Ni-P-α-Al_2O_3纳米复合电镀工艺研究  

Study on the Process of Ni-P-α-Al_2O_3 Nano-composite Electroplating

作　　者：朱福良[1] 朱玉庆[1] 秦瑞焕[1] 陈元锋[1] 

机构地区：[1]兰州理工大学材料科学与工程学院,兰州730050

出　　处：《表面技术》2012年第1期64-66,共3页Surface Technology

基　　金：甘肃省自然科学基金(3ZS042-B25-029);兰州理工大学科研发展基金资助项目(0851)

摘　　要：采用复合电镀技术,在黄铜表面制备高硬度的Ni-P-α-Al2O3纳米复合镀层,研究了阴极电流密度、纳米α-Al2O3添加量、镀液pH值、镀液温度和电镀时间对镀层硬度的影响。结果表明:当镀液温度为45℃,阴极电流密度为4A/dm2,镀液pH值为4.0,电镀时间为40min,镀液中纳米α-Al2O3的质量浓度为10g/L时,所得镀层均匀、细致、平滑,经适当热处理后,显微硬度可达到1 332HV。The high hardness Ni-P-α-Al2O3 nano-composite coatings were prepared on brass substrates with the composite electroplating technology. The effect of cathodic current density, nano-α-Al2O3 content, pH value of plating bath, temperature of plating bath and plating time on the hardness of coatng was studied. The results show that the op- timization conditions are the temperature 45℃, the cathodic current density 4 A/dm^2 , the pH value 4.0 of the bath,the time 40min and nano-α-Al2O3 content 10 g/L. Under these conditions, the coatings are uniform and smooth. After appropriately heating treatment, the microhardness achieves 1 332HV.

关 键 词：Ni—P-纳米Al2O3 纳米复合电镀 显微硬度 

分 类 号：TQ153.1[化学工程—电化学工业]