Articles
  • A review on the failure behavior and countermeasures of thermal barrier coatings

  • Jiahang Liua, Zhe Lua,*, Yanwen Zhoua, Jing Zhangb and Guanlin Lyuc

  • aSchool of Materials and Metallurgical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
    bDepartment of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 6202, USA
    cKey Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Thermal barrier coatings are widely used in high-temperature components in aircraft thrusters, power generation, and marine engines, enabling gas turbines to operate at elevated temperatures for extended periods by reducing the superalloys' surface temperature. During service, high-temperature oxidation, hot corrosion, and sintering occur inside the thermal barrier coatings, resulting in changes in the macro and microstructure of the coatings, and thermal-mechanical properties degradation, eventually leading to coating failure. The main factors that lead to the failure of thermal barrier coatings and affect the life of thermal barrier coatings are reviewed, including the formation of thermally grown oxides on the surface of the bond coat, the corrosion caused by the deposits on the surface of the coating and the sintering of the high-temperature ceramic layer, and the failure mechanism of the coating is analyzed. The countermeasures to prolong the service life of coatings are reviewed from thermal barrier coating materials, coating structure, coating preparation methods, and post-treatment


Keywords: Thermal barrier coatings, Failure behavior, Countermeasures, Bond coat, Ceramic layer

This Article

  • 2023; 24(2): 285-307

    Published on Apr 30, 2023

  • 10.36410/jcpr.2023.24.2.285
  • Received on Aug 31, 2022
  • Revised on Sep 22, 2022
  • Accepted on Nov 17, 2022

Correspondence to

  • Zhe Lu

  • School of Materials and Metallurgical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
    Tel : +8615941242356

  • E-mail: lz19870522@126.com