SCIENTIFIC ABSTRACT PULTORAK, J. - PULYARKIN, V. A.

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December 31, 1967
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SCIENTIFIC ABSTRACT
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Aelc7il-1,73tor c)f t.,:e @`ij-droc:;lorir acid roncentxat-4r@r. n. 50. (Cllemicll@y '---unysl. Vol. 7, nc.. 10, "-ct. 19-57, rpha, C-erhrsjcv;--.jeji) 11A r,.Uily In:! e:i c f ---=oue@r, A ccessjcns (EF-l--T) -@ C. 01 - 7, nc . 21 reuruary C' Z " 0 3 L. '13 ",.T A @ __ i A UDC 61 -,.632: 5IL7. 538. 1 LI S I 1-Fn 0'Andrei; '.,VA, jir-ina; ZULTAROVA, InIelena; Department of Uccupational Diseases, Krajslcy Institute of National Health of the Kraj of East Bohemia (Oddeleni Chorob z Povolani, KRRIZ Vychodoce3keho F-Iraje), Hradec Kralove, Head (Vedouci) Docent Dr J. JINDRICHOVA. 'TEffect of Styrene on the Health of IvIorkers Fmployed in the Prod- uction of Laminates." Pra.--,ue, Pracovni Lek,,rs-tvi, Vol 18, No 8, Oct 60', 13p 30-352 Abs tract'F@.uthorsl LriglisIt-, su.-V-ary modified,_7: Ht@ath. of 101 women and 27 men employed in u'Rc! produoti-n. of styrene laminates was in- vestigated. Avora@7e exposare was 1.8 years, w.ita a maximum of 3 years. Styrene c ncentrations up to 700 mg/cubic meter were re- corded; this is 3.5 more than the Czech leCal maximum. Skin dis- ease and neurasthr:nic syndromes were found; no affection of the liver or the 7ail. 1.1adiler was determined. The amount of mandelic a,-id and of creati-@.ne in tlie urine is a good indication of the exposure to sLyreno, vapors. Testing can be made at the end of uh@- working per'_od. 5 Tal-les, 5 Czech, 3 RLssian references. (Manuscript reoe.;@;ed 11--, jul 65). 1/1 POIAIM/Electronics Photocells and lEeiniconductor Devices H-8 Abs Jour : Ref Zhur Fizika, No 5, 1.958, No U171 Author :-Ful Jerz Inst : Hot Given Title :Tiansistor with Ifigh Currant CAin Coefficient Orig Pub :Zesz. nau1c. Politechn. warsz., 1957, Ito 33, 79-104 Abstract :The author excamines the variation of the output characteris- tics and current gain of point-contact transistors with the properties of the materials used for its manufacture and with various factors of constructional character. A point-con- tact transistor with additional emitter is examined from this aspect. The passage of a current of minority carriers through the second emitter of this transistor increases the coefficient (under certain conditions) to approximately 20. The optimi operating conditions, the choice of the material, and the mode of formation of the transistor with additional emitter are analyzed. Curves are given for the dependence of the coef- ficient of the transistor on certain constructional and operating parameters. It is shown that it is possible to Card 1/2 PULTOTM) J.; MODRZEJEI-ISKI, A @ Fast switching AI-Si silicon diode. Archiw elektrotech 11 no. 1:187-190 162. 1. Zaklad Elektroniki., Instytut Podstawowych Problenow Techniki., Polska Akademia Nauk, Warszawa. ::-@7 T r, V31. Uncl. a t: on lec: submi,-,-: F, n:a L 54051-65 EWT(1)/E~T(m)/T/~Wp(t)/EWP(O)/~*A(h)#'Pz~6/Pa~I IJPW @D/Ai'_' 65/0O010O2'bO6916q`-':_ AP5009090 ACCESS30DN MR: AUTHOR: ft1torak. J. -a and 1- 7ITTZ.0 (lermanlym-p hjunctlon d1ofte SOURCE: Przegije@@elektronikj, no 2A 196% 69-75 TOPP; TAGS: junetion.diode, in Ih Junction diede, diode, ipn Junction diode, 34 Junction diode, rectification factor, back current, conduction current, minority carrier, minority carrier frequency, germanium diode ABSTRACT: The p-n and 1-h junction diode.(see Fig. 1 of the Enclosure) having. a minimum saturation current and capableof high-density current conduction. has been designed so that the thickness of the.basels much smaller:than the diffusion! length of the minority carriers, and the 1-h junction, which served as a drain of I--- the base, has the lowest possible recombination frequency of the minority Cal,-Aersdi. types: am I.) sub-,: The advantages of this diode as-,compared with conventional a stantially higher (by approximately one -order of magnitude) maximum conduction 'L:ur_2 rent; 2) low polarizing voltage.corresponding to the maximun=nduction current and.. consequently, low paver losses; 3) the possibility of obtaining a linear charac- 1-tll- teristic of log I f(U) in the conduction direction in the approadmate range of Card LULPGRAK, J.; iioD-I"'sKi, W, The influence of forming upon the Olcutoff frequency of point transisitors. P. 385. ARChrAUM ELECTRUH-CHNIKI. Idaszawa. Vol. 4, no. 2, 1955 Source: Esst European Accessions List,(EEAL), Lc, Vol. 5, No. 3, Farch, 1956 FULTOR-'.K, J. ; RCST--SKI,Ir. Influence of formdnE upon the Olcutoff fre-iuency of point transistors. P. 385. A.-RCHT.,!UN ELEURCf@@CnN11F.I. "-Aszawa. Vol. 4. no. 2, 19r, J.) Source: East European Accessions List, (EEAL), Le. Vol. 5, No. 31, March, 1956 PULTORAK, Jerzy, mgr.,inz. Thyristor, a new semi-conductor device. Przegl elektrotechn 37 no.6: 229-236 61. 1. Zaklad ElektrovAki, Instytut Podstawowych Problemow Techniki Polska Akademia Xauk. P/Oig/62/'011/001/010/010 D265/D302 AUTHO-RS: Fultorak, J., and Modrzejeviski, A. @."TTLE- A @ast switching Al-Si silicon diode P-RTCD'rC,'.L: Archiwtuzi elektrotechniki, v. 11, no. 1, 1962, 187-190 U.;. met-hod of Dre-oarirg the p-n junctfon of a small 7poTer Al- Si d-Lode deve-looed at the Institut elektroniki IPPT-PAN (institute of Electronics of the Polish Academy of Sciences) is described. The neb-ligible solubility of Si in Al allowed control of the depth of lusion and the eutectic bonding method used to produce the Junction resuited i., its regular shape. The process of fusing a thin alumi- num rod (100 0 into a silicon plate of 100 @ thickness soldered to a molybdenum base in an apparatus heated to o500C, iinder N2 was pre- ceeded by careful chemicai etching and cleaning. Slight pressure vias required to initiate the fusion. A small power Al-Si diode has thus been obtained with a switchin- ti-me of about 60 x 10-9 sec. 0 and maximum reverse current of 15 mA when switching from + 15 mA to -30 V. The diode has a small capacitance at zero bias, C 0 1:-,- 3pF and dar d (1 '1 2 P/01 62/011/001/010/010 A fast switching Al-Si silicon diode D265YD302 a hig1'@- coefficient o--F' rectification (forward current a@ + 1 V hi- E,,.'er than 50 mA and reverse current at -30 V less than - 0.1 It can be used at tem-peratures up to + 1400C. There are 4 figures, 2 tables and 3 references; 1 Soviet-bloc and 2 non-Soviet-bloc. The references to fhe 'Em..--lish-language publications read as follows: M1'. J. Calle, C.A.P. Foxell, IEE', Int. Conv. on Transistors and Associa- tion Semiconductor Devices, 21-27 1,1ay 1959; H.E. 3ridr-ers, J.H. C Ld k, 'kaff, J.N. Shive, Transistor technology, v. I, P. 377, 1958. ASS'OCIATION: Zaklad elektroniki (Institute of 71 lectronics) SUM:ITTED: July 12, 1961 Card 2/2 PULT@,!GLK, Jerzy I-- _- Gold-Germanium eutectic contacts. Pt. 1. Przegl elektroniki 3 no-3:135- 139 Mr '62 1. Zaklad Blektroniki, Instytut Podstawowych Problemow Techniki,.Polska Alca-lemia Nauk, Warszawa. AccEssica NR: AA043934 AUT90R.-' PultoMk, J- P/0019/C4/013/002/02P-1/0246 TITIZ: 71je p-a Junction under ainority carrier exclusion and accumulstion con(liti(:ns SWRCE: Archiwum elektrotechniki, Y. 13, no. 2, 1964, 221-246 TOPIC TAGS: semiconductor diode, germanium semiconductor diode,, germanium diode, minority carrier, carrier exclusion, carrier accumulation, p n junction ABSTRACT: This article presents experimental results concerning the effects of exclusion and accumulation in semiconductor germanium diodes. It was found that replacement of a base contact with high recombination velocity by an R-h junction, along vith changes in engineering principles,, leads to a substantial impravement in the current-voltage characteristics of the diodes& Mw (V-n)- (Z-h) diode has a base contact In which the recombination velocity at the cur- rent carrier In described by - a a h U the 41NOW where pp and pt+ express the hole density of the p-ps, junctlam,, Va Ccwd ACCESSICIN 1m: AP4043934 Ch is the electron lifetim in the tron dirfusion constant in the h region, and n h regions The current-voltage characteristic df the diode is described by I M I,(W'U-l) - [((IDnnp)/L,] tgh [(W/Ln)(eDU-1)j, where Is the saturation current, Dn the electron diffusion constant in the n reg on'. the electron density in the p region under thermodynamic equilibrium cOnditi Ln the diffusion length or electron holes, and q/kT (q being the electron charge, k Boltzmann's constant, and T the temperature in deg K). This equation was found valid for the @locking polarization or the diode where leak- age currents as low as 3*10-5A/cm vere obtained. The forward characteristic of the (p-n)-(L-h) diode agrees with th.-*Ls equation only when the bias does not exceed 0-05 V- The (P-nH&@) diode permits the conduction of cmrents vith densities to about 3*10.)A/cn and might have a linear characteristic of log I - i f(U) in a range exceeding 5 current decades of conduction. It is concluded that these results can be obtained only if the recomended changes in the design and technology of the diode am made& Orige art* has: 39 formulas and 23 figareas Card 2/3 Acamim im: Ap4o43934 ASSOCIATIM Zaklad Elektroniki IPPT--PAK (Electronics Factory IPPT--PAN) i SV&%ijTMM 1 20 ,,Tan64 NO REF SOV: 002 ENCL: 00 mm CM3 53 'm 1 020 Card 3/3 FULTORAK, J. Alloyed junction p--n-n+ Germanium diode. Ral Ac Pol tech 10 no.5:L275J-[278] f62. 1. Laboratory of Semiconducting Devices, Department of Electronica., Institute of Fundamental Technical Problems., Polish Academy of Sciences, Warsaw. Presented by J.Groszkowsl@i. 38297 JD P 0153r(62,0001;003 OOLOOJ 1004,1204 AUTHOR. -.11ultorak, Jerzy-- FITI-F. GiAd-gormanium cutectic contacts PERIODICAL liicgl;jd elektroniki, no. 3. 1962, 134 139 l'FXT: Instead ol'directly bonding gold wire to germanium %% hich gives deep and irregularly shaped contacts it is proposed to form first it -cutectic extension-on the %%ire by immersing it into it gold-germarnurneutectic alloy The alloy is contained in it niolybdenum crucible where it is heated to 30U C in an atmosphere ol'drv hydrouen. Eutect ic contack, obtained in this way possess the following features: (a) regular shape. (b) possi- bility of easy control of the penetration depth; (c) may be made at relativelv low temperavue: (d)their mechanical and clectrical properties are no worse than those of contacts obtained directly There are 9 Figures ASSOCIATION Zaklad Elektroniki IPPT PAN (Department of Electronics IPPT PAS) Card 1,11 @ r I!, C;" m - 1. LOBANOV, ".N., '401, " hn. na!l'-; PIETORi'C@, V.F, @'r-@tsent, khmi. tekhn. nauk; D!2BPJl-!VS?,I'!, V.D.. kand, .ekhn. nauk ,rammo,i tea:--Ang, and t@-;,p lise of @eaching m@achi nes in pi- ot og--r--n=,e try. Prog -1 - J-,v, vy:i. iic-h,.!I)- @,,,iv,; geod. I aerof'. no.5s75-82 16"..(KIRA 180) FJLITR, A. [Fulltr, A.] Theory o" the honologies of ritirtlially ardered sets, Soob. AN Gruz. SSR 34 no.1.125-30 Ap'6@ (MIRA 17t7) 1. Karlov universitet, Pragap Chekhoslovaklya. Predstavief-no akademikom G.S. Chogoslivi-Ii. TT 160 no.@@: Ja a 1. Karlov un,,:er3itet, Fraga, Chek-hoslnvatska-v -c@sjalisticheskaya 7es-uniblika. @'-ii, e(; L 32090-66 Ijp(c) ACC NRs A1'60206@4______ -5-OURCE CODE: CZ/()045/65TO()-010-03-Xii-~/619~- AUTHOR: Bukovsky, Lev--Bukovski ' L. (Prague); Hedj!ljn. Zdenek-Gedr3_in' Z. Prague); 'Pult 1!@--Pulttr, A. (Prague) r ORG: Mathematical Institute, CSAV, Prague (Matematicky ustav CSAV); Department of Principles of Mathematics, Mathematics-Physics Faculty, Charles Uninrsity, Ecaga. (Katedra zakladu matematiky Matematickofyzikalni fakulty Karlovy university) /1 '7 (t TIM: TopolwRical representation of eemigroups and small categories SOURCE: Matematicko-fyzikalny casopisy no. 3. 1965, 195-199 TOPIC TAGS: group theory, homomorphism, isomorphism, topology, mathematic space ABSTRACT: J. de Groot proved the following theorem concerning a topological representation of groups: Jet G be an b1tr ;roup. Then there exists a Hausdorff space T such that the group of all tolhomo)morphisms of T (under composition is isomorphic with G. The space T can be chosen to fulfill some other conditions, for example, to be metric or compact. A similar theorem for semigroups and small categories is proved in this article. (Orig. art. in Eng'.] [JPRSI SUB CODE: 12 / SUBM DATE: 05MaY64 / ORIG REF: 001 / OTH REF: OC14 SOV REF: 001 S/032/61/027/004/CO9/026 B11O/B215 AUTHORS: _M, and Pokrovskaya, V. B. TITLEs Colored etching of titanium alloys PERIODICAL2 Zavodskaya laboratoriya, v. 27, no. 4, 1961, 424 TEXTt To examine the structures of titanium alloys types tT-2 (VT-2) and Mfr-2 (IMP-2), the authors applied the methods of oxidizing polished faces at elevated temperature (hot etching), and oxidation in the electrolyte. In hot etching, specimens of HM17-2 (IMP-2) alloy were first polished and then etched with a reagent consisting of one part by weight of hydrofluoric acid, three parts by weight of nitric acid, and six parts by weight of water. After careful washing and drying, the ground faces were put into a.muffle furnace, heated for three minutes to 6000C, and then air-cooled. After each treatment, the grains of the a-phase turned blue or bluish-violet depending on their color orientation, whereas those of the P-phase turned yellowish-brown. The larger number of in- clusions in the a-phase in microphotographs is explained by the saturation of the ground face with oxygen and nitrogen (which are stabilizers of the .2@1__'@@ Card 1/3 S/032/61/027/004/009/028 Colored etching of..-. B11O/B215 a-phase) during heating to 6000C. Structural changes of the alloys may occur in hot etching. Prolonged and frequent heating to higher tempera- tures is therefore not suited for colored etching. Colored electro- chemical etching may not cause any structural changes in the alloys, Besides, a better colored pattern of the examined structure is obtained by this method of etching. Electrochemical etching 2was conducted by the authors at 120 v and a current density of 0.05 a/cm in the electrolyte containing 5 9 of citric acid, 5 g of oxalic acid, 5 ml of orthophosphoric acid, 10 ml of lactic acidg 35 ml of water, and 60 ml of ethyl alcohol. Current was supplied in pulses of approximately 0-5 see. The clearest pattern was obtained with Allff-2 (IMP-2) alloy after five pulses, and with ST-2 (VT-2) alloy after two pulses. The color of the individual structur- al components in colored electrochemical etching also depends on its duration. The ground faces of the alloys types RHIT-2 (IMP-2) and:DT-2 (VT-2) turned yellow even after a short time of etching, and then successively brown, violet, and blue due to longer etching. This sequence repeated when the process of etching was continued. In hot and electrochemical etching, the surface is recommended to be well polished, washed, and degreased. For laying the structure open, it should also be Card 2/3 5/032/61/027/004/009/028 Colored etching of... B110/B215 etched by standard reageats. [Abstracter's note: Complete translation. Two colored figures cannot be reproduced]. There are 2 figures. Card 3/3 PHASE I BOOK EXPLODITATION SOV/6005 Pulltsin, Nikolay Mikhaylovich Titanovyye aplavy i ikh primeneniye v mashinostroyenii (Titanium Alloys and Their Application in Machine Building) Moscow, Mashgiz, 1962. 166 P. 7000 copies printed. Reviewer: Ya. N. Dityatkovskiy, Engineer; Ed. of Publishing House: A. I. Varkovetskaya; Tech. Ed.: L. V. Shchetlnin&$managing Ed. for Literature on Machine-Building Technology (Leningrad Department, Mashgiz): Ye. P. Naumov, Engineer. PURPOSE: This book is intended for designers, process engineers, and specialists In metal science. It may also be useful to students at schools of higher technical education. COVERAGE: The book deals with problems of the physical metallurgy of titanium alloys. Basic phase diagrams, structures, and com- positions of Soviet and non-Soviet titanium alloys are presented. Attention is given to the following: the effect of various Im- Card 1/5 Titanium Alloys and (Cont.) SOV/6005 puriti6s and alloying elements on titanium; problems con- nected with'the heat treatment of titanium alloys; mechanical and physical properties of titanium alloys at room and elevated temperatures and the effect of various factors on these properties; problems of the corrosion resistance of titanium and its alloys; the advantages of titanium alloys over other materials; the application of titanium alloys in the machine building industry; and characteristics of basic methods of processing titanium alloys in machine-building. No personalities are mentioned. There are 109 references, mostly Soviet. T=OF CONTENTS: Introduc on Ch. I. Produ ion 1. Met all@@ .2. Properti@;Nbiuti@anium 3. Effect of im of titanium Card 2/5 and Properties of titanium rities on the of Titanium structure and properties 3 7 7 12 15 :3/14q/62/oor,/oo5/r,o7/Oo8 A0061AI01 Pul'tsin, 11. TITLE,: on zone ,;tructural and concentrational peculiarities of a modified layer in titanium alloys lzve3tiya vysshikh uchebnykh zavedeniy, tsvetnaya metallurgiya, r1o. 5, 1962, 137 - i4o -'T: rffhe authors studied the structure, hardness and chemical composi- tion of the surface layer of some titanium alloys. The structure of this layer was modified by holding the titanium alloys in air-atmosphere at high tempera- tures, so that their surface layer was saturated with oxygen and nitrogen. It was found that this layer was characterized not only by greater hardness and the presence of an alpha-affected zone but also by a content of alloying elemenis different from the core, Experiments made with a titanium alloy containing 4% Cr proved this concept to be correct. Micro-spectral analyses show that the Cr content increased from 2.110 in a depth of 0.075 mm to 4.32% at 0.825 mm distance from the edge. The presence of a contrasting alpha-affected zone in the modi- Card 112 V1119A )2/00Q/005/GO7/G08 On :-,ome struc '@U_-n I P. rid, concen "I rati-orn I... AOOOS1AIOI :in@i depends on the structure of the alloy. ThIss (iist:@nct-,ly in ;@n iLioy @-.ith an .+ strurture, while in an alloy stnic'ure o@' oure solution it is insignificant. Tn alloys with a a stncture oi' pure -s,)l'd solution the modified layer and the core are not c I r e n t a- t a 11 .Saturation ot' the surface layer with t-stabilizers (air oxy- gen and n-I _,en) causes the reclisturibution of alloying components as a result 'tro, of the eXpulsion of --stabilizers into deeper layers of the metal. Due to this redistribution the sti-acture of surface and sub-surface layers is modified, en- taillnj@ changes in the propertips of these layers and in the part itself. Until t:ir@ 3rp5ont, ti-.e modified layer ,..,as considered to be a negative factor. Con- @rarv -o this on'nion 'he autt--or believes that a surface layer with a modified L - - 1. comp osition of the basic alloving components may show a better quality thar the DaSt, metal, espec@ally in respect to corrosion. There are 3 figures. Acc7OCIAT7()j:: Voyerurio-vozdushnaya inzhenernaya akademiya (Military -Aviation En- gineering Academy) Card ".12 PULITSIN, N.M..;--POKROVSKAYAP V.B. Effect of heat treatment titanium alloy with 4 1/0 no.6:843-847 D 162. on the structure and hardness of a chromium. Fiz.met.i metalloved. 14 (MMA 16:2) (Titanium alloys-Heat treatment) EWP(q)/EWT(m)/IEM AFFTC/ASD L 15579-63 iACCESSION NRs AP3000984,, @S/010/63/000/002j&@4/0161 AUTHORS: Pulitsin, N.,M.; Fokrovs!sa@yav@.- TITLE- Surface layer' on vacuuim-annealed titaniumi alloys -157 ;SOURCEt IVUZ. Tsvetnaya. metallurJa, no.:'2, 1963, -163. 1TOPEU TAGSi titanium alloy vacuum annealingp'.surficelayer, microstruature,, vaporization :ABSTRACT: Two types of titanium alloys.were.subjected to annealingin evacuated loquartz ampules at various temperaturX d for me periods. One alloy sana various ti :contained from 5 to 20% of chromium 1) nd ;oas heated at,.1100,.800,.and 600C for -------Iy The second alloy.contained 0.5%,chromium, :16, 200, and/?00 hours respective 6% aluminumtVbLnd 5% of either irgreA s4LcogA It, was subjected to temperatures of 1 700, and 500C fo-r-@-, 200, 300, and. 500 hours. . After cooling to room temperature, the samples were studied with a metallographic microscope. Their hardness was determined by Vickers I instrument, T e chemical composition of 1 h the surface layer and core were analyzed by Korolev's local microspectral, technique; with Korolev himself performing the tests. It was found that annealing caused the i surface of the alloys to assume a corroded aspect, revealing a scattered micr F- 0- i Card 1/2 lu 15579-63 ACCESSION NR: jerystalline structure. The hardness of the.surface layer-was higher than that of-- 'the core, and its chemical composition showed an enrkchment in the alloying metals'. ,,This was due to volatilization of titanium, which was deposited on the inside sur Jace of the ampule. Thus, the care of a 5% chromium alloy contained.(after anneal- :ing) 8,1 of this metal, the composition of the core remaining unchanged. In an ;alloy containing 6% Al) 0.5% Gr and 5% Si annealing produced no significant changes in the Al and Si content of the surface layer'while causing the impurities (Fe and. Mo) to increase 40 and 100 times, respectively, The samples of alloys were @supplied by I. I. Kornilov. The vacuum annealing of-the samples was conducted with the assistance or S. ikheyeva and T. S. Chernova. Orig. art. hast 4 figures... ;ASSOCIATION: Voyenno-vozdushnaya inzhenernaya. akademiya (Military kir,Enginee'ring Academy) SUMITTED3 O8Dec62 DATE AM 2lJun63 EXL: 00 !SUB CODE: ML NO REF SM 004 OTMt 000 212_ -Card 77 PULITSIN, N,M., kand.takhn.nauk Incro3naing the resigtance to corrosion of tit4nillm allOYO, Kbim.maDhin0atr.. no.6t26-27 N-D 163. (MIRA l7t2) ACCESSION NIR: 'AT4007028. S/2598/63/000/010/0063/0070 AUTHOR: FU'tsin, N. M.; Pokrovskaya, V. D. TITLE: Results of metallographic and x-ray diffraction examination of AT-type titanium alloys SOURCE: AN SSSR. Tristitut metallurgli. Titan I yego splavy*, no. 10, 1063. Issledovaniya titanovy*kh splavov, 63-70 TOPIC TAGS: titanium alloy, AT titanium alloy, AT titanium alloy structure, AT titanium alloy hardness, AT-3 titanium alloy, AT-4 titanium alloy, AT-G titanium alloy, AT-8 titanium alloy, AT-9 titanium alloy, AT-10 titanium alloy, complex titanium alloy, titanium aluminum chromium alloy, iron containing alloy, silicon containing alloy, boron containing alloy ABSTRACT: In continuation of earlier work by 1'. 1. Kornilov and others, the authors in- vestigatod the microstructure, hardness and X-ray diffraction patterns of titanium all'oys AT-3, AT-4, AT-6, AT-8, AT-9 and AT-10 having various phase compositions. Forged Card 1/4 ACCESSION NR: AT4007028 cylindrical specimens were first subjected to thermal treatment under conditions selected on the basis of the phase diagram sliown in Fig. I of the Enclosure. McLallographic examina- tions of these specimens by either the black-and-white method (etching with 11F + IIN03 or with 112SO4) or the color method described previously (Zav. lab., 1961, No. 4, p. 424) showed anc.4,-solid solution of the interwoven or neccUc type in all cases. The precise type of structure was found to depend on alloy content (Al, Cr, Fc, Si, B), ann"ing tempera- ture and rate of cooling during quenching. Normal X-ray anglysis on the URS-70 machine confirmed that the alloys consisted mostly of the---