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Microstructural characterization of a SiC Whisker-Reinforced HIPped Reaction-Bonded Si3N4

Published online by Cambridge University Press:  22 February 2011

S. C. Farmer ,
P. Pirouz  and
A. H. Heuer
S. C. Farmer
Affiliation:
Department of Material Science and Eng. Case Western Reserve University Cleveland, Ohio 44106
P. Pirouz
Affiliation:
Department of Material Science and Eng. Case Western Reserve University Cleveland, Ohio 44106
A. H. Heuer
Affiliation:
Department of Material Science and Eng. Case Western Reserve University Cleveland, Ohio 44106
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Abstract

A SiC whisker reinforced HIPped RBSN material fabricated with a Y2O3 sintering aid was characterized using TEM. The matrix is > 90% β-Si3 N4 with a Y-Si-O-N glassy phase at the Si3 N4 grain boundaries and about the SiC whiskers. The SiC whisiers are heavily faulted and have a well defined core. Si3 N4 precipitates are observed in the core region after composite fabrication. A preliminary mechanism for the growth of the SiC whisker, based on the VLS mechanism is proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 120: Symposium G – High-Temperature/High-Performance Composites , 1988 , 169
Copyright
Copyright © Materials Research Society 1988

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References

1. Wilkins, C.A. and Corbin, N.D., CCM Meeting Proceedings October 1987, to be published.Google Scholar
2. N.D. Corbin (private communication).Google Scholar
3. Bootsma, G.A., Knippenberg, W.F. and Verspui, G., J. Crystal Growth 11, 297 (1971).Google Scholar
4. Nutt, S.R., J. Am. Ceram. Soc. 67[6], 428 (1984); 71[3], 149 (1988).Google Scholar
5. Dickson, E.W. and Pashley, D.W., Phil. Mag. 7, 1315 (1962).Google Scholar
6. Milewski, J.V., Gac, F.D., Petrovic, J.J. and-Skaggs, S.R., J. Mat. Sci. 20, 1160 (1985).Google Scholar