Chapter 27. Use of Fiber-Like Materials to Augment Cycle Life of Thick, Thermoprotective-Seal Coatings

  1. William J. Smothers
  1. Robert C. Hendricks and
  2. Glenn Mcdonald

Published Online: 26 MAR 2008

DOI: 10.1002/9780470318782.ch27

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

Hendricks, R. C. and Mcdonald, G. (1982) Use of Fiber-Like Materials to Augment Cycle Life of Thick, Thermoprotective-Seal Coatings, 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.ch27

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 1982

ISBN Information

Print ISBN: 9780470373972

Online ISBN: 9780470318782

SEARCH

Keywords:

  • accommodate;
  • detrimental;
  • thermal-stress;
  • leading-edge;
  • propagation

Summary

Experimental and analytical studies of plasma-sprayed ZrO2-Y2O3 thick, thermoprotective-seal materials over NiCrAlY bond coats indicate the need for material to have both compliance and sufficient strength to function successfully as a thick, thermo-protective-seal material. Fibrous materials may satisfy many of these requirements. A preliminary analysis of a 25-mm cylindrical SiO2-fiber material and a 12-mm cylindrical ZrO2-fiber material indicated significant radial temperature gradients, a relatively cool interface, and generally acceptable stresses over the initial portion of the thermal cycle. Subsequent testing of these fiber-like materials in a Mach-0.3 Jet A fuel/air burner flame confirmed these results.