研究了强流脉冲电子束表面处理对镁合金AZ91HP腐蚀性能的影响.通过动电位极化曲线测定,处理样品在5%NaCl溶液中的抗蚀性能有显著改善.72h盐浸失重法测试中,处理样品的腐蚀速度最大可以降低一个数量级.扫描电镜(SEM)及电子探针(EPMA)分析发现,强流脉冲电子束轰击处理在AZ91HP样品表层引发快速熔凝过程,进而导致镁、铝元素的含量及分布形式发生变化.样品表面重熔层中Al元素的过饱和固溶及成分均匀化是改善其腐蚀性能的主要原因.
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