【摘要】 用电子探针和能谱分析技术 ,观察了Al- 5Zn - 0 0 5In - 0 1Sn - 1Mg - 0 3RE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 .更多还原

【Abstract】 It was found by EMPA and energy spectrum analysis that in Al-5Zn-0.05In-0.1Sn-1Mg-0.3RE 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 tests of segregation phases and EMPA surface scan analysis of corroded aluminum anodes 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 the main cathodic segregation phase to cause self-corrosion of aluminum anodes,and temperature has influence on the electrochemical performances of segregation phases.更多还原