擦伤电极技术中物理参量对金属再钝化过程的影响

Effect of Physical Parameters on Repassivation Process of Metal for Scratch Electrode Technique

摘要: 针对擦伤电极技术中长期存在的擦伤过程时间相关性问题,详细分析了其物理参量(擦伤时间和擦伤速度)对无膜表面最大表观反应电流的影响,指出:随着擦伤时间或擦伤速度的变化,无膜表面最大反应电流亦发生变化。这种变化将导致再钝化动力学衰减参数的失真。因此,以往的擦伤方式不能真实反映与定量研究金属材料的再钝化过程。

Abstract: Effect of physical parameters(scratching time and scratching velocity) during the scratching process on the maxium reaction current of bare surface has been discussed in detail. Analysis results indicate that the maxium reaction current of bare surface varies as the scratching time or velocity changes.This kind of variation would make the decay parameter of repassivation kinetics distort.So the traditional scratch method is not able to investigate quantitalively the repassivation process of metals.