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利用电刷镀方法在45钢上制备了镍–碳纳米管(CNTs)复合镀层,并对其组织形貌、孔隙率、显微硬度和磨损性能进行了探讨。结果表明,碳纳米管的加入改善了镀层的组织形貌,使得晶粒更加细密、均匀,镀层表面粗糙度更小。当CNTs质量浓度为2g/L时,镀层厚度达到最高,为0.38μm;孔隙率最小,为0.3个/cm2;显微硬度最大,为680HV;磨损质量损失最小,减少量为25.6%。
Nickel - carbon nanotubes (CNTs) composite coatings were prepared on 45 steel by brush plating method. The microstructure, porosity, microhardness and wear resistance of the composites were also investigated. The results show that the addition of carbon nanotubes improves the microstructure of the coating and makes the grains more fine and uniform, and the surface roughness of the coating is smaller. When the concentration of CNTs is 2g / L, the thickness of the coating is the highest, 0.38μm; the porosity is the smallest, 0.3 / cm2; the microhardness is the largest, 680HV; the wear loss is the smallest, the decrease is 25.6%.