摘要
为了提升8Cr4Mo4V钢表面的减摩耐蚀性能,利用真空磁控溅射镀膜技术,在单晶硅P(111)、8Cr4Mo4V钢表面分别制备了WC_(x)和CrN/WC_(x) 2种涂层。采用扫描电子显微镜(SEM)观察了涂层截面形貌,采用UMT高温摩擦磨损试验机、台阶仪、纳米压痕仪、电化学工作站和盐雾试验机分别研究了8Cr4Mo4V钢和2种涂层的摩擦磨损性能、硬度和弹性模量、电化学腐蚀性能和耐盐雾腐蚀性能。结果表明:涂层截面结构致密均匀,涂层的增加使8Cr4Mo4V钢的摩擦系数降低至0.20以下,磨损率降低2~3个数量级,纳米硬度提高3倍以上,弹性模量降低24%左右,电化学腐蚀降低1个数量级,耐盐雾性能明显提升,涂层起到了很好的保护基材的作用。
For improving the anti-friction and corrosion resistant of 8Cr4Mo4V steel surface,WC_(x)and CrN/WC_(x)two coatings were deposited on silicon P(111)and 8Cr4Mo4V steel by vacuum magnetron sputtering coating technology,respectively.Scanning electron microscopy(SEM)was used to observe the cross-section morphology of the coatings,and the friction and wear properties,hardness and elastic modulus,electrochemical corrosion properties and salt spray corrosion resistance of 8Cr4Mo4V steel and the two coatings were studied by the means of UMT high temperature friction and wear tester,step tester,nano-marker,electrochemical workstation and salt spray tester.Results showed that the cross-section structure of the coating was compact and uniform,and the coating enabled that the friction coefficient of 8Cr4Mo4V steel reduced to less than 0.20,the wear rate declined by 2~3 orders of magnitude,the nano-hardness increased by more than 3 times,the elastic modulus decreased by about 24%,the electrochemical corrosion was reduced by 1 order of magnitude,and the salt spray resistance was obviously improved.Thus,the coating played a good role in protecting the substrate.
作者
高春月
郭武明
王海新
王宇蓬
蒲吉斌
GAO Chun-yue;GUO Wu-ming;WANG Hai-xin;WANG Yu-peng;PU Ji-bin(AECC Harbin Bearing Co.,Ltd.,Harbin 150000,China;Key Laboratory of Marine Materials and Related Technologies,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Key Laboratory of Marine Materials and Protective Technologies of Zhejiang,Ningbo 315201,China)
出处
《材料保护》
CAS
CSCD
2021年第9期20-24,共5页
Materials Protection
作者简介
通信作者:郭武明(1987-),硕士,工程师,主要从事特殊环境下PVD涂层工艺的开发及表面工程应用研究,E-mail:guowuming@nimte.ac.cn。
