Invention Grant
US08268207B2 Densification of C-C composites with pitches followed by CVI/CVD
有权
C-C复合材料用间距密封CVI / CVD进行致密化
- Patent Title: Densification of C-C composites with pitches followed by CVI/CVD
- Patent Title (中): C-C复合材料用间距密封CVI / CVD进行致密化
-
Application No.: US13044386Application Date: 2011-03-09
-
Publication No.: US08268207B2Publication Date: 2012-09-18
- Inventor: Mark L. La Forest , Neil Murdie , Allen H. Simpson
- Applicant: Mark L. La Forest , Neil Murdie , Allen H. Simpson
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: C01B31/00
- IPC: C01B31/00

Abstract:
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.
Public/Granted literature
- US20110156297A1 DENSIFICATION OF C-C COMPOSITES WITH PITCHES FOLLOWED BY CVI/CVD Public/Granted day:2011-06-30
Information query