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研究了Ti－1100高温钛合金表面溅射NiCrAlY涂层对钛合金在600℃～800℃空气中氧化性能的影响。结果表明：由于在涂层表面形成均匀连续的Al2O3保护膜而显著改善了高温钛合金的抗氧化性，涂层本身的微晶组织使其具有良好的抗剥落能力。但在800℃时，基体中少量Ti扩散到涂层表面形成TiO2，同时涂层中的Ni强烈向基体扩散，在基体和涂层中分别形成扩散带和空洞。在循环氧化条件下，空洞的数量和Ni，Ti元素的扩散程度增加，从而损害了涂层的抗氧化性。
The effect of NiCrAlY coating sputtered on the surface of Ti-1100 high temperature titanium alloy on the oxidation performance of titanium alloy in air at 600 ℃ ~ 800 ℃ was studied. The results show that the microcrystalline structure of the coating itself has good anti-spalling ability because the oxidation resistance of the high-temperature titanium alloy is significantly improved by forming a uniform and continuous Al2O3 protective film on the surface of the coating. However, at 800 ℃, a small amount of Ti in the matrix diffuses to the surface of the coating to form TiO2. At the same time, Ni in the coating diffuses strongly to the matrix, forming diffusion bands and voids in the matrix and coating, respectively. Under the cyclic oxidation conditions, the number of voids and the diffusion of Ni and Ti elements increase, thus impairing the oxidation resistance of the coating.