SCIENTIFIC ABSTRACT GELD, P.V. - GELD, P.V.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000514620003-0
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: August 23, 2000
• Sequence Number: 3
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

AUTHORS-
TITLE:
25r-4
Gelid. P.V. and Gertman,
jensity
S/126/61/012/Ool/oo6/020
E193/E480
Yu.M.
of liquid alloys of silicon with cobalt and
nickel
PERIODICALt Fizika metallov i metallovedeniye, 1961, Vol.12, No.1,
pp.47-50
TEXT: It was shown earlier by the present authors (Ref.l: FM,
196o, 10, 793) that when a liquid ferromtlicide is formed by
reacting liquid iron and silicon. a volume contraction AT
amounting to 36% takes place. This effect could be attributed
either to stronger interaction between dissimilar particles
(CSI. SI'CKcFe SIot_
,> y heat-treatment stabilizes and
*hardens austenite and has an anomalous effect on the coefficient
of self-~iffusion of iron. The present investigation was under-
taken because itw6s not clear how such treatment affected the
permeability of steels to hydrogen. Permeability was studied on
Fe-Ni-(12.6 and 2576 Ni) alloys at 280 - 1 020 0C. It was found
that the permeability of oc-phase with a martensitic structure
changes exponentially with temperature up to the A a point.
the activation energy being 17-19 kcal/mole. Equilibrium
austenite has activation energies for the hy~drogen-penetration
proceAs of 28-31 kcal/mole; the value depends little on com-
position. The reverse martensite process, leading to the forma-
tion of hardened autenito, greatly complicates the hydrogen-
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S/126/62/013/006/005/ol8
Influence of .... 9111/E352
migration stage and causes the activation energy ito increase.
The degree of phase work-hardening of austenite and the acti-
vation energy for hydrogen penetration are clearlyrelated,
apparently because fracture of mosaic blocks and growth of
internal stresses complicates the hydrogen diffusion stage in
austenite. It is thus possible that the development of intra-
granular boundaries leads to an increase in defect concentrations
which act an hydrogen 14traps" with a higher energy barrier as
regards movement along them. The first y->oL->y transformation
cycle has an mpecially great effect on permeability-to hydrogen;
later, the effect is usually negligible. 'Activation energy
changes appreciably if not lose - than 50% y-20t transformation is
achieved in the direct martensite transformation; at 75% the
effects are especially great. There*are 4 figures and 1 table..
ASSOCIATIONs Vrallskiy politekhnichookiy institut im,
S.M. Kirove, (Ural Polytechnical Institute ime
S*M, Kirov) I
SUBMITTWo November 16, 1961
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..r-iv

PETRUSHUSKIYO, M.S.; GELID, P.V.
Solubillty of carbon in liquid ferrochrome and silicon chromium.
Zhur.prikl.khiza. 35 no~2:233-242 F ;62. (MIRA 15!2)
(Chromium alloyo) (Carbon)

SHCHIPANOVA, L&V*; GELID, P.V.
.........
3ntbalpy of solid-and liquid germanium. Isy. vyse uchebe zav,
toyet. not. 5 no.68111-112 962, (MIRA 16:6)
1. Ural'skiy politekhnicbeskiy Institut, kafedra. fisiki.
(Germanim-Therml properties)

KWTSISj R.P.; GELID.. P.V.
Maermochemistryl, heat capacityp
milicidese lzv.rp.uchab.zav.j
I
1. Umllakly politekbalcheskly institute
(Iron sillaiden-Therml properties)
enthalpy and entropy of iron
chern.met. 5 no.11:12-19 162o
(MIRA 15*12)

SKRIPOVA, T*.A.j GELIDA P.V.
Studying the distribution of aluminum in forrosilicon by the
method of local spectr= analysis. Izw.v*.uchsbqmr.; chern.met.
5 no.U:196-2M 962. (MIP' 15212)
1. Urall ekiy politekhnicheskiy institut.
(ftrrosilicon-Speotra) (Muminum-spectra)

GELIDI P.V.; LIPATGVAj V.A.; SIDORENKO, F.A.; SHUBINA, T.S.
Antiferromagnetism of ~Crleboit. Fiz. met. i metalloved. 14 no.2.-
298-299 Ag 162. (MIRA 15:10)
I* Urallakiy politekhnicheakly institut imeni Kirova,,
(Ferromagnatism) (Irorr-ailicon alloyg--Me lography)
!77777 -- I".. " ''.,
iw~ -,;

POFOAT, Aleksandr Artemlyevich; red.,; SFT&NMG,
red.; SYROINA, M.M., red. izd-va; VALIKOVA, G.T.J. tolechn.
red.
[Theoroticnl basis of the cherdeal and hert trentrent of stool)
Tooretichoskie osnovy khimiko-torrichaskoi obrabotki stali.
Sverdlovsk., Metallurgizdnt, 1962. .118 p. (MIRA 15:10)
(Steol-hoat troatrent~ (Diffuuion coatings)

YESIN, Oleg Alekseyevich; GELID, I.,j~.y~l--V2adimir-Q.Yi;h;-14I.KULUISK]7. A.S,)
prof., doktor, kdU6ff_z_eht; BURIKOV, M.M., red.- izd-va; vlA~LYUK,
R.M., toklm. red.
[Pbyaical chemistry of pyrometa]Iurgrical processes]Fizichoslmia
khimiia pirozeta3lurgicheskikh protsessov. Sverdlovsk., Yetal-
lurgizdat. Pt.l.(Reactions between gaseous and solid phases]
Rcp.ktsii mczhdu gazoobraznymi i tverdymi fazami. 2., ispr. i
dop. izd. 1962. 671 p. (MIRA 15:10)
(Metals at high temperature)
(Chemistrys Physical and theorotical)

AUTHORSi V Squi id V V
Trj;!A: or: 116110 1 d, Im
Py
PMODICAL~. Irr"t1ya IryaqhM ueh*bVW smedeniy, 11*yetwa evialimgSia,
POO
TEXT; The Outbors Gandod clut'hIgh!- ikirs, ist muse,
6ingle_cryst~l goisakiii'moolm"s 'at 0.-; 2,29D C~-, iir-Wvi pnVom cUdOtends.
lng. the tilermal - pr6pe~tjes of gersmium, Tbe: pailts'obtalned mhm'tmt the "It-
p o in t ~ 0 f 'vj4. a in ww W'" n iair,'938 039.%rc Wi ~I 10. in with r4 V_
4pe
sults-'obtalned by; Hassicin, 2%us ad Trd**r* (meltira Point. &i- 93T.2, 6). The
enthalpy jUMPLIn.the . - jj% 1s _ &b6Ut. j'ar 8.93 ko&l/
pwltu*, Po t. .123.'UW
values exceed those bbtalned. by" WItifie Gx*lmli, OwIU md do Roolm. Below aw
meltIM point, geromium anthalpy,em be desoribed"matisfactorig bly Neusy a
from whlah'It rollaims that CP is
equatloh, 5.98 4 0.82410-
Over the meltift- point the- ORWrImental daita siv in a better silresompt. Nub
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S/849/62/000/000/013/016
A006/A1O1
AUTHORS: Sidorenko, F. A., Gelvd, P. V., Dubrovskaya, L. B.
TITLE: floantgenostructural analysis of lebolte
SOURCE: Vysokotemperaturnyye metallokeramichesk-lye materialy, Inst.
metallokerm. I spets. spl. AN Ukr. SSR, Kiev, Izd-vo AN Ukr. 3SR,
1962, 1211 - 132
TEXT: It was experimentally established that lebolte Is able to show
diametrally opposite properties depending on its structural state, I.e. metallic
properties in high-temperature modification and semiconductor properties in
low-temperature modification. The authors present additional data on structural
peculiarities of M-and P-leboite, which explain to a certain degree the causes
of their different electric properties. Results are given of metallographic*and
roentgenographic determinations of the concentration limits of M-leboite stabl-
.lity; of the picnometrical determination of the alloy density and the type of
silicon solid solutions In disilicide. Moreover, the authors determined expan-
sion coefficients of 0(--lebolte along the crystal lattice axes by coAparing ex-
perimental and calculated intensities. The structural parameter z was made more
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s/849/62/ooo/ooo/oo/06
Roentgenostructural analysis of lebolte A0061AI01
precise by plotting rF,2 -series and series of electronic density. At t0800C
0~-Icbofte was found to be stable In a concentration range from 53.5 to 56.5% SI.
0~.-leboite represents a phase of variable composition (on disilicide base) with
vacancies In the Iron sublattice. The concentration of vacancies changes within
12 to 216. The values of expansion coefficients along the Inttice Lxen correspond
to the given model. The structural parameter z of the M-leboite lattice is equal
to 0.275 and describes Its structure better than value z = 0.25, previously used.
A schematic model of fb-leboite structure is proposed. (Figure 3)'The bright
circles represent the centers of silicon atoms; centers of Iron atoms are de3lg-
nated by dark circles; the bright-and-dark circles represent the locations whose
halves are statistically occupied by iron atoms. The model proposed yields, to
the first approximationsatisfactory values of calculated intensities Including
the mean angles. Dislocations of atoms leading to normal Interatomic distances,
improve the agreement of calculated and measured intensities. It is assumed that
the semiconductor properties of 13-le,oite may be explained by the primary co-
ordination sphere of silicon atoms which is very similar to that of pure silicon
and germanium. There are 3 figures and 2 tables.
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Roentgenostructural analysis of leboite
Figure 3. The model of P-lebolte structure.
s/849/62/boo/ooo/bo/06
A006/A101
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8/849/62/000/000/015/016
Aoo6AI01
AUTHORS: Gol'dberg, A. I., Lipatova, V. A., Gel'd, P. V. -
TITLE: Electric properties of iron alloys with silicon containing leboite
SOURCE: Vysokotemperaturnyye metallokeramicheskiye materialy. Inst. metallV7
ker. i spets. spl. AN Ukr.33R, Kiev, Izd-vo AN Ukr.SSR, 1962j 140
A7
TEXT; The authors present results of investigating the electric proper-
ties of iron alloys with silicon produced from commercial and pure initial ma-
terials, such as transformer iron and electrolytical iron with single-crystal ai-
licon. Bauic measurements were made with alloys containing 40 to PO weight %
Si. Electric conductivity QT= 1/0, the Hall-coeffaient (Rx) &no the thermo-
emf (ct) of the aforementioned alloys were investigated.--- Hi gh- temperature 0c;le-
boite, existing in the Fe-Si system, was found to have metal conductivity. p,
ot, and Rx values are low and dp/dT > 0. 1,ow-temperature 0-leboite, ainthesized
from both commercial and pure initial matorials, shows high p,cl and R., and a
negative temperature coefficient of specific resistivity, indicating its semi-
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S/849/62/000/()00/015/016
Electric properties of iron alloys with... Aoo6/Aioi
conductor nature. In the temperature range from 0 to 40o0c the ~13-phase is
characterized by extrinsic conductivity. The mean activation energies of the
admixture levels of commercial alloys, calculated from temperature dependences
ofoT and ~X, are in a satisfactory agreement with each other and are approximate-
ly equal to 0.2 ev. Temperature Investigations of pure specimens (at 20 - 40CPC
and im some cases 7000C) have shown that the ~a-phase is characterized by extrin-
sic conductivity, which at 3509C passes over into Intrinsic conductivity; the
forbidden band width is then close to 1 ev. Conductivity of 6-leboite, sinthe-
sized from commercial materials, has a hole nature; this Is caused by the pre-
sence of about 0.2% Al. The 4~-phase, obtained from more pure materials, shows
an electronic conductivity which is replaced by hole conductivity when 0.1% Al
is added. All bi-phase specimens containing A-leboite and silicon, show semi-
conductor properties. There are 5 figures.
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8/849/62/000/000/014/016
AGO61AI01
AUTHORS: IgIshev, V. N., Gel'd, P._V
TITLE: Electric conductivity of Iron alloys with silicon at high
temperatures
SOURCE: Vysokotemperaturnyye met4llokerainicheskiye materialy, Inst.
metalloker. I spets. spl. AN Ukr. SSR, Kiev, Izd-vo AN Ukr. SSR,
1962, 133 - 139
TEM The authors present results of measuring the specific electric
resistivity of Iron alloys with silicon, containing from 0 to 7 weight % 31,
in a 20 to 1,000 0C temperature range. The alloys were prepared from transformer
iron,' commercial silicon lip - 0 (Kr-O) and special eiectrolytic iron with fragments
of grade M-1 single-crystal silicon. The alloys were melted In an Induction
furnace. Cylinder-.shaped specimens 50 - 60 mm long were annealed prior to the
.measur,ements. The results obtained are illustrated by a number of graphs. It
was found that solid solutions of SI In Fe, bi-phase alloys consisting ofoe-and
E -phases, and Fe-monosilicides, shown metallic conductivity with a relatively
iow specific resistance. Ordered solid solutions, whose composition approaches
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s/8'iq/62/ooo/6oo/ol4/Oi6
Electric conductivity of iron alloys with... A006/A101
Fe Si, show a negative temperature coefficient of resistivity In paramagnetic
StAte, and can be associated with ferromagnetic semiconductors. As the Increan-
Ing Si content in the particular PoSI-31 system approaches compositions, corres-
ponding, to monosilicide, a gradual degeneration of metallic conductivi t~ to seml-
conductivity is observed. This Is caused by an increased content of thes(5-phase.
Annealed alloys, which are rich ln(3-lebolte, are typical semiconductors up to
temperatures ofS.3-4S.~ransformatlon. Metastable o40 hr of samples with Initial structure of mnrtensite and bainite at the
same temperattire. Conversion of platy form of carbides Into granular
noticeably Increases water permeability in even greater measure, the higher
the content of C in steel. For increase of water permeability of steel It Is
.considered expedient first to carry out decomposition of austenite up to
obtaining of martensite of lower bainite, and then to increase temperature to
650 - 6800 for the purpose of formation of structure of granular cementite.
SUB CODE: MM ENCL6. 00
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KRAIT,~*;j 111o7.
Cartlain the-mophy-ifaid. -.f Sbor.
nauch. trud. Urhl. polltolh. inat. no.1~6&115-10
NTRA 176)

GEWDF-P,V.j TSKHAY, V.A.
Average densities of valence eleotrons in FeO VO and TiO
Zhur.strukt.khim. 4 no.2s235-244 Mr-Ap 16: '~' (;&A 16:5)
1. Urallskiy filial AN SSSR, Institut khimii, Sverdlovsk.
(Metallic oxides) (Electrons) (Valence (Theoretical chemistry))

RMOV, R.A.; GELID,__P.V.
Kinetics of gas removal from steel products. Izv. vys.
ucheb. zav.; chern. met. 6 no.21lIl-114 163. (MIRA 16:3)
1. Uralloidy po3itekhnicheskiy inatitut.
(Steel ingots-Hydrogen cou~o0t)
(Annealing of metals)

RYABOV, R.A.; GELID I-P-.V-; GOLITSOV, V.A.
Meet of crystal lattice defects on hydrogen penetration in
metals. Izv. vys. ucheb, zav*; cherno met, 6 no,4:98-103
16-3. (14IWi 16;5)
1. Urallskiy politekhaicheukiy institut.
(Steel-Hydrogen content) (Crystal lattices--Defects)

SIDOWN0, F.A.; GELID, P'.V.
Nature of the -phase in the system Fe - Si. Izv. vys. ucheb.
sav.; chern, met. 6 no.7-.140-148 163. (MIRA 16:9)
1. Urallskiy politekhnicheskiy institut.
(Iron-silicon alloys-Metallography)
(Phase rule and equilibrium)

GELID, P.V.; PETRUSHEVSKIY, M.S.; KORSHUNOV, V.A.; GERTMAN, Yu.M.
Properties of liquid manganese-silicon alloys. Izv. vys. ucheb.
sav.; chern. met. 6 no.7t160-161 163. (MIRA 160)
1. Ural'skiy poUtekhnichoskiy institut.
("anese-silicon alloys)

KRENTSIS) R.P.; GELID, P.V.; KALISHLVICH, G.I.
Thermocheudstry of iron silicides. Heat capacity.. enthalpy wA
entropy of FeSi and F95Si.3. Izv. vys. ucheb. z&v.; chern. met.
6 no.9:161-168 163. (MIRL 16:11)
1. Urallukiy politekhnicheskiy Iristitut.

KREMMIS, R.P.; GELID, P.V.; KALISHEVICH, G.I.
Thermoche .mistry of iron silicides. Heat capacity, enthalpy and
entropy of lebeauite. Izv. vys. ucheb. zav.; chern. met. 6 no.11:
146-152 163. (MRA 170)
1. Urallskiy politekhnichaskiy institut.

~8/07BJ63/008/003/011/020
B117/B186
AUT11ORS: Shveykin, G. P.t 1~e~ld_, P.V.~_Alyamoyekiyt S. 1.
TITLE': Conditions for the formation of niobium oxyoarbides
PERIODICAL: Zhurnal neorganicheakoy khimii, ve 8, no. 3, 1963, 6.89L-696
TEXT: The phase composition of the intermediates formed during the
reaction between niobium oxides and carbides at different temperatures.
and preasures ran studied by x-ray diffraotion analysis;, To produas
specimens, mixtures of oxides and carbide were bri.quett (4t
2.5 - 3 tons/am2 ) and sintered at 1400-1900C.in~4nouo (A,10-3 ma"NS) or
in pure argon I atm) for 10-225 min, The specimens made from t.he
lowoot oxidea and obrbido sintered in vacuo contained no oxyoarbid.*#
In the specimens produced in argon, however, an oxycarbide phase tae.
former] due to high partial carbon oxide pressure near the Teaction son*.
Carbon atoms enter the niobium monoxide lattice to-a. limited extent-or,,"
not'at all. The formation of n1obium oxycarbides is due to penetration
of oxylgen into the carbide lattice. In the Kb - C - 0 system, oxycarlbidea
Cnrd 1/2

8/078j63/000/003/01,1/Oio-
Conditions for the f6rmation of B117/BI86
may occur in the cubic "NbC" or the hexagonal "I?bC f orip. Both
0-5
have wide ranges of homogeneity which become narrower with
incr,~,a,Onr, temperature and decreasing pressure. The stability of
oxycarbides also depend temperature and pressure in this way. OxycarbiAe*
mn,j be formp-I an Intermediates when sintering large and compact
NbC + Nb205 briquettes in vacuo. There are I figure and 4 tables.
S U:3M rl T ED February 16, 1962
r r1 2

L 10397-63 EWP(q)/EWT(X)/BDS--AFFTC/A8D-4D
ACCESSION NR: AP3003415 S/0078/63/008/007/1639/1644
AUTHOR: -Dubrovskaya, L. B.; Gelld, P. V.
TITLE: Homogeneity range and nature of ;~Mi~-I/dlsilicide
SOURCE: Zhurnal neorganicheakoy Mimij., v. 8, no. 7, 1963, 1639-1644
TOPIC TAGS: chromium disilicide) chromium monosilicide, silicon, homogeneity,
CrSi sub (2 + x), lattice parameters, photomicrographic method, phase composition,
densimetric method, substitutional solid solution, atoms per unit cell, heat
resistance, chemical resistance, electrical conductivity
ABSTRACT; Since chromium disilicide possesses such desirable properties as high
heat, oxidation, and acid resistance, high thermal emf and electrical conductivity,
and a negative temperature coefficient of conductivity below 300--400C, additional
study of the compound has been conducted. An attempt was made to define more
accurately than in previous etudies the composition range of stability of Cr_Si
sub (2 + x) and to determine the nature of this variable-composition phase.
Twelve samples containing 50--55.9% Si were prepared by smelting vacuum-distilled
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100ZITI-ov NR: AP3003475
Cr metal with Si single crystals in corundum crucibles in an argon atmosphere.
The phase composition of the alloys was determined by photomicrographic aralysis
and x-ray analysis by the Debye-Sherrer method; the lattice parameters, by x-ray
analysis; and the density, p_jcnometrically with the middle fraction of refined
kerosene. The number of SiAnd Cr atoms per unit cell was calculated from the
exper:~mental densities or-one-phase alloys. A discrepancy between the micrographic
and x-ray data was noted. The sensitivity of the x-ray method was found to be
relatively low because the lattice parameters of chromium disilicide were quasi-
independent of its composition. Hence preference was given to the
photaaicrographic data. The density data confirmed the microgmphic data. The
experimental and calculated plots of density versus conlpDjition shown In Fig. 1
of tbi! Enclosure lead to the conclusions that 1) the limit of coexistence between
chromtum monosilicide and disilic�de is about 51% Si, and Si segregation begins
at abcrat, 53% Si; and 2) the CrSi sub (2 + x) homogeneous phase is a substitutional
solid solution. Consideration of the change in the lattice parameters of CrS1
sub (2 + x) with x al3o, exludes the possibility of an interstitial and of
subtraction solid-solution structure for CrSi sub (2 + X). Tkras, the conc,=ing
reSUltS Of MiCrO3Copic and derLsime-tric studies point to the existence of a
ho:wganeyus s-,,bstitutional solid solution within the CrSi sub 1.90 (50.-tj Si) to
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L 1 -6
AMIN NR: AP3003475
CrSi sub 2.05--2.09 (52.5--53,0% Si) range. The total number of atoms per unit cell
remained constant within the above range, but the number of Cr atoms per unit cell
and of Si atoms per unit cell varied from 3.08 to 2.90 and from 5.82 to 6.o6,
respectively. Orig. art. has: 3 figures, 3 tables, and 6 formulas.
ASSOCIATION: none
smmm): igian62
SUB CODE: 00
Ond 3/4
DATE AcQ: o2Aug63
NO REF SOV: 010
ENCL: 01
omm: oo6

EWP q)/EWr(MJ&DS
L 18166-63 _A"JA4P~__ '
ACCESSION ?'R'_s___A_P_3O_0'4_3__58 i1006163/bo8/boqfi66_012OOl
AUrROIRSt Alyamovskiy, S. I Shveykin, Go Pol Calld, P. V.
TITLEt Oxidatiovi of niobium and its lower carbide 5_7
kj
SCURCEt Zhurnal.neorganiches oy khimii, v. 8, no. 8, 1963, 2000-2001
TOPIC TAGSt niobiumq niobium carbide,
ABS.'LnACI!s The intermediate products of niobium oxidation were analyzed in order
to clarify the poosibility of the existence of niobium oxycarbides. X-ray analy-
sis of the hexagonal carbide Isb2C show3 that the index lines 101, 110, 112 as
well as some others are washed out. A further oxidation of this sample for a
period of four hours resulted in the formation of a new phase. 7-ray of this
now: phase shows that it is similar to the X-ray of Nb2Cp but that It has addition-
al lines which are located close to the high-interference lines corresponding to
a lower carbide. By using V, I. Kikheyevla (Hentgenometricheakiy opredelitell
mineralov, Moskva, Goageologizdatq 1957) homolog method, it was possible to
obtain an X-ray 6f the new phase and determine its elemental structure. The
periods of the rhombic structure of the new phase were as followes a - 5 37, kx,
b - 4,956 kx, o - 3.12 kx. The comparison of the above values with the ~exagcnal
9
~_Card 1/2 -

L 18166-63
ACCESSION "s AP3004358
values led to the conclusion that its composition can be described with the
formula lrbC~0-4. The spectral composition of Nb2C and NbQ-0.4 is practically
the same. Apparently this shift of the hexagonal structure tilkes place with the
addition of oxygen and nitrogen. Oxygen alone does not effect this shift. An
analogous phaue is formed on the basis of lower carbide V2
C having a structure
similar to Nb2C. Orig. arts hact no graphics.
ASSOCIATIONt none
S0Y,,=2SDs 26Feb63
SUB CCDEs CH
DATE ACqs 23Aug63
M REP SM 002
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S/126/63/015/001/007/029
Elll/E183
AUTHORS: Gel'4, P.V'# and Krentsis, R.F.
TITLEi Some thermo-physical characteristics of iron silicides
PLI110DICAL: Fizika metallov i metallovedeniye, V-15, no-1, 1963,
63-71
TEXT- Previously obtained data on the specific heats and
entropies of Fe Sil Fe Si , FeSi, FeS and FeS at 55-1925 *K
3* 5 3 '2 '2-33
are used to calculate the characteristic temperatures and
entropies of melting of these compounds. A comparative analysis of
these properties In relation to the composition and structure of
tfie compounds in presented, and certain specific features of the
melting process and short-range order in liquid iron silicides are
discussed. An iron monosilicide crystal can be considered as made
up of FeSi groups, with both metallic and covalent bonds, and this
is reflected in the temperature dependence of the specific heat of
FeSit with falling temperature gradual refreezingte must occur of
atomic vibrations In these quasi-molecular groups and they begin to
oscillate as closed units. Both thermal and electrical properties
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Some thermo-physical ... S/126/63/015/001/007/029
E111/E183
of the higher silicides of iron confirm that here inter-atomic
bonding is unequal and conditions for producing lattice vibrations
are different. Both heats and entropies of fusion show
considerable deviations between observed values and those
calculated by some of the usual methods. The experimental data
indicate that on-melting iron silicides not only in the long-range
order destroyed, but a substantial change occurs in the nature of
the interaction between particles, character of structural units
nd degree of short-range order. This applies particularly to
;
e3s' in which some of the metallic bonds change to covalent on
fusion; an a result, stable, quasi-molecular FeSi groups aro
formed. Fusion of a-lebeauite is similar, but in the case of mono-
silicide it consists merely In a certain structural disordering of
the system. The authors emphasise that the evaluation of the
extent of disordering during fusion solely by analysis of the
relative deviation of the latent-heat values from the additivity
law is adequate only when no 'substantial change in the nature, of
particle interaction occurs*
There are 3 figures and I table.
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Some thermo-physical ...
1.
S/126/63/015/001/007/029
EI11/E183
ASSOCIATIONs UralOskiy politekhnicheakiy institut im. S.M. Kirov&
(Ural Polytechnical Institute imeni S.M. Kirov)
SUBMITTED: June 14l 1962
i
I
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I/
4

SETOLITS, A.K.; MLID, P-V-; '-'AGiiYAZIISYIY, V.L.
Region 04 f honogonous structure and certain properties of tba phase
in tha system Fe - Ge. Fiz. met. i- motalloved. 16 no.1:130-112- J1163.
C,URA 16:9)
1. Urallukiy politokhnichaakiy inatitut imeni VArova.
J,jron-germwim alloys-Me tall ocraphy)

SHTOLITS, A.K.; GELID,_L.~!; ZAGRYAZHSKIY, V.L.
Certain electric and magnetic properties of the 0- phase of
the system Fe - Ge. Fiz. met. i metalloved. 16 no.2:198-204
Ag 163. OURA 1W)
1. Urallskly politekhnicheskiy institut im. S.M. Kirova
(Iron- ermanium alloys--Electric ?ropertien)
~Phase rule and equilibrium)

GELIDt P.V.; GQLITSOVt V.A.j SHTEYNBM, M.M.
Effect of intraphase hardening on hydrol;en absorption in man-
ganese austenite. Fiz. met. i metL-11oved. 16 no.3:394-402 S 16-3.
(NIRA 16:11 )
1. Urallskiy politekluiicheakiy institut imeni Kirov&.

TSKHLT, V.A., GELID, P.V.
Shielding of lie-I* bonds in -qu1LiLtoi-,L1c Lransition metal oxides
and carbides with a IM01 structure. Fiz. met. i meta-Ilovv-d. 16
no.3:493-494 3 '63. 11 j -
Homogeneity conceattation areas of tbi;tl and V group transition
met".1s with n ','aCl struc-urn. 49 5-~/+-~ 6 (MBA 16:9)
1. Institut k1iimii Ural'skogo filiala Akademii nauk. SSSR.

GELID, F.V.; GOLITSOVO V.A.j RYABOV, R.A.; SHISYNBERG, M.M.
Interaction of the parameters of hydrogen absorption by
precipitation-hardened austenite. F13. met. i metalloved. 16
no.4:610-611 0 163. (MIRA l6tl2)
1. Urallskiy politekhnicheskiy institut imeni. Kirova.

BAUM, B.A.; GELID, P.V.; SUCHILINIKOV, S.I.
Electric conductivity of liquid chromium silicides. Fiz. met. i metalloved.
16 no.6s939-941 1 163. (KRA 17:2)
1. Ural'skiy polltekhnichenkiy institut imeni Kirova.

YESIN, O.A.; GELID, P.V.; POPELI, S.I.; NIKITIN, Yu.P.
Review of "Physical chemistry" by A.A. Zhukhovitskii and
L.A. Shvartsman. Zhur. fiz. khim. 37 no.6:1435-1436 Je 163.
(MIRA 16:7)
1. Ural'skiy politekhnicheakiy institut imeni S.M. Kirova.
(Zhukhovitskii,, A.A.) (Shvartsman, L.A.)
(Chemistryp Physical and theoretical)

KALISHEVICIL G. 1. - GEL,lDp, PoVe ; PlEirrsis. R.P.
Heat. (.apacity., enthalpy, and entropy of cobalt monosilicide.
Toplofiz. vys. tomp. 2 rio.1~16-20 Ja4 104. (MIRA 170)
1. Ural'sk"y poll tekluiiehesk-y institui..

AC== M: AM29337 3/0149/64/000/002/0146/0151
AU=ORs Xelowim, &' P.; Sidereshoo F. A.; i~j-% ~?-V-
YTPF-"s 61-metwal cberacteristics of the'd-phame of the Co-Si System
I
SOUMM TM. Mmotmaye wistallurgiyo, no. 2. 1964. 1"-351
70FIC TAGS: cobalt, sillcoup 4-phase, silicide, mistallographic investigation, x-
ray inventigatiam, dowitametric Investigation,
A3S7R=: In this paper the authors studied the concentration limits of stability
of single-phase wonomilicide and the character of filling its crystalline lattice
vith component atom. Mcrophotographs of Co-Si alloys vith various silicon contents
-are presented. 7be awthore found that by metallographic, x-ray, and densitometric
methods, the vidth of the homogeneity region of 4-phase of the Co-SL system at SDO-
11000 (31.40-32.0% 31) and at 12000 (30.96-33.06 31) Is sore accurately defined. It
is sham that wbw a > ncov cobalt monosilicide, it is a solid solution of sub-
traction in the Ian sublattice. The maximmme defectiveness for an alloy saturated
with silicas at 11001 COWASS 2%. When % < substitution of silicon atom
by cobalt ateme occurs wkLch to ecompaniel byNtanswation of the ~11 amount of
defects In the allicee oublattice. Equistomic cobalt wasoollicide to charecterLsed
Cmd 1/1