Chapter 30. Oxidation of AlN Matrix Composites Containing Discrete SiC Whiskers

  1. John B. Wachtman Jr.
  1. Thomas J. Mroz

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314500.ch30

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4

How to Cite

Mroz, T. J. (1994) Oxidation of AlN Matrix Composites Containing Discrete SiC Whiskers, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - A: Ceramic Engineering and Science Proceedings, Volume 15, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314500.ch30

Author Information

  1. Advanced Refractory Technologies, Inc., Buffalo, N.Y. 14207

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375327

Online ISBN: 9780470314500

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Keywords:

  • non-oxide;
  • characterization;
  • corrosion;
  • mullite;
  • oxidation

Summary

Solid solutions of aluminum nitride and silicon carbide are known to exhibit improved oxidation resistance compared to either end member. However, this characteristic has not been demonstrated for discrete phase composites because of the difficulty in fabricating this material combination. Recent advances in the preparation of phase segregated AIN matrix composites containing silicon carbide whiskers has provided a means of performing this characterization.

Oxidation resistance of AIN-SiCw composites will be presented for samples exposed to air at temperatures up to 1400 °C. Oxidation rate as a function of temperature and SiCw content will be investigated. Characterization of the microstructure and phases in the oxidized layer will be presented, initial mechanical property results will be compared to unoxidized samples.