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Author(s): |
Ying Li, School of materials science and engineering, Shanghai University, Shanghai, 2004361, China
Bian-xiao Li, School of materials science and engineering, Shanghai University, Shanghai, 2004361, China
Wen-jun Zou, School of materials science and engineering, Shanghai University, Shanghai, 2004361, China
Qi-ming Dong, School of materials science and engineering, Shanghai University, Shanghai, 2004361, China
Xie-min Mao, School of materials science and engineering, Shanghai University, Shanghai, 2004361, China |
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Abstract: |
Nano-diamond/Ni composite coatings were prepared by brush-plating process. The micro-hardness and wears resistance of composite coatings were investigated by technical condition, which includes the voltage, the temperature of plating solutions, heat treatment temperature, and the content of nano-diamond in plating solutions. Morphology of composite coatings were studied, the optimum process were acquired. The result shows that: within a certain range of voltage, the grain of surface coating become finer with the brushing voltage increasing; with increasing temperature of the plating solutions, the grains of coating surface finer and more compact. The micro-hardness of composite coatings is 1.23 times higher than the general nickel, when the content of nano-diamond in plating solutions is about 10g/L. The nano-diamond as hard particles are dispersed in the coatings, which plays the role of dispersion strengthening, therefore, improves the micro-hardness.
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