Chapter 9. Chemical Vapor Infiltration with Microwave Heating
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1993 The American Ceramic Society
Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10
How to Cite
Devlin, D. J., Currier, R. P., Barbero, R. S. and Espinoza, B. F. (1993) Chemical Vapor Infiltration with Microwave Heating, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314234.ch9
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1993
Print ISBN: 9780470375273
Online ISBN: 9780470314234
- thermal profiles;
- thermal shock resistance;
- electrommagnetic radiation;
The use of microwave energy to heat substrates during chemical vapor infiltration (CVI) is described. Both numerical predictions and experimentally observed thermal profiles indicate that steep inverted thermal gradients can be established in fibrous preforms subjected to microwave radiation. When combined with the CVI technique, the inverted gradients can be exploited to promote inside-our densification. Recent microwave assisted CVI results, which focus on silicon based matrix materials, are described. Emphasis is placed on the role played by the relative ability of fiber and matrix to dissipate microwave energy. Issues central to further process development, such as the effect of interfacial coating on subsequent microwave processing, are discussed.