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本文测定了铝合金NO.3在高氯酸铝体系中的恒电位极化曲线和负差异效应。以便研究高氯酸铝浓度、溶液PH、以及添加剂对其阳极行为的影响。为了对比,我们也测定了纯铝(99.7%)和铝合金NO.4.5在一条定件下的恒电位极化曲线和负差导效应。实验结果表明,高氯酸根离子对铝合金电极起着腐蚀离子和缓蚀离子的双重作用。初步提出,铝合金电极在高氯酸铝溶液中的阳极腐蚀。可能是竞争吸附机理。并指出铝合金电极在添加三氯化铬的溶液中具有优良的电性能。因此,三氯化铬可能成为高氯酸铝体系Al—MnO_2干电池的较好添加剂。
In this paper, the constant potential polarization curve and the negative difference effect of aluminum alloy NO.3 in aluminum perchlorate system were measured. To study aluminum perchlorate concentration, solution pH, and the effect of additives on its anode behavior. For the sake of comparison, we also measured the potentiostatic polarization curves and the negative differential conductance effects of pure aluminum (99.7%) and aluminum alloy NO.4.5 under a fixed part. The experimental results show that perchlorate ion plays the dual role of corrosion ions and corrosion ions on aluminum alloy electrode. Anodic corrosion of aluminum alloy electrode in aluminum perchlorate solution was initially proposed. May be a competitive adsorption mechanism. It is also pointed out that the aluminum alloy electrode has excellent electrical properties in the solution of adding chromium trichloride. Therefore, chromium trichloride may become a better additive for Al-MnO 2 dry-cell of aluminum perchlorate system.