Chapter 42. Improved Carbon Coatings for Silicon Carbide Whiskers

  1. John B. Wachtman Jr.
  1. Thomas J. Mroz,
  2. Eric A. Groat,
  3. John P. Buckner and
  4. Joseph M. Prinzbach

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314555.ch42

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5

How to Cite

Mroz, T. J., Groat, E. A., Buckner, J. P. and Prinzbach, J. M. (1994) Improved Carbon Coatings for Silicon Carbide Whiskers, in Proceedings of the 18th Annual Conference on Composites and Advanced Ceramic Materials - B: Ceramic Engineering and Science Proceedings, Volume 15, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314555.ch42

Author Information

  1. Advanced Refractory Technologies, Inc., Buffalo, N.Y. 14207

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1994

ISBN Information

Print ISBN: 9780470375334

Online ISBN: 9780470314555

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Keywords:

  • high carbon yield polymers;
  • silicon carbide whiskers;
  • uniformity and reproducibility of coating thicknes;
  • polymer coatings;
  • in -situ during composite consolidation

Summary

High carbon yield polymers have been deposited on silicon carbide whiskers over a wide range of thicknesses. Uniformity and reproducibility of coating thickness has been demonstrated for polymer coatings from 10 nm to 1 um. Conversion of the polymer to carbon proceeds by a simple pyrolysis step, which can be performed as a separate step, or in-situ during composite consolidation. Coating thicknesses are related to the initial polymer coating, thus thick (ie. 100 nm) carbon coatings can be obtained. Stability of the coating at high temperatures (>1600 C) is dependent upon the amount of oxygen available at the whisker surface, surounding materials, and an undetermined temperature dependant variable.