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铁在含有一定浓度重铬酸根的硫酸中，自腐蚀状态下的阴极反应速率受重铬酸根阴极还原电子转移过程与扩散过程共同控制．外加磁场使铁的自腐蚀电位正移，且电位正移幅度随重铬酸根浓度增加而增大．在没有外加磁场时的自腐蚀电位下进行恒电位极化时，外加磁场后会出现阴极电流，磁致阴极电流随重铬酸根的浓度增大而显著增大．外加磁场会使含有一定量重铬酸根的硫酸溶液中铁的极化电阻显著下降．通过对磁场作用进行模型化，分析了磁场作用的动力学机理．磁场对阴极扩散过程的加速作用导致了自腐蚀电位正移及磁致阴极电流，而磁场引起自腐蚀电位的正移是引起极化电阻减小的主要原因．
In the sulfuric acid with a certain concentration of dichromate, the cathodic reaction rate of iron under autocatalytic conditions is controlled by both the dichromate cathodic reduction electron transfer process and the diffusion process. The applied magnetic field shifts the self-corrosion potential of iron positively, and the amplitude of positive potential increases with increasing dichromate concentration. In the absence of an applied magnetic field at potentiostatic potentials under potentiostatic conditions, a cathodic current appears after a magnetic field is applied and the magnetically induced cathodic current increases significantly with increased dichromate concentration. The applied magnetic field causes a significant decrease in the polarization resistance of iron in a sulfuric acid solution containing a certain amount of dichromate. By modeling the action of magnetic field, the dynamic mechanism of magnetic field is analyzed. The accelerating effect of the magnetic field on the cathode diffusion process leads to positive self-corrosion potential and magnetically induced cathode current, and the positive shift of the self-corrosion potential caused by the magnetic field is the main reason for the decrease of the polarization resistance.