Chapter 5. Suppression of the Solid-State Reaction Between Ni-Base Alloys and Si-Base Ceramics

  1. William J. Smothers
  1. R. L. Mehan and
  2. M. R. Jackson

Published Online: 26 MAR 2008

DOI: 10.1002/9780470318782.ch5

Proceedings of the 6th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 3, Issue 9/10

Proceedings of the 6th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 3, Issue 9/10

How to Cite

Mehan, R. L. and Jackson, M. R. (1982) Suppression of the Solid-State Reaction Between Ni-Base Alloys and Si-Base Ceramics, in Proceedings of the 6th Annual Conference on Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings, Volume 3, Issue 9/10 (ed W. J. Smothers), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470318782.ch5

Author Information

  1. Corporate Research and Development, General Electric Co. Schenectady, NY 12345

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1982

ISBN Information

Print ISBN: 9780470373972

Online ISBN: 9780470318782

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Keywords:

  • no-pickle powder system;
  • paint/spray washer method;
  • pickle-free enameling;
  • paint washer;
  • potential pollutants

Summary

Silicon-base ceramics have been found to react severely with Ni-base alloys at temperatures >800°–900°C, requiring the use of barrier coatings if these materials are to be used as structural components in hot machinery. Both metal and ceramic barrier coatings were investigated, and Y2O3 was found to completely suppress the reaction between a model superalloy and both SiC and Si-SiC for a single heating cycle. However, flaking of the Y2O3 after cooling to room temperature must be overcome before this coating can be successfully used in service.