The corrosion behaviors and electrochemical properties of Q235A steel in the treated water containing corrosive halide anions (F⁻, Cl⁻) have been investigated with corrosion tests of static coupon and dynamic coupon testing, electrochemical measurement of open-circuit potential and linear sweep voltammetry. The results reveal that the existence of F⁻ and Cl⁻ ions in the simulated treated water accelerate the corrosion rate of Q235A steel. The corrosion rate reaches maximum with F⁻ concentration of 50 mg/L, Cl⁻ concentration of 200 mg/L, respectively. However, Q235A steel would passivate when an applied potential is added to the system. Meanwhile, the initiating passive potential becomes positive with F⁻, Cl⁻ concentration increasing. There is a little influence of F⁻, Cl⁻ concentration on the initiating passivation current density. Therefore, it is necessary to control F⁻, Cl⁻ concentration in the treated water when it is recycled by the pipelines made of Q235A steel.

在含有腐蚀性卤素阴离子处理过的水的腐蚀行为和Q235A钢的电化学性能（F ^- ，氯^- ）已被研究静态优惠券和动态试样测试，开路电位和线性扫描伏安法的电化学测量的腐蚀试验。结果表明，F的存在^-和Cl ^-的模拟处理后的水离子会加速Q235A钢的腐蚀速率。腐蚀速率达到最大值为F ^-为50mg / L，CL浓度^-浓度分别为200 mg / L。但是，当将施加的电势添加到系统中时，Q235A钢会钝化。同时，启动钝化电位变为正以F ^- ，氯^-浓度的增加。这里是F的影响不大^- ，氯^-上发起钝化电流密度集中。因此，有必要控制˚F ^{- ，}氯^-在当通过管道循环处理过的水的浓度由Q235A钢制成。