引用本文:李民， 袁福河， 牛昌安， 张鹏， 史凤岭， 张佳平， 王璐.空心阴极电弧镀NiCrAlY涂层的抗氧化性能[J].中国表面工程,2012,25(2):86~91
LI Min, YUAN Fu-he, NIU Chang-an, ZHANG Peng, SHI Feng-ling, ZHANG Jia-ping, WANG Lu.Oxidation Resistance of the NiCrAlY Coating Prepared by Hollow Cathode Arc Ion Plating Technique[J].China Surface Engineering,2012,25(2):86~91
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空心阴极电弧镀NiCrAlY涂层的抗氧化性能
李民， 袁福河， 牛昌安， 张鹏， 史凤岭， 张佳平， 王璐1,2
1. 驻黎明公司军代表室， 沈阳110043;2. 中航工业沈阳黎明航空发动机（集团）有限责任公司 技术中心， 沈阳 110043
摘要:
采用空心阴极电弧离子镀技术制备NiCrAlY涂层，研究涂层的高温抗氧化性能。结果表明涂层组织致密，与合金结合状态良好。电弧离子镀NiCrAlY涂层在1 100 ℃恒温氧化100 h后增重只有2.22 mg/cm2，在100次循环氧化后仍没有失重现象，其抗恒温氧化和抗循环氧化性能远优于成分相近的超音速火焰喷涂、爆炸喷涂和大气等离子喷涂的NiCrAlY涂层。电弧离子镀NiCrAlY涂层在恒温氧化和循环氧化过程中表面均形成了连续致密、粘附性的氧化铝保护膜。氧化膜没有翘起和剥落现象，涂层组织在氧化后仍然完整致密。热喷涂NiCrAlY涂层在上述氧化过程中则生成了保护性较差的Ni、Cr和Al混合氧化物，并发生了氧化膜剥落，同时有严重的内氧化现象。
关键词:  空心阴极电弧镀  喷涂  涂层  氧化
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Oxidation Resistance of the NiCrAlY Coating Prepared by Hollow Cathode Arc Ion Plating Technique
LI Min, YUAN Fu-he, NIU Chang-an, ZHANG Peng, SHI Feng-ling, ZHANG Jia-ping, WANG Lu1,2
1. The Military Representative Office of Shenyang Liming Engine Manufactory Company, Shenyang 110043;2. Technical Center of Shenyang Liming Aeroengine (Group) Corporation Ltd., AVIC, Shenyang 110043
Abstract:
NiCrAlY coating was deposited by hollow cathode arc ion plating technique, and the oxidation resistance at 1 100 ℃ was studied. The results show that the coating is dense and well adhesive to the nickelbase superalloy substrate. The arc ion plated NiCrAlY coating just increases 2.22 mg/cm2 after isothermal oxidation for 100 h at 1 100 ℃ and loss no weight after 100 cycles of cyclic oxidation at 1 100 ℃, which makes it remarkably superior to high velocity oxygenfuel, Dgun and air plasma sprayed NiCrAlY coatings with similar compositions concerning isothermal and cyclic oxidation resistance at 1 100 ℃. The dense, continuous and adherent alumina oxide scale develops on the arc ion plated coating surface during the isothermal or cyclic oxidation test at 1 100 ℃. In addition, no remarkable delamination and spallation is detected for the alumina scale formed on the arc ion plated NiCrAlY coating and the coating remains intact after oxidation at 1 100 ℃. On the contrary, the thermally spray NiCrAlY coatings suffer severe oxidation damage during tests and produce nonprotective oxide consisting of nickel, chromium and aluminium. Moreover, the oxide films flake and the thermally sprayed coatings are susceptible to significant internal oxidation.
Key words:  hollow cathode arc ion plating  thermal spray  coating  oxidation
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