OF CARBON-CARBON COMPOSITE MATERIALS.
COMMUNICATION 2. THERMAL STABILIZATION
OF TWO-DIMENSIONALLY REINFORCED CARBON-CARBON
COMPOSITE MATERIAL OBJECT GEOMETRY
S. A. Kolesnikov,
G. E. Mostovoi,
and S. V. Vasil’chenko
Translated from Novye Ogneupory, No. 6, pp. 32 – 40, June, 2012.
Original article submitted February 25, 2012.
Billet deformation as a result of high-temperature treatment is observed and measured. A connection is estab
lished for material deformation with structure. Deformation of carbon fiber with constant loading in the tem
perature range from 20 – 2000°C is measured. Temperature ranges are established when there is possibly ad
justment of deformation under action of an external load. The load capable of deforming carbon material or re-
storing initial billet shape is calculated. Groups of carbon materials are proposed for manufacturing shaping
mandrels for high-temperature treatment.
Keywords: carbon composite, high-temperature treatment, thermal expansion, restoration of thermal
High-temperature treatment (HTT) of billets after car-
bonization is an integral part of industrial and laboratory pro-
duction processes for manufacture of carbon composites, and
also a number of varieties of structural graphite [1, 2].
High-temperature treatment regulates carbon material true
density, its thermal and electrical conductivity, and also ob
ject geometric properties.
The aim of this work is analysis of conditions providing
a stable geometric shape for carbon-carbon composite mate
rial (CCCM) objects during high-temperature treatment,
based on directive specifications for production processes
and schemes for making up a charge of large billets. Re
cently in the domestic industrial base series production has
been restored for manufacture from CCCM with the aim of
providing primarily electrical engineering and chemical en
terprises with high-strength and heat-resistant carbon materi
als in large thin-walled forms [3, 4]. Objects of CCCM in the
current period of their production due to unique thermo
physical and physicomechanical properties are technologi
cally and economically more promising compared with
structural graphites only in the case of creating from
them medium-size and large (with dimensions up
1000 ´ 1000 ´ 500 mm and more) and thin-walled objects
(ratio of thickness to overall dimensions from 0.002 to 0.1).
Industrial production of objects of composite carbon materi
als provides this segment of market demand with structural
graphite materials. Recently the size of carbon billets of in
dustrial production in the USA has already exceeded
5000 mm [5, 6]. In China mass production has been set up
for carbon-carbon plates from 2 mm thick with sizes up to
1500 ´ 1300 mm . This increases the importance of the
purpose of the present work.
Previously with participation of one of the authors a fun
damental production scheme has been described  for man
ufacturing products from CCCM, and some questions have
been considered of providing high reliability of industrial
production for large objects, which in that period found main
use in special technology. It has been shown that the main
production method for processing all carbon-containing sub
stances in structural carbon materials is high-temperature
processing in an inert or reducing atmosphere. The most crit
ical stages in preparation of CCCM are:
– shaping of billets in spatial dimensions for finished
Refractories and Industrial Ceramics Vol. 53, No. 3, September, 2012
1083-4877/12/05303-0185 © 2012 Springer Science+Business Media New York
OAO NIIgrafit, Moscow, Russia.
ZAO Éskarb, Moscow, Russia.