多弧离子镀NiCrAlY涂层对γ-TiAl氧化行为的影响  

Effect of Arc Ion Plated-NiCrAlY Coating on Oxidation Behavior of γ-TiAl Alloy

作　　者：程玉贤[1,2] 刘莉[1] 王文[2] 王福会[2] 王璐[1] 

机构地区：[1]中航工业沈阳黎明航空发动机(集团)有限责任公司,沈阳110043 [2]中国科学院金属研究所,沈阳110016

出　　处：《中国表面工程》2011年第3期83-88,共6页China Surface Engineering

基　　金：国家自然科学基金(50771100)

摘　　要：文中采用多弧离子镀技术在γ-TiAl合金表面制备了NiCrAlY涂层,用SEM/EDS和XRD等手段研究了该涂层对γ-TiAl合金高温氧化行为的影响。结果表明NiCrAlY涂层在高温下可形成保护性氧化铝膜,显著提高了γ-TiAl的高温氧化抗力。在氧化过程中,NiCrAlY/TiAl涂层体系发生了严重的Ni的内扩散,形成了层状结构的互扩散带。NiCrAlY coating was deposited onto γ-TiAl alloy employing arc ion plating and the oxidation behavior was investigated by SEM/EDS and XRD.The results indicated that NiCrAlY coating can remarkably improve the oxidation resistance of γ-TiAl alloy by forming a protective scale.Serious inward diffusion of Ni from the NiCrAlY coating to γ-TiAl substrate was occurred during oxidation,which resulted in the formation of multi-layered interdiffusion zone.

关 键 词：多弧离子镀 NICRALY Γ-TIAL 氧化 互扩散 

分 类 号：TG174.444[金属学及工艺—金属表面处理]