SCIENTIFIC ABSTRACT LIBEL, A. N. - LICHINITSER, M. R.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R002201810010-6
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 19, 2001
• Sequence Number: 10
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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-7-77,
2/2 025 UNCLASSIFIED PROCESSING DATE--160CT70
-CIRC ACCESSION NO--AP0116381
..ABSTRACT/EXTRACT--(U) GP-0- ABSTRACT. DISCUSSION OF THE PROBLEM OF THE
STRESSED STATE INDUCED AN INFINITE PLATE WITH A CIRCULAR HOLE BY A
DISCONTINUITY OF THE DISPLACEMENT VECTOR OEREVATIVE OVER ONE DIAMETER,
AN INTEGRAL EQUATION FOR DETEKMINING.THE DISPLACEMENT DISCONTINUITY IS
DERIVEDt AND AN APPROXIMATE SOLUTION OF~THIS EQlfATIUN IS OBTAINED FOR A
DJSCCNTINUITY IN THE FORM OF TWO IDENTICAL CRACKIS EXTENDING FROM THE
HOLE. FACILITY: AKADEMIIA N4UK UKRAINSKOI SSR, FILIKO
HEKHANICHESKII INSTITUTt LVOVt UKRAINIAN'SSR.
14
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BUISME-R-11-up"II&
Mmu-

USSR TJDC C-61. !83 -123
PAPUKOVA, K. P. 3 IMI-MTSOVAP 11. N., and A. ff.~
"Synthesis of Phenox-yalkylphosphunic Acidn and Ion Exchange Resins Derived from
Them"
Leningrad, Zhurnal Prik-ladnoy Rhimii, Vol 45, No 8, Atie-, 72, 1:,p 18CO-1,813
Abstract: PlienoxyaLkylphosplionic acids with the &~ne~rnl formLila CS 5 (C 2 n
oil 0 it 11
PO3H2 were synthesized, where n = 1,2,3 ana 6 * 'Tile pi.~oditcts- are dibasic acids;
they are colorless ci-jstalline compaund6, soluble in OVian:):L, divethylfonprlde
and vith heating, in nitromathane, writer, dichloro=ethane, and acetone.: they
are insolub-le in acetone. Their melting points mr-1 acid stven~,-ths ".'eC1,2asa wit-h
increaEin,, len-th of the a.Uryl cluxin. PolycordensatloVi of Viese acid::, vith
formaline in presence of Ml leads to the proauction or lon exchannu resins cor-
tainilne phosphonic ocid groups in the aliphWtic side a4r--Jn4,i of len.-,tia.
The exchang V
le capacity ranged from 8.9 to. 6.6 ~'Kie Itinetic properties of
these resins were inverseLy proportior4al to the luu---th~of a7liphatic chairz con-
taining the phosphine group.

NORM
MM., rm. 1. U-494 WRIWA.'"A.
"IffmrmaL Self-Yacusing of Uase~Radiatlbrr tu- Single &Ikaliae-Halide -Crystals"
II* ri F g ad,. Fizika: Tverdoga, TaTa, Vol: X& 2.,-. February 19 71, pp, 656-658
-rlmental. procedure amd- results of measuring the value of
A&at=ac:tz The expe
CcTa/`cM),(y (the increase in index of reftaction.with ao increase in temperature)
Im a wide temperature range- for a. m1mber- of.: single alkaline-halide crystals
am presented in. thia paper., These:measurnments are i;compared with the car-
r=Voading- values of A, with. the, self4o.cusing condition assumed to have the
d~y (d,,)0.
+- A- 0: (1)
dZ dT
sham dtr/d3! is the resultant: value; of tbez-. derivative -of the Index of re-,
fWantiom Wirb- respect ta (dii/dT)() is the: ~ derivative,. of the
af refrazttom with respecr- t= tampprature.,measultled -under: equilibrium
e=fftf nns, and
U,[L bl'(L' v) I ("an"OT

WOR
BOYM, Yu. I-, aact Flzi"1. Tverdogo ~Tela, Vol ~ 13, No 2,
Feibrrxiaxy
1973,
(a is the coefficient of thermal expansion, p is the density of the medium,
v is the PoIsson coefficient). Conditions-are discovered under which re-
TnHon (1) is satisfied.- that is, the- occurrence of; the thermal self-focus-
lug effect- is possible. Data are. presented.for KC1, NaCl, and KBr crystals,
and am equation is derived which charactexlzes the efficiency of occurrence
afthe self-focusing effect. It ia podnted out th.1t, explanation of the be-
haviar of (dn/dT)o as a function of. temperature requIres consideration -not
only of the thermal expansion bur:a1so:the,variatiom,witb temperature of the
=1 a polarizability.
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p
USSR
and LIBENSON G. A.
KIPARISOV S. S.
Poroshkovaya Yztallurgiya (Powder Metallurgy), Izdatpel'stvo Yetallurgiya
moscov, 1972, 527 pp
Translation of Annotation: Powder metallurgy is the,branch of industry which
produces metal items frow. compressed or molded powders by sintering without
melting (or partial melting of the high melting component of the powder
mixture).
According to the figurative statement of one of the outstanding Soviet
metalloceramicists M. Yu. Bal'shin, powder metallurey is as old as Egyptian
pyramids and at the sane time it is as contemporai-y ar, jet planes. In fact,
Indiana mde iron columns by the metalloceramic: methba seTe:tml centuries BC,,
although they did not know how to produce.either cast iron or steel. Several
centuries later powder metallurgy was again in use, then it was abandoned
again.
Contemporar-t powder metallurgy originated durij:kl; the first quarter of
the l9th century (1826) when P. G. Sobolevskiy develned the. production
method of coins from platinum powder on instruction of the Russian mint (1].
1/17

USSR
KEPARISOV, S. S., and LIBEPMON, G. A.) Izdatel'stvo ~Latallurgiya, 1972, 527 PP
Basic directions in the development, of powder-ir4tallurgy are related to
solutions of many difficulties encountered in the casting of high-mr1ting
metals (tungsten, molybdenum, tantalum), as well asto-ponsibilities of pro-
ducing materials and items with specific.properties by the metalloceramic
method, which could not be produced by any other industrial methods (for
example) production of castings with successive machining). Production of
pseudoalloys (W + Cu, W + Ag), hard carbide alloys, porous bearings, filters,
and others requires the use of metalloceramic meVaod;s.
New types of items (for example, automobile parts, shaped castings,
guages., and others) can be produced by powder metallurgy methods from co=on
materials but with specific properties and at low cost compared with casting,
which requires further machining. In particular, tbe povder metallurgy method
rakes it possible to decrease the consumption of mat~lrials needied for the pro-
duction of certain items.
Finally, the production of metallic powders I!ar direct une in paints,
pyrotechnics, explosives, catalysts, cementing mixtu~-_s in the hydrowtallurg
OY
of nonferrous metals, welding induBtry., and others ii; also an important branch
of powder metallurgy.
2/17

The directives of the 23d Congress of the CPSU state the need "to secure
and facilitate a further development of powder metallurgy and to introduce
metalloceramic products into the machine-building and other Industries."
Powder metallurgy has been developing rapidly,not only in the Soviet
Union and other socialist countries, but also in sut~h capItalistic countries
an the U.S.Y England, Austria, the FRG, and Japan. Ifith the increase of prod-
ucts produced by powder metallurgy methods, there is e growing demand for
specialists in this branch of industry*
Powder metallurgy methods have been used videly in all branches of
science and industry and it is impossible to list all places of their appli-
cation.
It is impossible to name any single branch of industry where some items
and materials produced by powder industry methods are not used. Hard cutting
tools are used in the machining Industry, hard alloys w1 diamondmetal compo-
sitions are used in the mining and petroleum itidust3iias, find metal powder
additives and ferroalloys (modificators) are used in the metallurgical indus-
try for preciaion rolling and drawing. In the weldIng induatry the powders
are used for built-up welding and for~preparation ofthe velding pastes. In
3/17

USSR
MARISOVS S. S., and LIBENSON, G. A.j Izdatel'stvo b5etallurgiya, 19T2, 527 pp
machine-building, the instrument industry, the aut anobile industry, and avia-
tion, powder metallurgy methods are used for the production of different wear-
resistant machine parts and mechanisms, as well as parts with high antifriction
and friction properties.
- It is difficult to name any single instrument or a device in tile con-
temporary electrical industry where some,of the metmllocaramic items are not
used. Mis concerns high precision electronic instrumenta as well as bulky
equipment at power stations and that of industrial ovens.
Metalloceramic products are also used in the I'ood and textile industries,
for building of sewing and washing machines, tape recorders, electric shavers,
house locks, and others.
The technological production of items by powder metallUri,7y methods con-
eists of the following operations: Preparation of the metallic powder or a
mixture of powders ->- pressing of powders (molding)-4- sintering (heat treat-
ment)-4- finishing treatment (final heat~treatment, calibration, annealing,
heat treatment).
Some deviations from thrge steps are frequently encountered in industrial
and experimental works. Thus, for example, the pressing and sintering processes
4/17

USSR
)UPARISOV,, S. S., and LIBENSON, G. A., Izdatel'stva Metallurgiya, 1972, 527 PP
can be combined into one operation, and the prialimiaary sintered porous bri-
quets can be impregnated with molten metal. Some other deviations can be
found. However, the use of powders and sintering them at temperatures belov
the melting temperature of the basic element always~remaitns unchanE;ea-
As was mentioned before, the u-nin advantage of metalloceramic production
methods is a considerable decrease of the material losses during the entire
production process up to the finished product.
Losseu during the production of machine parts and devices by casting
process followed by machining reachesi6o% and sometimes higher compared with
only 7-10% in the case of the powder metaUurgy methods.
The number of technological operations amounts to tuo-three at one
plant during production of items from:metaUic powders, even if items are of
complex shape and configuration. At the same time there is no need to have
machine shops and skilled operators because the maeMning is excluded.
On the other hand, production of identical items from castings reT~iircs
ten or more industrial operations carried out at different shops and depart-
ments which require skilled labor. However, it can be said that there are
some difficulties in powder metallurgy vhieh 14mit to sorit t-uxtent the areas
of applicability of metallocez ic methods.
5717-

USSR
KIPARISOV, S. S., and LIBENSON, G. A., Izdatel'stvo bsetallurgiya.. 1972, 527 PP
First of all can be mentioned the high price for powders and pressing
equipment. 7he economy of the metalloceramic industry in this case Is moti-
vated by the industrial scale (if production of many thounands of items is
required). This is justified in the case of machine parto produced from the
iron powder. In many other cases the'unique properties of the miatallocerumic
items secure the economical advantages of powder wtallur;gy methods even if
the scale of production is much smIler. I
Nevertheless, one of the most important problems of p:)wder rnetallurgzr
is the develor.-*nt of production methods which would:uecui-_ the production
of high-quality inexpensive metUalic powder8, first ol' all. iron powder. One
of the most difficult problems for irataUurgists, rtat~Mne. builders arA users
is the elimi tion. of defects in metals during its:solidification, that is,
the phenomenon related to the crystallization proceelas.
The crystallization process determines basically tho characteristics
of the metal structure, including the development of,defects which show up
when the produced part is used during t1mi4achine as;Oembly or during Its
performance. In the case of the powder metaUur&xr m4thods the crystallization
stage is absent, and as a result there-are lesser number of defects related to
Crystall-ization.
b/17
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UDC 621.162
Z= = C-=XTZG9& -Of ;STTUG -TITAH!iM W1,50WHM B0ktbt5 hY 1=:t_CxMjr nt-.a.Z4
(Article by 1. S. Xiparisov,1g., K. Kur'uLnn ensort Moscow Steel
end AJIA7S T~ _- 1 .26 mve ff~Twx_JV
zaiar 09 Rar'41, RJ.FT1~" *"A ~Fvvdvr Metal-
j_W'5U -N-te
Ras". RO-11 -~Ittxd' IQ X-bruaw XV71, Pr N-35,1
In con action with the Uvelopmeat of aw branch&& of engineering, a
A.-A his arnisom-for sk4ttrials.havinc,hirh-~mwcrzture _s,~Lhj high -h"z-
maistazza, high hardness, strength. went resistance. and to on. These ma-
tcrials 1ccludit raftoctory =telling compautans, imcludir4 borLdas the Imanufac-
t-Ars of products from which by canting, potbo" is, aL. result of
I" -_ - ' -_ -
7:" It hIgh~ftaItin8'p-_4Vzst and In a avatter Ot cam" *12 Imposetble, to a reault
Of- the t4od"ey of many refractory 'cumitoix:tdi an melting.
_-Acca diaggly, the mathods of pow4dar metallurgy h&Ift become, widespread for the
manufacture -of products from refractory - -
When creating heat-resistant materials, a quentity of ;wtollic hinder
Is added to the boridas which increatens. Cho ductility 4*4 beet-ttelatance of
Chet compositions. It is "pediant to use metals of tha I-roo. group as the
1:int!ur. harq�~ the brIttleades at eke etfractamy compcn~raz (the boridit) is re-
.due". azl aa creop. strength of the owt&l cement is increased without signifl-
cant embrIttlemant. The addition of macallic camont is 1= this ease uselul
also because it permits intensification of the sinterip.; procoats an a result
of the liquid phase tomed which accerlarates, the difiusAcat procoasas and p4na-
tratids Into the pores And spaces between the particles. At tLa *&me tisat a
great deal of vGlumatrLc shrink*&* I* losurtc! along with obtatuiu4 high 4on-
qVkZj sity and lvw residual parcrity and also significant r*JuCtLoo tit tits sinterLng
teuNrature of the materials connected with cbe formation, of low~welting
suc6ctLco.
T1%4 investigation of the conditions ot pittformir4 the dintarLog prucmss
M the formation of a liquid phase shows that for py4vestion or Its sweating
the marginal vetting angle must be less than 90 degrees. A thin time. data
We" 'been gathered on tits vactability of refractory conapounds by liquid natal
However, for a number of borides of mtractarjottalo. which are acquir-
tn ing greater and significant* in modern engineering. the marginal wetting angle*
z

PROCE45SING, !)AT[---_'&l0V70
044 UNCLASSIFIED
TITLFl--NATUi