摩擦喷射电沉积钴的微观形貌和硬度  

Micro-morphology and Hardness of Cobalt Coatings via Friction Aided Jet Electrodeposition

作　　者：张磊[1] 沈理达[1] 刘志东[1] 朱军[1] 马云[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《材料科学与工程学报》2013年第2期243-247,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金(青年基金)资助项目(51105204);教育部博士点基金资助项目(20113218120022);南京航空航天大学青年科技创新基金资助项目)NS2011009)

摘　　要：本试验在不同的工艺参数下,分别用常规喷射电沉积以及摩擦喷射电沉积技术在石墨基底上制备钴沉积层,并对样件进行硬度检测以及微观形貌观察。结果表明,两种试验条件下,沉积层硬度随电流密度的增加均呈先增后减趋势并随着阴极转速的增大而增高,摩擦条件下的沉积层硬度相对更高(最大硬度值为581HV)。此外,硬质粒子机械摩擦工艺下的晶粒的沉积堆叠过程发生了改变,表层由岛状突起变为均匀沉积。Cobalt coatings on graphite substrates were prepared by conventional jet electrodeposition and friction aided jet electrodeposition. Their surface micrograph and micro-hardness were gtudied by SEM and micro hardness tester, respectively. Under the two experimental conditions, the hardness of cobalt coatings increases and then decreases with increasing average current density, and simply goes up when the cathode rotation speed increases. However, the friction aided coatings exhibit even higher microhardness, the highest micro-hardness of which reached 581Hv. In addition, the deposition layers change from island growth to uniform deposition.

关 键 词：喷射电沉积 摩擦 钴 硬质粒子 硬度 

分 类 号：TG662[金属学及工艺—金属切削加工及机床] TQ153[化学工程—电化学工业]