摩擦辅助喷射电沉积纳米晶镍的电化学腐蚀行为  

Electrochemical Corrosion Behavior of Nanocrystalline Nickel Prepared by Friction Aided Jet Electrodeposition

作　　者：朱军[1] 沈理达[1] 田宗军[1] 刘志东[1] 黄因慧[1] 王桂峰[1] 

机构地区：[1]南京航空航天大学,江苏南京210016

出　　处：《稀有金属材料与工程》2013年第11期2371-2375,共5页Rare Metal Materials and Engineering

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

摘　　要：采用摩擦辅助喷射电沉积工艺和传统喷射电沉积工艺制备纳米晶镍,用TEM对比分析了二者的组织结构,用电化学极化法研究了2种纳米晶镍层在3.5%NaCl(质量分数)溶液及1 mol/L H2SO4溶液中的腐蚀行为。结果表明,摩擦辅助喷射电沉积结晶过程更加均匀,制备的纳米晶镍层组织致密,晶粒细小,平均晶粒达到9.77 nm;在2种腐蚀溶液中,摩擦辅助喷射电沉积制备的纳米晶镍的电化学腐蚀性能均优于传统喷射电沉积;在NaCl溶液中,摩擦辅助喷射电沉积所制纳米晶镍在腐蚀过程中有钝化膜产生。并指出晶粒大小与微观缺陷是影响纳米晶镍耐腐蚀性能的2个重要因素。Nanocrystalline nickel was prepared by friction aided jet electrodeposition and traditional jet electrodeposition.The structure of two Nickel deposition layers was studied by TEM,and the corrosion behavior in 3.5wt%NaCl solution and 1 mol/LH2SO4 solution was studied by electrochemical polarization method.The results show that nano-crystalline nickel prepared by friction aided jet electrodeposition has a compact structure and an average grain size of 9.77 nm.In two corrosion solutions,the electrochemical corrosion resistance of nanocrystalline nickel prepared by friction aided jet electrodeposition can be both better than that prepared by traditional jet electrodeposition.Only nanocrystalline nickel prepared by friction aided jet electrodeposition generates passive film in the corrosion process.The grain size and micro-defects are two important factors that affect the corrosion resistance of nanocrystalline nickel

关 键 词：摩擦 喷射电沉积 纳米晶镍 腐蚀 

分 类 号：TQ153.1[化学工程—电化学工业] TG172.5[金属学及工艺—金属表面处理]