测量不锈钢电化学噪声的非对称表面方法

刘微

Asymmetric Surface Configuration for Electrochemical Noise Measurement on Stainless Steel

LIU Wei

图8 304不锈钢抛光-钝化电极对在不同时段的ECN-EPN信号、估计阳极电流ia-EPN信号的交互递归图

Fig.8 Cross recurrence plot of ECN-EPN signal (a), and ia-EPN signal (b) of 304 stainless steel polishing-passivation electrode at 0.6-0.76 h, where the red line is the fitted synchronous line representing their synchronous evolution trend; the cross recurrence plot of ECN-EPN signal (c) and ia-EPN signal (d) at 22.5-23 h, the negative value of EPN signal is used to make the current potential grow in the same direction and the threshold is ε=0.05, other parameters are set the same as in Fig.7