用动电位扫描法研究了０．５Ｔ磁场下纯铁在三种典型介质中的阴极极化曲线和两种介质中的阳极极化曲线．发现磁场会引起一个新的过电位一磁致过电位ｍａｇ，使铁上阴极析氢和铁的阳极溶解有不同程度的加速，尤以在酸性介质中为甚．认为这是由于磁场使铁－水溶液界面抗磁性离子的水合作用减少和使Ｆｅ２＋有吸附于铁电极表面的倾向，导致双电层结构的改变和腐蚀体系的活性增加．
Cathodic process of iron in three typical solutions and anodic process of iron in two typical solutions were studied in the presence of magnetic field of 0.5T (tesla) at 23 ℃ Polarization curves for hydrogen evolution and iron dissolution during magnetization were measured. The experimental results indicate that both hydrogen evolution and iron dissolution were more or less accelerated by additional magnetic overpotential-- △φmag and the phenomenon is more evident in acidic solution. This could be attributed to the reduction of diamagnetic ion hydrate on the iron/solution interface and the adsorption of Fe2+ on the iron surface, which are responsible for the change of electric double layer structure and the increase of activity in the corrosion system.
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