用恒电位和动电位极化法研究了PO3-4、CrO2-4、SO2-4和NO-3 4种阴离子对316L不锈钢亚稳态孔蚀行为的影响.4种阴离子均抑制亚稳态小孔的形核速率和生长速率,其中PO3-4离子作用最强,CrO2-4离子次之,SO2-4和NO-3离子作用较弱.亚稳态孔蚀开始出现的电位Em和稳定孔蚀电位Ep均随离子浓度的对数增大而直线升高.讨论了不同离子的作用机制.
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