Effects of surface roughness of substrate on properties of Ti/TiN/Zr/ZrN multilayer coatings  

基体材料表面粗糙度对Ti/TiN/Zr/ZrN多层膜性能的影响（英文）

作　　者：林松盛[1,2] 周克崧[1,2] 代明江[1,2] 胡芳[2] 石倩[2] 侯惠君[2] 韦春贝[2] 李福球[2] 佟鑫[2] 

机构地区：[1]华南理工大学材料科学与工程学院,广州510641 [2]广东省工业技术研究院(广州有色金属研究院)新材料研究所,广州510650

出　　处：《Transactions of Nonferrous Metals Society of China》2015年第2期451-456,共6页中国有色金属学报（英文版）

基　　金：Project(2011B050400007)supported by the International Cooperation Program of Guangdong Province,China

摘　　要：Ti/TiN/Zr/ZrN multilayer coatings were deposited on Cr_17Ni_2 steel substrates with different surface roughnesses by vacuum cathodic arc deposition method. Microstructure, micro-hardness, adhesion strength and cross-sectional morphology of the obtained multilayer coatings were investigated. The results show that the Vickers hardness of Ti/TiN/Zr/ZrN multilayer coating, with a film thickness of 11.37 μm, is 29.36 GPa. The erosion and salt spray resistance performance of Cr_17Ni_2 steel substrates can be evidently improved by Ti/TiN/Zr/ZrN multilayer coating. The surface roughness of Cr_17Ni_2 steel substrates plays an important role in determining the mechanical and erosion performances of Ti/TiN/Zr/ZrN multilayer coatings. Overall, a low value of the surface roughness of substrates corresponds to an improved performance of erosion and salt spray resistance of multilayer coatings. The optimized performance of Ti/TiN/Zr/ZrN multilayer coatings can be achieved provided that the surface roughness of Cr_17Ni_2 steel substrates is lower than 0.4μm.采用真空阴极电弧沉积技术,在4组表面粗糙度不同的Cr17Ni2钢基体上制备Ti/Ti N/Zr/Zr N多层膜。采用扫描电镜、X射线衍射仪、显微硬度计、结合力划痕仪、砂粒冲刷试验仪和盐雾试验机分析测试多层膜的截面形貌、膜层厚度、相组成、硬度、膜/基结合力、抗砂粒冲刷性能和耐腐蚀性能等。结果表明:所制备的多层膜厚度为11.37μm,维氏硬度为29.36 GPa;多层膜能显著地提高Cr17Ni2钢基体的抗砂粒冲刷和耐盐雾腐蚀能力;基体材料表面粗糙度对膜层性能的影响很大,基体表面粗糙度越小,其膜/基结合力、抗砂粒冲刷性能和耐盐雾腐蚀性能越佳;为了获得具有良好综合性能的膜层,待表面处理的基体表面粗糙度必须控制在Ra<0.40μm。

关 键 词：Ti/TiN/Zr/ZrN multilayer coatings surface roughness sand erosion resistance corrosion resistance vacuum cathodicarc deposition TIN ZRN 

分 类 号：TG174.4[金属学及工艺—金属表面处理]