摘要
在单轨吊摩擦驱动轮常用材料WH60A、Weartuf450、NM450基体上采用等离子弧熔覆Fe-Cr-Nb-Si-Mo合金粉末涂层,制备出A1、A2和A3三种耐磨涂层。采用金相显微镜、X射线衍射仪、显微硬度计和液压万能材料试验机对三种涂层的相组成、摩擦磨损性能及结合强度进行测试分析。结果表明:A1、A2和A3的主要相均为马氏体和各类金属碳化物((Nb,Mo)C,VC,Cr7C3),其中基材WH60A表面的维氏硬度提高了790.4HV0.1,基材Weartuf450和NM450的维氏硬度分别从467.8、493.4HV0.1提高到1002.1、983.3HV0.1,提高了约1倍左右;与另外两种基材相比,Weartuf450表面熔覆层的摩擦因数和磨损率最大。
Three kinds of wear-resistant coatings A1, A2 and A3 were prepared by plasma arc cladding Fe-Cr-Nb-Si-Mo alloy powder coating on the common materials of the monorail crane friction drive wheel WH60A, Weartuf450 and NM450. The composition, friction and wear properties and bonding strength of the three coating phases were tested and analyzed by metallographic microscope, X-ray diffractometer, microhardness tester and hydraulic universal material testing machine. The results show that the main phases of A1, A2 and A3 are martensite and various metal carbides ((Nb,Mo)C,VC,Cr7C3), and the Vickers hardness of the surface of WH60A is increased by 790.4 HV0.1. The hardness of the substrate Weartuf450 and NM450 increased from 467.8, 493.4 HV0.1 to 1 002.1, 983.3 HV0.1, respectively;the friction coefficient and wear rate of the Weartuf450 surface cladding layer are the largest compared with the other two substrates.
作者
邢亚东
高贵军
李鑫鑫
XING Yadong;GAO Guijun;LI Xinxin(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Province Mineral Fluid Controlling Engineering Laboratory,Taiyuan 030024,China;National-local Joint Engineering Laboratory of Mining Fluid Control,Taiyuan 030024,China)
出处
《粉末冶金材料科学与工程》
EI
北大核心
2019年第5期400-405,共6页
Materials Science and Engineering of Powder Metallurgy
