Chapter 19. Thermal Stability Characterization of SiC Ceramic Fibers: II, Fractography and Structure

  1. William Smothers
  1. Linda C. Sawyer,
  2. Rong T. Chen,
  3. Frank Haimbach Iv,
  4. Paul J. Harget,
  5. Edward R. Prack and
  6. Michael Jaffe

Published Online: 27 MAR 2008

DOI: 10.1002/9780470320341.ch19

10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8

10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8

How to Cite

Sawyer, L. C., Chen, R. T., Iv, F. H., Harget, P. J., Prack, E. R. and Jaffe, M. (1986) Thermal Stability Characterization of SiC Ceramic Fibers: II, Fractography and Structure, in 10th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 7, Issue 7/8 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320341.ch19

Author Information

  1. Celanese Research Co. 86 Morris Ave., Summit, NJ 07901

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 1986

ISBN Information

Print ISBN: 9780470374672

Online ISBN: 9780470320341

SEARCH

Keywords:

  • thermal treatment;
  • mechanism;
  • polymer precursors;
  • strength properties;
  • degradation

Summary

SiC ceramic fibers (Nicalon™)1 exhibit tensile strength reduction following thermal treatment in air, argon and nitrogen environments above 1200 d̀C. Grain-size variations have been observed in the treated fibers by X-ray diffraction and electron microscopy. Fractography studies show that strength reduction occurs in all thermal treatments, although the mechanism of fiber failure varies depending upon the specific environment. Structure-property relations will be developed as mechanical testing and fractography of the thermally treated fibers are associated with tensile strength loss mechanisms.