应用电化学手段研究了不同参数设置下的交变电场对镍铬合 金点蚀破坏的再钝化修复效果的影响.结果表明，交变电场的各参数(高电位幅值EH、 低电位幅值EL、频率F、占空比R)对修复膜的性能影响有一定的规律性，即各参 数存在一个最佳的范围：EH为800～1000 mV，EL为-200～0 mV，F为5～20 Hz；适当参数条件下的交变电场对点蚀破坏后的镍铬合金电极具有明显的修复作用.并通 过 正交试验获得了最佳的修复条件，EH=800 mV，EL=-200 mV，R=1/2，F =10 Hz.
The repairing effect of Alternating Voltage electri c field on the pitted NiCralloy electrode is investigated by means of convention al electrochemical measurement techniques.The effect of the Alternating Voltage electric field with different parameters,such as the top or bottom potentials,fr equency,ratio of time,on the properties of repassive film displays certain regul arity,and exists optimal range for parameters' value,that is EH(800～1000 mV),EL(-200～0 mV),F(5～20 Hz).The electric field with adequate param eters will produce obvious repairing effect on the pitted electrode.The paramete rs’ condition is optimized by perpendicularity experiment,i.e.EH=800 mV， EL=-200 mV，R=1/2，F=10 Hz.
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