Chapter 11. Correlation of Compressive and Shear Stress with Spalling of Plasma-Sprayed Ceramic Materials

  1. William Smothers
  1. Robert L. Mullen1,
  2. Glenn McDonald2,
  3. Robert C. Hendricks2 and
  4. Mary M. Hofle3

Published Online: 26 MAR 2008

DOI: 10.1002/9780470320167.ch11

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

Mullen, R. L., McDonald, G., Hendricks, R. C. and Hofle, M. M. (2008) Correlation of Compressive and Shear Stress with Spalling of Plasma-Sprayed Ceramic 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.ch11

Author Information

  1. 1

    Case Western Reserve University, Department of Civil Engineering Cleveland, OH 44106

  2. 2

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

  3. 3

    Rensselaer Polytechnic Institute Troy, NY 12181

Publication History

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

ISBN Information

Print ISBN: 9780470374047

Online ISBN: 9780470320167

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Keywords:

  • potential;
  • stresses;
  • associated;
  • assigned;
  • reliability

Summary

Ceramics on metal substrates for potential use as high temperature seals or other applications are exposed to forces originating from differences in thermal expansion between the ceramic and the metal substrate. The associated stresses produce spalling in ceramics, e.g., plasma-sprayed ZrO2-Y2O3, Al2O3-TiO2, and porcelain enamel. The off-axis effect of compression forces resulting from high temperature plastic flow of the ceramic producing buckling of the ceramic is developed. An estimate of shear stress is made. Shear is associated with the edge or boundary stresses on the component while bending is associated with the distortion of an interior region. Both modes are significant in predicting life of the ceramic.