One is the traditional TBC wi th Ni22Cr10AlY as bond co at and ZrO 2-8wt%Y 2 O 3 (8YSZ)as top coat,the other two TBCs have a t riplex structure with comp osite layers of 8YSZ +Al 2 O 3 and ZrO 2 ,respectively.

• 传统TBCs结构为Ni22Cr10AlY合金连接层和8%25Y2O3部分稳定的ZrO2(8YPSZ)陶瓷顶层;