中文摘要：

运用旋转圆盘模拟研究了2205双相不锈钢在运动条件下的中性电解除鳞行为。结果表明：随着运动速率从0增大到30m／min时，试样脉冲电解后的失重量减小，除鳞效率降低，而表面形成的腐蚀坑变大；运动速率增大到30m／min以后，电解除鳞效率及腐蚀坑尺寸的变化较小。除鳞速率随电解时间延长而迅速降低、并逐渐趋于稳定值。根据电解时试样表面氧化皮中孔洞和裂纹等位置处气泡的形核、生长及逸出特点，讨论了不同运动速率条件下气泡在电解除鳞过程中的作用机理。

英文摘要：

Electrolyticall descaling behavior of 2205 duplex stainless steel in a neutral solution under dynamic conditions was investigated with rotating disk electrode. The results showed that, with the increasing movement speed of the test specimen from 0 to 30 m/min, the weight loss value of the specimen and the descaling efficiency of pulse electrolysis decreased gradually, while pits formed on the specimen surface enlarged. The descaling efficiency and pit size did not change obviously when the movement speed over 30 m/min. The descaling rate decreased rapidly with the increase of electrolysis time and then became stable gradually. Based on the characteristics of nucleation, growth and escape of gas bubbles at the pores and cracks in the oxide scale on the specimen surface during electrolysis, the mechanism related with the effect of bubbles was discussed in the electrolytic descaling process under different movement speed conditions.