11. Investigation of Thermal Fatigue Life Prediction of Thermal Barrier Coating

  1. Dongming Zhu and
  2. Kevin Plucknett
  1. Y. Ohtake,
  2. T. Natsumura and
  3. K. Miyazawa

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291238.ch11

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3

How to Cite

Ohtake, Y., Natsumura, T. and Miyazawa, K. (2008) Investigation of Thermal Fatigue Life Prediction of Thermal Barrier Coating, in Advances in Ceramic Coatings and Ceramic-Metal Systems: Ceramic Engineering and Science Proceedings, Volume 26, Number 3 (eds D. Zhu and K. Plucknett), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291238.ch11

Author Information

  1. Ishikawajima-Harima Heavy Industries Co., Ltd. 1, Shin-Nakahara-Cho, Isogo-ku, Yokohatna-shi, Kanagawa 23S-8S01, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982336

Online ISBN: 9780470291238

SEARCH

Keywords:

  • methodology;
  • amplitude;
  • thermal;
  • microscope;
  • configuration

Summary

Thermal barrier coating is applied to some airplane engine parts to improve engine performance and increase durability at high temperature. These parts are thermally cycled during the operation of the engine. Thus, it is desired to develop thermal fatigue life prediction methodology of the thermal barrier coating for design. Thermal barrier coatings are used as a coating system with an environment barrier coating to increase the oxidation resistant of the substrate. The coating durability is still an issue because delamination near the interface of the environment barrier coating is observed during thermal cycles. It is presumed that failure resulted from the growth of a thermal growth oxidation (TGO) layer along the interface. This paper examines the growth law of the TGO layer and the resulting stresses in thermal barrier coating near the interface for three kinds of interface shapes using the finite element method. It was found that the TGO growth rate increases with increasing temperature but not with the thermal barrier coating thickness. The stresses in the thermal barrier coating increases with increasing the amplitude of the waviness of the interface resulting in reduced the thermal barrier coating life. This paper was investigated about the effects of coating thickness and interface waviness.