发明名称 |
DENSIFICATION OF C-C COMPOSITES WITH PITCHES FOLLOWED BY CVI/CVD |
摘要 |
A method of manufacturing pitch-based carbon-carbon composite useful as a brake disc, includes (a) providing annular carbon fiber brake disc preform; (b) heat-treating the carbon fiber preform; (c) infiltrating the carbon fiber preform with pitch feedstock by VPI or RTM processing; (d) carbonizing the pitch-infiltrated carbon fiber preform; (e) repeating steps (c) and (d) to achieve a density in the carbon fiber preform of approximately 1.5 g/cc to below 1.7 g/cc; and (f) densifying the preform by CVI/CVD processing to a density higher than 1.7 g/cc. Employing lower cost VPI and/or RTM processing in early pitch densification cycles and using more expensive CVI/CVD processing only in the last densification cycle provides C-C composites in which the pitch-based components resist pullout, resulting in a longer wearing composite.
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申请公布号 |
US2011156297(A1) |
申请公布日期 |
2011.06.30 |
申请号 |
US201113044386 |
申请日期 |
2011.03.09 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
LA FOREST MARK L.;MURDIE NEIL;SIMPSON ALLEN H. |
分类号 |
C01B31/22 |
主分类号 |
C01B31/22 |
代理机构 |
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代理人 |
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地址 |
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