高级检索
    杨晓旭, 张敏, 黄野, 胡小刚, 潘玉丽, 程世红, 杜木, 丁永文. 纳米SiC/Ni复合镀层的制备及其摩擦磨损性能[J]. 机械工程材料, 2014, 38(7): 53-57.
    引用本文: 杨晓旭, 张敏, 黄野, 胡小刚, 潘玉丽, 程世红, 杜木, 丁永文. 纳米SiC/Ni复合镀层的制备及其摩擦磨损性能[J]. 机械工程材料, 2014, 38(7): 53-57.
    YANG Xiao-xu, ZHANG Min, HUANG Ye, HU Xiao-gang, PAN Yu-li, CHENG Shi-hong, DU Mu, DING Yong-wen. Preparation and Friction and Wear Resistance of SiC/Ni Nano-Composite Coatings[J]. Materials and Mechanical Engineering, 2014, 38(7): 53-57.
    Citation: YANG Xiao-xu, ZHANG Min, HUANG Ye, HU Xiao-gang, PAN Yu-li, CHENG Shi-hong, DU Mu, DING Yong-wen. Preparation and Friction and Wear Resistance of SiC/Ni Nano-Composite Coatings[J]. Materials and Mechanical Engineering, 2014, 38(7): 53-57.

    纳米SiC/Ni复合镀层的制备及其摩擦磨损性能

    Preparation and Friction and Wear Resistance of SiC/Ni Nano-Composite Coatings

    • 摘要: 用电沉积方法在316L不锈钢表面制备了纯镍镀层和纳米SiC/Ni复合镀层, 考察了电镀时间、SiC质量浓度、电流密度和镀液温度对复合镀层中纳米SiC含量的影响, 表征了镀层的表面形貌和SiC纳米颗粒的尺寸; 最后研究了镀层的摩擦磨损性能。结果表明: 复合镀层中纳米SiC的含量随着电镀时间延长、电流密度增大、镀液温度升高以及SiC质量浓度的增大先升高后降低, 且最佳工艺参数为电镀时间30 min, SiC质量浓度20 g·L-1, 电流密度2 A·dm-2, 镀液温度60 ℃, 镀液pH4.5, 搅拌速度300 r·min-1; 与纯镍镀层相比, 纳米SiC/Ni复合镀层的晶粒更细小, 组织更致密, 具有更好的摩擦磨损性能, 摩擦因数降低了7%以上, 磨损率降低了50%。

       

      Abstract: Pure nickel coating and SiC/Ni nano-composite coatings were prepared on 316L stainless steel surface by electro-deposition method. The influences of plating time, SiC mass concentration, current density and temperature of plating bath on the SiC content in the composite coatings were studied. The surface morphology of the coatings and the size of SiC nano-particulates were characterized. The friction and wear properties of the the coatings were investigated. The results show that SiC contents in the composite coating first increased and then decreased with increasing the plating time, current density, SiC concentration and temperature of the plating bath; and the optimal technological parameters were as follows: plating time of 30 min, SiC concentration of 20 g·L-1, current density of 2 A·dm-2, bath temperature of 60 ℃, pH of 4.5, stirring rate of 300 r·min-1. The grain size of SiC/Ni nano-composite coatings was smaller than that of the pure nickel coating. Comparing with the pure nickel coating, Ni-SiC nano-composite coatings had better friction and wear resistance, and its friction coefficient and wear rate were reduced by more than 7% and 50%, respectively.

       

    /

    返回文章
    返回