目前,鲜见研究杂质元素含量对铝合金牺牲阳极性能影响的报道.浇铸了不同Si含量的Al-5.00Zn-0.02In-1.00Mg-0.05Ti-xSi-0.10Fe-0.01Cu(质量分数,％)铝合金阳极.采用电化学方法、电感耦合等离子体质谱仪(ICP-MS)和金相显微镜对不同Si含量阳极在海水中的形貌、Al,Zn元素溶解量及电化学性能进行了研究.结果表明:Si的加入改善了铝合金的组织均匀性,Al-5.00Zn-0.02In-1.00Mg-0.05Ti-0.09Si(％)铝合金中的等轴晶较多,阳极表面溶解均匀,电流效率达到92％以上;该合金阳极在0.1 mol/L NaCl溶液中浸泡2h后的Al和Zn溶解量分别为23.00,4.40 g/L,在由海水和Ⅺ组成的溶液中浸泡2,48 h后的扫描电流峰值分别为27,36uA,耐蚀性较强.
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