Abstract The effect of direct current (DC) stray current on passivation behavior of low-carbon (LC) reinforcing steel and a 10 %Cr reinforcing steel in saturated Ca(OH)2 solution was investigated by means of EIS, AFM and XPS measurements. In addition, cyclic potentiodynamic polarization curves were employed to evaluate the influence of stray current on chloride-induced pitting corrosion behavior of steels. The results indicate that stray current leads to reduced passivation capability of LC steel, whereas stray current induced degradation of passive film is less pronounced for 10 %Cr steel. Moreover, pitting corrosion resistance of both steels decreases significantly in the presence of stray current.

中文翻译：

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直流杂散电流对低碳钢和10%Cr钢在饱和Ca(OH)2溶液中电化学行为的影响

摘要 通过EIS、AFM 和XPS 测量，研究了直流（DC）杂散电流对低碳（LC）钢筋和10%Cr 钢筋在饱和Ca(OH)2 溶液中钝化行为的影响。此外，采用循环动电位极化曲线来评估杂散电流对钢的氯化物诱导点蚀行为的影响。结果表明杂散电流导致 LC 钢的钝化能力降低，而杂散电流引起的钝化膜退化对于 10%Cr 钢不太明显。此外，在存在杂散电流的情况下，两种钢的耐点蚀性显着降低。