TiAlN/Cr、TiAlN/CrN和TiAlN/CrAlN多层涂层的热盐腐蚀行为  

Hot salt corrosion behavior of TiAlN/Cr、TiAlN/CrN and TiAlN/CrAlN multilayer coatings

作　　者：何泽年 王顺花 蒲吉斌 HE Ze-nian;WANG Shun-hua;PU Ji-bin(School of Materials Science and Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Key Laboratory of Marine Materials and Related Technologies,Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]兰州交通大学材料科学与工程学院,甘肃兰州730070 [2]中国科学院宁波材料技术与工程研究所,海洋新材料与应用技术重点实验室,浙江宁波315201

出　　处：《兰州理工大学学报》2023年第4期1-10,共10页Journal of Lanzhou University of Technology

基　　金：国家重点研发计划(2020B2010401YF)。

摘　　要：钛合金的热盐腐蚀问题已引起人们的广泛关注,金属氮化物防护涂层是延长钛合金服役寿命的有效途径.采用多弧离子镀技术在钛合金表面沉积了TiAlN/Cr涂层、TiAlN/CrN涂层、TiAlN/CrAlN-5涂层和TiAlN/CrAlN-10涂层.通过扫描电子显微镜(SEM)、能量色散谱仪(EDS)、X射线衍射仪(XRD)、划痕测试仪、3D激光显微镜等测试手段对比研究了4种多层涂层的热盐腐蚀行为,分析了涂层热盐腐蚀前后的微观形貌和物相成分.结果表明:Al元素的添加和调制周期的优化可以提高涂层的致密性,改善涂层表面质量.其中TiAlN/CrAlN-10多层涂层由于界面密度高,表现出优异的耐热盐腐蚀性能.The hot salt corrosion of titanium alloys has attracted extensive attention.Metal nitride protective coating is an effective way to extend the service life of titanium alloys.In this study,the TiAlN/Cr coating,TiAlN/CrN coating,TiAlN/CrAlN-5 coating and TiAlN/CrAlN-10 coating were deposited on titanium alloy surface by Multi-arc Ion Plating technology.The differences in hot salt corrosion behavior of four kinds of multilayer coatings were compared by Scanning Electron Microscope(SEM),Energy Dispersion analyzer(EDS),X-ray diffractometer(XRD),Scratch tester and 3D Laser Microscope.Meanwhile,the microstructure and phase composition of the coatings were analyzed before and after hot salt corrosion.The results indicated that the addition of Al element and the optimization of modulation period can improve the surface quality of the coating.Among them,TiAlN/CrAlN-10 multilayer coating shows excellent heat resistance to salt corrosion due to its high interface density.

关 键 词：热盐腐蚀 TiAlN/CrAlN涂层 界面密度 耐腐蚀性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]