Chapter 42. Microstructure and Properties of Liquid Phase Sintered SiC/SiC Composites
- Hua-Tay Lin,
- Mrityunjay Singh
Published Online: 26 MAR 2008
DOI: 10.1002/9780470294741.ch42
Copyright © 2002 The American Ceramic Society
Book Title
26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3
Additional Information
How to Cite
Katoh, Y., Kohyama, A., Kai, J. .-J., Dong, S. and Hinoki, T. (2008) Microstructure and Properties of Liquid Phase Sintered SiC/SiC Composites, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294741.ch42
Publication History
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2002
Book Series:
ISBN Information
Print ISBN: 9780470375785
Online ISBN: 9780470294741
- Summary
- Chapter
- References
Keywords:
- SiC;
- tailorability;
- combustion;
- hermeticity;
- SiC-matrix
Summary
SiC/SiC composites with attractive thermo-mechanical properties and gas tightness have been developed through a combination of transient liquid-phase sintering of nano-phase SiC powders mixed with oxide additives and advanced near-stoichiometric SiC fibers with an appropriate coating. The mechanical properties generally unproved with the increased sintering temperature and pressure in the range employed in the present experiment. The mechanical property improvement was attributed to the reduced intra-fiber bundle matrix porosity and the promoted matrix sintering. The matrix consisted mostly of even-sized SiC crystal grains both in fiber-bundle and fiber-free regions. Thermal conductivity is likely be determined by the grain boundary scattering. The thermo-mechanical properties of the composites will be tailorable by controlling the matrix microstructure through varying the sintering temperature and time. The tailorability will probably be limited by interfacial structure integrity and the fibers' heat resistance.