The effects of Cl⁻ concentration and applied alternating current (AC) on the corrosion behavior of 2507 super duplex stainless steel (SDSS) were studied in a saturated Ca(OH)₂ solution by electrochemical measurements, immersion test, and x-ray photoelectron spectroscopy. The results show that the presence of Cl⁻ ions accelerates the corrosion of 2507 SDSS in the saturated Ca(OH)₂ solution. The protective ability of passive film decreases as Cl⁻ concentration increases, especially at the concentration of 10% Cl⁻. As the applied i_AC increases, the i_p value increases, and the E_p value decreases. The applied AC increases the number of defects within the passive film, affects the electronic property of the surface film, which results in a harmful effect on the passive film, and weakens its anti-corrosion property. The higher the i_AC, the more severe the damage influence is. Moreover, imposed AC promotes the pitting corrosion sensitivity of SDSS and enhances its corrosion rate. The applied AC and the addition of Cl⁻ exert a combined effect, reducing the corrosion resistance of passive film formed on 2507 SDSS.

氯的效果^-浓度和施加的交变电流（AC）上（SDSS）的2507超级双相不锈钢的腐蚀行为在饱和的Ca（OH）进行了研究₂溶液通过电化学测量，浸渍试验，和x射线光电子能谱法。结果表明，氯的存在^-离子加速2507 SDSS的在饱和的Ca（OH）腐蚀₂溶液。钝化膜的保护能力降低例如Cl ^-浓度的增加，特别是在10％的Cl的浓度^- 。随着施加的i _AC的增加，i _p值增加，而E _p值降低。施加的交流电会增加钝化膜中的缺陷数量，影响表面膜的电子性能，从而对钝化膜产生有害影响，并削弱其抗腐蚀性能。i _AC越高，损坏影响就越严重。此外，强加的交流促进了SDSS的点蚀敏感性，并提高了其腐蚀速率。所施加的AC和加法的Cl ^-施加的组合效果，减少形成于2507 SDSS钝化膜的耐腐蚀性。