Overview of thermal barrier coatings for advanced gas turbine engine

Thermal barrier coatings (TBCs) are considered as one of the three key technologies of the advanced gas turbine engine hot-end parts. Yttria-stabilized zirconia (YSZ) is now extensively used as a ceramic topcoat in TBC systems. However, 8YSZ/MCrAlY cannot be used for next-generation aeroengine due to its limitation in high-temperature capabilities and thermal barrier performances. In this paper, the research progress of the TBC involving TBC bond coat, ceramic coat, and preparation methods in recent years is summarized, and the future challenges and development trends of the TBC are prospected.