Development of Si-Ti-C-O fiber reinforced SiC composites by chemical vapor infiltration and polymer impregnation & pyrolysis
Conference
·
OSTI ID:134922
- Research Institute of Advanced Material Gas-Generator, Tokyo (Japan)
Continuous Si-Ti-C-O fiber reinforced SiC matrix composites were developed and evaluated. Three dimensional woven fabrics with carbon interface prepared by chemical vapor deposition (CVD) were densified by the combined process of chemical vapor infiltration (CVI) and polymer impregnation and Pyrolysis (PIP). The composite exhibited anisotropy depending on the amount of fibers. The maximum tensile strength was more am 500 MPa at room temperature. Two kinds of in situ carbon rich surface layers were formed by fiber-processing. One is ultra-thin 10 nm graphite layer on graded carbon and the other one is graded carbon layer covered with thin silicon oxide. Both of them worked as effective interfaces.
- OSTI ID:
- 134922
- Report Number(s):
- CONF-9508127--
- Country of Publication:
- United States
- Language:
- English
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