电刷镀Ni/n-SiO_2复合镀层的形貌及摩擦学性能研究  

Study on Morphology and Tribological Properties of Ni/n-SiO_2 Composite Coatings by Brush Plating

作　　者：谭俊[1] 郭文才[1] 徐滨士[1] 杨红军[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072

出　　处：《稀有金属材料与工程》2006年第2期181-185,共5页Rare Metal Materials and Engineering

基　　金：国家自然科学基金重点项目(50235030);装备再制造技术国防科技重点实验室基金项目(51489020104JS9102)

摘　　要：利用脉冲换向电刷镀方法制得了Ni/n-SiO2复合镀层,并对镀层进行了表面形貌观察和分析,测试了镀层的摩擦学性能,与直流工艺条件下的快镍镀层和Ni/n-SiO2复合镀层相比,采用脉冲换向电刷镀工艺得到的Ni/n-SiO2复合镀层,由于脉冲换向电流的细晶强化作用和纳米颗粒的弥散强化作用,镀层致密、晶粒团尺寸细小、硬度高、摩擦系数低,因此耐磨性能更好。Ni/n-SiO2 compositional coatings were electrodeposited by brush-plating with pulse-reverse current. Morphology, hardness, and tribological properties of the coatings were investigated and compared with those of Ni and composite coatings electrodeposited by brush-plating with direct current. The test results obtained indicate that Ni/n-SiO2 composite coatings electrodeposited by brush-plating with pulse-reverse current, because of the pulse-reverse current and the nano powders, possesses the fine crystal grains, high hardness and low friction coefficient, so it is a better wear-resistant coatings.

关 键 词：直流 脉冲换向电流 电刷镀 纳米复合镀层 

分 类 号：TQ153.2[化学工程—电化学工业]