EB-PVD热障涂层热循环实验评价方法研究

hermal cycling testing to the eight batches of thermal barrier coatings samples under different holding time has been carried out by means of cycling heating and cooling apparatus simulating TBCs service environment. Using mathematical model of exponential decline fitting thermal cycle experimental data，characterization parameters of static oxidation performance and thermal fatigue performance of thermal barrier coated sample were obtained. The result indicates that static state oxidation performance and thermal fatigue performance of TBCs samples prepared under present experimental technology conditions have different match relation. The estimated value for static state oxidation performance is 677±194 hour, and the estimated value for thermal fatigue performance is 6789±1818 times.