A duplex composite coating consisting of electrodeposited SiO₂ interlayer and glass-ceramic coating was fabricated on TiAl alloy. The oxidation behavior of the composite coating was studied in air at 1000 °C. The composition, morphology, and microstructure of the oxide scale were investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS). Results showed that the composite coating exhibited outstanding resistance against high temperature oxidation. After 100 h oxidation, no scale spallation was observed and the weight gain was only 1.16 mg cm⁻². The inward diffusion of oxygen and outward diffusion of Ti were efficiently prevented. A continuous and adherent Al₂O₃ layer was formed at the coating/substrate interface. The electrodeposited SiO₂ interlayer could improve the adhesion between the substrate and glass-ceramic coating.

在TiAl合金上制备了由电沉积SiO ₂夹层和玻璃陶瓷涂层组成的双相复合涂层。研究了复合涂层在 1000 ℃空气中的氧化行为。通过X射线衍射（XRD）、扫描电子显微镜（SEM）和能量色散谱（EDS）研究氧化皮的组成、形貌和微观结构。结果表明，复合涂层表现出优异的抗高温氧化性能。氧化 100 小时后，没有观察到水垢散裂，重量增加仅为 1.16 mg cm ^-2。有效地防止了氧的向内扩散和钛的向外扩散。连续和粘附的 Al ₂ O ₃在涂层/基材界面处形成层。电沉积SiO ₂夹层可以提高基体与微晶玻璃涂层之间的附着力。