49. Application of Microwave Self–Heating Technique to the Detection of Microfracture in Thermal Barrier Coating System

  1. Hau-Tay Lin and
  2. Mrityunjay Singh
  1. Mitomi Miyata,
  2. Shijie Zhu and
  3. Yutaka Kagawa

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294758.ch49

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

How to Cite

Miyata, M., Zhu, S. and Kagawa, Y. (2002) Application of Microwave Self–Heating Technique to the Detection of Microfracture in Thermal Barrier Coating System, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294758.ch49

Author Information

  1. Institute of Industrial Science, The University of Tokyo 4–6–1 Komaba, Tokyo 153–8505, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375792

Online ISBN: 9780470294758

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Keywords:

  • microwave self heating;
  • thermal imaging techniques;
  • microfracture behavior;
  • plasma spraying;
  • thermal barrier coatings

Summary

Combination of microwave self heating and thermal imaging techniques has been applied to the evaluation of microfracture behavior in thermal barrier coating system. The plasma sprayed ZrO2 top coat and NiCoCrAlY bond coat on a stainless steel substrate were used as test specimens. The sphere indentation tests were conducted to introduce damage of interfaces. The damaged coating was radiated by microwave and the change in temperature was monitored. It was found that the method was effective to detect microdamage in the top coat layer.