Chapter 77. Development of Morphology and Stresses in a Class of Thermal Barrier Systems During Thermal Cycling

  1. Waltraud M. Kriven and
  2. Hua-Tay Lin
  1. A. M. Karlsson

Published Online: 27 MAR 2008

DOI: 10.1002/9780470294802.ch77

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3

How to Cite

Karlsson, A. M. (2003) Development of Morphology and Stresses in a Class of Thermal Barrier Systems During Thermal Cycling, in 27th Annual Cocoa Beach Conference on Advanced Ceramics and Composites: A: Ceramic Engineering and Science Proceedings, Volume 24, Issue 3 (eds W. M. Kriven and H.-T. Lin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294802.ch77

Author Information

  1. Department of Mechanical Engineering University of Delaware Newark, DE 1971

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2003

ISBN Information

Print ISBN: 9780470375839

Online ISBN: 9780470294802

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Keywords:

  • thermal barrier coatings;
  • thermal conductivity;
  • finite element;
  • image digtization;
  • microstructural calculations

Summary

The morphology and the material properties continuously evolve during the lifetime of a thermal barrier coating. For example, the growth of the thermally grown oxide (TGO) is associated with a range of thermo-mechanical property changes as the system is aged. Accordingly, many failures are related to the TGO formation, where cracks nucleate, propagate and coalesce to eventually cause spallation of the ceramic topcoat. This work treats the development of a system based on Pt-modified aluminde bond coat, which undergoes martensitic transformations.