发明名称 |
CVI followed by coal tar pitch densification by VPI |
摘要 |
<p>Method for manufacturing pitch-densified carbon-carbon composite brake discs from carbon fiber preforms, by the following sequential steps: (a) providing a carbon-carbon composite brake disc preform; (b) heat treating the preform; (c) subjecting the heat-treated preform to Chemical Vapor Deposition/Chemical Vapor Infiltration processing; (d) infiltrating the preform with an isotropic low to medium char-yield pitch by Vacuum Pitch Infiltration processing or Resin Transfer Molding processing; (e) carbonizing the pitch-infiltrated preform; (f) machining the surfaces of the resulting carbonized preform; and (g) repeating steps (d) through (f) until the density of the carbon-carbon composite preform is at least 1.70 g/cc. The use of VPI equipment with isotropic, low to medium char-yield pitches for all densification steps following an initial CVD densification reduces capital and pitch materials cost. However, one or more RTM processing steps employing low to medium char-yield pitches may also be used to obtain improved economics.</p> |
申请公布号 |
EP2093453(A1) |
申请公布日期 |
2009.08.26 |
申请号 |
EP20090152412 |
申请日期 |
2009.02.09 |
申请人 |
HONEYWELL INTERNATIONAL INC. |
发明人 |
LA FOREST, MARK L.;MURDIE, NEIL;SIMPSON, ALAN H. |
分类号 |
F16D69/02 |
主分类号 |
F16D69/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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