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The Influence of Carbon Fiber Heat Treatment Temperature on Carbon-Carbon Brakes Characteristics
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  • Journal title : Carbon letters
  • Volume 14, Issue 1,  2013, pp.22-26
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2012.14.1.022
 Title & Authors
The Influence of Carbon Fiber Heat Treatment Temperature on Carbon-Carbon Brakes Characteristics
Galiguzov, Andrey; Malakho, Artem; Kulakov, Valery; Kenigfest, Anatoly; Kramarenko, Evgeny; Avdeev, Viktor;
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The effects of heat treatment temperature (HTT) of polyacrylonitrile-based carbon fiber (CF) on the mechanical, thermal, and tribological properties of C/C composites were investigated. It was found that HTT (graphitization) of CF affects the thermal conductivity and mechanical and tribological characteristics of C/C composites. Thermal treatment of fibers at temperatures up to led to a decrease of the wear rate and the friction coefficient of C/C composite-based discs from 7.0 to 1.1 /stop and from 0.356 to 0.269, respectively. The friction surface morphology and friction mechanism strongly depended on the mechanical properties of the CFs. The relief of the friction surface of composites based on CFs with final graphitization was also modified, compared to that of composites based on initial fibers. This phenomenon could be explained by modification of the abrasive wear resistance of reinforcement fibers and consequently modification of the friction and wearing properties of composites. Correlation of the graphitization temperature with the increased flexural and compressive strength, apparent density, and thermal conductivity of the composites was also demonstrated.
aerospace materials;CF;heat treatment;graphitization;carbon-carbon composite;wear and friction;
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