Chapter 34. Alternative Interphase Coatings for Improved Durability in SIC/SIC Composites

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. Frances I. Hurwitz1 and
  2. Robert J. Shinavski2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294826.ch34

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4

How to Cite

Hurwitz, F. I. and Shinavski, R. J. (2003) Alternative Interphase Coatings for Improved Durability in SIC/SIC Composites, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: B: Ceramic Engineering and Science Proceedings, Volume 24, Issue 4 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294826.ch34

Author Information

  1. 1

    NASA Glenn Research Center, 21000 Brookpark Rd., Cleveland, OH, 44135

  2. 2

    Hyper-Therm, Inc., 18411 Gothard Street, B&C, Huntington Beach, CA 92648

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375846

Online ISBN: 9780470294826

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Keywords:

  • boron nitride coatings;
  • fiber/matrix interfacial bond;
  • adequate degree;
  • chemical vapor deposition;
  • oxidative instability

Summary

Boron nitride coatings are typically used to effect a mechanically weak bond or compliant interphase in SiC/SiC composites. However, BN is moisture sensitive and subject to degradation with loss of boria, particularly at intermediate temperatures (850-950°C). The current work examines the influence of an Al dopant in a low temperature, vapor derived BN, as well as a dual layer AlN/BN interphase coating, on composite durability under stress rupture conditions in air at 950 an 1200°C.