Abstract: The bonding layer was prepared on the surface of GH2747 alloy by atmospheric plasma spray（APS） and high velocity oxy-fuel spraying（HVOF）, respectively, and the ceramic layer was prepared by APS. The thermal cycle life of the bonding layer and the growth of TGO（thermally grown oxide） by different processes were investigated by isothermal thermal cycling and high temperature static oxidation tests. The results show that the densification of the bonding layer prepared with HVOF is larger than that of the bonding layer prepared with APS, and a 0.3 μm-0.4 μm thick Al₂O₃ film is formed on the surface of the bonding layer after 1050 ℃ ×2 h vacuum heat treatment. Comparing the structure composition and TGO thickness of the bonding layer after high-temperature static oxidation, it is concluded that the continuous and dense α-Al₂O₃ on the surface of the bonding layer can effectively slow down the inflow of oxygen, reduce the growth rate of TGO, and inhibit the premature generation of mixed oxides; the internal oxidation rate of the bonding layer with a dense structure is slower, and the antioxidant property of the HVOF bonding layer is stronger than that of the bonding layer prepared by APS. The thickening of TGO and the generation of mixed oxides during thermal cycling are the main factors leading to the coating failure, and the better the antioxidant performance of the binder layer, the greater the thermal cycling life of the coating.