SCIENTIFIC ABSTRACT SHABALINA, O.K. - SHABALINA, Z.S.

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SCIENTIFIC ABSTRACT
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The Effect of Boeirilte and Maspore Addition on 77626 the Rate of Decomposition of Aluminate Solutions SOV/80-.33-2-1/52 A a) so 40 jo I 20- z f0 - 0 __O B 20 Q so go 4 b) JO zo - 10- 0 0 -fo zo ~0- 80 m Card 6/ 9 See Card 7/9 for caption The Effect of Boemite and Diaspore AdditLon on 77626 the Rate of D4--composition of Alwninate Solutions SOV/80-33-2-1/52 Card 7/9 Fig. 3. Decomposition kineticsof aluminate solution with different amounts of seed crystals from incomplete recrystallization.product of boemite into diaspore: a -without organic admixtures; b - with organic admixtures, 1% based on Na 20gen; A -degree of the solution decomposition (in %); B - duration of the decomposition (hours). The seeding ratiot 1 - 0.05; 2 - 0.1; 3 - 0.2; It - 0.5. The seeding ratio In Fig. 3b Is in the range 0.05-0-5. Decomposition of the aluminate solutions containing seed crystals of thermal boemite results in precipitation of the comparatively large hydroxide crystals, most of which are +50-100 A very fine precipitate of the hydroxide crystaUL--4qL up to The Effect of Boemite and Diaspore Addition on 77626 the Rate of Decomposition of Aluminate Solutions SOV/80-33-2-1/52 46-55% was observed when seed crystals of the hydrothermal beomite were used. The solution in thIs case did not contained any organic.admixtures. The small amount of seed crystals (the seeding ratio 0.05 -0.1) facilitates the precipitation of fine crystals. Analysis of the hydroxide crystals indicated that %they are composed-of hydrargillite and seed crystals and the precent of the hydrargillite is higher than could be expected from decomposition of the solution.. It means that part of the seed crystals undergo transformation into hydrargillite. X-ray phase analy- sis of the precipitates obtained during the decomposition of aluminate solution containing seed crystals of hydrothermal boemite showed that they also contain bayerite, I. e., that hydrothermal boemite on mixing with aluminate solutuion Is transformed first into - bayerite and then into hydrargillite. The high seeding activity of the product of Incomplete recrystalliza- Card 8/9 The Effect of Boemite and Diaopore Addition on 77626 the Rate of' DecompOs1tion of Aluitililate Solutions SOV/80-33-2-1/52 ASSOCIATIONt tion of boemite into diaspore, compared to hydro- thermal boomite, ILi due to the partially distorted crystalline lattice of unrecrystallized boemite, the outer layer of which is transformed at first into . , bayerite and then into hydrargillite. Tne induction periods (as it is shown on the decomposition kinetics curves) is due to the recrystallization of the outer layer of boemite into hydrargillite. Microphotographs of the formed crystals taken with an electron microscope are given. It was concluded that diaspore is inactive as a seeding agent for the decomposition of the aluminate solutuions. Ther,-~ are 9 figures; and 6 references, 2 Soviet, 3 German, and 1 U.S. The U.S. reference ist Iaubengayer, A., Weisz, R., J. Am. Chem. soc., 65, 247 (1943). Ural Polytechnic Inst-Itute, Sverdlovsk (Urallskiy politekhnicheskiy institut, Sverdlovsk) SUBMITTED: April 11, 1959 Card 9/9 5.4220 782o6 SOV/80-33-3-7/47 AUTHORS; Kuznetsov, S. I., Derevyankln, V. A., ShabalIna, 0. K. TITLE: The Effect of Added -Alumina and Corundum on the Rate of Decomposition of Aluminate Solutions PERIODICAL: ZhUrnal prikladnoy khimli, 1960, Vol 33, Nr 3, PP 547-552 (USSR) ABSTRACT: This is a contihuation of studies (Abstract 77626) on the rate of decomposition of aluminate solutions under the influence of added aluminum-oxide grains. This time, the authors used ' -alumina and corundum seedsand the transitional products between the two, to accelerate aluminate decomposition by growing crystals. The three types of seeds were produced on annealing hydrargillite at 8ooo C for 4 hr, diaspore at 1,2000 C for 5 hr, and hydrargillite at 1,1000 C for 12 hr, respectively. Figures 1 and 2 illustrate the seeds of Card 1/6 alumina and its transitional products to corundum The Effect of Added - -Alumina and 782o6 Corundum on the Rate of Decomposition SOV/80-33-3-7/47 of Aluminate Solutions effectively accelerate the decomposition of dis- solved sodium aluminate after a certain period of induction, while corundum does not affect the aluminate decomposition during any duration. The induction period decreases with the increasing quantity of the seeds relative to that of the alu- minate solution, i.e., with the seeding ratio. Organic impurities first reduce the decomposing power of ..'-alumina, but later increase it considerably. The decomposition of' aluminates by -alumina gives rise to the precipitation of extremely fine aluminum hyd'roxide. UP to 30% of the grains remain smaller than 40 - .' Small amounts of organic impurities increase this fraction up to even 70%. However, the higher contents of organic substances make the hydroxide slightly coarser. Larger quantities of seeds (seeding ratios 0.2-0-5) also reduce the grain size of the hydroxide. The precipitate, generated by the transitional products from --alumina to corundum, Card 2/6 consists of up to 25% of the fraction under 40 -- , The Effect of Added '-Alumina and '(8206 Corundum on the Rate of Decomposition SOV//-30-33-3-7/47 of Aluminate Solutions Card _3/6 in which the majority of grains vary from across. X-ray diffraction data proved that all the precipitates consist of hydrargillite and the surface layers of the seeds themselves also turn into hydrar- gillite during the initial period of induction. Perhaps -alumina first turns into boel-nnite, then into bayerite found in the X-ray diffraction photographs, then into hydrargillite. Electron microscopic data disclosed the composition of '7"-alumina of amorphous minute particles, whose porous aggregates have large surfaces per minute volume. During the induction period they become covered with dendritic crystals of boehmite and hydrargillite, 0.1-0.5 ' long and 0.11 across, whose crushing off at stirring of the solution produces numerous new crystallization centers. Some of the fine grains of . -alumina recrystallize into hydrargillite completely and form pseudohexagonal Dlatelets. In conclusion, the authors state that the seeding capa- city of boehmite and ".,*-alumina is related to their instability in the presence of hydrargillite. The Effect of Added '"'t,-Alumina and 782o6 Corundum on the Rate of Decomposition SOV/80-7113-3-7/-417 of Aluminate Solutions ASSOCIATION: SUBMITTED: During the Induction i-n.t.o hy-drargillite. because of the Very into hydrargillite, aluminate solutions. true for corundum. 1 Soviet reference. period, theiv surface layers turn Diaspore ts zlw unstable but low rate of Its recrystallization does not cause decomposition of The same reason is likely to be There are 8 figures; 1 table; and Ural Polytechnic Institute, Sverdlovsk (Urallskiy politekhnicheskiy institut. Sverdlovsk) April 11, 1959 Card 4/6 30 fill 40 2 .10 jo 10 fo 2 a -10 -2,9 ~O so 2d ;0 450 10 40 Fli-:. 1 Doe:oinposlt ion b.-Ineties of' aluminate solutions contalnini~- Jillf'erent (luantities of '/-alumina seeds. 0 (a) Without rganic impur i ties; (b) with 1% 0,) of impur,ities (,-on.;idering* total Na2O 100%; (c) with _~% 0,,-) ol' organic impurities; (A) degree of solu- tLon decomposition (%); (B) duration of the decomposi- tion (1ir). Seeding ratio: 1-0.01; 2-0-05; 3-0-07; 11-0.1; 5-0.2; 6-o.L7. Card 5,16 7822o6 sov/80-33-3-7/47 Fig. 2. Decomposition kinetics of aluminate solutions containing different quantities of the seeds produced by an incomplete recrystallization of '/-alumina into corundu-n. (a) Without organic impurities; (b) 1% 0, of organic impurities considering total Na20 100,0v'; (A) degree of the solution decomposition (%); (B) duration of the decomposition (hr). Seeding ratio: 1-0-05; 2-0.1; 3-0.2; 4-o-5. Card 6/6 BOGOSLOVSKIY, V.N., SHABALINA, O.K. Alectron microfractography of ferrates. Fiz.met.i metalloved. 10 no.1:153-156 J1 160. (KM 13:8) 1. Institut metallurgii Ura"skogo filiala AN SSSR i Urallskiy politekhnicheakiy institut im. S.M.-Kirova. (Ferrates) (BlectroNn microscopy) LEREVMIKHlt V.A.; KUZUETSOV9 S.I.;- SRABALINA2 O.K. Investigating the processes of dissolving and crystal growth of aluminim hydroxide in alk-aline aluminate solutions. Trydy Ural.politekh. inst. no. 98:10&-U5 160. (MIRA 14:3) (ALluminum crystals- Growth) (Electron iieroscopy) S/126/61/012/005/010/028 E111/E435 AUTHORS,* Shabalinal. O.K., Chufarov, G.I. TITLE. Mechanism and kinetics of the decomposition of wustite, I PERIODICAL: Fizika metallov 1 metallovedenlye, v.12, no.5, 1961, 697-702 TEXT.~, WiUstite decomposition below 570"C is important in both scaling and iron-oxide reduction. The authors have therefore carried out an investigation in which special attention was paid to changes in the microstructure of the free W"Ustite surface during deco.;rnsition and to the kinetics of the process as a whole. The process taKes place in two stages: (l - 4y)Fe 1-X 0-:0 (l - 4x)Fe 1-Y 0 + (x- y)Fe 301 ; x > y .... (1) 4Fe 1-Y 0--)#Fe3 04+ (I - 4y)Fe a .... '(2) Wustite was prepared by oxidation of armco iron with a CO-CO2 atmosphere (2..'3) at 10400C cooling to 8000C and quenching. The Card 1/4 Mechanism and kinetics of S/126/61/012/005/010/028 EIII/E435 1. wustite scale was chipped off to give 4 x 10 x 0.3 mm coarsely crystalline plate specimens. These plates were -vacuum annealed at 350'C for -rarious periods., Decomposition was studied by qualitative X-ray structural phase analysis on the powdered scales in a high-.resolution camera. The lattice parameter of Vomstite and its decomposition products were determined, Magnetic analysis (Ref.10.~ Kifer, I.I. and Pantyushin, V.S., Testing of Ferromagnetic Materials,Gosenergoizdat, M~-L., 1955) was used for following the process quantitatively, the specific magnetization being determined with the &id of a standard nickel specimen, An electron microscope with a resolution of 100 A was used to study decomposition on the free surface, The inner and outer faces of the scale were studied by X-ray structural analysis; rapid photography with focusing on the strongest structural lines of the phases was used for phase analysis-, the parameter was determined by back reflection. KaCo radiation was used in all the X-ray work. Powder X ray patterns showed the initial specimens to be FeO.9250 but there were signs of the start of decomposition on the outer side of the scale, The lattice parameter there was 4.299 that on the inside having the average value of 4,302 Xo A multi- Card 2/4 s/i26/61/012/005/010/028 Nechanism and kinetics of ... Elll/E435 step relief was found electron microscopically on the outer sitrface, that on the inside being typical of crystal cleavage. Observations oil the decomposition at 3500C shoured that within 15 111inutes the procelss bad spread to the inner face. At the outer face there was more metastable than original Iw'ustite. Vi th ftirther decomposition, llv'ustite disappeared first from the outer and then the inner face; the hypoeutectoidal formation of magnet-ite was accompanied by the appearance of fairly dense formations at both the inner and outer faces. The course of the process is shoim by Fig.11 (specific saturation magnetization as as function of' time (lop, scale) in hours): in about I to 1.5 hours the first-stage reaction M.is completed. This enables a. to be checked by calculation, values of x and y being obtained f.ror- varainetevs of. the original and metastable i'lustite (Ref -3:. k;arion M.P. Doc. metallurg., no.24, 1955, 87) and using the tabulated as value for magnetite. Satisfactory agreement was obtained. After 2 hours holding at 3500C, the second eutectoidal-decotaposition stage of the process begins, iron being detected on the outer side of the scale and, after 5 hours, on the Card 3/ 11 Mechanism and kinetics ok oe. Institut metallurgii UFAN (Institute of Metallurgy UFAN) inner side. On both sides, numerous pores about 0.1 micron in size appeared. This porosity is more pronounced ttian that in the first stage. Pore formation is due to coagulation of vacancies caused by diffusion of iron ions, which in the U'rustite lattice occurs more rapidly than tdiffusion of oxygen ions. There are 7 figures and 13 references: 7 Soviet-bloc and 6 non-Soviet-bloc. ASSOCIATION: SUBMITTED: Card 4/4 March 6, 1961 B'10 S/126/6i/012/Orj5/010/028 Elli/E435 'V0 Fig.4. 20 01~ 0,25 0,S I 1,S2 3 4,,~ 147 IJ 20 90 8pemp, Yacw t'.w01C-r S/08 60/033/'012/'048/024 D209%30'5 AUTHORS: Sh.abalinai M., Derevyankin, V-* and Kuzneteov, S.I. TITLE: Experimental investigation of aluminum -tnd hydroxides and oxides by means of the electron mio-roscope PERIODICAL: Zhi4rnal prikladnoy khimii, v. 33, no. 12, 1960, 2774 -- 2777 TEXT: The elec-'ron microscope is being increasingly used as a means of assessing the properties of aluminum hydroxide& and oxi 4 des, so the authors studied var ous aspects of the preparation of samples for this purpose. SomewhaT modified versions of the stan--- dard procedure were tested to try and surmount certain difficul- Tiesg The Dresence of soluble alkali impurities; the existence of readily-hyarolyzable subsTanceRs, such as the titanium compounds noted by M.V. P.1ironov et al (Ref. 2: Izv. Vuzov, Tsvet. met, 1, 83, 1959); and the occurrence of large crystals with dimensions of 101i and more. Benzene appears io be the best liquid for preparing sus- Card 1/4 S/080/60,/033/'012/018/024 Experimental investigation of ... D209/D305 pens"Lons.,, Pthyl alcohol is unsuitable in view of the damage incur- red by the collodion backing on desiccationo Carbon can also be employed as a film-backing in addition%~o collodion. It is made by evaporating a polystyrene - benzene solution on glass, after which the residue is dusted with carbon. The softened polystyrene is then dissolved in ethyl bromide, and the residual carbon-film is again washed in benzene and dried on the carrier-g4pting. Collodion and carbon fillm-backings react different-ly to concentra-Ued NaOH and aluminate solutions: with NaOH the former ma-,erial is loosened and fractured and evaporation of the solution, whereas the carbon backing is not affected in this way. A dense, raggedi coagulated layer obscuring all details is also formed when an aluminate solu- tion is evaporated on the collodion film-ba'eking. Investigation of crystals contaminated by alkali- discloses the presence of halos or branching folds of alkaline film around them wLch distorts the true surface picture and gives rise to the illusion of numerous offshoots near diaspore crystals. But previous work by S.I. Kuznet- sov et al (Ref. 4: Yietallurglya NDVSh, 4, 87, 1958; Kohaszati La- Card 2/4 S,,,`080;'60 /'033 '012/01-3/024 Experimentai. inves-Lligation of ... D209/D3Y5) ' pok, 14, 79 29, 1959) and V.A. Derevyankin et al (Ref. 5: ITDVSh, Eetallurg4ya, 42, 19~;q; Tr~ Ural'skogo politekh. inst. im. S.M. K-1rova, 98, 106, 1960) has sho,.-in that diaspore, unlike bemite and gibbsite, does not form dendrites. If these alkali-clntaining cry- stals are applied to carbon film-backing, however, they preserve their clear outlines since alkali will not deliouesce on it. As re- gards the questiorl of large crystalst the very rigidity of the car- 'I'm 4 bon L.L~ Impedes the application of the technique used by the au- thcrs for turning crystals in order to appraise their three-dimen- slorial form,, the film fractures and turns with -the crystals. This does not happen with collodion backings. and the authors have been able to employ such a method in much of their research. In view of this fact, and taking -into account the need for rapidity and sim- plicity when preparing large numbers of samples for electron-mi- croscope analys-4sj the standard procedure involving the use of col- lodion film_baoking 3.s recommended-. although the expediency of ui'Llizing the other mod'Lfi~:at'ions is also noted by the authors. There _s -re 3 figures arim 5 references: 4 Soviet.-blo.- and 1 non- Soviie-t-bloc, The reference to the Engli-sh.-language publication Card 5/4 S/'080/60/033/012/018/1024 ExperInuental invest.1'.gation of ... D209/D305 reads as follovis.- D.E, Bradle Appl~ Phys.. 27, 12~ 1399, 195 Y, 6./ ASSOCIATION: Ural"skiy pol-l-tekhnicheskiy institut im. S.M. Kirova (Ura7 Polytechnic- Institu-te im. S.M. Kirov) SUBMITTED: Dlarsh 9, 1-960 Card 4/4 SHABALINA, O.K.; CHUFAROV., G.,L, M 1 ,3,.,hanJ.,.jL, and kinet-Ics of' the decomposition of wustite. Fiz. niet. i irietallcwed. 12 nr,.5.,677-702 N 161, (141RA 14: 12)) 1. Insbitut metallurgiJ. Urallskogo filiala AN SSSR. Nustite) 2432 1) 0 D S7 S/080/61 034/007/006/016 D223/D305 AUTHORS: Derevyankinp V.A., Kuznetsov, S.I., and Shabalina, O.K. TITLE: Effect of additiens of titaniUm oxide and silica on the leaching rate of aluminum hydr~qkide PERIODICAL3 Zhurnal prikladnoy khimiiq v. 34, no. 7, 1961t 1456 - 1461 TEXT: The main part of this article deals with tl* study of kine- tics and the nature of dissolving pure aluminum hydroxide in the presence of titanium and silicon oxides. To establish the nature of dissolving thearystals of hydroxide use was made of electron microscopy, by which means data was obtained on the formation of protective surface films on hydroxide crystals and also on the -C. .Lorm of traces of chemical compounda, developed by the reaction of Ti and Si oxide with an alkaline solution of aluminum during leach- ing. The composition of these compounds were not studied. For leaching experiments following aluminum hydroxides were used: 1) Card 1/4 22432 016 S/080/61/034/007/006/ Effect of additions of ... D22VD305 Hydrargilite, obtained under control conditions; 2) Bemite, prepa- red by the reorystallization hydroargilite under hydro-thermal conditions at 3000C and for 8 hours; 3) Diaspor, prepared by the method of A.VV Laubengayer and R.S. Weisz (Ref. 6: J. Am. Chem. Soc. 6q, 247, W _943)q i6e. by heating bemite in presence of water at temperature 350-375 C with 2 % of diaspor seed. The results of the experiments confirmed that titanium oxide appreciably lowers the leaching rate of diaspor and bemite, but has no effect on the dissolving rate of hydroargalate. It was also confirmed that tita- nium oxide inhibition at a temperature of 150'C and higher pre- vents the leaching of bemite and diaspor"but on reaching 230" it no longer prevents the leaching rate of bemite while the solution of diaspor is still inhibited. In this respect, Ti02 gel and ru- thile differ, the latter being less active. In the presence of waste (3-4 % of the initial weight of solid phase), the inhibiting action of titanium oxide is much smaller and at temperatures above 1750 becomes practically zero. The oxides of silicon also deter the leaching of aluminum hydroxide, but to a lesser extent than ti- Card 2/4 22432 S/080/61/034/007/006/016 Effect'. of additions of D223/D305 tanium oxide. The bes-c Inhibitors are silica gel and opal. Elec- tron microscopy has confirmed N.K. Druzhinina's suggestion on the mechanism of the inhibitive action of titanium oxides, I.e. the formation of protective films on aluminum hydroxide. The thinness of film is appreciably less than 100 X and on the addition of waste films were not formed. With an increase in leaching timet the protective films crystallize into needle-shaped crystals which still form protective layersp but now these are porous and alka- lies diffuse to aluminum hydroxide and the dissolving rate is high- er. Additions of silicon oxides form crystalline protecting films of zodium aluminum silicates on aluminum hydroxide insulating it from alkaline attack. The formation of aluminum silicates on the surface of aluminum hydroxide crystals can be explained in the following mariner: Silicon compounds contained in bauxite react with alkaline aluminum solution to form sodium silicate which. in turn, reacts with sodium aluminate to form a complex compound qa20- A120~-2SiO2.2H20. The form of reaction, state the authors, is pro- babl Card 5/ 4 S/020/61/140/006/029/030 B10-'/BlOl AUTHORS: Chufarov, G. I., Corresponding Member AS USSR, and Shabalina, 0. K. TITLE, Mechanism and kinetics of wustite decomposition PERIODICAL: Akademiya nauk SSSR. Doklady, v. 140, no. 6,1961, 1392-1393 TEXT: The decomposition of vustite on its free surface and the quantitative characteristics of the decomposition kinetics were studied. Wustite produced by oxidation of Armoo iron in CO-CO 2 atmosphere was chipped off and temDered in vacuo at 3500C. Phase composition and parameter were determined by x-ray structural analysis. Polystyrene carbon replicas of the free surface of the specimens were examined electron microscopically. The magnetic saturation moment was measured by means of magnetic analysis in a ballistic apparatus. Wustite had a parameter of 4.295 1 in its original state. This corresponds to the formula Fe 0.907 0. It bas been found that decomposition begins an the outer surface of the scale and is here more intensive, since this surface is richer in 0 2* Primar~, magnetit6 Card 1/4 S*102q/61/140/006/029/0~-O Meohanism and kinetics of.. B103/B101 forms on both surfaces ae hin and flat formations according t~. the reaction: (1 -4Y)Fe 1-x 0 --* (1 - 4X)Fe 1-Y 0 + (x - Y)Fe3 04; x> y (!). 'he resulting metastable wustite contains much less oxygen in the surfar,~ layers (Fe 0.9840 ) -than in the center (Fe 0.9630 ). This is indicative of strong decomposition on thu free surface, where crystallochemical oonversion is much easier. Eutectoid decomposition is determined based on the occurrence of --','ron and the constancy of the parameter of metastable wuaiite,, It proceeds according to the reaction: 4Fe 1-Y 0 ----PFe304 + (1-4Y)Fea (2), This decomposition is accompanied by a chRracteristic change of the surface microstructure. Numerous fine pores (of about 0.1 ~L) are formed. The mechanism of this process is: On leaving the wustite lattice iron ions leave vacanciez. coagLlate to micropores which are not overgrown by the magnetitr - ivnating from vustite. Additional annealing of the specimens (at )UOOC) nf;er decomposition reduced the porosity and revealed clearly the microstructure. Both the large primary magnetite c_rystals and the eutectoid could be easily distinguished. Microcrystals (of about 0.5 g) of the secondary magnetite became visible Card 2/4 Mechanism and kineticF. of... 8/020/61/140/ 006/029/030 B103/B101 in the eutectoid. Presumabl,,f the iron content of the eutectoid is insignificant (about 13 ~5 by volume). Probably, Fe forms intermediate layers between the magnetite microcrystals. The curve as(t) wag plotted (Fig. 4) as a result of magnetic analysis and shows that the specific intensity of saturation magnetization of wustite specimens is a func':ion of the annealing time at 3500C. The experimental values of as could be' used to determine the decomposition degree in any intermediate stage and to estimate the decomposition rate in different periods. This became possible owing to the constancy of the quantitative interrelations b,etween the phases formed. The rate during the first period (pre-eutectold separation of magnetite) exceeds that of the second period (eutectoid de^~omposition) by a factor of about seven. There are 4 figures and 6 references: 3 Soviet and 3 non-Soviet. ASSOCIATION: Institut metallurgii Urallskogo filiala Akademii nauk SSSR (rnstitute of Metallurgy of the Ural Branch of the Academy of Sciences USSR),' Urallskiy politekhnicheskiy institut im. S. M. Kirova (Ural Polytechnic Institute imeni S. M. Kiro-v) DEREVYANKIN, V.A., kand. tel-Jri. nauk; KUZNETSOV, S.I., prof., etoktor tekhn. nauk-; SHABALIN'.. 0.K., inzh. i Nk Effect of titanium and sil~-.-on oxide admJ~ t~Tes on the leaching rate of aluminum hydroxides. Sbor. nauch.,,trud. Ural. politekh. Inst. no.122:102-110 161. (MIRA 17:12) S/126/62/013/005/020/031 Elll/E435 AUTHORS: -Shabalina, O.K., Chufarov, G.I. TITLE: Mechanism and kine:ics of the decomposition of wustite. II PERIODICAL: Fizika metallov i metallovedeniye, 7.13, no-5, 1962, 766-768 TEXT: In an earlier paper (MM, v.12, no.5, 1961, 697) work on wustite decomposition at 350% was reported. In this paper wustite decomposition at 400 and 500*C was studied. In the present work the same batch of wustite was used in the form of platc!3 _T scale 0.3 mm thick with a.lattice parameter of ~--302 to Fe3.9250- AnTiealing was carried out in vacuo (10-4 mm Hg). The saturation magnetization was determined an a function of annealing time, the same specimen being used for constructing a complete curve. X-ray patterns were taken from the same specimen to obtain the phase analysis of the inside and outside of the scale. A separate specimen, which had undergone the same treatment as the other specimen, was used for the X-ray Card 1/2 s/126/62/013/005/020/031 Mechanism and ki~!etics Elll/E435 powder method deterwir)ation of lattice parameter. Changes in the surface'microstructure during decomposition weize followed with the aid of an electron microscope (resolution 100 A). The work suggested that in addition to the iron + magnetic eutectoid the surface contains primary magnetite crystalw. The decomposition must follow the equation 4Fe 1- X0 -. Fe304+ (1 - 4x)Fe, (x = 0.075) The process at 5000C is much slower than at 350 OC and is different in ocher ways. This is explicable on the basis of the two-stage mechanism. There are 2 figures. ASSOCIATION: Urallskiy politekhnicheskiy institut im. S.M.Kirova Institut meta-llurgii Urallskogo filiala AN SSSR (Ural Polytechiiical Institute imeni S.M.Kirov. Metallurgy Institute of the Ural Branch AS USSR) SUBMITTED' September 23, 1961 r d 2 1/21 S/020/62/142/002/028/029 B101/B144 AUTHORS: S a i2i-.,L,_0 '~h__bj K., and Chufarov, G. I., Corresponding Member AS USSR TITLE: The maximum rate of decomnosition of wustite 411-412 PERIODICAL: Akademiya nauk SSSR. Doklady, v. 142, no. 2, 1962 TEXT: The rate o' tnermal decornosition of wustite at 400 and 500 0C was investigated. The decomposition products were subjected to X-ray structurELl and electron-microscopir.; examinations, and the kinetics of the process was clarified by measuring the variation in specific magnetization saturation us during heating. Decomposition follows the reaction 4Fel-x 0 ->Fe504 + (I - 4x)Fe; x = 0.093. Details of the process; The preeutectoid sep~tration of Fe 3()4and eutectoid decomposition are caused by diffusion of iron ions out of lattiee points; coagulation of vacancies to pores which are not immediately filled with Fe 304" This porosity facilitates the tran9formation of neighboring sections. Recrystallization, however, is also accelaratea with increasing temperature. The pores are Card 1/2 S/020/62/142/002/028/029 The maximum rate -,,f t ion.. B1O?,1B!44 closed, and the total rate of the process decreases, There are " figure and 3 references: 1 S,,-viet dni 2 rion-SovieT., ASSOCIATION: ffral'.ikiy pij'l!fekhniche3kiy institut im. S. M. Kirova (Ural Polytpnhiiic Lpstitute imeni S, M. Kirov); Institut metallur,rii Ural;skogo filiala Akademii nauk SSSR (Institute of M-,allarg, of the Ural 'Branch of the Academy of Sciences SUBMITTED: 3ept=mber 22, !961 Card 2/2 8/020/63/146/604/024/025 W92/3101 AUTHORS: Shabalinap 0. K.1 Chuf aroy G. ~-1. 66r"iespondivg. *dxber'.* TITLEs Decomposition kinetics of- wastite-.. PERIODICAL: Akademiya n auk SSSR. boklady, v. I no.".. 46- -4.190v 90-18~Z, - TEXTs The decomposition kinetics of wdstite was. a tudied. by ~, m!eaa urJ4 the, ncti' _441: anplei specific saturation magnetization d (t) as afu on*of.time. with a lattice constant of 4,032 R'be'tween 2000C and. 50 .00C* fti.meati urs-4 .curves show that two succeseive -reactions,. take place beldw400001 pre-eutectic separation of ma&Otitei and - (2) a.- eut'dotic dedostpon ition or. metastable.wlAstite;while there is,,only'one A00001': (3):. otic do-- above -the con- composition of the original wUstite. The.iiolak f ri6tioi-,Qc(t) -of verted material was calculated-. from the, e:~periiientad- diLta,;,_Th6,b9ha*ior -of,-, a(t) is determined by the number N of pores - For d 1/2-, - the measured points satisfy the equation C!/ -a)- 6411 (Ict.1- ",era - k. and b are constantsi th6 equation is valid on. the aseuiiptio.n! that~ W Ca'rd 112 8/02Q/63/148/W4/04/02~ Decomposition kinetics of Ytistite Bipjmll proportional to a. For ix.9ri/2, the measured- P'Ointa'foilov tfie,ieiition .1/2 /,3/2 a/(1 - a) - exp(b 2ht' e n -.k' D an& b 4re Cia nit ai nts-. 2 Wher .2 V2 This equition is ,ralid on the assumption that N. i.s: pTopbrt iona 1'.t oa where D denotes th#.~ diffusion coefficient of U' -,W -1ui (1) and (2), k increases with the temperAture P to a,' as Ur n a 0~a. '44000C and decreases in reaction.(5). In 611 three, tia~tioiii, .-u is'.-practi-; cally equal and independent of temperaturej b inc,r'ses6i. bil".4000C., and decreases above this temperature. There'.are -fi*ur,ao 9 A' :;: OC I AT I U11 sInstitut metallUrgii ljralfskogq~,- ~ia (Listitute of Metallurgy'of ~he Ural..Branch of ilit A~.ade*':-. (if 14ciences USSR) SMAITTE'Di October 1, 1962 L 19397-63 F.JT Wl&ip (q)/&iT (m)/RiVP (B)/BDS AFFTG JD ACCESSION NR: AT3001931 S/29.12/62/000/000/03?1/03 6 AUTHORS:~ Kuznetsov, S.1.6, Derevyankin, V. A.; Shabalina,_ 0. K. TITLE: Some observations of the processes of dis 9 olution and g rovAh of c rys tals . ~of Alumiiium hydroxi in alkaline alumina solutions SOURCE: Kris tallizatsiya i fazoYyye perekhody. Minsk, Izd-vo AN BSSR, ,1962, 321-326 -.TOPIC TAGS., crystal, crystallization, crystallography, soludon, dissolution, -growth, Alt hydroxide, precipitation, leaching, dendrite, dendritic, lamellar, acicular, bemite, diaspore, hydrargillite, Ti ABSTRACT: This paper is a progress report on the long-term project at the Urallskiy polite khaiche ski' institut (Ural Polytechnical Institute) on the character Y of the dissolution and growth of crystals of alumina in alkaline Al solution's vrith ayer method. The, laboratory work was primarily done especial reference to the B at the Institute; indusIrial experpnents were performed by the Aluminum industry.', Investigation methods employed:Mlectron microscope, X-ray diffraction, crystal-, optical and.chemical methods of'i-naly-sis. Ea-iffir stages of the authors' work we:ie~__ published in cite6 references. The present paper is a concentrat6d,- informative; Card I ~3 L 19397-063 ACCESSION NR: AT3001931 on the mos tin~te resting data on the dis,solution and growth of Al-hydroxide crystals. (1) Procqsves of dissolution (leaching). Hydrargillite crystals in tinsat-1 urate alumina solutions, when heated to nearjb. p., breakup into fragments. Upon: this initial commint~tion, they dissolve prorr~ptly. Diaspore crystals usually dis-.- ,solve at the faces$ )V#h the formation of fissures and perforations. At times, 'the r holes in bernite o. dja~spore exhibit a sharply defined hexagonal shape. When Al hydroxides with addMons of Si oxides are leached, growths of fairly equiaxial crystalline formations of Na hydroalurno silicate (sorxie'bf'l.6_-~_rnicron diam) form on the dissolving particles. Upon full dissolution of the hydroxide crystals or- which these spherical part~Oe% had formed the latt~'r exhibit apertures. Experiments show the presence of -films of Ti compounds on the dissolving boirmite and diaspore crystals. During leaching these films cryst.allize into acicular crystals visible under an optical microscope. Photographs of these formations are shown in the article. (Z) Crystallization processes (separation of Al solutions). Without stirring, alumina solutions foym practically only antiskeletal forms of crystalline growth, so that crystals of hyd;argillite grow primarily.in the form of lamellar dendrites. -Lamellar growths form an the plane of the pinacoid. There are virtually no pris- matic growths. Thoroughly stirred alumina solutions, ex~ecially withprimer, give rise to a greater probability of the deforma~i6n of growths and, hence, various de- fects. When, in a lam'jella.r growth, spiral dislocation occurs, it may grow into a Card Z13 iI,.19j97-63 'ACCESSION NR: AT3001931 :prism. Growing dendrites undergo deformations which increase the numblOrof ~:directions of growth. The dendrites lose their SC structure and assume a fairly ;equiaxial form. The decomposition products of alumina soluotions. a-re--mrifally well crystallized; hence theyjepd_ themselves well, to-dleiit-ron-micros cope and X-ray;- :diffraction anarysi's.-tlie various crystalline products and the sequence of their -precipitation by various agents are described. The best precipitation of alumiria under the action of nonhydrargillitic P*rimers for industrial purposes is obtained with the use of a bemite primer obtained by 2500C roasting of hydrargyl- lite. Optimal primer ratio: 0.2-0.3. A brief survey is also given on the process, of. ::rccrystallization of hydrargillite into bemite',and diaspore in water and alumina- ~solutions, including ~he layerwise s tructure,a rising from the.-p~-riodic "wave-lik6l' ~character of the crystallization. Orig. art. -has 5 figq. ASSOCIATION: none ACQF I ENCL: 00, 64pr63 SUBMITTED: 00 0" SUB CODE: CH, PH,* MA#f1-EI;::. !NO REF SOV: 006, -` OTHER-.' 000. Card 3/3 SHABALINA9 O.K., CHUFAROV, G.I. I Meehan--lsm and kinetics of the decomposition of WU"Stite. Fiz. twt. i metalloved. 15 no.5t690-696 My 163. (MM 16a8) 1. Urallskiy politekhnicheskiy institut im. S.M. Kirova i Institut meta2-lurgii Urallskogo filiala AN SSSR. (Wustite) LAKERMY M.M.; LAVROV, L.G.; SHABALINA, R.I. Condensing zinc into a liquid metal in a lead-sprayed con- densator during the electrothermal treatment of intermediate products from complex metal ores. Sbor. nauch. trud. Gin- tSV8tMet4L no.19:387-396 162. (MIRA 16:7) (Nonferrous metals-Electrcmetallurgy) (condensation products(Cheinistry)) ..rj ~,~rietics c)," an fr-ot ---a,:-~ alll~-- Li 2icpuild mattes. f3;et.met. '8 no.3:3~--15 Ir'15. (MILRA 18!(,) NOSKOV, S.K., kand.tekhn.nauk; ODINOKOV, S.D., kand.tekhn.nauk; SIROTYLINA, O.V., starshiy tekhnik; KRETOVA, L.V., starshiy tekhnik. Priaimala uchastiya SHABALINAr-Y.J., mladshiy nauchnyy sotrudnik. SKVORTSOVI, I.F., red.izd-va; TEMKINA, Ye.L., tekhn.red. [Album of technological schemes and drawings of the equipment, instruments. and devices to be used in covering roofs with rolled materials] Allbom. takhnologichaskikh skhem i chertezhei oborado- vaniia, instrumentov i prisposoblenii dlia ustroistva krovell iz rulonnykh materialov. Moskva, Gos.izd-vo lit-ry po stroit., arkhit. i stroit.materialam, 196o. 48 p. (MIRA 13:6) 1. Akademiya stroitel'stva i arkhitektury SSSR. Institut organi- zataii, makhanizataii i tekhnichaskoy pomoshchi stroitellstvu. (Roof ing-Equipment and supplies) UMKOVO V.F.9 kand.tekhn.naulc [deceased]; BOGATYREV, I.I., kand.tekhn. nauk; DODIN, V.Z., inzh.; GORDIYRiKOp N.A.# inzb.; MUKHAt V,Mot inzbo; BEREZOVSILU, B.I... inzh.; KOVALEVSKIY9 r.I.p inzh.; ROGOVSKUq L,V., inzh.;-_SIIABALINA, V.I.; PETROVA, V.V., red.izd-va; ABRAMOVA, V.H., tekhn.red-~~ (Temporary instructions for carx-,'-,ng out building and assembly operations in the Par North and in permafrost regions) Vrememiye ukazaniia po, proizvodetva stroitellno-montazhnykh rabot, v usloviiakh Krainego Severa i raionov rasprost-rorn niia nnogoletnei merz1oty. VU 2-60, Maskvav Gos.izd-vo lit-ry po stroit.9 arkhit. i stroit. materia:1sms ~ 1960. 59 p. (HIU ~ 24:6) 1. Akademiya stroitellstva i arkhitektury SSSR.-,Listitut organi- zataiij, mekbanizataii i tekhnicheakoy- pomosheld stroi-bellsbv (Ruasiag Northern-43uilding-Cold weather conditions) SHABALINA, V.I., inzh. Mechanization of gluing of roll roofing materials. Makh. stroi. 20 no.10:6-8 0 163. (MA 16:10) SIIABALn[A, v.i.; EmBrTSKIY, A.D.; GORYAYEI, M.I. Isomerization of d--sabinene to 1- ck --thujene. Zhur. ob. khim. 34 no.110855 N 164 (MIRA 18:1) 1. Institut khimicheakikh nauk All Kazakhskoy SSR. GORYAYEV, M.I., akademilr; S11ABALTNA, V.I.; D.E1,11BITSKIY, A.D. Acid isomeri2mtion of saWmne.Dok'!. Ali SSSF . 58 no.1:155-156 S~4) 164 0-11RA 17:8) 1. fnqtl.tut khimicheskikh nauk All Yaz,-'S* . 2. AN KazSSR (for Gorynyov). SHEVCHWO) F.F*, otarehiy nauohnyy ootrudniki,�H~~ ~IWA,~ZS... starshiy nauclutyy sotrudnik Noctuid moths as corn pests in the Altai. Zashch.rast.ot vred.i bol. 7 no.6:29-30 Je r62. (MIRA 15:12) 1. Altayskiy nauchno-issledovatellskiy institut sel'skogo khozyayst7a. (Altai Territory6--Corn (Maize)-Diseases and pests) (Altai Territory-Owlet moths) DANCHEVSKIY, V.I.; SAVEL'YEV, B.I., BORISOV, V.V., red.; SHABALINA, Z.S., red.-leksikograf (Ital-ian-RusBian military dictionary] Italliansko-russkii vaennyi slovar'. Moskva, Voenizdat, 1965. 404 p. (MIRA 18:6) I