Chapter 7. Processing of Fused Silicide Coatings for Carbon-Based Materials

  1. William Smothers
  1. James L. Smialek

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320167.ch7

Proceedings of the 7th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 4, Issue 9/10

Proceedings of the 7th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 4, Issue 9/10

How to Cite

Smialek, J. L. (1983) Processing of Fused Silicide Coatings for Carbon-Based Materials, in Proceedings of the 7th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 4, Issue 9/10 (ed W. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470320167.ch7

Author Information

  1. NASA-Lewis Research Center 21000 Brookpark Rd., Cleveland, OH 44135

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1983

ISBN Information

Print ISBN: 9780470374047

Online ISBN: 9780470320167

SEARCH

Keywords:

  • oxidation;
  • molten;
  • coating;
  • combination;
  • exhaust

Summary

The processing and oxidation resistance of fused At-Si slurry coatings on graphite' were studied. Aluminum-Si coatings could not be successfully produced, nor were they protective. Nickel-Si coatings in the 70% to 90% Si range were successfully processed to melt, wet, and bond to the graphite. The molten coatings also infiltrated the porosity in graphite and reacted with it to form SiC in the coating. Cyclic oxidation at 1200°C showed that these coatings were not totally protective because of local attack of the substrate due to the extreme thinness of the coatings in combination with coating cracks.