用扫描电镜研究了铸造铝硅合金表面浸锌膜的形貌,用电子探针、能谱仪研究了浸锌薄膜的组成,用增重法测试了浸锌膜的重量.结果表明,硫酸锌的含量对浸锌膜的形貌有较大影响,随浸锌时间的增加,锌膜趋于均匀化,第二次浸锌20~30 s,锌膜可以均匀地覆盖整个基体表面.浸锌膜中主要成分是锌,其次为铁、镍、铜.第一次浸锌30 s时,膜重达到最大值.
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