Chapter 59. Oxidation and Retained Strength of in situ O'- β Sialon Composites
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1993 The American Ceramic Society
Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8
How to Cite
O'Brien, M. H., Huang, C. M. and Coon, D. N. (1993) Oxidation and Retained Strength of in situ O'- β Sialon Composites, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch59
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1993
Print ISBN: 9780470375266
Online ISBN: 9780470314180
- silicon oxynitride;
Pressureless sintered multi-phase in situ SiAlON composites having compositions between O' and β'(z<1) SiAlON are characterized. Oxidation kinetics and retained strength after oxidation are presented as a function of original phase content. The highest O' SiAlON content samples were significantly more resistant to passive oxidation in air. The activation energies suggest control by oxygen diffusion. Overall rates of oxidation are dominated by the Arrhenius frequency factor. In general, the retained strength after oxidation increased with the oxidation resistance, but was strongly influenced by the microstructure of the oxide surface layer.