Chapter 23. Thermal Stability of the Low Oxygen Silicon Carbide Fibers Derived from Polycarbosilane
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1992 The American Ceramic Society
Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8
How to Cite
Takeda, M., Imai, Y., Ichikawa, H., Ishikawa, T., Kasai, N., Suguchi, T. and Okamura, K. (1994) Thermal Stability of the Low Oxygen Silicon Carbide Fibers Derived from Polycarbosilane, in Proceedings of the 16th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 13, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313954.ch23
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375174
Online ISBN: 9780470313954
SiC fibers with excellent thermal stability have been developed by means of reducing their oxygen content. Polycarbosilane fibers were cured by electron beam irradiation in a stream of helium and were pyrolized in an inert atmosphere. These SiC fibers were continuous, in multi-filament form, consisting of Si-1.3C-0.020 by atomic ratio. They had a high tensile strength and elastic modulus of 2.8GPa and 270GPa, respectively. At high temperature, the low oxygen SiC fibers were observed to undergo no chemical decompositions and retained good tensile properties. The mechanical properties of the SiC composites reinforced by these SiC fibers were also investigated.