Chapter 49. Effect of Silicon Carbide Addition on a Self-Reinforced Silicon Nitride
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramics Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10
How to Cite
Hwang, C. J., Yang, K., Beaman, D. and Klassen, H. (1994) Effect of Silicon Carbide Addition on a Self-Reinforced Silicon Nitride, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313978.ch49
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375198
Online ISBN: 9780470313978
Composites with a self-reinforced Si3N4 (SRS) matrix have been prepared by adding SiC of various morphologies, sizes and quantities. The variations in SiC addition have different effects upon densification, phase transformation, microstructural development and properties of the composites. Compared to monolithic SRS, the best composites contain, in relative order, SiC platelets, SiC whiskers and SiC particulates. A decrease in size or an increase in quantity slows down densification and phase transformation, hinders formation of needle-like microstructures, and impairs properties. Composites with concurrent whisker and platelet addition have characteristics that resemble those where only platelets are added.