（1.商丘工学院机械工程学院，河南 商丘 476000；2.苏州智绿环保科技有限公司，江苏 苏州 215200）
摘要：采用复合电刷镀工艺在2Cr13 不锈钢基材上制备了Ni–W–纳米MoS2 复合镀层。采用扫描电镜、显微硬度计和摩擦磨损试验机对镀层微观形貌、显微硬度和耐摩擦磨损性能进行分析。结果表明：与Ni–W 合金镀层相比，Ni–W–纳米MoS2 复合镀层的表面更加平整、致密，显微硬度较低，耐摩擦磨损性能较优。随镀液中MoS2 纳米颗粒质量浓度的增大，复合镀层的摩擦因数小幅下降，磨损量先降后升。当镀液含20 g/L MoS2 时，所得Ni–W–纳米MoS2 复合镀层的综合性能最优。
文章编号：1004 – 227X (2019) 07 – 0301 – 04
Microstructure and friction wear resistance of electro-brush plated nickel–tungsten–molybdenum disulfide composite coating // LI Jin-zhan, YUAN Qing-long*, GUAN Hong-yan, DU Xin-lei, ZHANG Han-shan
Abstract: Ni–W–nano-MoS2 composite coatings were obtained on 2Cr13 stainless steel substrate by composite electro-brush plating. The microscopic morphology, microhardness, and friction wear resistance of the coatings were examined using scanning electron microscope, microhardness tester, and friction wear tester, respectively. The results showed that Ni–W–nano-MoS2 composite coating was more uniform and compacter than Ni–W alloy coating, and the former had a higher microhardness and better friction wear resistance than the latter. The microhardness of the composite coating was decreased slightly, while its wear weight loss was decreased initially and then increased with the increasing of mass concentration of MoS2 nanoparticles in the plating bath. The Ni–W–nano-MoS2 composite coating obtained from the bath containing 20 g/L MoS2 had the best comprehensive properties.
Keywords: nickel–tungsten alloy; molybdenum disulfide; composite coating; electro-brush plating; microstructure;microhardness; friction wear
First-author’s address: School of Mechanical Engineering, Shangqiu Institute of Technology, Shangqiu 476000, China