"SCIENTIFIC ABSTRACT LVOV, N.S. - LVOV, S..M."

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001031010011-3
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Sequence Number: 11
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

- - L I VOV, ..N. S tp i nz h.
*utomatic welding of joints with an arbitrarjr position setting.
[Trudy] WTU no.g":150-167 '59. (MIRA 13:5)
(Electric' welding)

L.'V&v, 1"I" --j.
LIVOV, N.S.
U."?j.Zhukovskii Student Scientific And Technological Society at
the Moscow Technical College. Trudy M,-, 0 MVTU no-3:3-6 157.
(M12A 10:9)
(Moscow-Technical education)

-LIVGV, Nikolay Stepanovich: ZYUZMNKOV, I.P.. red.: SAVCHMMO, Ya.V..
(Electric eye; photoelectronic automtic control] Blaktricbeakii
glaz; fotoelektronnsia avtomatika. Moskva, Izd-vo nZaania,"
196o. 55 p. ()CERA 14-.1)
(Photoelectric calls) (Autom tic control)

~'300
27817
S/549/61/000/101/015/015
1)256/1)304
AUTHORS: Llvovp N.S.9 and Igoshint A.P., Engineers
TITIE: Welding apparatus for automatic electric-are welding
of curvilinear butt joints
PERIODICAL: Vyssheye tekhnicheskoye uchilishche. Trudy. Svarka
tsvetnykh 8plavov, redkikh met'allov i plastmassp
no. 101, 1961p 241 - 252
TEXT: After a long preliminary discussion of the need for such an
apparatus, alternative methods of automatic control desirable fea-
tures, earlier developments etc., the apparatus in question is des-
cribed. Its working principles are shown in Fig. 1. The photo-ele-
ment 5 monitors the position of the light spot from the source 4
relative to the edge of the line. If the latter departs from the
spot an out-et-balance signal is fed from the photoelement into an
amplifier 10. The regulating reaction forces the motor 6 to turn
one way or the other the les.4, screw 8p and thus to move the photo-
electric head and with it the welding gun nozzle 9 in the direc-
Card 1/6

27817
S154 61/000/101/015/015
Welding apparatus for automatic ... D256YD304
tion, in which the edge of the copying line has departed until the
spot becomes accurately positioned over the edge. Since the nozzle
is rigidly connected with the photoelectric cell, and the distance
between them is the same as that between the probe and the pen in
the tracer, then, consequenily, as the machine moves, the photo-
electric device follows the edge of the copying line, and the weld-
ing electrode moves along the axis of the joint. A relay following
system is used in preference to one of continual motion due to sim-
plicity of construction and certain other advantages. The speed of
response is always a maximum and independent of the degree of un-
balancep oscillations in the system can be suppressed, with cer-
tain supplementary internal connections results unattainable with
other systems can be obtained. The electrical scheme of the system
is then shown and explained. The function of the photoelement is
to determine the position of the 1 mm diameter light spot relative
to the boundary of the line, drawn e.g. in black on a white back-
ground, and constituting the program of the system. Of the various
types of photoelectric device available an OA -1 (FD-1) "photodio-
de" is used since its small active element and internal lens simp
Card 2/6 V

27817
B/549/61/000/*1/015/015
Welding apparatus for automatic. D256/D304
fies the optical system requirements. Its sensitivity at 30 mA/m
200-1000 times greater than th t f ternal photoelectric de-
.,q o ex
vices. The "dark current" of the P hotodiode does not exceed 10-30
micro-A; on illumination the photodiode current is proportioned to
the incident light and practically independent of the applied vol-
tage. The spectral characteristic of the photodiode possesses a ma-
ximilm slightly to the"Mger-wave side of the maximum in the weld-
ing are rabiation, and a range of roughly 1.4 - 1.5 micron.
Photodiodes' have the important disadvantage ofbeing sensitive to
at-mospheric temperature variations and possessing considerable sca-
ttering, howeverp this rue of all types of photoelements. The
voltage in the photodi cuit is about 30 V and the load resi-
stance 0.6 M-ohm. The amplilirer is of a composite type; electronic
relay, and electromagnetic. The amplifier %Lrst and second casca-
des operate at fixed signal frequency of 64 c.p.s. - the frequency
of the light beam. Negative feedback is in the form of a narrow-
band filterp on the voltage-amplifying triode in the aeco X"d cae-
cade. Thyratron and electric-machine amplifiers are also available
for power amplification. In an industrial apparatusp preference
Card 3/6 1

27817
S/549/61/000/101/015/015
Welding apparatus for automatic D256/D304
w,*d be given to an electric-mach%le amplifier, obtaining power
d .ctly f*pm the ac mains. The electric motor controlled by the
amplifier is of the type CJI-361 (SL-361), and operated on de. with
independent excitation, with the following parameters: voltage 110
VS armature current 0-75 A, excitation current 0.1 A, power consu-
med 93.5 watt, ubeful power 50 wattq speed 3000 r.p.m. The introdio-
tion of forced oscillations into the system OW applying 50 c.p.s.
ac. to one coil of the polarized relay eliminates natural oscilla-
tions of the restoring system. Compensating this defect leads to
increased sluggishness of correction responsep but this can be re-
medied by increasing the amplification factor. A tachogenerator is
also used to provSde a correcting negative feedback. The apparatus
gives promising results in welding tests. At welding speeds up to
35 *r. and angles of deviation up to 10-140 the amplitude of wel-
ding head transverse vibrations and deviations from the oint axis
can be practically reduced to zero. At speeds up to 70 m~hr. and
angular deviations up to 30 these errors can be limited to the or-
der of 0.2-0-3 mmo The apparatus can also be used for cutting and
overlaying contours of large expanse. Other types of sensing ele-
Card 4/6 -Y

27817
S/549/61/000/101/015/015
Welding apparatus for automatic, D256/D304
ment can also be used (inductive, inductance, capacitance, ioniza-
tion etc@). When the bends were only slight the element can be
firmly installed directly on the welding head at.50-70 mm from the
electrode. There are 6 figures and 6 Soviet-bloc references.
,.Card 5/6

h0792 -
S/125/62/000/010/002/004
D040/D113
AUTHOR: LIvov, N.S.
TITLE: Automating the process of guiding a welding head along a curvi-
0
linear butt joint
P UODICAL: Avtomaticheskaya svarka; no. 10, 1962, 9-15
TEXT: The advantages and disadvantages of exis ting automatic electrode-guiding
systems are discussed and tracing system and.pickup designs are suggested. The
drawbacks include low accuracy, independable pickups and difficulties in tracing
the guide groove or line on steep curves. The MVTU im. Bamana (XVTV im. Bau-
Man) has been trying for years to deveiop universa; -stems' applicable to dif-
fcrent metals, thicknesses and curvatures. Three di-- parent- possible solutions
for welding different classes of word are outlined wid the suitable application
of various pickups is discussed. No ivstem can yet react to all possible
chanaes - changes, for example, in the gap width, edge height and shape and
electrode throat; however, some partial solutions have been found. The recom-
mended t~aciing system, which is illustrated, includes a converter-amplifier and
Card 1/2

. 3/123/62/000/010/002/004
Automating the process of guidinr . ..... D040/DI13
either a direct connection between the pickup and welding head or a correctil-l"
feedback. A tracing system built entirely of electric clements is considered
0
best (even if a hydraulic or pneLunatic main is available) and continuou.3 tracing
is preferred to relay system3. ZxistinI- Scviet equipment was designed without
thought for future automation and is therefore somewhat inadequate for tile pur-
pose. The author concludes that engineers should strive to develop self-ad-
justing systems which could extract inforstiation on the shape and size of tile
butt weld and use this data for automatically regulating the welding conditions.
There are 4 figures.
ASSOOIATION: MVTU im. Baumana (MVTU im. Bauman)
SUMaTIM; April 20, 1962
Card 2/2

111VOV$ N.S.
r------
Automatizing the direction of a welding head along a
curvilinear butt joint. Avtom.svar. 15 no.10-.9-15 0 162.
(MIRA 15:11)
1. Moskovskoye vyssheye tekhnicheskoye uchilishche
im. Baumana.
(Electric welding) (Automatic control)

At e- dig
-Airnp kAivi, P-imli'-nim
fzM-

ACCESSION NR.-' ~AP3002507' S/0135/63/cw/0061003h/101036
AUTIHtORS: Llvov, No S. (Engineer); Igoshin, A. P. (Engineer)
TITLE: Guiding system ASID-3m for welding of thin' nonmagnetic materials
SOURCE.--' Svarochnoye proizvodstvo, no. 6, 1963, 34-36
TOPIC TAGS: nonmagnetic material, welding, thin sheet'..euiding system, ASID-3m
device, automatic guider, magnetic control
ABST IRACT:. The most accurate.direction of a wolding electrode along the connection
was achieved by an indirect guiding method. The ASID-3m device *was designed by
MVTU; for this purpose. Its working principle is based on magnetic control which
depends on transmitter inductance variation related to the type of current and
frequency., magnetic permeability and specific resistivity of the metals welded,
.and thit-.kness of metal sheets. Other factors are related to the.transmitter
position with respect to welding connections and,the types of connection. . The
investigation results showed that accurate automatic 'Welding machines with welding
speeds of 80-100 m/hr can be constructed. The errq,~ in the position of theASID-
Card 1/2

ACCESSION NR.- AP3002507
3m, electrode with respect to the butt axis did.not.exdeed 0,2-0.3 mm. This device
proved to be very reliable, well balanced, and'eoil.~, adjustable to different
welding conditions. Further increase in the accuracy of this automatic guider
would.require'the design of more complicated correcting 4evices. Orig. art. has-..
4 figure.9-and,4 formulas.
IATION: MVTU im. Baumana. (AvVTfJ)
XSSOC
.~SUBMITTED: 00 DATE AC Q.- l2jul63., ENCL-- 00
8UB CODE:. ML NO REF - 80i:.' OTMR: 000
'Card 2/2

,LIVOV, N.S., kand. tekhn. nauk; AKULOV, A.I., kand. tekhn. nauk
Prospects of the autnmation of arc welding. Mekh. i avtom.
proizv. 18 no.4sl8-2O Ap'64.

Acc-km AP66~3:861 Wu-fff 2 CODk-t-lfg/041T/66/006-/012/oc)64/0064-~
111TWOM L'vov, No So
.............
ORGz none
TITLE: A device for directing an automatic welding machine along the welded joint,
Class 21, No. 182817
5YURCE: Izobrateniyap promyshlennyye obraztsy, tovarnyye zna1ci, no. 12, 1966, 64
TOPIC TAGS: welding., butt weldings automatic weldin& welding equipment) welding
-technology
ABSTRACT: This Author Certificate presents a device for directing an automatic
welding machine'along the welded joint. The device contains a gauge connected to
the joint, a gauge signal converter, a gauge-propelling mechanism, a mechanism for i
recording the trajectory of gauge travel, a counting mechanism.. a converter for the
signal of the counting mechanism, and a driving mechanism for the transverse motion
of the automatic driving machine (rde Fig..l). To simplify the device, the mechanisml
for recording the trajectory of gauge travel is made in the form of a drum
revolving with the velocity of welding. The drum is provided with movable rods
placed at -its periphery. A guide is mechanically connected to the gauge in such a
waor that during its turning it places the movable rods so that their tips form a linei
Card 1/2 UDC: 621

MO.
~-~ -4 ..
--l-

ACC NRt AP7006684 (A) SOURCE CODE: UR/0145/66/000/010/0159/01i~
!AUTHOR: L'vov,_N...'E. Candidate of technical sciences)
ORG: None
;TITLE: A combination system for automation of are welding -.ontaining elements for
I
;automat-ic adjustment of the welding cycle
!SOLRICE: IVUZ. Mashinostroyeniye, no. lo, 1966, 159-16h
i
!TOPIC TAGS: arc welding, automatic welding, welding equipment, industrial automation
110STRACT: The author describes a combination system based on the ADS-1000-2 automatic
,welding machine developed at the Moscow Technical College im. Bauman for automatically
i
;orienting the welding electrode and controlling arc conditions during the welding
!'.-1e. The system includes several servomotors and regulators for correct orientation
!of the welding electrode with respect to the joint and for producing a seam of a given,
iquality. Orientation of the electrode is accomplished by two systems, one keeping the
I
~:welding head on the joint in the horizontal direction and the other maintaining a
;given arc length. A schematic diagram of the combination system is given together
;with a detailed description of the operating principles of the main components. The
i
!article was presented for publication by Doctor of technical sciences G. A. Nikolayev,
!Professor at the Moscow Technical College im. N. E. Bauman. Orig. art. has: 2 figures.!
SUB CODE: 13/ SUBM DATE: 2Jul65/ ORIG REF: 007
J
C,,d 1/1
UDC; 6a.791.75

SOURCE CODE: uR/oooo/66/000/000/0048/0052
ACC NR, AT70073111
AUTHOR: L'Yov, N. S.
.PRG: None
:TITLE: Automating arc welding of curved seams
:SOURCE: Soveschaniye po av-tomatizatsii protsessov mashinostroyeniya. 4th, 1964.
iAv-tomatizatsiya protseasov avarki i obrabotki davleniyem (Automation of welding and
ipressure treatment processes); trudy soveshchaniya. Moscow, Izd-vo Nauka, 1966, 48-52
TOPIC TAGS: automatic welding, industrial automation, welding technology, servosystem,
seam welding
ABSTRACT: The author discusses'the problems involved in designing a tracking system
and pickup for automatically guiding a welding head along a curved seam. In the sim-
plest system (Figure 1). the tracking pickup is located di rectly in from of the weld-
ing head. The signal froTji pickup 1 is fed to converter-amplifier 2 and from there to
electric motor 3 which drIves speed reducer 4 to mo:ve welding head 5 to which the
pickup is rigidly connected. The error in the position of the electrode with respect
to the seam increases with the curvature of the seam and the distance.between pickup
and welding electrode. When the seam to be welded has considerable curvature, the
pickup may be rigidly connected to the welding head only if it is located to one side
(Figure 2). In this case, an auxiliary line L must be made parallel to the seam S.
~
Card 1/3

j_,ACC'NRt'_ A77007347
9
Fig. 1 1 2 a 9
Fig. 3
Fig. 2
MU
54'., =J, 2,
In this system the pickup follows the line which serves as a program for operation of
the tracking system. Where the curvature of the seam is great and it is impossible ori
undesirable to have an auxiliai7 line, the connection between pickup 1 and welding
head 5 (Figure 3) must not be rigid although the distance t between them should be
held constant. The control signal from the pickup is stored for the time it takes thei
welding head to pass through the distance separating the two units. The signal is
then sent from the memory unit MU to converter-amplifier 21 of the tracking system
213

-ACC NRt AT70073147
which controls the position of the welding head. Thus when the curvature of the seam
is great, the installation may be considered as made up of two tracking systems one
of which (1-2-3-4-mu) is designed for guiding the pickup along the seam and setLng up~
the program, while the other (MU-2'-3'-4'-5) is designed for guiding the ielding head.
The positional error in this case is determined by the error in recording and reading
out signals in the memory unit and by the error's in each of the tracking systems.
Copper, steel, tungsten, graphite and aluminum self-quenched gas counters were experi-
mentally studied to determine their applicability as pickups for an automatic tracking
system based on the radiosiotope method. The possibilities of photoelectric and elec-
tromagnetic methods for automation of electric arc velding are also discussed. Several
successful tracking syst~ma were developed on the basi's of each method. Orig. art.
has! 1 figure.
CODE: 13/ SM DATE: None
Ca,,d 3/3

S/05 62/000/004/001/017
3101YB186
AUTHORS: L'vov, 0. 1., Pavinskiy, P. P.
TITLE: Kinetic equation for excitons in the Cu 20 crystal
PERIODICAL: Leningrad. Universitet. Vestnik. Seriya fiziki i khimii,
no- 4, 1962, 23-28
TEXT: Equations are set up for -the dependerice of the photocurrent in Cu 2 0
on the light intensity in the region of exciton absorption under the
following conditions: (1) If the light frequency is smaller than the e~ilg0d-.
frequency of self-absorption of the crystal, current carriers are formed
from the excitons. The absorption of excitons'is assumed to be a direct
form of light absorption by Cu 0. (2) As C'u 0 possesses 1>-Vpe conductivity,
2 2
the electrons formed by dissociation of the exciton must be trapped
quickly. (3) The dark generation of holes must be considered in the
corresponding temperature i-ange. Taking account of all possible processes
with band electrons (concentration n-), holes (n +), trapped electrons (m),
acceptor centers (11), and excitons (N) participating, the following set of
Card 1/3

S/054/62/000/()04/001/017
Kinetic equation for excitons... B101/B166
equations is fcund for their concentrations: dn_/dt 61n-N + b 2n+N
+QmN - r_n_(M m) n_n + + ~N2 ; (,n+/dt = 62 n+N + .'6 n_N + I(MI - m)N
1 2
- el n_n+ ~2 _Mn ++N + a(T) ; dm/dt n_ (M - m)N + (M - m)N -Q mN
- e2 mn++ a(T); dN/dt = a - 61n_N - 62#n+N - I(M - m)N - Pi N - 0 2 -9mN
+ crn-n+. This covers the following processes: (a) generation of excitons
by light of intensity I (coefficient a), (b) dissociation of the exciton
in the acceptor center and possible trapping of electrons on the acceptor
level (coefficientt1(c) radiationless or spontaneous optical recombina-
tion of'the exciton P ); (d) collision of two excitons and dissociation
of one of them with formation of twc current carriers e- and e (1), or
recombination of one exciton (radiationlesg or optical); the total process-----
is described by coefficient - (e) recombination of the exciton with energy
transfer to an electron trap~;d by the acceptor (Sq); (f) collision of the
exciton with a free carrier e- or e-, and formation of a new pair of carriers
(coefficients 6 and 6 ) due to dissociation of the exciton; the coefficients
1 . 2
6, and 6' also involve the redombination of the exciton in a collision with
Card 2/3

.'S/-0.54/62/000/004/001/017
Kinetic equation for excitons... B101/BiB6
e- or e+; (g) recombination of the carriers e- and e+ (e,) with possible
formation of a "secondary" exciton (d); (h) recombipation of a hole with a
trapped electron (X2)' (i) trapping of an electron on acceptor levels (F-);
(k) thermal generation o-f dark holes described by the function a(T).
Discussion of the s'et of equations with respect to the three cases:
(1) photocarriers contribute very little to a steady density of the dark
carriers; (2) density of photocarriers and of dark carriers is of the same
order; (3) absence of dark conductivity at low temperatures has the
consequence that the photocurrent may be proportional to fi at low
temperatures and small light intensities, also that the dependence of the
photocurrent on the.light intensity approaches linearity when the temperature
rises. The interaction of excitonB is the principal cause of divergence from
linearity. The Engli8h-language reference is, R. Elliott,.Phys. Rev.,
108, 1384 (1957).
SUBMITTED: July 3, 1962
Card 3/3

pVOV, 0.,I, - FAVINSK37~ P.P*
Xinetic equation for mitous in CU20 OMta:Ls- Test-IM 17
no.22.-23-28 162, (MM 15:12)
(Copper oxide crystaler) (Nixeltons)

L IVOVI 0.
Saturation of absorption in an oscillatory spectrum. Dispersion
of the saturation. Vest., LGU 19 no.10,11-23 164.,
(MIRA 17*,7)

- I
i !:~~ : I -- TA -Z-~ ~. ", - - -7-
-
~ . - ~. .~ 1; , ~-- z "...

11 ~ ~rt-n-=,
, : - . - -
., I -~: ::~ . ; ; :~ -

-ACC NR: -)P70050()8 S-WRCE coDi;i-uR/oo5k/66/000/003/0141/014~
AuTHORi LYovs 0. 1.; Fridrikhq V. L.
Offis none
TITLEt On auto-ionization-type transitions involving excitons
SOURCHt laningrad, Universitet. Vestnik. Seriya fitiki i khImiis no* 39 1966t
TOPIC TAG31 exoitonp electron transitionp Inelastic scattering
ABSTRACTS The foLlowing expression is derived for the cross section of inelastic
scattering of electrons by excitonst
hill
4 3 Sri C XP[~J,
zaoq MXr1
44)i (. 0
at (% T)2 ( 007 +01's q
where no is the density of lattice points, n the X iton concentrationg and
the effective Bohr radius of the s-like func ion OJOI Alsop Ao = h-1(2mg)1/2p 9
being the mean excitation energy of the exciton and q-1 the Debya screening radius.
The expression
Wow
+
is obtained for the probability of an toTdaing transition in the "coUision" of two
Care] 1/2 UDGI ".0

1. 0. S. LIVOV.
2. USU (600)
4. Bees
7. Factors determing where the bee cluster will be formed in the fall. Pchelovodstvo
29 no. 12. 1952.
9, Monthl List Of RU551an Accessions, Library of Congress, April 1953, Uncl.
_TP,

LIVOV, 0. 5. Gand Biol Sci -- (disn) "The biology of colonies of wintering
0
bees in connection with the problem 0 asis for the necessary 4", kvlt-~-j
of wiler nests for bees." Mos, 1957. 26 pp (Mos Order of Lenin and Order
h
of Labor Red Banner Stste Univ im M. V. Lamonosov. Biol-Soil Faculty. Chair
of Zoology of Invertebrates), 150 copies (KL, 11-58, 115)
-48-

(d~/Y WPW XJP(o) BB/GG
L 10200-66
ACC NRo - Ap502S508 SC;jRCE COIE UR/0286/65/000/02)/l
0094
AUTHOR: Llvov. 0. So aid
ORG: none
TITIE: A method for performing logic operations with ferrite-diode elementas Class
42, No. 175737
SOURCE: Byulleten' izobreteniy i tovarnykh anakov, no. 20,, 1965...94
TOPIC TAGS: logic element, logic circuit, ferrite, semiconductor diode
ABSTRACT: This Author Certificate presents a method for performing logic operations
with ferrite-diode elements, The elements alre powered by alternating current. In
order to reduce the number of diodes and resistors and to increase reliability, an.*
the cores of the logic element are divided into two groups, Each group is inter-
connected by -1*ta own output winding. Output paraphase signals forbid the recording
of 01" of one or another group, depending upon the conditions for performing a
specific logic operation.
SUB COEES 09/ SUBM DATEr 2CFeb6/,
d

ZAPTS, A.S.; OKS, G.Kh.; LIVOV, P.A.---
Mechanization and automation of cold staming in omal-l-lot
production. Mashinostroitell no.1:14-16 Ja 163. (MIRA.16:2)
(Sheet-metal work-Technological innovations)
(Automation)

ZALITS, A.S.; OKSp G.Kh.,- LIVOV, P.A.
Mechanization and automatic control of sheet metal working
processes In small batch production. Kuz.-shtam.proizv. 5
no.4342-43 Ap 163. (MIRA 1634)
(Sheet metal working machinex7)
(Automatic control)

ZALITS, A.S.; OKS, G.Kh.;_~,~VOV, P.A.
Improving the design and technological documentation.
Mashinostroitell no.7:34-35 Jl 163. (MIRA 16:9)
(Machinery-Design and construction)

ZALTS, A.S. (Zallts, A.S.); OKS, G.Kh.; LVOV, P.A. [Llvov, P.A.)
Mechanization and automation of cold stamping processes in
small-scale production# Tekhnika Bulg 12 no,5:28-29 163,

ZALITS, A.S.; OKS, G.Kh.; L.'VOV, P.A.
Economical universal die block. Kuzo-shtam. proizv. 5 no.12:41-43
D '63* (MIRA 17:1)

(MMA 1895)
321 3"1 My 165.

1. LIVOV, P. PASTUKHOVAI P. VISHNIAKOVA, A.
2. ussR (6oo)
3. Lub ering
4. Seedling plots in mechanized skidding.
Lea. prom;u-No. 11 - 1952.
9. Month List of RuBsian Ac-essions, Library of Congress, February, 1953. Unclassified.

L I VOV, P. L.
--,
The most important ornamental
Glav.bot.sada no.20:?2-84 155-
trees and shrubs of makhacbkala. Bjul,
(MIRA 8:9)
1- D W stansklY 90sudarstvannYY pedagogicheskiy inatitut.
(Makhachkala-Plants, Ornamental)

L I VOV, P. L.
...... ~_ II*..k
Biology of the southern cornel (Thelycranis, australls). Blul. Glav.
bot. sada, no.29:93-95 157. (MIRA, Il.-l)
1. Dagestanekly pedagogicheskly institut im. Suleymna Stal'skogo.
(Samar Delta --]Dogwood)
4

VIKTOROV, A.F.; GIMMIRL7M. V.A.,-J~IVOTV P.L.; HIMICH, I.N.;
ILIDAROV, M.N.; KASLOVO TOOP*0, 6nd.ge-o;gra f.-.usuk. starshiy
nauchayy sotrudnik, OtT.red.; GODOTAMS. Z.I., red.;
VMITS-KATA, M.. tekhn.red.
(Daghantan A.S.S.R.; survey of physical and economical
geography] Dagestanskaia ASSR; fiziko-geografichaskii i
ekonomiko-geografichaskii obxor. Makhachkala, Dagestanskoe
uchibno-pedsgog.izd-vo. 1950. 252 p. (MIRA 12:7)
1. Institut geoCrafii Akademil rLauk SSSR (for Masloy).
(BaShestan-Geography)

L' VOY, P.L.
Ornamental trees and shrubs in Xaranogayekiy Distr ct, Dagne Zen*-
Dial.Glav.bot.eada no-35:21-22 '59, tMMA 13 :25
1. Dagestanskly goeudarstvenn~7 universitet lm.Y.I.Lenina.
(Karanogayakiy District--Plants, Ornamental)
(Trees)
(Shirubs)

4
LIVOV, P.L.
Hippomarathrum micrecarpum (M.B.) B.Fedtach., a Dew aromatic plant.
Bot. zhur. 44 no.2:197-198 F 159. (KIRA 12:6)
l.Dagestanskir gosudarstvannyy universitet im. V.I. Lenina,
14akhachkala.- (Aromatic plants) (Hippomarathrum)

L I VOV, P. L.
-1
.. Present state of the flora of the "aeolian desert" at the foot of
Daghestan. 3ot. zhur. 44 no-3:353-359 Mr 159.
(MIRL 12:7)
1.Dagestanskiy gosudarstvanny7 universitet im. V.I. Lenina,
Makhachkala.
(Kumtorkala region--Botan-r) (Sand dunes)

L IVOV, P, L.
Taxuo baccata L. in Daghostan. Bot.zhur, 44 no.6:833-83'~
Je 159.1, (MIRA 12:11)
1. DageBtanakiy gosudart3tvennyy univev;itet, Makhachkala.
(Daghostan--Yew)

,-LIVOV, P.L.
Fragments of sparee pine woodland In the and footbil:Ls of
Daghootan. Bot.zhur. 44 no-11:1633-1639 N 159.
(MIRA 13:4)
1. Dagaetunskiy gosudaretvenny7 universitat im. Y.I.Lenina,
g. Maltbachkala. -
(Daghostan-Pine)

LIVOV, P.L.
Characteristics of some forest types in the piedmont area of
Daghentan. Nauch. dokl..vys. shkoly; biol. nauki no-3:142-145
166. (MIRA 13:8)
1. Rekomendovana kafedroy botaniki Dagestanskogo gosudarstvennogo
universiteta im. V.I. Lenina.
(Daghestan--Foreat ecology)

.L I VOV, P. L.
polymerous flower of Pheli~aea coccines, koir. Bot-zhmr- 45
n0-3:414-415 Mr 160. 1 1 (MIU 13: 6)
1. Dagestanskiy gosudarstvemyy universitet im. V.I.Leninga,
,-mA4dWAIjkap-.
.. Or6o~f I'Mpef-4Abnormalities (Plants))
--j
------

L~VOV J. F~L,
Occurence of Eects-."rjaccird,= ~r- 7als (Trav,-v Z',-
-Te
delta oC the i_ Z.-a; r ~ 46 !-, 0 8 ' 1.2 1 J 7 Sl
(I'lRA 15:1)
1. Dagestanakiy 90aidarstvannr: wliversitet imoni Lenina.
g. 14akhachkala,
(Samur Valley--Nectaroscordum)

LIVOV, P.L.
- ----------
Discove of Amygdalus nana L. in Daghestan. Nauch. dokl. v7s.
ry
shkoly; biol. nauki no.2s146-150 161. (MIRA 14:5)
1. Rekomendavana kafedroy booniki Dagestanskogo gosudarstvennogo
universiteta im. V.I.Ioenina.
(DAGEESTAN."OND)

PYOVI P,L,
Oraamental trees and shrubs of the low country of Daghestan.
Mule Glav. bot. oada no.40:24-26 161, (MIRA 24:20)
1, Dagentmakiy gosudarstvennyy universitet imeni V.I. Ienina.,
-9
Makhachkala.
(Daghestan-Plants, Ornamental)

L I V OV 9 P. L.
Brief survey of forest vegetation in the Samur Delta, Daghestan
AOS.S.R. Bot. zhur- 46 no.1:102-10'7 ja 161. (,MA 24:3)
1. Dagestanskiy goeudarstvennyy universitet im. V.I.Leninaj,
Makhachkala.
(Samar Delta-Forest ecology)

* - ~-~ I- -,, -- , ..
LIVOV, P.L.
A study on the forest vegetation in the environs of Ali-Tala,
Buynaksk District, Daghestan A.S.S.R. Bot. zhar. 48 no.12-.
1822-1825 D 163. (MIRA 17:4)
1. Dagestanskiy gosudarstvannyy universitet imeni, Lenina,
Makhachkala. ,

LIVOV, P.L.; SOLOVIYEVA, P.P.
Distribution of Hedera pastuchowii Woronow in Daghestan. Hauch.
dokl. vys. shkoly; biol. nauki no.1:109-112 164. (MIRA 17-:4)
1. Rekomendovana kafedroy botaniki Dagestanskogo gosudarstvennogo
upiversiteta im. V.I.IAnina.

idmllx I,e in
j ne un r c
L r
oo-':` i 'fls bi c; :l s.
b t an 11 k E:a-is t,ur skoge gc,- s i've nnogr,

LIVOVY P.L.
Oak forentn of Daghe,'turi.
ne.4.-.140-3-1 3 165
1.
,,.oy 1)(AzinilL AlA n!,j'o
1. Rokuniendovana J~afEd
universiteta im. V.I.IRnina.

LIVOY, P.L.
Plain forests of Khasavyurt District in the Daghestan
A.S.S.R. Bot.zhur. 50 no.2:228-234 F 165.
(MIRA 18:12)
1. Dagestanskiy gosudarstvennyy universitet imeri V.I.
Lenina$ Makhachkala. Submitted March 12, 196-9.

L I VOV, P. 11%
"The preliminary restroatio,i of spruce ard its use to restore forests
on concentrated cuttims of *~rkhangellsk Oblast." Acad Sci USjR.
Inst of Forestry. Arkhangell.9k, 1956. (Dissertations for the De-
gree of Doctor in Agricultural Science)
So: Knizhnaya letopis', 11o. 16, 1956

LIV07.9 Pe N. and SMI07j, A. S.
"The Utilization of the Typology of Clearance in Practical Forest Economy."
report presented at the Conference on Foreetry., Arkbangellsk., 14-15 April 1958
(Vest. Ak Nauk SM, IV, No. 7, PP. 133-4)

LtVDV, P. K.
23193 Mekhanizatsiya obmazki elektrodov. Mekhanizatsiya etpoit-ya, 1949,
No. 7, c. 20.
SO: LETOPISI NO. 31, 1949

LIVOV, P. N.
26396 Prodleniye sroka sluzhby detaley mashin putem naplavki. Mekhanizatsiya
atroit-va, 1949, No. 8, is. 20-21.
SO: LETOFISI NO. 35, 1949

kandidat tekhnicheskikh neuk; MUSHCHOT, M. doktor
terthnicheskikh nauk, professor. retsenzent; 13MOT, A.I.. Ir-andidat
tekhnicheskikh nauk. redaktor; K07ALMINA. N.Y., tekhnicheskI7
redaktor
[Welding in resurfacing quick-w6aring parts of road machiner7l
Remont bystroiznashivatushchikhaia detalet doroshnykh mashin pri
pomoshcht neplawki. Moskva, Izd-vo dorozhno-tekhn. lit-ry, 1952.
79 p. [Microfilm] (MLRA 7:10)
(Road machiner7- Repairing)
(Welding)

USSM/ Engineering - MMallurgy
(lard, Pub. 128-7/25
Authors L'vov, P# No

Title The wear~and'the increase in resistance to~wwtr of-components for
-construction and road building machinery
Periodical Vest.,rash. 1,, 43-0., Jan 1955
Abstract t The editorial presents results of tests conducted by the All-Union
Scientific Research Institute for Road Building Machineryj to determine
the causes of wear and the increase in resistance to wear of mathine
components-made of various type steels.and'alloys. Technical data
is given on chemical composition of alloys,and metals used for the
above mentioned tests.. together with the description of build-up and
hardening processes. Illustrations; drawings; diagrams; tables*
Institution I
Submitted I

HERMAN9 Zyama Yefirovich; ANANIYEV, Garri Dmitriyevich;jj~VOVPN
kand. tekhn. naukp retsenzent; DUBASOVv A.A.9 inzh.v red.;
SOKOLOVAv T.F., tekhn. red.
-[New methods for repairing machinery) Novyi metod remonta
masbin, Moskvaq Goo, nauchno-tekbn. izd-vo mashinostroit.
lit-ryp 1961, 133 p, (MIU 140)
(Road machinery-Mintenance and repair)
(Building machinery-Maintengnee and repair)

LIVOV P.N,-,,.,.inzh.
Choosing the metals for machine pexts. Mekh. stroi. 18 no.11:18
v 161. (mm 16:7)
.(Earthmoving machinery-Maintenance and repair)
(Hard facing)
(Road ry-Maintenance and repair)

LIVOV, Petr Nikolayevich, kand. tekhn. nauk; S-11MIOVA, V.L., red. izd-
- VT - ~$
va; CHEMO , Z.1-- tekhn. red.; VLADIMIROVA, L.A~y tekhr..
red.
Near resistance of parts of construction and road machinery]
Iznosostoikost' detalei stroiteltiVkh i dorozhrqkh mashin. Vo-
skva, Mashgiz., 1962. 86 p. 0-MA 15-9)
(Construction equipment) (Road machinery)

KRABOVSK.TY, L.I.; LIVOV, P.N.; VAS1LEVICH, V,I.
Reviews and bibliography. Bot.zhur. 50 no.11:1648-1650
N 165. (KRA 19.1)
1. Arkhangellskiy lenotekhnicheskiy institut. Subrdtted May 5,
1965 (for Krasovskiy, LIvoy). 2. Botanichask5y in5titut imenA
V.L.Komarova AN SSSR, Leningrad. Submitted Pay 4, 1965 (for
Vasilevich).

RUDOY, M.; LIVOV, S.
........ 1-1--
Modernization of intake bins for corn. H*.'relev, prom,, 29 no.6:
31 Je 163. (KRA 16:7)
1. Rostovskaya itashinoispytatellnaya gruppa Roskhleboprodukt (for
Rudoy). 2. Rostovskoye upravlonlya khleboproduktol'(for Llvov).
(No subject headings)

LIVOVIV S.
- 1--- -
Shortcoming6 of the ZSM-50 and ZSM-100 separators. Muk.-
elev. prom. 29 no.7:27 Jl 163. (MIlU 17i1)
1. Rostovskoye oblastnoye upravleniye khleboproduktov.
n;
- i~i

LIVOV, S.D.
~ . - -
Primary sarcoma of the large Intestine. Zdrav. Belor. 6 no.9:70-71
S f60. (INMTIW.S-TLR40RS) (MBA 13:9)

.... I ~
I LIVOV, S. G., KALIK, 1. A., KALISTOV, N. G. and PRE0BIAZHENaP,', N. F.
"BoQkkeeping and Control in Coamunications," 2nd edition - edited by Prof.
Ya. M. Gallperin, Svyazlizdat, Moscow, 1950.
Translation- No- 4641 26 SOP 1955-

TITCHRITKO, Maksim Pavlovich- LIVOV Sergey Grigorlyevich; KAPUN, Aron
77
Izrailevich; PEROV, Vik l�ra ~oev~c -rA7,TSTOV, Hikolay
GrIgorlyevicb; TATUR, S.K., prof., doktnr nkon. nank, otv.red.;
KAZI14IIIA, R.A., red.; PURKOCH, K.G., tekhn.red.
(Accounting and analysis of the balance sheet in the conmuni-
catinns system] Bukhgalterakit uchet I analiz balansa v
khozialstva aviazi. rod red. S.K. Tatura. Moskva, Goa. izd-vo
lit-ry po voprosam qviazi i radio, 1958. 357 P. (AURA 12:1)
(Communication and traffic--Accounting)

TITCHENKO, Maksim Pavlovich; LIVOV, S.G.
(Accounting in self-supporting communications enterprises]
Bukhgalterskii uchat v kboorasohetnykh predpriiatilakh
sViazi. Moskva, Goa. izd-vo lit-ry po voprosam aviazi t
radio 1960. 95 p. (MIRA 16:~)
~Postal service-Accounting)
(Telecommunication--Accounting)

L Q533-66-
ACCE-MION NR: AP5018640 UP/0185/65/010/007/0805/0806,
q henko, If. P.
UTHOR: Vvov) So Mo4y Neme
A
MTLE: The ftrnst-Et orid carbide and
tjVgsbgufj!!n e~;~~ct in titanium, its dib ey
nitride,-1
Y I
..,SOURCE; Ukrayinallviy fizychrrjy zhurnal, Y. 10, no. 7, 1965, 805-8o6
TOPIC TAGS Nernst effects titanium2 conduction electron, electron mobility, elec-
tron scattering, phonon scattering
The Nernst-Ettingshausen coefficient is obtained for titanium and- its di-
boride, carbide, and nitride. The concentration of conduction electronsy the mobil-.
:ity, the Fermi energyy the effective mass of the electrons, and the relaxation time
are determined for M2 under the assumption of a spherical Fermi surface, a weak
magnetic field, and under the assumption that one scattering mechanism predominates
,employing a one-zone model.- The samples were rectangular in shape. A temperature
gradient of 20-30 C/cm -was maintained. The magnetic field in the gap was 12,000 Oe.
:The Hernst-Ettingsbausen voltage was measured -with a FMI-1 potentiometer with an .
electrophotooptical amplifier. The experimental results lead to -the following- val-.
ues for TiB2! concentration of conduction electrons -- 3-5 X 1021 Cm-3, mobility
A;_:4 em2/,tr-sec, r 0&56.4 Fermi energy -- 0.33 eV; effective mass -- 0.26 me, re-
C.
rd 1./2

005k~6
'ACCESSION NR: AP5oi864o
Ilaxation.time 1.8 x 10-14 see. Thus the criteria Qf strong degeneracy of current
carriers.and the weakness of the magnetic field.are well satisfied. The value of
ir ~-,0-56 is close,to r 0.5 for scattering by af.-oustic oscinations. The re-
Isults obtained for TiB2.are sensible and indicate that the initial assumptions are
jaccept&ble. "The authors express their gratitude t,3 V. S. LIvoy-for participation
'in a discussion of the obtained results." brig. a-rt., has: Vfigiire 6 formulas)
iand 1 table#
!ASSOCIATION: Khersons'lWy pedinstytut im. M. K* YYups'kayi [Dersonskiy pedagogi-
Icheskiy institutim. N. K* Krupskoyj (Kherson Pedagogical Institute),,
1SUBMETTED., 0514ar6.5 EVCL: 00 SUB CODE: SS.
ER REW S(YV: -005 OTHER., 000
rd
_2/R

NESHPORj V.S.; NERCHENKOt V.F. WimcherflcopT.P.); LIVOV9 S.N.[Sameonov,
H.Vej
.Some',electrophysical properties of titanium compounds with non-
metallic elements of the fourth gr of the periodic table.
Ukr. fiz, zhur. 5 to-5".839-842 X-D%. (MIRA 34:3)
,.2. Institut meta22okerumiki i vpetsiai~nykh splavov'Iff USSR i
'.'Mrsonskly pedagogicbdsid7 inotitut. im.- N.K. Krupskoy.
(Titanium compoimdo-Electric properties)
6

86037
"-,/0,?0/ 60/"3"/0o3/0',9 /0 3r,
Ir B01 9/B077
.211.~?VO(10311IY31 1)7.1
AUTHORS: Lfvov, S. N.., Nemchenko, V. F., and Samsonov, G, V,
TITLE: Some Principles of Electrical Properties of Bonides,
-V1 Carbides, andqitrides cf Transition Metals of .'he
IV-VI Groups of the Periodic Table
PERIODICAL: Doklady Akademii nauk SSSR, -ig6o, Vol. 1315, No. 3, PP~ 577-580
TEXT-. The authors conducted measurements of the Hall coefficient, the
thermo-emf, and the resistivity of monocarbides, nitrides, and some di-
borides of the transition metals of the IV-VI groups of the periodic
table. The results are shown in Table 1. Using these experimental results
the authors calculated the magnitude of n_u2 - n U2 which is charac-
+ i-
teristic -,f the conductivity type,. ~ 1-q po,911itive in nearly all metal Com-
positions investigated; and this is a proof of the n-type ccnductivity of
these compounds. From the increase of L durin.- the transition of metals
of the IV group to the following group the influence of th; ele-,~tron
structure of the metal on the electric properties of the compound is
Card I/~-

L10037
Some Principles of Electrical Properties of S/020/60/135/003/019/0-319
Borides, Carbides, and Nitrides of Trans~-'- B019/BO77
tion Metals of the IV-VI Groups of the
Periodic Table
studied thoroughly. This influence ii3 found to be very utrong. The authors
are convinced of the periodic change of the properties of the substances
in the metal-boride-carbide-nitride series that the influer,--e of the
electronic structure of the metalloid atoms strongly affects the prop-
erties of the phases. Legend to Table 1; 1) metalphase, 2) Hall constant,
1 23
3) in om/v2130C 2, 4) re!iiativity -In pohm,cm, 5) therino-ewf in
,uy/deg. n- and n+ are the concentrations and u-, u the mobilit2_es of the
electrons. There are I table and 18 references: 10 Sovlet, 3 Ge.-mar, and
5 US,
ASSOCIATION. Institut metallokeramik-.' i spetsiallnykh splavov Akademii
nauk SSSR (I.nstittute of Pcwder Yletallurgy ani
Academy of Scieno-es, USSR.).Khersonskiy pedago.g2cheskiy
institut im. N~ K Krupskoy (Kherson Pedagogical institute
Card 2/4

S/120/61/000/002/028/o42
E07-3/El-35
AUTHORS; L'vovj S.N., Nemchenkoj V-F.j and Marchenko, V.I.
TITLE: On a method of measuring the Hall coefficient and the
specific electric resistance of solid high melting
point compounds
PERIODICAL: Pribory i tekhnika eksperimenta, 1961,No.2, PP.159-160
A
TEXT: The electrical properties of compounds of the
transition metals of the fourth to the sixth group of the
periodic table with boron, carbon, nitrogen, etc. have been
relatively little studied. For such measurements it is difficult
to obtain suitable samples and it is also difficult to ensure the
supply of a current intensity strong enough for the experiments.
In this paper some measures are described wh1ch enable these
difficulties to be overcome. Specimens of about 14 x 2.5 x 0.6 mm
are cut by electro-~-erosion from the core of compact sintered
blanks with the highest uniformity as regards porosity and
chemical composition. The specimen must not be polished to a high
brightness, since this would cause difficulties in obtaining a
strong copper coating, which is necessary for soldering on leads.
Card 1/ #

9!415
S/12o/61/000/002/028/042
E073/EI35
On a method of measuring the Hall coefficient and the specific
electric resistance of solid high melting point compounds
Such leads cannot be soldered on directly but they can be soldered
on by using a thin intermediate coating of-Motall for instance
copper, at the ends. Such a coating can be deposited
electrolytically in a bath of the following composition:
water 100 g, CuSo4 20 g, H2SO4 5 9, ethyl alcoho-1 0.2-S. The
obtained copper layer will adhere quite strongly and will be
suitable for applying low melting point solders, for instance Wood
alloy. The reliability of such contacts was verified on a number
of carbides, nitrides, borides and silicides of high melting
point metals. Current of a density of up to 300 to 350 A/cm2 c&n
be passed through the specimen with a stabillty of the order of
the third to fourth decimal place: this is 10 to 15 times as high
as the densities obtained by J.M. Bardeen and B.S.Chandrasekhar
(J. Appl. Phys., 1958, 28, 1372). As a result,, 'even in materials
with low Hall coefficients (ev 0.5 x io-4 cm3/coulomb), the scatter
in the measured voltages will not exceed I to 2% in the case of a
potentiometric set-up with a sensitivity of lo-7 V/scale divislon.
Card 2/ 5

S/120/61/000/002/028/o42
On a method of measuring th Hall...9073/EI35
cro:a-section
In specimens of 1.5 MM2
applied by the authors, this
current density is obtained*for a current intensity of 4 to 5 At
which simplifies the current supply to the test set-up. The Hall
measurements on solid high melting point compounds can be carried
out by the usual method with electromagnets ensuring a field of
12 to 15 k0ersted. For convenient measurement, the specimen is
placed into a gap of the electromagnet in a special holder,
designed to also permit measuring the specific electric resistance
of the specimen. it consists of a 2 mm thick pertinax plate I
(see figure) with an opening 2 of 6 x 6 mm2 in the centre, on the
sides of which are two grooves 3. In these the current leads 5
are held by pressure from two thin brass plates 4. Due to the
mobility of the current leads, it in easy to adjust the centre of
the specimen to be opposite the metering probes. Into six slots,
which are perpendicular to the axis of the holder, thin copper
tubes are glued in, in which molybdenum probes 6 (0.8 mm dia.)
can move easily but tightly. The middle ones serve for measuring
the Hall voltage, the end ones serve for measuring the voltage drop
when measuring the specific resistance. The probes are pressed on
by means of two screws 7 which carry perspex discs at the ends.
Card 3/ 5

On a method of measuring the Hall
S/12o/61/000/002/028/o42
E073/E135
Rubber washers 9 are glued on to the faces of the discs so as to
produce a tight and uniform pressure on the probes. The holder is
connected in the circuit by means of seven pins 11 which are
glued into appropriate recesses and are pressed down with the
plate 10; these pins are fitted into a block with sockets
("recesses") and fixed to one of the poles of the electromagnet.
The second current lead is connected to a separate terminal 12.
The holder is convenient and reliable in operation and,
particularly, it permits measurement inside a very narrow inter-
pole space (3 mm). As a result, a relatively high magnetic
potential and a uniform magnetic field can be obtained with
relatively small magnets.
There are I figure and 3 referencesi 2 Soviet and 1 non-Soviet.
[Abstractor's Note: This is a slightly abridged translation.]
ASSOCIATIONs Khersonskiy pedagogicheskiy institut
(Kherson Pedagogic Institute)
SUBMITTED: February 16, 196o
Card 4/5

S/126/61/011/001/014/oig
E032/E314
AUTHORS: L'vov, S.N., Nemchenko, V.F., Kosolapova, T.Ya
d1VCr1-5i~idS6n-ov, G.V.
TITLE: on the Electrical Properties of Chromium Carbides
PERIODICAL: Fizika metallov i metallovedeniye, 1961,
Vol. 11, No. 1, PP. 143 - 145
TEXT: The present authors have measured the resistivity
the Hall coefficient R at room tempevature, the thermo-lectric
pow e'r ' CT and the temperature coefficient of resistance
a(, for Cr C Cr C and Cr C The results obtained are
23 61 7 3 3 2-
given in the following table.
Card 1/4

S/l26/6l/O11/ooi/ol4/olq
E032/E314
On the Electrical Properties of Chromium Carbides
Phase Car- (> R. 10 4 'ILV 15 2 2
bon vta- cm CM3 / - aC', 10. b=n-u--n +1 u+
conc- /Cal el~deg - 1 2 2
entr- deg cm1V sec
ation,
Cr 0 18.9 +3.63 +2.5 -63.6
Cr 23C6 5-33 127+2 +1.2+0.2 +2.76+o.o2 +1.72+0.11 -4.6
Cr 7C3 9.00 109i4 -0.38+0.o3 -7.1+.0.3 +1.o6+o.05 +0.20
Cr 3C2 13.33 75�5 -0-47;tO.03 -6.7+,0.5 +2.33+0.04 +0.52
The Cr 3C2 and Cr 7C 3 powders were prepared by the method
described by Kosolapova and Samsonov in Ref. 1 and 2.
Card 2/4

S/126/61/011/ool/ol4/oig
E032/E314
On the Electrical Properties of Chromium Carbides
The Hall coefficient was measured using direct current in a
magnetic field of 12 500 Oe and the resistivity was measured
potentiometrically. The thermo-electric coefficient was
determined relative to commercial copper and then converted
to lead (20-100 0C) and the temperature coefficient of
resistance was determined in the temperature range 0-100 OC.
The effect of the porosity of the specimens on R and (3
was determined by graphical extrapolation from experimental
data for Cr7C3 and Cr3C2. while for Cr23C6 the formulae given
by Juoretscke and Steinitz (Ref. 3) were used. The quantities
CT and a were found to be independent of the porosity.
There are ~ table and 7 references: 5 Soviet and 2 non-Soviet.
Card 3/4

S/126/61/011/001/ol4/019
E032/E314
On the Electrical Properties of Chromium Carbides
ASSOCIATIONS: Institut metallokeramiki i spetsiallnykh splavov
AN UkrSSR (Institute of Metal Ceramics and
Special Alloys of the AS Ukrainian SSR)
Khersonskiy pedagogicheskiy institut im.
N.K. Krupskoy (Kherson Pedagog~cal
Institute im. N.K. Krupskaya)
SUBMITTED: June 27, 1960
Card 4/4

5/1 26/61/012/004/021/021
E073/E535
AUTHORS. Verkhoglyadova, T.S., Llvov,, S.N., Nemchenko, V.F.
and Samsonov, G.V.
TITLE: Electric anti galvanomagnetic properties of chromium
nitrides
PERIODICAL: Fizika metallov i metallovedeniye, v.12, 'no.11, 19ft,
622-624
TEXT; In the system chromium-nitrogen two stable nitride
phases are known - Cr 2N and CrN. According to one of the authors
(Ref.l: Samsonov G.V. Zhurnal strukturnoy khimii, 196o, 1, 447)
these are characterized by a combination of metallic and ionic
bonds, whereby the latter predominate to some extent. This in
due to the high ionization potential of the nitrogen atom and the
low acceptor ability of the incomplete d-shell of the chromium
atom. This assumption on the nature of the chemical bond in
nitride phases of chromium is confirmed by the results of X-ray
structural investigations, according to which the chemical bond in
the highev nitride Cr.N approaches the type of bond of the
chromium.oxide Cr 20 3*2 In this paper the electric and galvano-
Card

-,;I 1 `0
Electric and galvanomagnetic ... S, -126/61/012,/004/021/021
E073/E535
magnetic properties of chromium nitrides are studied. The compact
specimens were produced by sintering briquettes with a porosity of
20-25% pressed from powder of electrolytic chromium. The sinter-
ing was at 9900C (for alloys with a cor~position approaching CrN)
to 1300% (for alloys approaching the composition of Cr N) for
durations of 3 to 4 hours in nitrogen which was carefulfy purified
from oxygen. The porosity of the specimens varied between 0 and
5%. This method of preparing specimens enabled avoiding changes
in their phase state and the formation of carbonitride phases
which are unavoidable in hot pressing of preliminarily manufactured
chromium nitride powders. From thus produced specimens the
specific electric resistance 0 and the absolute coefficient of
therino e.m.f. a Tv the Hall coefficient H and the thermal
conductivity x were determined. The results are entered in a
table, which also contains data from the literature for pure
chromium as published'by A. Ye Vol Otef.lft Stroyeniye i svoystva
d,;oy'nykh metallicheskikh sistem~ v.1, Fizmatgiz, M., 1959) and
S. Foner (Ref. 5: Phys. Rev. , 1957, 107, 1513). It was found that
in contrast to most of the intermediate phases (including chromium
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Electric and galvanomagnetic ... S/126/6l./ol.2/004/021/021
E073/035
carbides), the resistance of chromium nitrides increases from the
lower nitrides to the higher ones. Similarly, the Hall
coefficient ana the thermo e.m.f. coefficient increase with
increasing nitrtlgen content. On the other hand, the thermal
conductivity of the higher chromium nitrides is lower- than of the
lower chromium niti~dps. This behaviour can be qualitatively
explained on the basiL of the electron structure of chromium
proposed by Ye. S. Port,vik and V. T. Volotskaya Wef-7.' ZhETF,
1999, 36, 165o) who assamed that the electric conductivity of Cr
is basically due to highly mobile holes and electrons ih.the
overlapping , Its- and 4p-bands. With some degree of appruximation
tii,i-s vis.&LAub utilizing the known expressions of the Hall coefficient
and the electric conductivity for the case of two tpes of
carriers and to determine the numerator (n u2 - n u 6 of the
Hall coefficient. The appropriate values are given in the table.
The chromium nitride CrN can be classified as an electron semi-
conductor, the tine of which is promising as a negative branch of
high temperature thermocouples (particularly for operation inside
nitrogen) and also for producing thermoelectric transducers of heat
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into electricity with an efficiency of up to 18-20% if paired for
instance with MnSi. There are I table and 8 references:
7 Soviet-bloc and I non-Soviet-bloc. The English-language
reference is quoted in the text.
ASSOCIATIONS: Institut metallokeramiki i spetsial'nykh
splavov AN UkrSSR
(Institute for Cermets and Special Alloys AS UkrSSR)
and
Khersonskiy pedagogicheskly imeni N.K.Krupskoy
(Kherson Pedagogic Institute inteni N.K.Krupskaya)
SUBMITTED., March 7, 1961
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L'vov, .uLacha."o, V.P., aaa &ueonov, G.V.
TITLL: Thv iufluencv of iion-iutal atoms on tho.electric properties of
refractory co:.pouwa of transition metals
Pi:;idQDICAL: Foroshkovaya retallurgiya, uo-4 (10), 1962, 3-10
Refractury cu"pounu~i uz* group lV-Vl traxisition metals are becoming
r.oro wiaely used in LaoueriL iiidwtry. The authors investigated the Hall effect,
electric resistivity w4 their -Lolelectric properties of the borides,earbides, and
ji.itrides of the &uove Letalu at various compo6itions*and of their mutual solid
solutior~u.. Tile electric Vrop%-rties chango regularly, probably as a result of a.
change in the electron-affiraty of t~ie d-subahells of the metal atoms and the
ionizing potwitial of the Loll--vtal luu5. There are 4 figures and 2 tables.
L;~C!&Iw. ~Iersonzkiy go3udarstvouay y pedagogicheakiy institut iw. N.K. Kmp-
skoy i In3titut wetallokar&Ald i apctaial'iiykh splavov All USA (The Kheraon
Covernment Podagogical Institute ixa. N.4. Arupakaya and the Institute of Matal
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The influence of iou-Lictal atoLau ...
Ceramics and Special Alloys, I.S Ukri~)
SU&J'Ma: Jauuary 15, 1962
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AULfOiW: Llvov. V.F., Kialyy, F.S., Varkhoglyadova, T.S.
w,u josolapova, T.Ya.
TITLk;: Uectric propertivu of boriucs, carbides, and nitriaes of chromium
P;:;iLLOJ)ICAL: Poroahkovaya L.utallurciya, no.4, 1~62,. 20-25
""T: 1111c electric pj.,op;.;rtiuj of thQ aoove co"pounas have not been
-u;..L"ic.it:iitly investigascd. In t1i.: prescrit work the electric resistivity, the Hall
ef,ccto, thu thermal amf tht~ tdiviiial coefficient of' electric resistivity ,
and th-C coeffi~ciunt of acat co;,ductivity h of all borides, and nitrides of chromium
were investigated at room temperature. The 111flu6ucc of carbon, boron, a:4
nitro en on the eluctric properties of their compounds with c o
hr aium is in good agree-
Laent with the regularities displaYed uy tho borides,carbides, and nitrides of all
iroup IV-V1 transition zetala- 'I'here are 3 figures and I table.
A.~sOCIATIWN: Xharsonskiy GosudarstvenAvy pedagogichoskiy institut im. N.Y#
Krupskoi iIiwtitut ;.ctallokeramiAi i spetsialOnykh splavov AL~ Uz;SR
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Electric properties of bori"ou,ctirbi"es ...
(The !Qierson Govtrilaient Pedagogical Institut iLa. A.k. ixupakaya, raid
tile Inutituto of r4etal CaraLLics and Special AI-Loys AS MxSSR)
SU,J~J.ITMM: January 15, 1962 1/
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S/18 62/007/003/013/015
D299YD301
AUTHORS s ~Ly2_11_�~.M_,,_~yemchenko, V.P. and Samsonov, H.V.
TITLE: Electrical properties of titanium carbide-titanium
nitride alloys
PERIODICAL: Ukrayinslkyy fizychnyy zhurnal, v. 7, no. 3, 1962,
331 - 334
TEXT: The resistivity Hall coefficient R, thermo e.m.f.
-T and the thermal coefficient of resistivity (_~o of the syst -em TiC-Till,
were measured. The study of the electrical properties of TiC-TiN alloys
~s important for ascertaining the influence (on these properties) of the
relative concentration of C and Ni atoms (found in the same type of lat-
tice) with different ionization-potential (11.24 and 14-51 ev., respect-
ively). The alloys were prepared from powder mixtures, by hot pressing.
The measurements were conducted by a method, given in the references. The
obtained results are listed in 2 tables, together with the values of the
concentrations n~ and the mobilities u calculated by the per-
ient formulas. The negative sign of the Hall coefficientsand of the
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S/18 62/007/003/013/015
Electrical properties ... D299YD301
thermo e.m.f. shows that n-type conductivity prevails in the investi-
gated alloys. Substitution of the C-atoms by Fi atoms is accompanied
by a decrease in effective carrier concentration. The resistivity
curve of the TiC_TiN alloys is non-monotonous$ reaching its maximum
at a concentration of 25 mol. % TiC (which is in agreement with theory).
The increase in resistivity with TiC concentration, can be explained
by the scattering of electrons by the carbon atoms, which can be re-
,arded as impurity centers. This is confirmed by the concentration
.;urve of-,~'. The effective carrier-mobility in TiC is higher as com-
pared to that in Til whereas the effective concentration is lower,
owing to hybridization of 4s-electrons of Ti and 2p-electrins of C.
The change in magnetic susceptibility follows that in carrier concen-
tration. The conclusion is reached that (in the alloys under consider-
ation), the principal carrier are the 4s-electrons of Ti with a small
contribution by holes of the 3d-band in TiC, and a greater contribu-
tion of holes -- in TiV; the carbon and nitrogen are mainly acceptors
of 4s-electrons. There are 2 figures, 1 table and 11 referencest 9
Soviet-bloc and 2 non-Soviet-bloc.
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3/185/62/007/003/013/015
Electrical properties D299/D301
ASSOC111TIONS: Instytut metalokeramiky i spetsiallnykh splaviv AN
URSR (Institute of Powder Metals and Special Alloys
of the AS UkrRSR), Kyyiv; Khersonslkyy pedinstytut
(Kherson Pedagogical Institute)
SUBMITTED: May 6, 1961
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