Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (7): 680-686.doi: 10.3724/SP.J.1077.2012.11565

• Review • Previous Articles     Next Articles

Progress of Research on the Failure Mechanism of Thermal Barrier Coatings

HUA Jia-Jie1, ZHANG Li-PENG2, LIU Zi-Wei1, WANG Yong-Zhe1, LIN Chu-Cheng1, ZENG Yi1, ZHENG Xue-Bing3   

  1. (1. The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. Wan Jie Group CO., LTD, Zibo, 255213, China; 3. Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)
  • Received:2011-09-06 Revised:2012-02-01 Online:2012-07-20 Published:2012-06-06
  • Contact: ZENG Yi E-mail:zengyi@mail.sic.ac.cn
  • About author:HUA Jia-Jie. E-mail: huajiajie@mail.sic.ac.cn
  • Supported by:

    Science and Technology Innovation Project of Shanghai Institute of Ceramics (Y17ZC5150G); Nanotechnology Project of Shanghai Science and Technology Committee (11nm0506900)

Abstract: Thermal barrier coatings (TBCs) is one of the important materials of turbines for propulsion and power generation with excellent thermal insulation properties. At high temperature, the failure of TBCs will lead to serious problems, so the failure mechanisms is the hotspot of TBCs research. The microcracks caused by thermal stress and the TGO formation and growth will cause the failure of TBCs. The whole failure progress, such as the oxidation of the BC, the TGO growth process, initiation and propagation of the microcracks are reviewed in this paper. The factors led to the final failure are discussed, and the recent research progress on improving the lifetime of TBCs is summarized. In addition, the trend of the failure mechanism of thermal barrier coatings is described.

Key words: thermal barrier coatings, failure, TGO, microcracks, review

CLC Number: 

  • TQ028