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.
出处
《材料保护》
CAS
CSCD
北大核心
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
