基于双电极电化学阻抗实现现场涂层老化状态的快速无损检测
In situ Rapid Non-destructive Diagnosis on Degradation of Coatings Based on Dual-electrode Electrochemical Impedance Probe
基于双电极电化学阻抗实现现场涂层老化状态的快速无损检测 |
| 熊启勇, 蒋婉娟, 曾美婷, 徐金山, 易勇刚, 李岩岩, 董泽华 |
|
In situ Rapid Non-destructive Diagnosis on Degradation of Coatings Based on Dual-electrode Electrochemical Impedance Probe |
| XIONG Qiyong, JIANG Wanjuan, ZENG Meiting, XU Jinshan, YI Yonggang, LI Yanyan, DONG Zehua |
| 图6 盐雾老化40 d后的1#涂层阻抗随双电解池间距及浸泡时间的变化曲线 |
| Fig.6 Time dependence of EIS of the coating sample 1# subject to 40 d salt spray versus immersion time and cell spacings of 4 cm (a), 8 cm (b), 10 cm (c) and equivalent circuit of impedance measured by the dual-electrolytic cell (d), in which the RMetal represent the ohmic resistance of metal substrate between two cells, Rct the hybrid anodic and cathodic charge transfer resistance of each cell, CPEdl the double layer capacitance, and Cc and Rc the capacitance and resistance of coatings under the two single cell |
|
|