【作者】 李颖； 李变晓； 邹文俊； 董企铭； 毛协民；

【Author】 LI Ying~(1,2),LI Bian-xiao~2,ZOU Wen-jun~2,DONG Qi-ming~(1,2),MAO Xie-min~1 (1.Shanghai University,Shanghai 200436,China; 2.Henan University of Technology,Zhengzhou 450007,China)

【机构】 上海大学材料科学与工程学院； 河南工业大学材料科学与工程学院；

【摘要】 使用电刷镀方法制备了Ni基纳米金刚石复合镀层,研究了工作电压、镀液温度、热处理温度、纳米金刚石含量等工艺条件对镀层的硬度、耐磨性的影响。通过金相观测研究了工艺条件对镀层的表面形貌的影响,从而得出制备纳米金刚石/复合镀层的最佳工艺条件。研究表明,在一定的电压范围内,随着刷镀电压的升高镀层表面结晶变细;镀液温度在一定范围内,随着温度升高晶粒细且致密。镀液中纳米金刚石含量为10g/L时,复合镀层显微硬度比镍镀层高1.23倍。纳米金刚石作为硬质颗粒均匀弥散分布在镀层当中,起到弥散强化的作用,从而提高镀层硬度。更多还原

【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:voltage within a certain range,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.更多还原