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通过电沉积的方法制备了Al/Pb-0.3wt%Ag-0.01wt%Co和Al/Pb-0.3wt%Ag复合阳极材料。通过阳极极化曲线,循环伏安曲线和塔菲尔曲线技术研究了复合阳极材料在50g/L Zn2+,150g/L H2SO4溶液体系下的电化学行为。通过扫描电子显微镜和能谱技术分析测试了表面微观结构。结果表明钴的引入可以降低阳极析氧电位,并提高阳极耐腐蚀性。与铸造的Pb-0.3wt%Ag合金相比,复合阳极Al/Pb-0.3wt%Ag和Al/Pb-0.3wt%Ag-0.01wt%Co的表面氧化层更加致密,晶粒更加细小。
Al / Pb-0.3wt% Ag-0.01wt% Co and Al / Pb-0.3wt% Ag composite anode materials were prepared by electrodeposition. The electrochemical behavior of the composite anode materials in 50g / L Zn2 + and 150g / L H2SO4 solutions was studied by anodic polarization curve, cyclic voltammetry and Tafel curve technique. The surface microstructure was tested by scanning electron microscopy and spectroscopic techniques. The results show that the introduction of cobalt can reduce the anodic oxygen evolution potential, and improve the anode corrosion resistance. The surface oxide layers of the composite anode Al / Pb-0.3wt% Ag and Al / Pb-0.3wt% Ag-0.01wt% Co are denser and the grains are finer than the cast Pb-0.3wt% Ag alloy.