LIU Yongbao, LIU Jianhua, YU Youhong, HE Xing, LIU Li. Review of hot corrosion of thermal barrier coatings of gas turbine[J]. Chinese Journal of Ship Research, 2017, 12(2): 107-115. doi: 10.3969/j.issn.1673-3185.2017.02.014
Citation: LIU Yongbao, LIU Jianhua, YU Youhong, HE Xing, LIU Li. Review of hot corrosion of thermal barrier coatings of gas turbine[J]. Chinese Journal of Ship Research, 2017, 12(2): 107-115. doi: 10.3969/j.issn.1673-3185.2017.02.014

Review of hot corrosion of thermal barrier coatings of gas turbine

doi: 10.3969/j.issn.1673-3185.2017.02.014
  • Received Date: 2016-07-25
    Available Online: 2017-03-13
  • Publish Date: 2017-04-01
    © 2017 The Authors. Published by Editorial Office of Chinese Journal of Ship Research. Creative Commons License
    This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • The review was done in order to make clear the problem of the hot corrosion of the Thermal Barrier Coatings (TBCs) during gas turbine serving. This paper summarizes the factors resulting from the hot corrosion of TBCs during turbine service and classifies methods for enhancing the corrosive resistance of TBCs. A prospective methodology for improving corrosion resistance is also formulated. The main types of corrosion coating include phase reaction, oxidizing of the bond coating, salt-fog corrosion, CMAS corrosion and fuel impurity corrosion. So far, methods for improving the corrosion resistance of TBCs include developing new coating materials, anticorrosive treatment on the surface of TBCs, modifying the stacking configuration and improving the cleansing functions of the gas turbines. In the future, developing new materials with excellent performance will still be the main direction for boosting the improvement of the hot corrosion resistance of TBCs. Simultaneously, improving the tacking configuration and nanotechnology of TBC coatings are potential approaches for improving corrosion resistance. With the development of a Ceramic Matrix Composite (CMC), the focus of the hot corrosion of TBCs may turn to that of Environmental Barrier Coatings (EBCs).
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