摘要
为了改善机械零件的表面性能,采用氩弧熔覆技术以不同熔覆速度在304奥氏体不锈钢表面进行Co-Mo-Si涂层的合金化处理。通过倒置金相显微镜、显微硬度计、X射线衍射仪、扫描电镜、磨料磨损试验、电化学工作站分别测试了熔覆速度对合金涂层的显微组织、显微硬度、相结构及涂层的耐磨性、耐蚀性的影响。结果表明:采用氩弧熔覆技术可以在304奥氏体不锈钢表面上获得与基体结合良好、组织细密且具有较高硬度和耐蚀性的Co-Mo-Si合金涂层;当熔覆速度为160 mm/min时,Co-Mo-Si合金涂层组织均匀,硬度最大,耐磨性及耐蚀性最佳。
In order to improve the surface property of machine parts, Co-Mo-Si alloy coating was prepared on 304 austenitic stainless steel surface by argon arc cladding with different scanning speeds. The microstructure, micro- hardness and wear resistance of layer coating were observed through the inverted metallurgical microscope, auto turret micro hardness tester, X- ray diffractometer, scanning electron microscope, ML- 10 abrasive wear testing machine and electrochemical workstation. Results showed that the cladding brought about a more refined cladding layer microstructure on 304 austenitie stainless steel, which had the strong adhesion strength, the high hardness and the excellent wear resistance. In addition, when the scanning speed was 160 mm/min, the alloy coating was uniform in structure and had the largest hardness and the best wear and corrosion resistance.
作者
时海芳
鲍亚楠
刘忆
SHI Hal-fang;BAO Ya-nan;LIU Yi(School of Materials Science and Engineering,Liaoning Technical University,Fuxin 123000,China;College of Mechanical and Electrical Engineering,Xuzhou University of Technology,Xuzhou 221000,China)
出处
《材料保护》
CAS
CSCD
北大核心
2018年第8期100-103,共4页
Materials Protection
