Chapter 40. High Heat-Resistant SiC-Polycrystalline Fiber and Its Fiber-Bonded Ceramic

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Toshihim Ishikawa,
  2. Shinji Kajii and
  3. Terumi Hisayuki

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch40

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

Ishikawa, T., Kajii, S. and Hisayuki, T. (2008) High Heat-Resistant SiC-Polycrystalline Fiber and Its Fiber-Bonded Ceramic, 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.ch40

Author Information

  1. Ube Industries Ltd., 1978–5 Kogushi, Ube City, Yamaguchi Prefecture, 755–8633 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:

  • high temperature stability;
  • high thermal conductivity;
  • nonoxide ceramic materials;
  • polycarbosilane;
  • condensation reaction

Summary

High-temperature stability of Sic-based ceramics has led to their use in high-temperature structural materials and composites. Here we describe the recent results on a type of silicon carbide polycrystalline fiber (SA fiber) obtained by sintering an amorphous Si-Al-C-O fiber precursor at a high temperature over 1900°C. Furthermore, we also explain a sintered SiC fiber-bonded ceramic (SA-Tyrannohex), which was synthesized by hot-pressing piled sheets of the amorphous Si-Al-C-O fiber precursor prepared from an organosilicon polymer. These materials showed excellent high-temperature properties including better creep-resistance and high thermal conductivity. The mechanical strength and high temperature property of both materials were also found to be conspicuously improved by decrease in the diameter of the starting fiber. These improvements were closely related to the microscopic structure of the fiber itself or fiber element.