The boat coating of HY5 prepared by arc ion plating was deposited on DD32 alloy substrate. The surface were treated by vibratory polished (VS) and grit-blasted

and then YSZ was deposited on the bond coating by EB-PVD. The microstructures of the bond coating by different surface treatments were investigated. The oxidation resistance of TBCs was measured and compared. Furthermore

effects of surface on interface elementary composition and failure characteristic were studied. The results indicate that both surface treatments can improve the bond coating surface and lead to better oxidation resistance. Compared with TBCs treated by vibratory polished (VS) and grit-blasted

the scale morphology was uniformon flat surfaces. After high temperature oxidation

wrinkling appeared on TGO with rough interface.