OF CARBON-CARBON COMPOSITE MATERIALS.
COMMUNICATION 1. THERMAL STABILIZATION OF TWO-DIMENSIONALLY
REINFORCED CARBON-CARBON COMPOSITE MATERIAL
S. A. Kolesnikov
and G. E. Mostovoi
Translated from Novye Ogneupory, No. 4, pp. 31 – 38, April, 2012.
Original article submitted February 7, 2012.
The temperature field of industrial furnaces for high-temperature treatment of carbon composite blanks is
studied. An error is established for temperature field reproduction within a furnace space. Mechanical, physi
cal, and thermophysical properties of carbon blanks are studied. A safe temperature range is established for
completing the production process. The required material properties are produced with observation of produc-
tion regimes, and there is no distortion of component geometry.
Keywords: high-temperature treatment, carbon composites, composite strength, shape change, reliability of
production regime execution.
High-temperature treatment (HTT) of blanks after car-
bonization is an important stage of production processes in
the manufacture of carbon composites and structural graphite
[1 – 3]. High-temperature treatment controls the true density
of carbon materials, its thermal and electrical conductivity,
and also oxidation rate and other chemical processes. At the
same time, analysis of structural parameter formation for car
bon-carbon composite materials (CCCM), establishment of
temperature limits and instructions for HTT have received
less attention compared with two other main production pro
cesses, i.e., carbonization of blanks and carbon matrix com
The aim of this work is to study formation of CCCM
structural parameters during high-temperature treatment,
substantiation on the basis of this of specifications for pro
duction processes, and establishment of the completion lim
its for individual HTT stages. Currently domestic industry is
based on CCCM series production catering primarily for
electrical engineering and chemical enterprises with
high-strength and heat-resistant carbon materials and large
thin-walled shapes [4, 5]. Clarification of temperature limits
for improvement of the structure is of considerable economic
importance on a background of a steady increase in cost of
power generation resources.
The composites studied were based on carbon fiber from
polyacrylonitrile filament and a combined carbon matrix of
phenol formaldehyde resin coke and pyrolytic deposition of
carbon within pores. the fundamental production scheme for
manufacturing CCM products has been described previously.
Reinforcement of the structure was created by winding or
laying on a mandrel. An autoclave or compression method
was used in order to harden the phenolformaldehyde of the
original binder. Carbonization was carried out within fur
naces with a controlled reducing gas atmosphere. The raw
material for preparing pyrolytic carbon was supply-line hy
drocarbon natural gas, containing 90 – 95% carbon, and the
rest was mainly hydrogen.
Measurements and testing during a study of composite
materials (CM) and CCCM properties, monitoring of pro
duction operations for CM preparation, their carbonization
and compaction, and also HTT, were carried out by means of
metrologically certified measurement facilities by proce
dures of the OAO NIIgrafit Test Center for Carbon Mate
Refractories and Industrial Ceramics Vol. 53, No. 2, July, 2012
1083-4877/12/05302-0123 © 2012 Springer Science+Business Media, Inc.
OAO NIIgrafit, Moscow, Russia.