A Novel Mathematical Method for Equivalent Circuit Modeling Determination for Electrochemical Impedance Spectroscopy to Study Corrosion Behavior of Corrosion Resistant Steel

Chi Yu; Ping Wang; Xiuhua Gao; Hongwei Wang

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A Novel Mathematical Method for Equivalent Circuit Modeling Determination for Electrochemical Impedance Spectroscopy to Study Corrosion Behavior of Corrosion Resistant Steel

机译：用于研究耐腐蚀钢的腐蚀行为的电化学阻抗谱等效电路建模确定的新数学方法

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A novel mathematical method is presented to determine equivalent circuit modeling based onelectrochemical impedance spectroscopy (EIS) dates, and to investigate the corrosion behavior ofcorrosion resistant steel for cargo oil tank (COT) in NaCl acid solution. First, the corrosion rate iscalculated by weight loss method, it indicates superior corrosion resistance. Next, the transfer functionof system is obtained by the electrochemical impedance spectroscopy (EIS) dates, and determinesproper time constants for equivalent circuit to fit experimental results. Finally, the results of EIS are inagreement with accelerated corrosion measurements by the fitting errors and relating to knownphysical parameters, which indicate the novel mathematical method is very effective.

机译：提出了一种新的数学方法来确定基于电化学阻抗谱（EIS）数据的等效电路模型，并研究耐腐蚀钢对货油舱（COT）在NaCl酸溶液中的腐蚀行为。首先，通过失重法计算出腐蚀速率，表明其优异的耐腐蚀性。接下来，通过电化学阻抗谱（EIS）数据获得系统的传递函数，并确定等效电路的合适时间常数以适合实验结果。最后，EIS的结果与拟合误差和与已知物理参数有关的加速腐蚀测量结果不一致，表明新的数学方法非常有效。

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《International Journal of Electrochemical Science》 |2015年第1期|共14页
作者
Chi Yu; Ping Wang; Xiuhua Gao; Hongwei Wang;
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1. An electrochemical impedance spectroscopy study of the corrosion behaviour of PVD coated steels in 0.5 N NaCl aqueous solution: Part Ⅰ. Establishment of equivalent circuits for EIS data modelling [J] . C. Liu, Q. Bi, A. Leyland, Corrosion science . 2003,第6期

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A Novel Mathematical Method for Equivalent Circuit Modeling Determination for Electrochemical Impedance Spectroscopy to Study Corrosion Behavior of Corrosion Resistant Steel

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