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자료유형
동향자료
저자정보
Galiguzov, Andrey (Chemistry Department, Lomonosov Moscow State University) Malakho, Artem (Chemistry Department, Lomonosov Moscow State University) Kulakov, Valery (The Aircraft Corporation RUBIN) Kenigfest, Anatoly (The Aircraft Corporation RUBIN) Kramarenko, Evgeny (The Aircraft Corporation RUBIN) Avdeev, Viktor (Chemistry Department, Lomonosov Moscow State University)
저널정보
한국탄소학회 Carbon letters Carbon letters 제14권 제1호
발행연도
2013.1
수록면
22 - 26 (5page)

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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 $2800^{\circ}C$ led to a decrease of the wear rate and the friction coefficient of C/C composite-based discs from 7.0 to 1.1 ${\mu}m$/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.

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