SCIENTIFIC ABSTRACT SAMSONOV, G.A. - SAMSONOV, G.V.

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SCIENTIFIC ABSTRACT
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AT.RVSAlMR(YV, P.A., kand.arkhitektury; GROMOVA, N.M.. kand.farmatsevtichaskikh nauk; KAPITSA, N.K., arkhitaktor- SAMNOV G.A. arkhitaktor; DANOVSKIT, V.F., arkhitektor, nauchnyy,red.; 0 5, Z.K., red, izd-va; GILOSON, P.G., tekhn.red. [Auxiliary therapeutic departments of general hospitals; manual on the planning of pharmacies. laboratories. and physical therapy departments] Lechabno-yapomogatelinye otdeleniia.bolinits obe,heho-. go tips; posobie dlia proektirovaniia aptekq laboratorii, fizio- terapevticheakikh otdalenii. Koskva, Gos.izd-vo lit-ry po stroit., arkhit. i stroit.materialem. 196o. 122 p. Wu 14:2) (HOSPITALS-CONSTRUCTICK) SAMSONOV, G.I. *Stamping parts from sheet metal without and with small waste.0 V.A.Volosatov. Reviewed by G.I.Samsonov. Avt.trakt.prom. no.9:32- 33 S '54. O(T-RA.7:10) 1. Moskovskiy avtozavod imeni Stalina. (Volosatov, V.A.) (Sheet-metal work) -ZVYAGINTSEV.? Yu.Ye.;-q"-%Q&LV'-G.I-_, inzh., retsenzent; LIBERMAN, Ye.G., doktor ekon..nauk, red.; SALYANSKIY), A.A., red. izd-va; DEMKINA, N.F., tekhn.red.. (Operational planning in pressworking shops] Operativnoe planirovanie v pressovykh tsekhakh. Moskva, Mashgiz, 1963. 136 P. (MIRA 16:7) (Machinery industry-Management) (Sheet-metal work) BRUK, Ya.S,; SAMSOITOV, G.N.; SOKOLOV, A.I. Sets of equipment with the K-52M narrow-range cutter-loaders. Biul. tekh.-ekon. inform. Gos. nauch.-issl. inst. nauch. i tekh. inform. 17 no.3;13-15 164. (14IRA 17:5) - SAM~~SO~N~Y=Y-14-IL2Lo_=b; ELIKIN, Iosif Lazarevich; MiRKULOV, Nikolay Yakovlevich; BOGUTSKIY, Nikolay Vasillyevich; KAZAKOV, Stanislav Semenovich; IVANOV, Ivan Konstantinovich; AER.LMOV, V.I., inzh., otv. red. [The K-529 (IK-52M) narrow-cut cutter-loader) Uzkozakhvatnyi kompleks K-52M (1K - 52M). Moskva, Wedra, 1964. 207 p. (KIRA 18:4) MANZHULA, N.G.; SAVELIM, I.P.; GUDYRIN, Yu.N.; qA~O_FVP G.N. Testing the IK-52sh cutter-loader with the M-87 support. Ugoll 40 no.209-43 F 165. (MIRA 18SO 1. Shakhtoupravleniya No.1 "Znanya ko=unizma" tresta Krasnoluchugoll kcmbinata Donbassantratsit (for Manzhula). 2. Luganskiy sektor-Gosudarat-- vennogo proyektno-konstruktorskogo i eksperimentallnogo instituta ugollnogo, mashinostroyeniya (for Savellyev, Gudyrin). 3. Gosudarstvennyy proyektno- konatruktarskiy i eksperimentalInyy institut ugoltnago mashinostroyeni~a (for Samsonov). DOMningdon at fm Carbim to Won OWN&. Tr. A. 26trersim and 0. V, Santxwov (SI. 1. Kalinin. Inst. Sa3 Ferrous Metals aridlrokj.~ Sfo~c;*). ze"dikays U6. 16, 41-1-OK 1951).-m-The rate of amidst ion of 8 carbide Is cmist. t const. temp. Independently of the srain Are, when 0 or chromate soln, yme word. Tbe'rate Is less Than that cif MpItit sidation A man of CrOo In H.0 In "led at too* Co #&Mple.fona- bylipSOo.andtherroultiviggasessre Ow q4 by a cunreat of 4tiod air tbrmgb the CwO &bomber. followw by the drying tnin ol POD% follo"I by Naolil aboorbem CaCls tuber asot! a afety vesed. The abmwbtrt are pe. ically vehOsed. The results am piatted and thi! value of free C is detd. as dw difference between the total C, m6d d p I gthe &cn Instant and the product of the titne r s teoluxidationotc(prrmin'). 0%irlatiml can be done with 0 at WD-10M, pmvidcd Out the. samilk is well po". (324 mesh or better). Accuracy a( 0.6%. kf~ clainwd. n. M. Koactspor Isr"dea ad dw** crpotils of hagc~s emblde. 1. L. zasymiaW, G, V. Sonsonor, and N, V. Popova. DoAkid Akaj. crystals ~ R,C, up to 10 mm. long. 0.25-0.5 mm. thick. am obtained in an clec. furnace from a mixt. of HA and tarnphlack, under ronditious of slow cooling. if B bt allowed to diffuse Aomly into the C-rich liquM around the etectmle. X-my Alatirm of amm of the sansples taek~[ the. line with J e 3.39 A.. umally attributed to D.C. but tvhlcntly due to all limpurity, rhably graphite. Absence of that fine can. v. so -ation of the purity of DjC. ,conseeluent y. serve as an indic S. Thou SIAVINSKIY' M.P., professor, doktor [deceased); 1FILIN, N.A., professor, doktor, retsenzent. SHFICHINETSKIY, Imndidat takhnicheskikh nauk-, ratsenzeat; ROGELIBM, I.L., inzhener, retsenzent,4, SARSONOV, G.V radaktor; KARAYEVA, O.M., redaktor; MIMTLOVA, V.1r. redaktor [Physical and chemical properties of elements] J?iziko-khimicheskie evoistva elementov. Koskya, Goo. nauchno-takha. izil-vo lit-ry PO chernoi i tsvetnoi metallurgii, 1952. 763 p. (ML'RA 9: 12) (Chemistry, Metallurgic) (Chemical elemeate) < ~n 0.3 , USSR/Cheii,str tirc6nlun in -a, Vacuum, "Obtaining Zirconium Carbide G. Meye3~son~PG. B. Samsonov_,Z~Moscow Ins't of Nonferrous, Metals a~d G61d im -M. I. Kalinin Zhur Prik Xhim, Vol 25, No 7, pp 744-748 By observing the rate of increase of CO given off~in calciting of a mixture of ZrO2 and carbon black,,lit. s' was found that the reacti.qn'Zr02 + 3C'= ZrC + 2C0 i . additive and is composed of successive reactions',in~ which Zr203 and ZrO are formed. The practical teW ZI range in which the reaction with formation of will.proceed in a vacuum was established and: the 263T44~'. intermediate reactions were.discovered. It .1s pq~s i l ble to obtain by the vac~mm process ZrC which con- tains no N or 0 admixtures. A fundamental errorl.was found in the work of Prescott and Hincke.(J. Chdm.:Soc.,, V61 49)-who suggest equil coexistence of Zr02 and. ZrC in the same reaction. 263T44 tal High-*itin ~,Xetals-_ 9y,- 9 "Microhardness.of the, Borides I and Nitridei.of High-Melting Metals," G. V. Samsonov, Moscow 148t of ]Nonferrous Metals an'd',Gold imeni M.' 1. Kalinin. Dok Ak Nauk SSSR" Vol'86., No 2, PP 329-332 Ketsures microbard ness,of TiB2, ZrB VB Th B, -B, - WB2, TiN,I ;ZrN and, W. 2-1 CbBV 2, Cr examn ajad-X-ray analAis showed, single-phase s btructuie of all Specimens. Tabulates physi- to6hem properties of borides and nitrides., StiLtes., conclusion that' borideG sere formed by intrusion 235T62 1of:B atoms into lattices of high-melting meUls Ind by wedging slip:.planes of these metals. 'This con~radictb assumption accepted in.:tech liierat=6 that borides do. not, belong to in- trusive phases. Includes several miciogiaphs. Submitted by Acad'G. G~ Uragov 18 Jul 52. 235T62 FILYAND, M.A.; SEMOVA, Ye.I.; POGODIN, S.A., 2asluzhennyy deyatell nauki i tekhniki, professor,-doktor, retsenzent; NZYNBSON, G.A., professor, doktor, laureat Stalinskoy premii; SAMSONOV G.V., redaktor; KAKATEVA, O.M., redaktor; MIKHAYWYA, e n cheskiy redaktor. [Properties of rare elements; handbook] Svoistva. rodkikh elemeatoy; spravochnik. Moskva, Gos. nauchno-tekhn. izd-vo lit-ry po chernoi i tsvetnoi metallurgii, 1953. 414 p. (MLHA 7:11) (Chemical elements) V. .)c -ca:L A-iiiial,- sis -in. F -rfj 111' SSSR Vol. 2", "53, DV. ru.- Analiza -om pp 92-103 Sansonc~v, G. V. o- Fuc-*- D-1.~,c-rams of the 51'ste,". Boror.-Carbon and the 1"~--twre o-," the PI-ases in This S-Tsten, S-*Uud'-ed ~abcr~re s-,~-stem and deterraUied Its ph-ysic-~I constants. SO: Zl-..urn--:L -Ko. 2, 1954 (T.-T-300,07) -C7T-CT ZELIKKAN, A.M.; SAMSONOT. G.V.; MYN, O.Ye.; STIPANOT, I.S., inshener. retsenzenl",- V.. reteenzent; FMDIW, S.A., professor, aoktor, zaalusheaW de7atell nauki i tekhniki, reteeni,ent; 110~3, Ye.Ye., professor, doktor, reteensent; AIMIXOSOV, IfAh, daktoi khimicheskikh nauk, retsenzent; SHAMRAY, M. doktor khinicheoklkh nauk, retsenzent; XCROZOV, I.S., kawUdat "icheakikh nauk. retsenzent; BOOK, Te.A.,.kandidat khImicheskikh nauk, retsbnsent; NIKOLOXV, N.S.. kandidat khimicheskikh nauk, retsenzent; ZVORTKIN, A.Ta, kandidat khimichaskikh nauk, reteenzent; BASHILOVA, N.I.. kandidat khimicheakikh nank, retsenzent; TYSOTSKATA, V.N., redaktor; KAKAYEVA, O.M., redaktor; ATTOPOTICH, M.K., takhnichaskiy redaktor [Metallurgy of rare metals] Metallurgiia redkikh'motallov. Noskya, Gos. nauc)mo-tekhn. izd-vo lit-r7 po chernol i tsvetnoi metallurgit, 1954. 414 p. (MLRA 7:9) 1. Chlen-korrespondent Akademil nank SSSR (for TaasnVev) (Metals, Rare-Ketallurgy) (78-2 B 0 ea. Fesos Wt 3- 3 0_1 03, rkwa4fo Owed ROL I obtalhed wslu~s i.342kc .=aT538-k P24, , with-, 24 NN eon to,- ;B fie/. ho~VC6~ty' Of .obtained b a 2.4 _:d U.", _~)'q / VI !'~i C /V U V Category :.USSR/dolid State Physics - Pb,~ase transformations in solid bodies E-5 Abs Jour : Ref Zhur - Fizika, No 1, 1957, No 1186 Author : Samsonov, G.V., Tseytina, N.YL Title :-C-6n_c_e_r_n_IHg-Tffe- Mechanism of Sb~ace Saturation of Iron and Sterel by Bo;on Orig Fltfb Fiz. metallov i metall ovedenie, 1955, 1, No'2,,'303-306 Abstract Based on the investigations of the microstructure and the microhardness of specimens of ArAco-iron and of steel No -.3, subjected to_ZA~uration by Boron from the solid phase at various temperatures (700 -- 1-2000) And-at various, soakings (I -- 17 hours), the authors believe that in pure iron there is a diffusion reaction of 'boron with formation of iron boride FeB, canstLng re- latively high micro-hardness of the saturated layer (on the order of'730 -- 790 kg/mm2), and that in the presence of carbonthe reaction consists mostly of diffusion on the boundaries of the grain of the solid solution of complicated /mm, the high hardness of the saturated layer (on the order carbo borides, c7in of 14oo --.9loo C7 Al 5 USSR/Solid State Physics Structural Crystallography, E-3 Abst Journal: Referat Zhur - F:Lzika, No 12, 1956, 34654 Author: SamsCmov, G. V., Zhuravlev, N. N. Iostitutien: Nore Title: On Aluminum Boride AlB12 Original Periodical: FU. meetallov i metallovedeniye, 1955, 1, No 3, 5&-566 Abstract: AlBip crystals were obtained by aluminum-thermal reduction of boric an-, hydride in crucibles. The contents of boron in the beads obtained during the melt- ing amounted to 82.5 - 82.8%. Almost all the AlB:L2 crystals were double growths. X-ray structural investigation has shown that AlB12 belcogs to the tetragonal syngony; and has the following periods: a 10.1 � 0.1; C 14.3 � 0.4 A and c/a = 1.41, P 2.79 � : 0.02, number of atoms per elementary cell approximtely 200. The electric rdsistiv- ity of the pressed powder of A1312 is related to the density as follows: In 7.588 y - 15.03; where jp is -the resistivity (ohms/cm), and y the density of tre pressed briquette. The electric resistivity of the specimens of AlB12 in compact state, prepared by hot pressing, amounts to approximately 103 ohms/cm, the thermal coefficient of electric resistivity is 0.4%/deg. The micro-hardness of AlB12 is close to the micro-hardness of B. wtit=* C, Q Imm'n Mg bodde my Mte. G. V 11'ap" ~ N 4.- .91 24 Bruicner F7 in-datiun No 3~3761 -The -. i Fs, was Prod It ~v the v;~r -therinsl and l: liv -na- T li, Sz- mate off taut at a pure.,_ within expEl- error, hitcroe3caratt. showed that the at- toys were 2-phoe before atmeall q; but those coutC. 3 to 8 after -Wiu* ne --olicrohardtless.6, e,##,04 the 2 bA 'Pam R~ PU AW Z, bii t Y.; tff aliftbo expansm was ditivitle li~~ to-a ir~. at 90 more M. suppertinC the Ides of limited solsr. of Tt% 62 TiN. Tests of oxiclatiou resistan4m at 700 to 10004 showed that the 40 mete % TiN most resistant. The soly. of TJE6 in TiN was compn. was judgedtobeg mcte%; that of T%N in Tillt was slight. 4M ------- borides of lZr,,,VUb, Ta. omit W, and the blry systeMs of certain Id ere studied. Briqueti of metal olkie 134C, and C black %vere charged kato a vacuum dec-resisthi; furnace. The aptitual conditions of boride production wc-c found from tensiornetric data. X-ray analysis of the Po4- der% of borides Ti. Zr. V, Nb. and Ta showed lattice coast 5. agreeing with those in the literature. Theds.oftheborides detd. by micropycaometer nnetj with the caW. ds. AV bdMe. an account of volatility -of W drUo. was obtained at intich lowgr temp. with the emcess of VVOj: it has the approx. compa. WIRt with the Uttice coasts. a - 3.00 Al "M a ZrB,, and Tillic t preod- M c W subsequent ng*o an WM Motm %naeff, and thek lattice cousts. were =Fly to their tin, Woporticual campus. The alloys were can4ara i corro6lon-Mist- ti ly ant, this resistance chmgiag gradually with the cozalm. Th-fe-robardn graph of the Ultem changes continuously,. in of compa. vs. dec. ccad. is a continuous curve,, id= i~ ttpwmrd Wj iadimtes that the borWes B. tam a coutiattolts of OW Solm. A. N. PeKtaff sets .2 ks -.3 if arm fat odufe'slti~s.'6f l9wor v Biiipj- oxid MOO, owovr "Kifos'~ -.46,14575r,"Tholita -con ft 0 TI A GUMQ~ly' actAT, sm equil. temp"d ~a&'A _Qf- thaf ~o " -'W- mpodds-tolbir bv&tk-jn-th-" 'itryi -P- 'wxpt e c imlcd. AH of ThOl audTIO 110'and ia;i~ at 880'1153ifi4.91042338 re*" M46 "t, 'o ues tbat it is platu~le t 4 wsum~ e$ are- taft 'In' -Mi ~WW d -it ' -otlicr han -T C ef I -a -Ing. -14231) Es'low's thli'61,i IlD lei7 aid- qcp-gf, u 8649) th j r I mV ~t -'(CL4; ... a riBj,z+;4CO 7. zi; C) u Wof o Is and Nb boride ho aU Y ts ;iis O j=d7M%d. -at 14013-1;0 tftei for 30 min, to 32 hrs.. followed by w x-tay examn. of Otte amptes. ne iWiva(Wh enefly wits fivad by cat-an. to equid 20,100 cal./molailio DiRt % M UIUCIt 113 WU Pre- O h ff" In Ml r- e mu d the Ti e sys- viously found In t n -j rot US that the-principal t tem (42AW, cat./inole)jhdicatin h d*IT occs56 d- Isciii It borw e I usma pr a e satid- sbl~s, is t ' vs. -~ tie atmnis are concladed also due to the.met4d aw T a to nilgrite during the nultual barldes diffuslon. contrary to - lik'(Powder A14 t lie vorichudons of Gkisi~ AM t vi, B0 6 1 . . - . 1260053)). A uniform solid Kin. and a cantinumts change - 1 ! in har(incss in the Tin,-NbI3, v ~xevu ~,,Ls fr~ttnd in miet4110- 1 " gy,iplti, And rtiirr-jlwdues~ anti the crystal g-rciw!h c Y during th, intr~,ng oI the At,v, -,- f-,u-i i fun,!-,. kit~,I xr,i:gIh in 'he ~11 :1 ~P- Utfi- zftt, --t 11 1::!! U'U 0 0 4A uSWvGhSmistz7 -m mtLuvr card:3 hb* .22 30151~ Authors t i~d We Sand liar, Go S*ii., ~`V. 6: 21t3m Hatutal diffusion of titanium and doblum boriddim. 'Nriodical I '_ ~Dok. AN Sm 5q- stract I TIB2-_NbB"--"`$uM:".. - VAG%a-ii ti and niobL; b6idda 6: at' bigh tei tures- leads ~Ao he formation: a, a -para . I&BO was I -to, bo -to ' - 'lainad nolvent: and this U 94 1 7. f iiiatii b nd existing _euergyl, between _thi~.Imcteallo_ ttoms -and A 6,~iistal atdimil"irid LA, he. Ti, iwi, $46 -M Gred:Id, poissai Id of TO thin Lfil6AW _4 f6it: th ?ii- Ao tr6 i IeW d A Ab re r f -~ 10 a c e an x -, U e e grea A nces. . 4 1 Germn and, Im -(1904054). - Graphil,,,'.....". Initit*ution s The H, I*' Ulimjh~jfij of ffon~ IF t. arrow Metals &nd, 1d Moscow Pree G-uWd bys Academdcian A 9' Frm*ih-_ OoU)b_er,92j 19!4.'*, 6 1~ -,~~7~7 :- ;:~ -* ~, ; , -- ~~ : , '-t- -I-- - , - - .--- - Z - - p -- , ~- -.- - - . ~ :=- - Z- a 4=pccc4th(Uty of pagiforgd bodd 1~ &"T..ftl- .1 --f. f~ " . ') " --i - FAZMIN, Vasiliy Aleksandrovich; FISHER, AlekBandr Yakovlevich; KRBSTOVKKOV, A.N., professor, doktor. retsenzent; MIC11MON, G.A., professor, doktor, retsenzent; ZIMOVSKIY, Te.I., professor, doktor, retsentent; MINISHI- KOVg M.I., kaudidat tekhnichaskikh nauk, retsenzent; SAMSONOV,.GJ-9 kandidat tekhnicheakikh nauk, retsenzent; KESHCH1931YAK&T'*' S*it-,'- i;~t tekhniches)rikh nauk, reteenzent; SAMSONOY, G.V., redaktor; ARKHANGBLI- UiYA, M.S., redaktor izdatellstva; BIRLOV, A.P., tekhnicheskiy redaktor [Vacuum in metallurgy] Vakuum v metallurgii. Moskva, Goo. nauchno- tekhn. izd-vo lit-ry po chernoi i tsvetnoi metallurgit.1956. 520 p. (Vacuum) (Metallurgy) (nn 9: 12) SAMBONOV, G. V. Samsonov, G. V. I'Some physicochemical propertied of compounds of the transition metals with boron, carbon, nitrogen and silicon." Min Higher Education LISSR. Moscow Inst of Nonferrous Metals and Gold imeni M. I. Kalinin. Chair of Metallurgy of Rare Metals, Moscow, 1956. (Dissertation for the Degree of Doctor in Technical Sciences). So: Knizhnaa letopis' Nu. 25, 1956. Moscow C-~ Category : USSR/Sclid State Physics - Systern Abe Jour : Ref Zhur -' 1, 1957 Ftzika., M No n58 Author : Samsonov G.V., Neshpnz,, V.S., Lange, L.N. E-4 Inst. Moscow MatitUte for Nonferrous Metals &td Gold Title Laws of Formation of Blaa:ry Alloys of Titanium Orig Pub Metallovedeniye i cbrabotka metallov, 1956, No 11~, 30-39 Abstract When Ti interacts witia metals that, have a similax electron shell str'ucture and a small d-iffe-,r,pzce in atamic diameters (Liot more than 18%), the additive (Zr) may have aa utlimitel solubility in the cx. andl? modification of Ti, or else Con_ tinuous series of solid s.- are f~:irmed with/? titanium with a limited Vil .-a solubility ino( Ti (Mo. V~ Kb, Ta'I' Elements having-a. different e:Lectron- shell character anA a differe---4t atomic diameter interact with'titaniim to forM solid solutir-a-s with a1imit.4ed- solubility iil'the,~d and-Ok-titaniuft- and- with dia- grams of state with c-iteabic'cr eatectzid'tramsformations (M,, Fe, Cr, -Sil Ni, Cu) or with pe:7-itectic or~pi-,:,ite6tLid-trar~if6-mati-oni (C, N., ~1)-. When Ti is smelted with elleme~,.ts of the' tramsition'groups, ame observes an expansion in the region of t-he s:,Iid solutio=s vithQ(-Ti. Card 1/1 7 . . . ...... /A;PlRavfew of iho* BbLay of Titn' ands", for Their MmWaHon. N Lor `--Reviews the jkluffibrioni dia tua dia ui gm ~ .Vilffiffied for- bhvixy Was f Ti *&.Cu;'A#,-Ax4` Be ~ ON Fb' Z -V AL SL P S rb 0 S .-AL n r ; go. e , , U . C4 No, W. U. Hi-Mn.-_Fe~ -C6;i6Ud-Nj;iad.th6auggmuo P b."'Iff . th, that have been mads for c I '1W i MmL- Q T Al "T 11 qjgkiV ki , " I Ar &I. d _pl in chenlical indUSErY- MEL Pill (; A,, 0 t USSR/Inorganic Chemistry - Complex Compoundsa cc Abs Jour Ref Zhur - Khiziya, No 9, 1957) 30277 Author Samsonov., G.V., Zorina,, M. Inst Title Preparation and Some Properties of Thorium Emboride Orig Pub Zh. neorgLn. W-1i, 1956, 1, No 10, 226o.2253 Ab5t Borides of Th were obtained by the method of va=ft. thermal reduction of Th oxide with carbon of boron car- bide and carbon black, according to the reactica 2ThO9-+ 3B4C + C -4 2nai6(t) -+- 4co. At 13oo-14ooo the process takes.place very slowly while at 18000 it comes to com- pletion. within 35-45 minutes. If the reaction is Icou- ducted in such a Ynnner as to obtain MB4, that is ac- cording to the scheme Th -f- B4(; + C -3~ ThB4 + 200 the- . 02 re is formed at 1250-13000 a product of composition 'Xhx]3yCz- (11). Density of 11 is 7.552. 11 has a teragonal Card 1/2 USSR/Inorganic Chemistry - Complex Compounds. C. Abe Jour Ref Zhur - Khimiya, No 9, 1957, 30277 1 .lattice, a 5.80, a 3.80 At, Povdered II sinters at 22300 to a compact state; melting point of II is about 24000 while the meltin _T k~ ~iabout 21500. ess of I is Ig PZi"23' Microhardn 1.7 ' '12 k Ivetric-, resis tance 37 . 10-6 OEM cm efficient of therml esm*,f., when coupled with Cu, is~2 5 zv/degree in the :Wterval 20 - 600, work function n thermoemission 2.86 W, coef- ficient of radiation 0.69 0-70- CsLrd 2/2 USSRZCvystals. B-5 Abs Jour Referat Zhur - Khimiya, No 6, 1957, 18248 Author G.V. Samsonov, N.N. Zuravlev, I.G. Amnuell. Title ~~oncerning the ouestion of Physico-Chemical Properties of Boron-Carbon Alloys. Orig Pub Fiz. metallov i metallovedeniya, 1956, 3, No 2, 309-313 Abstract An x-ray and microscopical study, as well as the measure- ment of the electrical specific resistance and of the den- 8ity of B and C alloys within the limits of C content from 5 to 72-5% by weight were carried out.. It was found that at > 5% of C, an imperfect structure,of the carbi- de B13C2 developed, which structure wascharacterized.by vacaj.L. p-.az:es on the c axis in the B13C2 lattice. The va- cant places were occupied by C atoms at 14 to 16% of C r,,aking the line -C-B-C-, which transformed later into the line -C-C-0- of-boron carbide B12C3 B40' A1.1.0ya with the imperfect lattice possess the,electron B13C2 Card 1/2 53 Card 2/2 54 R"d jdqjo wab a Rol Q mtribution of thr"'gafti" Pftl&ftr fhe Manuftetm of riaV -9D"77 ~Rsnd Abrasive Kate j 7:777-Tra-TT,-ni- 3-SS. R , 19M. [Tek~. T R -4W Ne cond.,t.oiti nf pr-pn )i~p~ in zmn~iiria rif iuat-ri;. projf.~ns it r"utancIN- !1-rm-f 'r; A 01' he fi~, rta nctier Lrz i o ThA- t --pe of atructurt E. B. -- ~M~tX .7 ................. P L p4f4S9- New Refradon, Altvrial~ for Smd!!B& dhd CAQ, of :gh-Aletting let-le Navye Odneuponfe materidly iu-l-~ -1w plav m1w gdDTavkikh metatlov. (Rtrisian.) C. V. Sam- sonov. Ogrieupory, it. 21, m % 1956, p. 12:1,la5. - A survey of various refractory materials for grospective use in SmeltT of high-111-Ating inetals. Quate. a Parge bibli ntph) of lwAtly foreign st,urces (in the subimt. Ta bles. 53 rt(!T SA~SONOV, G. V., and CHISTUMV, Yu. D. "Metal-Reduction (IMetallothermic') Methods in Chemistry and Technology," by &.'and Yu. D. Chistyakovl, Uspekhi Khimii, Vol 25, 'NO 10P Oct 5pp 1223 Work on the reduction of metals and some nonmetals (31) with metals is reviewed. Reference is made to the use of metal hydrides as reducing agents in processes of this type. The physicochemical aspects of the processes involved are discussed in detail.. The heats of formation of sow oxides and halides (including CdC12, ZrC14, UCL4, RaC12, LiCl, CeF 3) LaF , and LiF) are listed. The free energies of formation of halides in- cluaing CeF ThF Zr F4, Ce C13,,Th C14, and Zr C14 are given. Frac- p1j, 4; tically ap ied reduction processes are listed under the subdivisions of processes conducted in vacuum, processes carried out under atmospheric pressure., and processes conducted in an atmosphere.of inert,.gases or re- ducing gases. The authors say that methods of this type are extensively~ ) CrAw-,". used at present for the production of'pire metals, primarily Ba and'some light and rare metals (e.g.. Li, Be Ti, Zr I va) an Nhile in the metal-reduction processes described above the oxide of the metal being reduced functions as the oxidant, oxidants in pyro'- technics are selected on the following basis: (a) the oxidant must con-. tain the maximum quantityof oxygen and furnish it readily during the combustion of the mixture, and,(b) the oxidant must represent a rela- tively stable, nonhygroscopic compound, at least in the temperature range minus 600 - plus 600." The subject matter of the article is based to a considerable ex- tent on data taken from"GSSR publications: out of 45 references in them bibliography, 26 are USSR. [Comment: Some of the information given in thislarticle has a bear- ing an the production of materials that are of importance in nuclear tech- nology (e.g., U,, Th) LIJI Cd. Be. Zr), The discussion of, the properties, of metal fuels used in pyrotechnics is of', importance fron the standpoint of the potential use of such fuels'as propellanti in reaction motors.] The following processes are described, among others: production Of 1ithium by the reduction of lithium oxide or ofspodwnene I n vacuum with Al Si, or Mg; production of Be by reduction of BeFL> in vacuum. with Ca or Mg; production of Ti, Zr, Ta, and other metals by the reduction of their halides with Mg or Na; and production of Zr, Tt, and Ta by the re- duction of their complex fluorides. The use of oxidizing agents to raise the temperature during the process is mentioned and the proper-ties of sow oxidizing agents including Ba(KO Sr (NO KNO NaNo KCIO Ba( 21 3.1 .9 3 C'03)2, KCID BaO Us 0 Cas and Na' are discussed from tais standpoint. 7. 42 T,1 t~e-21 04, 2 4 In conclus on application of metal-reduction processes in pyrotechnics, specifically in military pyrotechnics, is discussed on the basis of inform-, tion given in two USSR hand-books on the subject. The section on pyrotechnics includes the following passage: "Among metals which can be potentially applied as metal fuels one may mention Be, Al, B, Li, Mg, Ca, Si,.Ti, V, Zr, and their alloys. The highest temperatures during combustion.must be developed by Zr, Al, Ca, and MS. At present, no metals except Mg, Al, and their alloys are ap-, plied for this purpose, although some metals which are extensively used. in contemporary metallurgy would be suitable for this application either in the pure state or in the form of their alloys. "To obtain the*maximum effect from a metal,entering into the composi-I tion of a pyrotechnic mixture,.the oxidant must be appropriately selecte-a.'~ M S N N/. USSR/ Physical Chemistry - Thermodynamics. Thermochemistry. Equilibrium. B-8 Physicochemical, analysis. Phase transitions Abs Jour : Referat Zhur - Xhimiya, No 4, 1957, 11277 Author : Saxasonov G.V. Inst : Institute of General and Inorganic Chemistry, AcadezW of Sciences USSR Title : Some Physicochemical Properties of Compounds of High-Melting Transition Metals with Boron, Carbon and Nitrogen and Particularly of Their Binary Alloys, Orig Pub : Izv. sektora fiz.. -khim. smaliza IONIh AN SSSR, 1956, 27, 97-125 Abstract : Review of work concerned with interaction of high-melting transition me- tals of groups Iv, V and Vi of the Periodic System, with boron, carbon and nitrogeA. An attempt is made to interprete some properties of the compounds thus formed in the light of modern concepts of the theory of structure and chemical bonds. Biblography 47 references. Card 1/1 ~~ ------ ------- ()7 5C; A/0 V i'~ C&tegox5;-, USSR / Physical Chemistry - Crystals Abs Jour: Referat Zhur-Khimiya, No 9, 1957, 29770 B-5 Author Samsonov G. V. Inst not~~~ Title Electric Conductivity of Some Compounds of Transition Metals with Boran, Carbon and Nitrogen, and Their Alloys Orig Pub: Zh. tekhn. fizilU, 1956, 26, No 4, 716-722 Abstract: Determirtation of electric resistance (g' ) of carbides, borides and nitrides of a number of transition metals (Ti, Zr, Nb, Ta, V, Hf, Mo, W, La, Ce) -- compounds of the type of implantation phues satur- ated with metalloid. The5 of carbides is higher than of the corresponding metals. This is an indication of the fact that for- mation of carbides results in an increase of the unfilled state of d-band and, correspondingly, of probability of scattering of carriers. -In borides of Ti, V, Zr, Hf, Ce, I&,_P is lower then, and in borides of Cr, Nb, Mo, Ta, W, it is.higber than the _~ of the corresponding metal. Borides of 2-nd group are, apparently, similar to carbides Card 1/2 -48- USSR/~hermodynamics - Thermochemistry. Equilibria. B-8 Phyaical-Chemical Analysis. Phase-Transitions. Abs Jour Referat Zhur - Khimiya, No 6, 1957, 18498 Author G.V. Samsonov,_NS. Rozinova. Inst : -1-n-st-MR5 -of Organic and Inorganic Chemistry of Academy of Sciences of USSR* Title : Some Physical-Chemical Properties of Zirconium and Carbon Alloys. Orig Pub : Izv. Sektors; fiz.-khim. analiza IONKh M1 SSSR, 1956, 27, 126-132 Abstra,t It was established on the basis of roentgenographic and metallographic research and the study of the microhard- ness and electric conductivity of Zr and Clalloys that the alloys containing 0.64 to 3.12% of C by weight were two-p-hase alloys* The--basic, (hexagonal) phase is a so- lid solution of C in Zr, and the~second (cubic) phase is a Zr carbide. Alloys containing 3.50 to 11.62% of C by Card 1/2 179 loys decreases from 3.16 A of pure ~r -to G 0.0cyp of C by weight, after which it rises from 4682 A at 3.50% of C by weight to 4.683 A at 11.62% of C by weight. )~d t r d th h id b b E C L e - ne em ov es d a. and e were PrCP a. a. T - 1- 1n P4.tilm "el CE!td.,. UAI. I2 428 -E 0.01, 4.16 :1: 0.01, 4.14 * SMTb .1 1 0.02, 4.25 � O.M. 4-79- :L- 0-02, ; microhairdness (2740 :1-- 220. 30(0 ~i- 290, MO 4: 160, 3140 t: 190 kK /5q mm-); cOeff- il Unear exPaas'an (5-2 :L- 10- :,= 6%. 6.1 x 10- z!z 6%, oj o )< VIO, 8.2 X 10 - t. f~% /degree 1: %peecffic clec. r --sistance (123.5. 306. 17 4, W.5 rmu,,h-m =.), The teat al famation of CeB- was found to be 91 -L 16 kcal 'it 10le The prope~tias are related to the electron structure f tfc hexaborides. I~ovvu Leach ME .. iju rum 4 "d;w. I -Z -,ow *W. et,4 Tbc at sAtim isotherms ime allzined Ld n, ,t~ c. the Ist i3 curred cad thc ~~Is a Stra4ht. Ulte. 7 for TiLh obeys the Ale F*. The pidde ==vc fonned "Cir and by clectrou'lif- by dMusion of a k of the oxidation for 13N it the Lsotherm) Is tfm f"- D at rlCeZO fdbwcd by a loom layer of the h4.hdr Madan 6 bmught about of bwates tItAt is formed Rovtar 18 1-11. -111 .1 . I CftL%JQUQEWAMW of bcridds of same trarssjt-~;n meEais -l'i C Paw 7~-r~ ;6L - -1 -~q ZP pp, Categoyy: USSR Physical Chemistry - Crystals B-5 Abs Jour: Referat Zhur-Khimiya, No 9. 1957, 29711 Author : Samsonov G. V., latysheva V. P. Inst : -Academy of Sciences USSR Title : Diffusion of Boron, Carbon and Nitrogen Into Transition Metals of Groups IV, V A1,[D V! of the Periodic System Orig Pub: Dokl. AN SSSR., 1956., log, 1110 3., 582-585 Abstract: Reaction diffusion of B and C into Ti, Zr, Nb, Ta, Mo and W is uti- lized to elucidate the effect of vacant d-electron sites of metals and of ionization potential of B and C on the diffusion constants D and Q. Reaction diffusion results in the formation of.the compounds TiC, ZrC, Ta,_C, Nb C, W C, Mo C, TiB- -, TaB,, NbB , Mo- Band,V,B. Values of Q on diffusion of B, C and N (from another paper) into trans- ition metals of groups IV, V AND VI, reveal the fo" owing regularities: 1) in the same group of the periodic systerp Q increases with atomic number of the metal; for the given metal, Q increases in the series B, C, N. Low values of Q in the case of B are attributed to the low ioni- Card 1/2 -22- Category: USSR / Physical Chemistry - Crystals B-5 Abs Jour: Referat Zhur-Rhimiya, No 9, 1957) 29711 zation potential of B; 3) on transition from metals of groups IV and V to those of group VI, Q increases slightly in the case of B and sharply in the case of C. This is interpreted on the basis of the theory of Pauling (Pauling L., Phys. Rev., 1938, 54, 899). Differences in values of Q on diffusion of B into metals of groups IV, V AWD VI,_ level off in comparison with C; the authors attribute this to decreas- ing effect ofdeficiency of d-sublevel as a result of the formation of structure elements from atoms of B (chains, layers and framework, con- nected by covalent bonds). SAKSONOV. (6orgiy Valeatinovich- PIOTICIN. Semen Takovlaviah; OLIKHOV, I.I.,- or;' redaktor isdatellstva, WASSON. I.M.0 tekhnieh*eakiy redaktor LProduction of iron powdarj Proizvodstvo zheleznogo porashka. Koskva, Gos.neuAno-takhn.lzd-vo lit-ry po ahernoi i tevetnoi metallurgil, 1957. 348 p. (MIaA 10:7) (Powder setallura) '(P, bl, ~j SKIY, Yakov Semenovich; RASTORGUYST, 5V_ 12aliAlolt F%"=0_ WOPOPM 14. , rodaktor izdatellstva; ORMORT*9 B.F., professor-doktor, reteenzent; TRFT'YAKOV, V.I. kandidat tekhrLi- cheskikh nauk, retsenzent '~hnicheskiy redaktor. ;MIKHAYLOVA, V.V., te [Hard compounds of metals irith high melting-point] Tverdye soedi- neniia tugoplavkikh metallov. Moukva, Gos~nauchno-tekhn.izd-vo lit-ry po chernoi i tsvetnoi metallurgii, i957. 388 Pe (MIRA 10:4) (Heat-resistant alloys) c LARM 1K, ffqrk Moiseyevich: SMYUKOV, Nikolay Nikolayevich; BELTAYEV, A.I., prof., dokt.; retsenzent; VFJJM, R.L., kand.tekhn.nau)c; reteenzent; VANYUKOV, A.V., retsenzent; XROL', L.Ya., retsenzent;.A retsenzent; LRONIDGV, N.K., lnzh., retsenzent; ZflD1CHUZHIffA,,Ye.A. red.; BLIKINA, L.M., red.izdatelletva; MIKHAYLOVA, V.V., tekhn.red. [Metallurgy of nonferrous metals] Metallurglia tsvetnvkh.metallov. Moskva, Gos.nauchno-tekhn.izd-vo lit-ry po chernoi i tsvetnoi metallurgil, 1957. 535 p. (MIRA 11:1) (Nonferrous metalg--Metallurgy) of na,,comrounds he transid(m n -eir melts Lq#~~d th Ai- 'h ,1 6, 76 V :,-,57 F[igtuh tr Inst : Institute of Metal Ceramic and Special Alloys, Academy-of Sciences, Ukrainian, SSR. Title : 14icrohardness and Tantanlum Carbide in the Region Where they are Homogeneous. Orig Pub Dopovidl AN MR, 1957, ITO 3, 247-250 Abstract Experimental data ara given on the measurement of the mi- crohardness andthe electric resistivity ofalloys in the system Ta-C In the region vhere the carbides Ta2C and TaC are homogeneous. It is porposed to treat the results on the basis of the electron structure of the atoms Ta and C. Card 1/1 i Sd 122-3-6/3b AUTHOR: Samsonov, G.V. , Candidate of Technical Sciences, Dotsent. - -d - ' '' - e TITLE: ompon nts made of Boron Carbide (Izdeliya iz karbida bora) PERIODICAL: Vestnik Mashinostroyeniya, 1957, Bb-3, PP. 24 28 (USSR) ABSTRACT: The properties of bo= carbide compared with other hard materials are stated in a numerical table. The preparation of components of boron carbide by hot sintering under-pressure is discussed and described with the help of drawings and numerical data7 taken mainly from foreign periodicals and patent litera- ture. Some applications are discussed; original applications are mainly those for diamondless dressing of grinding wheels. Tests carried out at the First National Ball Bearing Factory (lGPZ imeni L.M. Kaganovicha) with the internal grinding of holes. showed that a dressing pencil of boron carbide of 18 mm diameter and a height 23 mm stood up under shop conditions to 168 hours of service, and so ensured hole tolerances of between 8 and 10 microns. The ratio of volumes removed from the grinding wheel and the dressing pencil varies between 800 and 8 000 ior boron carbide whilst'.: for carborundum it varies between 200 and 60. There are 4 figures, including 1 photograph, 4 tables,and uardl/l 32 references, of which 9- are Slavic. AVAILABLE- Library of Congress. V, 5 V ATJTI~DRS: Neshpor, V.S. and 5amsonov, G.V.(H.V.) 21-5-13/26 TITLE: New Borides of Rare-Earth Elements (Novyye boridy redkozemell- nykh elementov) PERIODICAL: Dopovidi Akademii Nauk Ukrainelkoi RSRp 19579 Nr 5f PP- 478- 479 (USSR) ABSTRACT: The authors obtained the borides of dysprosium, holmium and lutecium by means of the vacuum-thermal method. They were subjected to X-ray and chemical analyses. Roentgenograms of all these compounds are completely similar and indicate the presence in each 9f them of two phases; cubic and tetragonal so that the composition of these borides is as follows: DyB6, DyB4, HoB6, HoB4, LuB6 and LuB The constants of their lat- tices are cited in Table I of Ge article. The intensities of the lines of the two phases in the roentgenograms are approx- imately equal; most of the lines are ascribed to the phase of MeB4. The article contains 1 roentgenogram, 1 table and 6. Card 1/2 references, 2 of which are Slavic. New Borides of Rare-Earth Elements 21-5-13/26 ASSOCIATION: PRESENTED: SUBMITTED: AVAILABLE: Card 2/2 Institute of Metalloceramics and Special Alloys of the AN Ukrainian SSR (Instytut metalokeramiky i spetsaplaviv AN URSR) By V.N. Syeahnikov(V.M. qvyechnikov), Member of the AN Ukrainian SW 4 March 1957 Library of Congress /I J-n S 0 Aj 0 ILP.,L'HOR SAIZONOV G.V.,NEC-HPOj V.S.,KU-INTSEVA G.A. 109-5-14/cr_ TfTLE -G-n-f H-P-1-e U-111 o ns hi _t_-;C p Between Thermoemission Constants of' rans .,.etals(and Their Compounds with Several Metalloids)and Electronic Structure. (0 svyazi termnoe-maissionnykh nostoyanrtykh perekhodnykh metall-7(i itch soyedineniy s nekotorymi metalloidami)s elektronnoy strukturoy - Russian) P-LIHIODICAL Radiotekhnika i Ilektronika,1957,Vol 2, Nr 5,PP 631-636 N.S.S.R.) ABSTRACT ZLn attemDt is made here to determine the relation between the elec- tronic work function in thermoemission and the electronic structure of transitive metals ( and their compounds with ~b'bron carbon and nitrogen). It is shown that the work function depends on the atomic structure of the metal and decreases with decreasing degree of screening of the electrons of incompletely occupied d-atom shells of transitive metals. The work function can be brought into connection with the quantity of dispersive power of the atoms of transitive me- tals which are characterized by the criterion 1/Nn. 11 - chief quantum figure; n - the number of electrons in the incompletely occupied d-shell, it decreases with increasing 1/Nn. In metalloid compounds of transitive metals with bor6n ., c-arbon and nitrogen the work func- tion should increase with increasing I/Nn for the corresponding transitive metals.This is confirmed in the case of borides,but in the case of carbides and nitrides it can not yetbe considerled to be, Card 1/2 an established fact. The ionizing potential of the metalloid atom On the Relationship Between Thermoemission Constants of 109-5--14,/22 Transitive Metals (and Their Compounds with Several -Yet-alloids) and Electronic Structure. exerts considerable influence on' the amount of the work function of metalloid compounds. A reduction of the work function is to be expected in the M02-MeC-HeN series, where Me is a transitive metal of groups lVa, Va, or VIa. The work function is in most cases smal- ler in the case of metalloid compounds th an in that of the corres- ponding metals 1 table, 4 iilustrationg, 6 Slavic referonces). ~Tot ASSOCIATION diven. PRESENTED BY 5 UBiJITT ED 25.6.1956 AUILABLE Library of Congress. Card 2/2 ri rl .-S 6 v, 6C- - V AUTHOR: NeShpor, V.S. and Sams 126 '-',onov,--G.V. TITLE: On the problem of brittleness of met-a-1- .1o'fds compounds. (K voprosu o khrupkosti metallopodobUkh soyedineniy.) PERIODICAL:"Fizika Metallov-i Metallovedenie" (~hypics of Metals and Metallurgy), 1957, Vol.IV, No.1 (10), pp.181-183 (U.S.S.R.) ABSTRA.CT: The coefficients of linear expansion of a number of metalloids were determined and their modulus of elasti.eity was estimated on the basis of a formula proposed by I . Ya. I. Frenkell (3). In a table, p.181, the coefficients of linear expansion, the elasticity moduli, the mean square displacements of the molecules in the crystalsand the brittleness of these compounds are given, some of the data being based on information published in literature. The following compounds were investigated by the authors:. Mo2~ WC; TiC, ZrB 2 2 TiB 21 ZrC, TiN, CrB2. The values given in ... the table for W C NbC TaC and VC are those given by Koster (Zs. f. Metalli?Q'e. 1~48, 39, 111). 1 table, 1 graph, 7 references, 3 of which are Russian. Institute of Metal Ceramics of Special Alloys, Ac.Sc. Ukraine: Piloscow Institute of'non-ferrous, metals and gold imeni M.I. Kalinin. Recd. Mar.22, 1956.. .ALTEORS: Samsonov., P~,'_V,,,.and Solonnikova, L. A. 126-5-3-30/31 TITLE: Diffusion of Silicon in Transition Metals (Diffuziya kremniya v perekhodnyye metally) PERIODICAL: Fizika hletallov i Metallovedeniye, 1957, Vol 55 Nr 31 pp 565-566 (USSR) ABSTRACT: Transition metals form compounds of high'electrical.- conductivity with silicon (Ref.1), which can become superconducting (Ref.2), which have a metallic lustre, etc. Orystallograp'hically, silicides are substitutional phases (Ref-3). unlike carbides and nitrides, which are interstitial, or borides, which shov, some signs of being insterstitial, as well as some layered features typical of silicides. The metals used were Ti, Nb, Ta, Cr, M0, W1, Fe. Co and Ni; the diffusion data were worked up to give the activation energies of diffusion. The cY711ndrical sDecimens were saturated with silicon in an oven while 'immersed in silicon powder containing activating additives, The thicknesses of.the silicided layers were determined from etched cross-cut sections. Wafers less thick than the silicide layer were examined with X-rays and by Card 1/3 chemical analysis; in all cases the layers were found .Diffusion of Silicon in Transition Metals .126-5-3-30/31 to consist of disilicides. The results were worked up in the normal-a-ay for reactive diffusion (Ref.4). The activation energies (in cal/mole) given in the Table were derived, and compared -with those for B, 0 and N in the sqjne metals (Refs. 4, 51 7). The silicon was found to give the lowest activation energyl although, formally, speakinG, one would have expected it to give the 13rges since silicon has the largest atomic radius (1.18 b, ,,,hile.B, C and N have 0.9, 0.77 and,0.71-i respectively. The figure shows that the activation energy is inversely proportional to the ionization potential of the metalloid. The electronic properties, rather than the radius, are therefore heredecisive. Although silicon gives lowactivation energies, the silicides have comparatively low values of the physical -oarameters, relative to borides, carbides and nitrides. his occurs because the high-melting carbides and nitrides (Ref.8), and partially the borides, are inter- stitial in typel %-.,hile the silicides are substitutional. In the first three the shear deformation in hardness Card 2/3 testing, and the general deformation in melting, are Diffusion of Silicon in Transition Metals' 126-5-3-30/31 resisted by the cross-l-inkling action of the metals, while the silicides, having graphite-like layers weakly bonded together (Ref.10), deform comparatively readily. The silicides therefore often melt even below the meltingpiint of metcnls and S ~'licon7and the hardnesses do not exceed 1000-1500 kg/mm , while the borides nitrides and cai-bides give values of 2000-3000 kg/mmt (Refs. 11, 12). In.Fig.1 relations are graphed of the activation energies for metal-like phases to atomic radii and ion,~-zation potentials of the metalloids. E, kcal/molevs..r., A i Ix~ eV., Note: This is a complete translation without including the information contained in the table, lish. P*' ~P There is 1 figure 1 tablq and 12 referinc 'n SDie ASSOCIATION: Institut met~flokeramiki i spetsial nyUls'piavov AN Ukr.SSR (Institute of Cermets and Special Alloys, Ac.Sc., Ukr. SSR) SUMITTED: January 22, 1957 1. Silicon--Diffusion 2. Metal si-licides--Preparation Card 3/3 3. Metal silicides--Properties 129-12-2/11 AUTHORS: Bal'shin, M. Yu. and Samsonov, G.V., Candidates of Technical Sciences. TITLE: Forty years of powdermetallurgy in the Soviet Union. (40 let Sovetskoy poroshkovoy metallurgii). PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1957, No.12, pp-~ 15-25 (U.S.S.R.) ABSTRACT: The first part of the paper deals with prewar and pre-1917 developments, mentioning that in 1932 fifty tons of "pobedite", thirty tons of I'vokar" and sixty-nine tons of "stalinite" were produced and during that year these cemented carbides were used in 1400 Soviet plants. An All Union Scientific Research Institute for Cemented Carbides. (Vsesoyuzniy Nauchno-Issledovatellskiy Institut Tverdykh Splavov) was organised, the work of which determined to a certain extent the development of the Soviet cemented carbide producing industry during the post war years. This Institute contributed a great deal to the development of the process of manufacture of shaped cemented carbide components. It is claimed that the Soviet Union is In the forefront as regards production of cemented carbides and this resulted in considerable successes in the fields Card 1/5 of machining of metals, mining, oil and geological drilling. Between 1949 and 1951 a highly efficient method of Fort-y 'years of powder metallurgy in the Soviet Union. 129-12-2/11 producing pure borides of high melting point elements was developed (Ref.8) and also methods of producing silicides and a number of diagrams of state of carbides, borides, silicides and nitrides were investigated (Refs.9-11). Cemented carbides were used as substitutes for diamonds in trueing grinding wheels and for machining hard watch and instrument jewels of the type of rubies and leucosapphires. New thermo-emitters for electronic,devices (lanthanum boride) were developed and also high resistance resistors. At the Institute of Metalloceramics of Special Alloys, Ac.Sc. Ukraine (Institut Metallokeramiki Spetssplavov AN Ukr.SSR) intensive investigations are proceeding relating to cermets which consist of composition of oxides with carbides and of metals with oxides; a considerable part of this work was carried out by Ya. S. Umanskiy, G. A. Meyerson, B. F. Ormont and V.V. Grigorlyev (Ref.12). An important contribution to the theory of alloys of hard, high melting point compounds was made by I. I. Kornilov (Ref.13). The Soviet chemical industr7 developed methods of production of boron-silicate Card 2/5 powders. F. I. Sham a and V. N. Yeremenko investigated Forty years of powder metallurgy in the Soviet Union. 129-12-2/11 Card 4/5 alloys, P. I. Rebinder, V. I. Likhtman and I.N.Smirnova, Institute of Physical Chemistry, Ac.Sc. (Institut Fizicheskoy Khimii AN SSSR) contributed a great deal to the study of the relations governing the structural transformations in iron-graphite materials (Ref.16); their results enable evolving a rational technology for producing materials with an iron structure. Bimetallic lead bronze liners on a steel strip base and also trimetallic liners (steel base, powderedcopper- nickel layer, tin babbite) were developed by V. V. Saklinskiy, A. A. Kokorev, V. A. Khazov and G. S. Konstantinov. Of great importance are welding electrodes, the coatings of which contain waste steel powders; their use simplifies welding and increases the productivity by over 30%. A. S. Zaymovskiy and others have developed sintered magnetic materials, particularly the alloy alsifer (7.556 Al, 10% Si, 82.5/06 Fe~ The technology of producing permanent magnets and pressed magnets from alni and alnico alloys was developed by Zaymovskiy, A. B. Alltman and others. Work on developing magnetically soft cermet materials was carried out by N. I. Frantsevich and his team in the Institute of AUTHOR:-Samsonov, G. V. 73-3-1/24 TITLE: Intermediate Stages in the Formtion of Carbides of Titanium, Zirconium, Vanadium, Niobium. and Tantalum. (F.romezhutochnyye Stadii Reaktsiy 04razovaniya Karbidov Titana, Tsirtoniya, Vanadiyaq Niobiya i Tantala.) PERIODICAL: Ukrainskiy Rhimicheskiy Zhurnal, 1957, Vol.23, No-3, pp. 287-296 (USSR). ABSTRACT: Tensiometric measurementa were carried out on carbides of the above listed metals in vacuum according to the reaction: MeX 0y + zC = Me XCz-Y + YCO. X-Ray and chemical methods of analysis of the intermediate and final products and the calculation of the approximate values of their heat of f ormation verified the f orm~ation of TiC and ZrC via the intermediate oxides Ti 2031 Ti 3059 TiO and Zr203 ZrO and also the formation of vanadium carbides (from the V20 3 + 5C layer), of niobium and tantalum carbides (from the Nb 205 + ?C and Ta 205 + 7C layers) via the intermediate Aides VO, V 40 and TaO 22 Card 1/3 73-3-1/911- Intermediate Stages in the Formation 6f darbides of Titanium, Zirconium, Vanadium, Niobium. and TaAtalum. Ta 0.,," The values of M~(=',chan e in heat content, cal/mole) of T* 0 and TiO obtain4difrom' tensiometric. data are given .2 3 in T, The tens 3*-Oil;.;;ric curve of the reaction Oble 1. Ti + 30 = TiC + 2C0 (d~ gram, Fi' . 1) shows not 3--but 4 9._ pre~-sure jumps. The fir.u occurs at 1.100 1 .150'0 $ the se qpnd at approximate .' -. aef same tempe rature , the . %trd betiHeen 1250 and 1300(,0 , id. the last at 1280 - 1320 C. X-P-ay analy-sis of Iiven-in Table 2 confirm the s= g dada -obtained by eh m9cal analysis. Diagram,,Fig. 2 shQws the tensiometr cikrve of ZrO + ZrG = 2CO, Wi't1h 3 Pressure jump TAe chemicai composition of the lower Zr oxides is- gi'7en " Table 3. and line diagrams obtaiiied-by X-ray- al"_-Lysis%hown in diagram, Fig. 3. It is shqwn that ZrO a. cubical grid With an interval of _..V ).- 4.63 X (viz. Table I Tensiometric investigations on the conditions of fc nation of vanadium carbide were carried oiA together wi-th G~.,, V. Moskalik (diagram, Fig. 4). The heat of formation of vanadium carbides was calculated from the co-ordinates of oints on the tensiometric curve Card 2/3 (imTn diately precedi ig the pressure jumps) and are listed F9 ?3-3-1/24 Intermediate Stages in the Formation of Carbides of TitanWmf Zirconium, Vanadium, Niobium, and Tantalum. in Table 5- Further the formation of Niobium. carbide was investigated and the relevant data are given in graph 5 and Table 6. Conditions for the formation of carbides of niobium. and tantalum in vacuum are nearest in those having the composition NbC and Ta0- Approximate values for LH of the metal oxides are given. There are 6 diagrams, 8 tables and 24 references, 12 of which are Slavic. SUBMITTED: November, 23, 1956. ASSOCIATION: Institut-hletallo?-Ce37dmie*.aiid-'-Special Alloys. (Institut Metallokeramiki i Spetssplavov AN USSR) AVAILABLE: Library of Congress. Card 3/3 er AUTHORS: Samsonov, G. V., and Popova.N. M. 439 TITLE: Preparation and Certain Properties of Thorium Sulfides (Prigotovleniye i nekotoryye osobennosti. sullfidov toriya) PERIODICAL: Zhurnal Obshchey Khimii, 1957, Vol. 27, No. 1) PP- 3-10 (U.S.S.R.) ABSTRACT: Efforts were madelto improve the method of preparing thorium sul- fides by direct combination of the thorium. with the sulfur.- A thorium powder containing 99.8% of Th and thoroughly purified sublimed sulfur were used as basic,matirial for the experimeints. The first series of tests was conducted at temperatures ranging from 400 to 8500 with intervals of 50 to 1000 with a running period of about 30,min. Parts of the prodicts obtained were chilled in the open airand parts in an H2S stream. During the ohilling of reaction products in a hydrogen sulfide stream the sulfur content increased sharply and the total.of Th+ S, reached 100%, especially in experiments at 6000. The composition of procbets-obtained with consideration of the abseme of free Th is Th 253- ThS-and Th2S,4 were observed to be the most stable sulfide phases in the Th-S syztem. Results obtained by extending the reaction period from Card 1/3 439 Preparation and Certain Properties of Tharium Sulfides 30 to 240 min. are given in Fig. 2. Results obtained at ODOO with a change in sulfur content in the initialbatch and 30join. reaction time are presented in Fig- 3.- Certain physical,prvperties of thorium sulfides were determined including their melting koint which.was studied by direct meltirg of samples. The melting of the sulfides at 2400 24500 and 23000 took place without any noticeable decomposition. Special samples prepared by calcination of the powder throulh hot molding were used for studying the microstructure and microhardness of the thorium. sulfides. The sulfides were seento react with the graphite of the molding forms at temperatures much lower than those necessary for the conversion. of the sample into solid state. Th 2S3 samples baked at 1960 20000 showed a diphase'structure. The Th2S3 'compound was alsdo found to be a variable.composition phaae.,-extromely hcatogencouls and rangirg from,-ThSI.22 to ThS, .59 The relation between the properties of thorium. sulfides and ot~eranalogous compounds of intermediate metals with metal-loidswas established. Attention is called to Card 2/3 ASSOCIATION: PRESENTED BY: SUBMITTED: AVAnAELE: Card 3/3 Preparation and Certain Properties of Thorium 439 Sulfides considerable stresses originating daring the calcinating by hot molding which are slowly eliminated during ani following anneal- ing of samples. Three tables, four graphs and one illustration. There are 20 references, of which 6 are Slavic. Moscow Institute of Non-Ferrous Metals and Gold (Moskovskiy Institut Tsvetnykh Metallov i Zolo.ta) February 16, 1956 SOV/137-58-11-23268 iranslation from. Referativnyy zhurnal. Metallurgiya, 1958, Nr 11, p 203 (USSR) AUTHOR: Samsonov,, G. V. TITLE: Activation Energy During the Diffusion of Boron, Carbon, Nitr .ogen, and Silicon Into Highmelting Transition Metals (Energii aktivatsil pri diffuzii bora, ugleroda, azota i kremniya v tugoplavkiye perekhodnyye metally) PERIODICAL- Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zolota, Nauchno-t~,khn. o-vo tsvetn. metallurgii, 1957, Nr 30, pp 192-222 ABSTRACT- The process of diffusion of B in Ti, Nb, Ta, Cr, Mo, W, Fe, Go, and grade-3 steellof C in Ti, Zr, Nb, Ta, Gr, Mo, W,, and Co, and of Si in V and' in the original. Transl. Note) Ti was investigated. Saturation of specimens.of the above metals* with B and Si was achieved in a stream of purified H at various temperatures (from 1000 to 20000C for 2 hours). it was established that the corresponding carbide, boride and silicide phases are formed in the course of the diffusion. The cal- culation of the coefficient of diffusion D was accomplished according to the following formula: 'D(C' --C?) = C K where C is the amount of 1 0 h Card I/Z B, Si, or C necessary for the transformation of I cm of the metal SOV/137-58-11-23268 Activation Energy During the Diffusion of Boron, Carbon, (cont. into the boride, silicide, or carbide phase, (CI-C?) is the difference of the concentra- tions of the metalloid on the borders of the layers, and K is a quantity dependent on the radius of the specimen, the thickness of.the diffusion layer, and the saturation time. It was found that the activation energy of the diffusion of the metalloid into the transition metals of a given group increases with increasing atomic number of the metal. The activation energy increases during the transition from the borides to the carbides and nitrides. These regularities are related to the magnitude of the ioniza- tion potential of the metalloid and the degree of incompleteness of the CL -electron. sublevels of the transition metals. The activation energies of the reactive diffusion were compared with the crystalline lattice -energy of the corresponding carbide and boride phases determined through calculations. The activation energy decreases with the increase of the energy of the lattices which are formed upon the diffusion of the phase. L D. Card 2/2 ips 1 10,11 ; I A F_ SOV/ 137-58- 10,-Z0802 Translation from: Referativnyyzhurnal, Metallurgiya, 1958, Nr 10, p65(USSR) AUTHORS: Sirota, N.N.-Eamsonov, G.V.. Strellnikova, N.S. TITLE: Electrical Properties of Some Metalloid Compounds and Solid Solutions Thereof (Elektricheskiye svoystva nekotorykh rnetal- lopodobnykh soyedineniy i ikh tverdykh rastvorov) PERIODICAL: Sb. nauchn. tr. Mosk. in-t tsvetn. met. i zolota, nauchno- tekhn. o-vo tsvetn metallurgii, 1957, Nr 30, pp 368-374 ABSTRACT: The results of measurement of the electrical resistivity and thermoelectrornotive force of a number of carbides,~ sili- cides, borides, nitrides, and certain binary alloys thereof, all Card I/ I in a Cu-containing vapor, and of preliminary determination of the magnetic susceptibility of a'number of two-component alloys of these compounds are presented. The specimens for investi- gation are made by hot extrusion. The electronic structure of the objects of investigation is used as the basis for discussion of certain results of the work. 1. Intermetallic cowpounds--Electricall~ properties 2. Alloys--Electr4cal properties R.A. afloa (;i,) of ~iu ) NbE6, nd th~iraltoy-_wesdetdi. by the increase in wt. ap,g Sq. Cin I A specimens made of powdets, sint-xed and hot, pressed, Annealed in If, and slqwly ei~iled in th-: furn"cr- it wds rwalnized that the change-in-wl. inctlind was not ac- cnrate but sufficlent fcc precAse, "lative values. Tile ' r6utgenograAle d. of Nb% and 1113, used vrere 7.03 and 4.53 g./cr., resp. The plou of Ap vs. temp. were exponen- tial functims: on semilog coOrdmatev they consisted of 2 Linear branches lotessmting at M*. Fbe rate o! oxidation z above 6W* wns more raptd. This was attributed to a. change in structure and a wcakeniog 4 the forces betiween, the atom of thebody and the filnx. The plots of filat filick-1; wide dilai it 59 6ql~ % NbBs an&TM.. The 0 Weft, - - - - 9 -2 12.9, X 10 X 10-1; Zdox. X-.Io-- gjjsq. ,~m. - - 14 Th ese resU btdkate that the principles o oxidatiou 4 solid Wins. Of h"Wes am the.silne as those of carbides- MEW.-.. A_~t- 5, SAMSONOV. G.V., kandidat takhnicheskikh nPol , dotsent, -1-- Boron carbide products. Vent.mash.37 no. 3:24-28 Mr 157. (KIBA 10:4) (Boron carOds) m V AUTHOR SAMSONO-V _G.V. 20-6-:W5Z TI TU Fe- the Tungsten-Boron System. (Fazy sistemy vollfram - bor.- Russian) PERIODICAL Doklady Akademii Nauk SSSR 1957, Vol 113# Nr 6, pp 1299-1301 (U.S.S.R.) ABSTRACT On the occasion of the radiographical investigation of the tungsten-boron system 3 borides were found in the beginning: the tetragonal W23 and WB as well as the hexagonal W 2B5* Later the existence of a high-temperature modification of tungsten monoboride P-WB was determined. Aacording to publis- hed data W2B ( I -Phase) kas very close homogeneity limits, whereas (6-phase), has wider ones. The previously determine& phase WB2 is probably identical with W 2B5 if there is a deficiency of boron-atoms. For the purpose of a pricise de- termination of the phase range of the tungsten-boron diagram, the author investigated alloys of this system by the methods of mioro-hardness as well as by methods of radiography and metallography. The results obtained make it possible to sug-, gest the following phase ranges of the tungsten-boron system: CARD 1/2 The Phases of the Tungsten-Boron System. 20+Y459 1~ a-range of a very restricted solid boron solution in a-W. 2 two-phase range a plus 9,with the 9 -range having a very restricted homogeneity range. 3) two-phase range g+ 6 (W 2B + WB) 4~ Homogeneity range of WB (6-phase) 5 two-phase range 6 + E (WB + W 2B 6) homogeneity range of W 2 B5which is probably very wide which does not coincide with ZIESSLIWS data. (1 table, 5 Slavic references) ASSOCIATION: Moscow Institute for Non-Ferrous Metals and Gold "N.I.KLLININ" PRESENTED BY: A.N. FRUMKIN, Member of the Academy. SUBMITTED: 29.10. 1955 AVAILABLE: Library of Congress. CARD 2/2 a Ive v 20-6-23/42 AU72HORSs Portnoy, K. I. , and Samsonov, G. V. TITLEs Properties of Threefold Alloys TiB - CrB ZrB 2 2 2 (Svoystva troynykh splavov diboridov titana, khroma i tsirkoniya) PERIODICALt Doklady All SSSRf 1957, Vol- 116, Nr 6, pp. 976 - 978 (USSR) ABSTRACT: For the modern technical engineering of high mechanical stress at high temperaturesborides of viscous rare metals are of interest, because they show a strong hardness and resistance to abrasion as well as stability toward acids. They shall be studied from systems in which extreme values of these properties are to be expected In literature data on the systems mentioned in ("he title are almost entirely missed. Therefore the work under consideration has been attempted on diboride alloys lying at a " beam cross section" "luchdvoy razrez") TiB -CrB (50 z 50 mol.%) ZrB Since it was ( ' K known-t and Zr form un- hat borides of Ti and Cr, as well as of interrupted series of solid solutions, meanwhile borides of Cr and Zr are into one another soluble in a limited sense, it was inter- esting to follow, how the solubility of CrB (?) in a solid solu 2 tion TiB 2- CrB compared to its limited solubility in CrB 2(? ) and l Card 1/2 its uniterrupie d solubility in TiB22 and in reverse, vary itself. 20-6-23/42 a - GrB -ZrB PtqXrtJAj of Threefold Alloys TiB 2 2 2 ..Conclus-ion3i It has been state.d that the solubility of ZrB 2 in E , Cr)B 2 amounts to about 40 mol.%, whilst that one of (Tij Cr)B2 TI in ZrB2 is below 10 md1%. The range of solubility of ZrB in CrB raises at the decom o ition t fold b id f Z B i C ?Ti )~ n a s o r wo or e r p q 2* Zirconiumboride forms together with a component of the latter . (TiB2 ) an uninterrupted series of solid solutions. In the range of the monophase of the solid 08 lutions of ZrB2 in (Ti,, Cr)B in a d l h f f 9 e uenc e o rom 1900 there isamaximum of micro- 1rdnesss samp 3900 kG~=2 (at 20 mol.% ZrB and a maximum'of electric resistance (216/a /cm at 10 mol.% Zr%). There are 3 fig"resp and 6 re- ferences, 5 of which are Slavic. ASSOCIATIONt A3.1-Union Scientific Research Institute for Aircraft Materials (Vsesoyuznyj, nauchno-issledovatellskiy institut aviatsionnykh ma- terialov) PRESENTEDs June la, 1957, by A. A. Bochyar, Academician SUBMITTEDi June 7, 1957 AVAILABLE: Library of Congress Card 2/2 CV Al .5 0 N -, \1 L 18(0,7) PHASE I BOOK EXPLOITATION SOV/2170 Alcademiya nauk Ukrainskoy SSR. InstItut metallokermiki i:spetsiall- nykh splavov V.oprosy poroshkovoy metall~rgii i prochnosti materialov, vyp. 5 (Problems in Powder Metallurgy arid Strength of Materials, Nr 5) Kiyev, Izd-vo AN USSR, 1958. 172p. 2,000 copies printed. Ed. of Publishing House: Ya. A. Samokhvalov; Tech. Ed.: V.Ye. Sklyarova; Editorial Board: I.N. Frantsevich (Resp. Ed.), I.M. Fedorchenko, G.S. Pisarenko, G.V.Samsonov, 6d V.V. Grigorlyeva. PURPOSE: This collection of articles Is Intended for a wide circle of scientists and engineers in the research.and production of pow- der metallurgy. It may also be useful to~advanced students of, metallurgical institutes. COVERAGE: This collection of articles describes the results of in- vestigations made at the Institut metallo keramikii spetsiallnykh splavov, AN USSR (Institute of Powder Metallurgy and Special Al- loys, Academy of Sciences, Ukrainian SSR). The physical and chem- Card S?TN Problems in Powder Metallurgy (Cont.) SOV/2170 ical properties of materials used in powder metallurgy are dis- cussed. Materials described as new, production processes, and methods and results of mechanical testing are described. No per- sonalities are mentioned. References follow each article. TABLE OF CONTENTS: Samsonov, G.V., and V.S.Neshpor. Some Physical Characteristics of Mefall--IlYe -Compounds. The authors, describe results of investigations of microhardness., coefficient of thermal expansion, calculation of the inter-atomic bond between the metal and the metaIloid, and factors affecting this bond. They conclude that the hardness of the njetal-like com- pounds is determined chiefly by the bonding forces between the atoms of the metal and the metalloid. Yeremenko, V.N., G.V.,Zudilova, and L.A. Gayevskaya, Chromium- Niobium Structural Diagram 36 The authors describe the results of an investigation.of the chromium-niobium system by thermal, metallographic, and radio- graphic methods. Card,*6 S-1/1-37/60/000/0 2/03/0 10 91ravislation from: Referativnyy zhurnal,. Metallurkiya, 1960, No 2, p -92, 2779 a, AUTHORS: Meyerson,, G.A., Samsonov., G.V. TITLE: On the Conditions of Obtaining Boron Carbide PERIODICAL: V sb.. Bor. Tr. Konferentsii po khimii bora I yego soyedineni Moscow, Goskhimizdat, 1958, PP 52 - 57 TM: The main condition for the preparation of high-quality B 4C powder Is-the limitation of the temperature of the preparation process by the tempera- ture of peritectic decomposition (2,200(?C)entailing-an increased amount.,of Cfre in the B4C powder and reducing its,polishing capacity. The best industrial method of B C production is the reduction of B,;,O3 with carbon in electric resistance grnaces where the temperature of tRe process may be regulated. It Is shown that fine-grained powder.of the theoretical composition may be obtained by magnesium-:thermal reduction of B 203 at temperatures of 1,000- 1,4oo0c. A.P. Card 1/1 S/13T/60/000/02/04./olo Translation from: Referativnyy zhurnal Metallurgiya, 1960, No 2, p 92, 2781 AUTHORS.- Meyerson, G.A., Samsonov G.V., Kotellnikov, E.B., V2povaL M.S., Yevte.yeva, I.P., 1Ta-snenk&V-a-. S.D. Tl=: Some Properties of Alloys of High-Melting Transition Metal Borides PERIODICAL: V sb.: Bor. Tr. Konferentsii po khimii bora i yego soyedineniy, Moscow, Goskhimizdat, 1958, pp 58 - 73 T-M-. Information is given on the production technology and results of investigations into the phase composition and the structure of products of diffusional interaction between initial borides of the TiB14 TiB2-W,,B,'l - 2 C anAr%-Cr, systems. The authors studied also microhardne phases, heat- resigt-;-nce 0~ alloys and the structure of cinder of variouscomposition. A.P. Card 1/1 Translation from. ReferativnyY ahurnal. Khimiya, 1959, Nr 23, P 35 (USSR) AUTHOR. TITIE-. PERIODICAL: ABSTRACT- Card 1/2 Sams ov, G.V. \The Activation Energies of the Diffusion of Boron, Carbon, Nitrogen and Silicon Into High-Melting Transition Metals V sb.: Bor. Tr. Konferentsii po khimii bora. i yego soyedinenly. Moscow, Goskhimizdat, 1958,, PP 74 - 89 Based on the roentgen- and chemical 'analyses as well as the measurements of microhardness and weight change of,the samples, it has been established that the diffusion of B into Ti, Nb, Ta, Cr, Mo, W, Fe and Co, of carbon intd'hiPZr ANbY'1Ta,v1Cr,-1Mo,-1W andIlTo and of Silicon into Ti is an active diffusion, i.e., it is accompanied by the formation of the pertaining boride, carbide and silicide phases. Based on the microscopic investigation of the thielmesses of the diffusion layers as well as on the data of the regions of homogeneity of the pertaining phases and the results of the chemical and roentgen-analyses,'the activation'energies have been calculated and equations of the temperature dependence of the coefficients of diffusion of B,, C and Si into some of the metals indicated were derived. It has been,--_, SOV/81-59-23-81116 The Activation Energies of the Diffusion of Boron, Carbon, Nitrogen and Silicon Into High-Melting Transition Metals shown that the values of the activation energies of the diffusion of B, C and SI into transition metals are connected with the value of ionization potential of the diffusing metalloid and the degree of incomplete filling of the d-electronic sublevels of the transition metals, and agree well with the physicalconstants ofthe transition metals and the pertaining boride, carbide and silicide phases. Authorls summary Card 2/2 131-1-7/14 AUTHORS: Samsonov, G. V. , Neahpor, V. S. TITLE: Production, Properties and Technical Use of Molybdenuri-Disilicide (Polucheniye, svoystva i tekhnicheskoye primenenlye disilitsida molibdena) PERIODICAL: 06neupory, 1958, Nr 1, pp. 28 - 35 (USSR) ABSTRACT: This is one of the most important difficultly fusible compounds (:do Si 2) which in recent years are used at high temperatures. The extremely high resistance to the influence of atmospheric oxygen 0 at a temperature of up to 1700 0 and other agressive gases, as well as to acids and molten metals is to be considered its basic property. Its properties and behavior at different temperatures are described in detail; K. I. Portnyy also participated in these tests. The behavior of Mo Si in the atmosphere of various gases g and in the air is represente by the curves of figures 1 and 2 and then exDlained. Molybdenum-disilicide is resistant to the action of the following molten metalst sodium, lead, bismuth, tin, mer- cury and other metals which do not form disilicides. Tabl- I shows the resistance of I-JoSi to the oxidation in an oxygen flow at 12000C after Previous Keating in metal melts. h1oSi . s inclined to Card 1/3 . creeping and is not sufficiently resistant to heat2shocRs ksee 131-1-7/14 Production, Properties and Technical Use of Molybdenum-Disilicide table 2). The other mechanical and physical properties of MOM are enumerated in detail and explained and its use at high temp perature is described in, detail. Figure 3 shows a molybdenum heat-~ er with and without a MoSi 2-covering. There are many pos ,sibilities of the preparation of Mosi -powder , the simplest one consists,of a direct combination of mo~ybdenuat with silicon: Ho +23i = MoSi 2. The tests of a direct synthesis were perforated together with N. M. Popova. Up to a temperature of 1100 aC the tests were performed in a laboratory furnace TK 30/200 in an argon atmosphere (figure 4), at higher temperatures in a vacuum resistance furnace. In the La- boratory of the Institute for Powder Metallurgy and-Special Alloys AN Ukrainian SSR MoSi was prodwed at a temperature of 1000 0C and one hour halt. I. D. Kadomysellskiy also participated in the ex- periments. Figure 5 records the porosity dependence of the test samples on the sintering temperature and figure 6 that on.the,.time of sinterintr. Ficure 7 shows products of molybdenura-disilicide,o.f the firm Plansee in Austria. Conclusions: a) MoSi is ona of the compounds most resistant to scale' and chemi- cal inHuences, which property is connected with its hi-h thermal conductivity, hardness and stability. It is used for the produc- tion of refractory products, heatproof alloys and covers for mo- Card 213 lybdenuat products and for the solderinG of ceramics rrith metals; . I . 131-1-7/14 Production, Properties and Technical Use of Mol-1-denum-Disilicide b) the mozt suitable method of the production of -iiosi powder con-, sists in the heating of briquettes of a mixture of mo~;bdenum- ana s Jlicon L -povider in the course of 1 hour at a temperature of 1000 C and the manufacture of products by hot preszing of LioSi -powder at a temperature of 1900 0C. There are 9 fi-r-res', 2 tables,2and 27 re- Q ferences, 9 of which are Slavicv 7 German and-10 English. ASSOCIATION: Institute for Powder Hetallurgy and Special Alloys AN Ukrainian SSR (Institut metallokeramik~i i spetsialtnykh splavov A111' USSR) AVAILABLE: Library of Congress 1. Compounds-Properties 3. Compounds-Application 2. Compounds-Production Card 3/3 129-1-8/14 AUTHOR: Samsonov, G.V., Candidate of Technical Sciences. TITLE: -Ma-racterOf the Interaction of Titanium Boride- with Metals of the Ferrous Group (Kharakter vzaimodeystviya borida titana s metallami gruppy zheleza) PERIODICAL: Metallovedeniye i Obrabotka Metallov, 1958, No.1) pp. 35 - 38 (USSR). ABSTRACT: Chromium carbides, although having a relatively high chemical resistance interactwith titanium carbide forming ternary phases C-Ref.2') and, for instance, for such systems as TiC-Si a eutectic type of diagram has been observed which is obviously linked with the low loss of free energy during Sic formation. The author considered it of interest to investi- gate the relation of other Ti compounds (borides, silicides, nitrides) with metals of the ferrous group. In this paper, the interaction was investigated of titanium boride with Fe, Co and .6i. Since the work was not aimed at detailed investi- gation of these systems~atechnique was applied which is des- cribed in a paper by A.N. Zelikman and D.S. Bernshteyn [Ref.4-1, utilising titanium boride powder produced by the vacuum thermal method [fZef - 51 and containing 68. 90'16 Ti , 31- 02% B and 0. 02016 Cfre Card 1/Snd powders of Fe, Co and Ni which have been reduced by hydrogen 129-1-8/14 Character of the Interaction of Titanium Borides with Metals of the Ferrous Group. titanium boride as compared to systems containing titanium carbide. This is attributed to the presence of strong, covalent bonds in titanium boride which levels out the diff- erence in the behaviour of boride in its interaction with metals of the ferrous group. It is possible, in principle, to utilise titanium boride as the hard component of metallo- ceramic sintered carbides. There are 5 f igures, 2 table s - and 5 references, 3 of which are Slavic. ASSOCIATION: Institute of Metallo-Ceramics and Special Alloys, Ac.Sc. Ukrainian SSR (Institut Metallokeramiki i Spetsplavov,AN USSR) AVAILABLE: Library of Congress. uard 3/3 - --------- --- - AUTHORS.- --Samsonov, G. V., Candidate of Technical 64-58-2-8/16 _ Sc7J en_c-e.-,-Zr5-tTi-n, S. Ya., Candidate of Technical Sciences TITLE; Powder 1,,ietallurgical.Materials for Chemical Industry (14letall.okeramicheskiye materialy dlya khimicheskoy promyshlennosti) PERIODICAL: Khimicheskaya Promyshlennostf, 1958, Nr 2, pp. 42-46 (ussa) ABSTRACT: The present paper gives a survey.on the kinds of production as well as on the various types of finished products of pow= der metallurgy. It is mainly foreign processes and finished products which are mentioned. In the production of powder the authors point out the importance of structural charac= teristics,as well as ofthe size of particles, with physi= co-chemical and mechanical methods of production being men= tioned. A~table of the characteristic features of metal powders obtained-by different methods is given. The-Dres= sing and sintering of metal.powder or powder mixtures re= spectively are carried out either simultaneously or by soaking the porous pressed article in liquid metal, or Card 1/4 also by means of a pressing into bands and other forms