Abstract The galvanic effect of the composed phases in 2205 duplex stainless steel on the passive films formation of the two phases in a 3.5% NaCl solution was investigated by electrochemical measurements and composition analyses. The results show that the galvanic effect benefits the stability of the passive films of both phases. However, the inner part of the α-phase passive layer benefits the most because of the increase in the concentrations of Cr, Ni and Mo in the passive film, the decrease in the formation rate and transfer velocity of the oxygen vacancies, and the reduction in the defect density.

中文翻译：

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2205 双相不锈钢中的组成相对 3.5% NaCl 溶液中形成的钝化膜的有益电偶效应

摘要 通过电化学测量和成分分析，研究了 2205 双相不锈钢中组成相对 3.5% NaCl 溶液中两相钝化膜形成的电偶效应。结果表明，电流效应有利于两相钝化膜的稳定性。然而，α相钝化层的内部受益最大，因为钝化膜中Cr、Ni和Mo浓度的增加，氧空位形成速率和转移速度的降低，以及在缺陷密度。