腐蚀电化学阻抗谱的数据解析与物理模型研究进展

郭玉杰, 李艳辉, 夏大海, 胡文彬

Data Analysis and Physical Model of Electrochemical Impedance Spectroscopy for Corrosion Systems: Progresses and Challenges

GUO Yujie, LI Yanhui, XIA Da-Hai, HU Wenbin

图3 钝态金属表面覆盖完整均匀钝化膜时的电化学等效电路[39]

Fig.3 Equivalent circuit model corresponding to the case of the formation of complete uniform passivation film on passive metal. Wherein, Re represents the solution resistance, Cdl represents the capacitance of the electrochemical double layer at the interface between the passive film and the electrolyte, ZF,O2 is Faradaic resistance of oxygen reduction at the passive film/solution interface, Rox, i and Rox, e represent the resistances to the movements of ions and electrons in the passive film, respectively[39]