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对Al-Ga-Mg-Mn-Bi阳极合金固溶处理和常温轧制变形,测量不同处理状态下的电化学阻抗谱、极化曲线、自腐蚀速率等,研究固溶和轧制处理对该合金的组织及电化学性能的影响。结果表明:与铸态试样相比,固溶处理减少了铝阳极组织中第二相的数量,较大程度地降低铝阳极的自腐蚀和析氢速率,改善了合金的腐蚀形貌,使恒流放电的电位负移;轧制处理使恒流放电的电位负移,能够明显改善铝阳极的腐蚀形貌。
The solution treatment and the deformation at room temperature of Al-Ga-Mg-Mn-Bi anodic alloy were measured, and the electrochemical impedance spectroscopy, polarization curve and self-corrosion rate under different treatment conditions were measured. Alloy microstructure and electrochemical properties. The results show that, compared with as-cast samples, the solution treatment reduces the number of second phases in the anodic aluminum microstructure, decreases the self-corrosion and hydrogen evolution rate of the aluminum anode to a great extent, and improves the corrosion morphology of the alloy. The potential of the discharge discharge negative shift; rolling process so that the potential of the constant current discharge negative shift, can significantly improve the corrosion morphology of the aluminum anode.