Chapter 29. Mg-Si-Al-O Coatings on Hi-Nicalon SiC Fiber by Alkoxide Method

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Naoki Igawa,
  2. Tomitsugu Taguchi,
  3. Reiji Yamada and
  4. Shiro Jitsukawa

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch29

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

Igawa, N., Taguchi, T., Yamada, R. and Jitsukawa, S. (2008) Mg-Si-Al-O Coatings on Hi-Nicalon SiC Fiber by Alkoxide Method, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch29

Author Information

  1. Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken, 319–1195, Japan

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • tensile strength;
  • no coated fiber;
  • sic fiber;
  • fabricat;
  • mono alkoxide

Summary

Mg-Si-Al-O coatings on SiC fiber as the interfacial material of SiC/SiC composites were prepared by alkoxide method. Almost the surface on the fibers were coated completely by only 2 time dipping in the coating solution of [Al]T=0.50mol/dm3 and [Mg]T=0.25mol/dm3 or that of [Mg]T=0.50 mol/dm3 and [Si]T=0.25mol/dm3. The phases of these coating layers were a mixture of Al2O3, MgO and MgAl2O4, or a mixture of MgO, SiO2 and Mg2SiO4 up to 1673K in a vacuum. The tensile strength of coated fiber heated below 1473K was lower than that of no-coated fiber and that degradation was increased with the number of dipping; the tensile strength of coated fiber by 5 times dipping (0.95 GPa heated at 1473K) was remarkably lower than that by 2 times dipping(1.6 GPa).