一、前言 交流电引起的腐蚀是一种十分普遍而且危害性极大的腐蚀形式。迄今为止,已有人对高频率、高幅值交流电对金属材料的影响进行了较多的研究,但低幅值交流电的影响研究较少。由于在高幅值交流电作用下,金属材料的电极电位,很容易从阴极极化区穿过阳极极化曲线的活化区进入钝化区或过钝化区,然后沿同样路径返回阴极极化区,这种瞬间电位的波动,在电极上引起了一个复杂的电流波动。这种波动的平均结果, I. Preface The corrosion caused by alternating current is a very common and extremely harmful form of corrosion. So far, there have been more studies on the influence of high-frequency and high-amplitude alternating current on metal materials, but the impact of low-amplitude alternating current has been less studied. Since the electrode potential of the metal material easily passes from the cathode polarization region through the activation region of the anode polarization curve to the passivation region or the over-passivation region by the high-amplitude alternating current and then returns to the cathode polarization region along the same path This transient potential fluctuation causes a complicated current fluctuation at the electrode. The average result of this fluctuation,