发明名称 |
Method for reducing variability in carbon-carbon composites |
摘要 |
Method for producing carbon-carbon composite brake discs by: (a) providing annular nonwoven carbon fiber brake disc preforms; (b) carbonizing the brake disc preforms; (c) densifying the carbonized preforms by CVD/CVI (chemical vapor deposition/chemical vapor infiltration); (d) densifying the products of step (c) with isotropic or mesophase pitch by VPI (vacuum pitch infiltration) or RTM (resin transfer molding) processing; (e) carbonizing the preforms to remove non-carbon volatiles from the pitch and to open porosity in the pitch-infused preforms; (f) densifying the products of step (e) with isotropic or mesophase pitch by VPI or RTM processing; (g) carbonizing the preforms to remove non-carbon volatiles from pitch and to open porosity in the pitch-infused preforms; and (h) heat-treating the resulting pitch-densified carbon-carbon composite brake disc preforms. This manufacturing approach reduces lot-to-lot variability in friction performance of the resulting carbon-carbon composite brake discs.
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申请公布号 |
US8268208(B2) |
申请公布日期 |
2012.09.18 |
申请号 |
US201113171786 |
申请日期 |
2011.06.29 |
申请人 |
LA FOREST MARK L.;MURDIE NEIL;SIMPSON ALLEN H.;HONEYWELL INTERNATIONAL INC. |
发明人 |
LA FOREST MARK L.;MURDIE NEIL;SIMPSON ALLEN H. |
分类号 |
C01B31/00 |
主分类号 |
C01B31/00 |
代理机构 |
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代理人 |
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地址 |
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