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Interface control and design for SiC fiber-reinforced titanium aluminide composites

Published online by Cambridge University Press:  31 January 2011

Hsing-Pang Chiu ,
S.M. Jeng  and
J-M. Yang
Hsing-Pang Chiu
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024–1595
S.M. Jeng
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024–1595
J-M. Yang
Affiliation:
Department of Materials Science and Engineering, University of California, Los Angeles, California 90024–1595
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Abstract

The effectiveness of several coating systems which were used as a diffusion barrier for the SiC fiber-reinforced titanium aluminide composites was investigated. TaC, TiC, TiB2, B, C/graded TiB2, and Ag/Ta were applied to the SiC fiber via chemical vapor deposition and physical vapor deposition. The interfacial compatibility, interfacial stability, thermal residual stress, interfacial bond strength, and the transverse fracture behavior of the composites with coated fibers were characterized and determined. The results show that none of the above coating systems can satisfy the requirements for a strong, tough, and damage-tolerant SiC fiber-reinforced titanium aluminide composite. Several multilayer, multifunctional coating systems are proposed.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 8 , August 1993 , pp. 2040 - 2053
Copyright
Copyright © Materials Research Society 1993

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References

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