【摘要】 用失重法、线性电位扫描、恒流放电对比研究了AZ31和AZ61两种镁合金在MgSO4溶液中的电化学行为。线性电位扫描结果表明,AZ31合金的极化电阻小于AZ61合金,电化学活性优于AZ61合金,说明其自腐蚀速率大于AZ61合金,这与失重法所得结果相一致。在恒流放电中AZ61合金的电极电位更负、更平稳,电流效率也更大,在电池中具有更好的应用价值。更多还原

【Abstract】 The electrochemical behaviors of AZ31 and AZ61 magnesium alloys in MgSO4 solution were investigated by weight-loss,linear sweep voltammetry(LSV) and chronopotentiometry(CP).The results of LSV show that the polarization resistance of AZ61 was larger than the value of AZ31,which indicated AZ61 had smaller corrosion rate,this was consistent with the results from weight-loss method.The results of LSV also indicated that AZ31 was more active than AZ61,but in discharging,the electrode potential of AZ61 was more negative and stable,the anodic efficiency was larger than AZ31,which meant AZ61 was more excellent as anodic material of battery.更多还原