磁场对Co-Pt-P薄膜结构及耐蚀性的影响  

Effect of Magnetic Field on Microstructure and Corrosion Resistance of Co-Pt-P Film

作　　者：泮珊珊 卢建彪[1] 朱天琪[1] 余云丹[1] 江莉[1] 卫国英[1] 葛洪良[1] 

机构地区：[1]中国计量学院材料科学与工程学院,浙江杭州310018

出　　处：《电镀与环保》2013年第4期1-4,共4页Electroplating & Pollution Control

基　　金：国家自然科学基金(No.20971116,No.21171155);国际科技合作项目(No.0S2012ZR0220);浙江省教育厅科研项目(No.Y201122332)

摘　　要：采用外加垂直磁场的电化学沉积方法制备了Co-Pt-P薄膜。对薄膜的结构及成分进行了分析,并借助电化学检测技术研究了薄膜在质量分数为3.5%的NaCl溶液中的耐蚀性。结果表明:随着磁场强度的增大,Co-Pt-P薄膜表面的晶粒逐渐细化,ε-Co的质量分数增加;薄膜在质量分数为3.5%的NaCl溶液中的自腐蚀电位逐渐正移,电极/溶液界面的双电层电容Cd降低,表面沉积膜电阻Rf和电荷传递电阻Rt增大,自腐蚀电流密度逐渐减小,耐蚀性增强。The Co-Pt-P film was prepared by electrochemical deposition with externally applied perpendicular magnetic field（PMF）.The microstructure and composition of the film were analyzed,and its corrosion resistance in 3.5 % mass fraction NaCl solution was studied with the aid of electrochemical detection technologies.The results show that as PMF intensity increases,the grains on the film surface are gradually refined,and the mass fraction ofε-Co increases;in 3.5% mass fraction NaCl solution,the self-corrosion potential of the film gradually shifts to the positive direction,the double layer capacitance of electrode/electrolyte interface Cdreduces,the resistance of surface deposition film Rfand charge transfer resistance Rt increases,and the self-corrosion current density gradually decreases,thus the corrosion resistance of the film increases.

关 键 词：垂直磁场 Co-Pt-P 磁性薄膜 腐蚀 

分 类 号：TQ153[化学工程—电化学工业]