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采用线性电位扫描极化曲线测试 ,以及恒电位极化下磁场扰动法研究了磁场对铜在氯化钠溶液中阳极溶解的作用。在阳极表观 Tafel区 ,无磁场时恒电位极化然后外加磁场使阳极电流密度增大 ;有磁场时恒电位极化然后撤去磁场使阳极电流密度减小。磁场通过加速电极溶液界面的传质过程而加速阳极溶解。由于 Cu/ Na Cl与Fe/ H2 SO4体系阳极 Tafel区速率控制步骤不同 ,会导致不同的磁场效应作用
The effect of magnetic field on anodic dissolution of copper in sodium chloride solution was investigated by linear potential sweep polarization curve test and magnetic field perturbation method under potentiostatic polarization. In the apparent Tafel region of the anode, constant potential polarization without magnetic field then increases the current density of the anode. When there is a magnetic field, potentiostatic polarization and then removal of the magnetic field reduce the anode current density. The magnetic field accelerates anodic dissolution by accelerating the mass transfer process at the electrode solution interface. Due to the different rate control steps in the Tafel region of the anode of Cu / NaCl and Fe / H2SO4 systems, different magnetic field effects will result