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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Corrosion Behavior and Prediction of Corrosion Rate for Low Alloy Steel after Tempering Treatment
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Electrochemical Corrosion Behavior and Prediction of Corrosion Rate for Low Alloy Steel after Tempering Treatment

机译：低合金钢回火后的电化学腐蚀行为及腐蚀速率预测

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摘要

The electrochemical corrosion behavior and prediction of corrosion rate for low alloy steel aftertempering treatment in acid 3.5wt.% NaCl solution is investigated. First, the effects of temperingtemperature on microstructures are analyzed by optical microscope (OM) and scanning electronmicroscopy(SEM). Then, the corrosion rate of alloy steel is calculated by accelerated corrosion tests, itindicates superior corrosion resistance. The polarization curve and electrochemical impedancespectroscopy (EIS) are applied to research the corrosion process. The proper time constants are chosenfor equivalent circuit to fit experimental results. Finally, the results of EIS are in agreement withaccelerated corrosion and potentiodynamic polarization measurements by relating to known physicalparameters. Finally, the prediction model of corrosion rate is established by using grey system theory,simulations result shows that the obtained mathematical model is feasible, which can be well used toforecast corrosion rate for the low alloy steel .
机译：研究了低合金钢在3.5％（重量）的NaCl酸性溶液中回火后的电化学腐蚀行为和腐蚀速率的预测。首先，通过光学显微镜（OM）和扫描电子显微镜（SEM）分析了回火温度对显微组织的影响。然后，通过加速腐蚀试验计算出合金钢的腐蚀速率，表明其优越的耐腐蚀性。采用极化曲线和电化学阻抗谱（EIS）研究腐蚀过程。为等效电路选择合适的时间常数以适合实验结果。最后，通过涉及已知的物理参数，EIS的结果与加速腐蚀和电位动力学极化测量一致。最后，运用灰色系统理论建立了腐蚀速率的预测模型，仿真结果表明所建立的数学模型是可行的，可以很好地预测低合金钢的腐蚀速率。

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