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对功能梯度材料的热障涂层进行了单面热震试验 ,经过观察分析发现 ,热震后的涂层中有大量的裂纹出现 ,包括与轴向平行的龟裂纹和水平方向裂纹 ,特殊现象是在纯氧化锆层与80 %氧化锆层的界面上方大约 80μm处出现水平裂纹。裂纹都是气孔连通造成的
The single-side thermal shock test of the thermal barrier coating with functionally graded material was carried out. After observation and analysis, a large number of cracks appeared in the thermal shock coating, including cracked cracks and horizontal cracks parallel to the axial direction, The phenomenon is that horizontal cracks appear at about 80 μm above the interface of the pure zirconium oxide layer and the 80% zirconium oxide layer. Cracks are caused by the pores connected