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如果电极反应过程遵循Tafel规律,则在进行稳态极化测量情况下,可以用本文提出的数据处理方法对用等间距恒电位测量或等间距恒电流测量的极化数据进行处理,求得参考电极至工作电极之间的溶液电阻和Tafel斜率的数值,从而得到消除了溶液电阻欧姆电位降的真实极化曲线.计算机模拟结果和实验结果都证明,即使在溶液电阻并不大的介质中,如果腐蚀电流密度比较大,溶液电阻对于极化测量的影响也不可忽视.
If the electrode reaction follows the Tafel law, the data processing method proposed in this paper can be used to deal with the polarization data measured by constant-spacing constant current measurement or constant-spacing constant current measurement under the condition of steady-state polarization measurement, obtaining the reference The values of the solution resistance and the Tafel slope between the electrode and the working electrode result in a true polarization curve that eliminates the ohmic potential drop of the solution resistance. Computer simulation results and experimental results show that, even in the medium with small solution resistance, the influence of solution resistance on polarization measurement can not be neglected if the corrosion current density is relatively large.