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对两种结构的ＴＢＣｓ试样进行了热震及结合强度测试，并用扫描电镜观察了ＺｒＯ２－８％Ｙ２Ｏ３（ＹＳＺ）面层裂纹的扩展情况。结果表明，梯度结构的ＴＢＣｓ的抗热震性能显著优于非梯度结构的ＴＢＣｓ，ＹＳＺ涂层的剥落与表面裂纹的扩展速率有关。
The thermal shock and bond strength of the two kinds of TBCs were tested. The crack growth of ZrO2-8% Y2O3 (YSZ) coatings was observed by scanning electron microscope. The results show that the thermal shock resistance of gradient TBCs is significantly better than that of non-gradient TBCs. The spalling of YSZ coatings is related to the growth rate of surface cracks.