Chapter 22. Polymer-Derived Silicon Carbide Fibers with low Oxygen Content
- 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
Toreki, W., Choi, G. J., Batich, C. D. and Sacks, M. D. (1994) Polymer-Derived Silicon Carbide Fibers with low Oxygen Content, 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.ch22
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1994
Print ISBN: 9780470375174
Online ISBN: 9780470313954
Continuous silicon carbide fibers with low oxygen content (2 wt%) were prepared in a range of diameters (∼10–50 μm) by dry spinning of polycarbosilane solutions and subsequent pyrolysis of the polymer fibers. Average tensile strengths approaching 3 GPa were obtained for some batches with fiber diameters in the range ∼10–15 μm. These fibers showed excellent thermomechamical stability compared to commercially-available NicalonTM fibers, i.e., significantly lower weight loss and higher tensile strength were observed after heat treatment in argon at elevated temperatures (1200–1700°C). Fibers tested at 1400°C in air also showed higher tensile strengths compared to Nicalon.