采用阵列电极（即丝束电极，WBE）技术研究了氯离子对存在针孔缺陷的涂层下金属腐蚀行为的影响。结果表明：WBE技术可以对材料表面电流进行表征，在涂层存在针孔缺陷条件下，腐蚀原电池阳极区率先出现在针孔缺陷处，阴极区在其周围逐渐扩展。在蒸馏水中，由于锈层覆盖，腐蚀出现了停滞的现象。随着溶液中氯离子浓度的升高，腐蚀停滞现象消除，并且腐蚀速率加快，阴极迁移速率加快。针孔缺陷条件下，阳极区会从缺陷位置向破损位置周围区域移动，而破损位置可能会随之出现阴极电流。

Array electrode (i.e., wire beam electrode, WBE) technique was used to study the effect of chloride ion on the corrosion behavior of metal under the coating with pinhole defects. The results show that WBE technology could characterize the surface current of material. Under the condition of pinhole defects in the coating, the anode region of the corroded galvanic cell first appeared at the pinhole defect, and the cathode region gradually expanded around it. In distilled water, corrosion was stagnant due to the coverage of rust layer. With the increase of the concentration of chloride ions in the solution, the corrosion stagnation phenomenon was eliminated, both the corrosion rate and the cathode migration rate were accelerated. Under the condition of pinhole defect, the anode area would move from the defect position to the area around the damage position, and the cathodic current might occur along the damaged position.