电沉积铅银合金阳极与铸造铅银合金阳极的性能  

Comparison of Performance of Electrodeposited Lead-Silver Anode and Cast Lead-Silver Alloy Anode

作　　者：周松兵[1] 郭忠诚[1,2] 陈步明[1,2] 黄茜[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]昆明理工恒达科技有限公司,云南昆明650106

出　　处：《材料保护》2013年第8期8-11,共4页Materials Protection

基　　金：国家自然科学基金项目(51004056);云南省应用基础研究基金项目(2010ZC052)资助

摘　　要：为了得到性能好、成本低的电解锌用阳极材料,在铝片表面电沉积铅、银制备了电沉积Pb-0.8%Ag合金阳极,采用坚膜浇注法制备了传统的铸造Pb-0.8%Ag合金阳极。采用恒电流极化,循环伏安曲线,交流阻抗、X射线衍射及扫描电镜对比研究了2种阳极的电化学性能、结构及形貌。结果表明:与铸造Pb-0.8%Ag合金电极相比,电沉积Pb-0.8%Ag合金阳极的阳极膜更均匀致密、更稳定,表面形成的PbO2量更多,耐蚀性和导电性更好,表面形貌更加致密和均匀。Pb-0. 8% Ag anode was prepared on the surface of Al substrate by electrodeposition. In the meantime,conventional Pb0. 8% Ag alloy anode for a comparative study was also prepared by casting. The electrochemical properties,microstructure and morphology of as-prepared Pb-Ag anodes were comparatively investigated based on measurements of galvanostatic polarization curves,cyclic voltammetry curves and electrochemical impedance spectra as well as X-ray diffraction analysis and scanning electron microscopic observation. Results showed that,as compared with conventional cast Pb-0. 8% Ag alloy anode,electrodeposited Pb 0. 8% Ag alloy anode was more compact and uniform,and contained a higher content of PbO 2,while it possessed better corrosion resistance and electric conductivity as well.

关 键 词：电沉积Pb-0 8%Ag合金阳极 铸造Pb-0 8%Ag合金阳极 电化学性能 耐蚀性 导电性 

分 类 号：TQ153.2[化学工程—电化学工业]