含Ce化学沉积Co-Ni-B合金电化学行为的研究  

Study on Electrochemical Characteristics of Electroless Co-Ni-B Alloy with Cerium

作　　者：冯书争[1] 宣天鹏[1] 琚正挺[1] 朱云丽[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《金属功能材料》2006年第3期17-19,共3页Metallic Functional Materials

基　　金：国家自然科学基金资助项目(50371023)

摘　　要：研究了稀土元素Ce对化学沉积Co-Ni-B合金成分和电化学行为等的影响,利用等离子光谱仪分析了沉积层的化学组成,在电子天平上测定了合金的沉积速度,使用LK988Ⅱ型电化学分析系统测定了化学沉积过程阴极极化曲线和循环伏安曲线。结果表明,在水溶液中稀土元素Ce可以与钴基合金实现共沉积,且随着镀液中Ce的浓度的增大,合金镀层中Ce、Co和Ni的含量逐渐升高,B含量降低;且Ce在一定范围内能够明显提高合金的沉积速度;稀土还使Co-Ni-B合金的析出电位发生了正移,减小了极化度。The effect of rare earth element cerium on composition and electrochemical characteristics of electroless Co- Ni-B alloy was studied. The alloying component was analysed using ICP. The plating rate was measured by electronic balance. The cathode polarization curves and cyclic voltammograms during the electroless deposition were tested by LK998 Ⅱ model electrochemical analytical system. The results show that the rare earth element C.e can codeposit with cobalt-base alloy, and with increase of mass added of Ce in solution, the content of Co, Ni, Ce in alloy increases and the content of B decreases. Ce can increase plating rate of alloy in some range of content. The rare earth makes deposition potential rove in positive direction and polarizability decrease.

关 键 词：稀土元素 化学沉积 Co-Ni-B合金 阴极极化 

分 类 号：TG174.3[金属学及工艺—金属表面处理]