用电子探针和能谱分析技术，观察了Al-5Zn-005In-01S n-1Mg-03RE阳极中主要析出相的成分,并熔炼了析出相合金.电位测量和腐蚀后铝阳极表面 的电子探针面扫描分析表明：富Sn相为阳极相，富Fe相、富RE相为阴极相；Fe相是铝阳极自 腐蚀微电池中的主要阴极相，温度对析出相的电化学行为有影响.
It was found by EMPA and energy spectrum analysis t hat in Al-5Zn-0.05In-0.1Sn-1Mg-03RE anodes,the segregation phases are Sn phase ,Fe phase and RE phase.According to the average contents of four representative phase points,segregation phase alloys were melted.The potential t ests of segregation phases and EMPA surface scan analysis of corroded aluminum a nodes showed that Sn phase is anodic phase,Fe phase and RE phase are cathodic phases.Cathodic polarization curve of cathodic phases showed that Fe phase is th e main cathodic segregation phase to cause self-corrosion of aluminum anodes,and temperature has influence on the electrochemical performances of segregation ph ases.
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