In recent years

with the rapid development of aviation and marine industry

engine blades with the advantages of high temperature resistance

long life and corrosion resistance have become important parts of the development of a new generation of aero engines and turbine engines. Thermal barrier coating (TBCs) is a commonly used thermal protection technology to provide thermal insulation for the metal substrate of the engine blade part

protecting it from hot gases and corrosive media. But on the other hand

the higher operating temperature of the engine makes the blades and their surface TBCs suffer from serious environmental sediment corrosion

resulting in premature failure

and the corrosion types mainly include thermal corrosion

CMAS corrosion

molten salt corrosion

etc. Corrosion has become a problem that limits the operating temperature and service life of TBCs

and anti-corrosion protection is the focus of research in the field of TBCs. In this paper

the main characteristics of TBCs dominated by Yttria-stabilized zirconia (YSZ) are briefly described

and then the reaction mechanism of different corrosion of TBCs is briefly described

focusing on the influence relationship between coating microstructure design

gradient coating design

coating component modification and doping modification and coating corrosion

and the characteristics between TBCs modification method and coating corrosion are expounded. Several methods for future coating improvement and protection are proposed

and finally the application of TBCs in ultra-high temperature environment and the development direction of corrosion protection are prospected.