-1% Ni, max. 0.2(Ylo S and max. 0.0359/6 P, is suitable for operation at high temperatures; the Ti content of the steel is thereby determined by means of the formula 5(C-0.02). The best combination of mechanicgl properties was obtained after annealing at 1 050 to 1 100 C for 30 min. and cooling in air, and this regime is recommended for tubes as well gs for bends. Weld joints should be annealed at 1 000 to 1 050 C for 1 hour Card2/4 and then cooled in air. The mechanical properties of steels 129-3-4/14 Investigation of the Steel 1X18H12T as Tube Material for Power- generation Equipment heat-treated in accordance with these recommendations are entered in Tg~le 6, p.24, for test temperatures of 20, 600, 650 and 700 C. Practically no embritt;ement takes place for .this steel after ageing at 600 and 750 C for durations of 3 000 to 10 000 hours; no a-phase formation could be detected after such ageing for steel containing 12016 Ni, whilst under similar conditions, a-phase formation can occur in steel con- taining 10 % Ni. Preliminary, non-uniform,viork-hardening influences the ultimate strength of the stleel, but does not influence appreciably the ductility in the case of long- duration loading. In the case of contact-welding of tubes of superheaters, the strength of non-heat-treated weld j8ints is not lower than that of the base metal. Steam at GOO C and long-duration tests for up to 3 000 hours do not aff-.ct appre- ciably the long-duration strength of the steel and of welded joints. The steels lXl8Hl2T and lXl8H9T are less inclined to develop thermal fatigue than the steel lXl4Hl4B2M, and the authors recommend using the steel lXl8H12T for tubes of power- generating equipment, operating with steam of super-critical parameters. There are 5 figures, 6 tables and 8 references, Card3/4 5 of which are Russian, and 3 English. 129-3-4/14. Investigation of the Steel lXl8Hl2T as Tube Material for Power- generation Equipment ASSOCIATION: TsVIITMASh AVAILABLE: Library of Congress Card 4/4