机床液压设备表面喷涂WC-10Co4Cr涂层与性能研究  

WC-10Co4Cr Spraying Coating and Performance on the Surface of Hydraulic Equipment for Machine Tools

作　　者：陶嗣巍[1] 尹忠东[2] 钱芳[3] TAO Siwei;YIN Zhongdong;QIAN Fang(School of Mechanical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028000, China;, Beijing Beijing Forestry University, Beijing 100083;School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110000, China)

机构地区：[1]内蒙古民族大学机械工程学院,内蒙古通辽028000 [2]北京林业大学,北京100083 [3]沈阳理工大学材料科学与工程学院,辽宁沈阳110000

出　　处：《铸造技术》2018年第6期1364-1367,共4页Foundry Technology

摘　　要：采用超音速火焰喷涂法在机床液压设备表面热喷涂了WC-10Co4Cr涂层,并对涂层显微形貌、物相组成、耐磨性能和耐腐蚀性能进行了测试。结果表明,WC-10Co4Cr涂层的物相组成主要为WC、W_2C、Co Cr和Co相;WC-10Co4Cr涂层较为致密、均匀,孔隙率约为0.75%;WC-10Co4Cr涂层的体积损失量约为基体的1/150,表现出优良的抵抗滑动摩擦磨损能力;虽然电镀硬铬可以提升材料的耐腐蚀性能,但WC-10Co4Cr涂层的耐腐蚀性能更加优越,腐蚀速率约为基体材料的2%。The WC-10Co4Cr spraying coating was prepared by supersonic flame thermal spraying on the surface of hydraulic equipment for machine tool, and the microstructure, phase composition, wear resistance and corrosion resistance of the coating were investigated. The results show that the phase of WC-10Co4Cr coating is mainly composed of WC, W2C, CoCr and Co. The volume loss of the WC-10Co4Cr coating is approximately 1/150 of the substrate, which shows excellent resistance to sliding friction and wear resistance. Although hard chromium plating can improve the corrosion resistance of materials, but the corrosion resistance of the WC-10Co4Cr coating is more superior, the corrosion rate is only about 2% of the substrate materials.

关 键 词：超音速火焰喷涂 WC-10Co4Cr涂层 耐磨 耐腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]