YSZ(mass fraction of 12% Y2O3 stabilized Zr O2), Al2O3 insulating multilayered thin film was fabricated on nickel base alloy substrate by electron beam evaporation,RF magnetron sputtering, plasma spraying and etc. The insulating properties of the multilayered thin films from room temperature to 800 ℃ were studied, as well as the effects of annealing at high temperature on the crystal structure and surface morphology of insulation layer. The results show that the multilayered thin film of crystalline YSZ/amo...