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研究了渗铝、Ｃｏ３０Ｃｒ６Ａｌ０．５Ｙ（质量分数，％）和反应溅射Ａｌ２Ｏ３及Ｔｉ５０Ａｌ１０Ｃｒ（摩尔分数，％）涂层对ＴｉＡｌ金属间化合物在９００和１０００℃的循环氧化性能的影响。结果表明：几种涂层均不同程度地提高了ＴｉＡｌ的抗循环氧化性能，其中ＴｉＡｌＣｒ涂层表现出最好的效果。渗铝涂层内出现大量贯穿性裂纹；ＣｏＣｒＡｌＹ涂层和基体之间存在严重的互扩散，形成的孔洞已连成了较大的裂纹，且涂层内出现裂纹；Ａｌ２Ｏ３膜易开裂剥落，提高ＴｉＡｌ的抗循环氧化性能十分有限；而ＴｉＡｌＣｒ涂层表现出好的涂层基材相容性，循环氧化后涂层内没有出现裂纹，涂层－基材结合致密。
The effects of aluminizing, Co30Cr6Al0.5Y (mass fraction), reactive sputtered Al2O3 and Ti50Al10Cr (molar fraction) coatings on the intermetallic compounds of TiAl at 900 and 1000 ℃ Effect of cyclic oxidation performance. The results show that the TiAlCr coating shows the best effect on the cyclic oxidation resistance of TiAl to some extent. A large number of penetrating cracks appeared in the aluminized coating. There was a serious interdiffusion between the CoCrAlY coating and the substrate. The formed pores were connected into larger cracks and cracks appeared in the coating. The Al2O3 film was easy to crack and peel, The anti-cyclic oxidation performance of TiAl is very limited. TiAlCr coating shows good coating-substrate compatibility. No cracks appear in the coating after cyclic oxidation and the coating-substrate combination is dense.