Chapter 41. Creep Behavior of Polymer-Derived SiC-Based Fibers

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Michael D. Sacks and
  2. Greg A. Staab

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch41

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

Sacks, M. D. and Staab, G. A. (2000) Creep Behavior of Polymer-Derived SiC-Based Fibers, 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.ch41

Author Information

  1. Georgia Institute of Technology, Atlanta, GA 30332–0245

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:

  • polymer derived;
  • near stoichiometric fibers;
  • organosilicon polymer;
  • bend stress relaxation;
  • fabrication

Summary

Polymer-derived SiC-based fibers with fine-diameter (∼ 10–15 μm) and high strength (∼ 3 GPa) were prepared with carbon-rich and near-stoichiometric compositions. The creep resistance of these fibers (as assessed by bend stress relaxation, BSR, measurements) could be improved significantly by annealing heat treatments in nonoxidizing atmospheres. Fibers also showed excellent strength retention after annealing heat treatments up to 1700°C for the carbon-rich fibers and up to 1950°C for the near-stoichiometric fibers. The near-stoichiometric fibers could be prepared with ∼ 3 GPa tensile strength and BSR creep behavior which was significantly better than previously reported for other types of polymer-derived SiC- based fibers.