Progress of Research on Failure Mechanism and Life Prediction of Atmospheric Plasma Sprayed Thermal Barrier Coatings

A review is provided of the progress of research about the failaure mechanism and life prediction of atmospheric plasma sprayed( APS) thermal barrier coatings(TBCs). The effects of high-temperature oxidation,thermal cycling,and creep on the service life of TBCs are introduced. It is pointed out that,along with gradually increasing inlet temperature of turbine,the TBCs are liable to peeling off under the impact of various factors,which severely influences the service life of TBCs. This is why much attention is being increasingly placed on the failure mechanism of TBCs. Moreover,suggestions are also given about the development trend of TBCs.