The evolution of the wavy surface of iron electrode with anodic polarization time in a sulfuric acid solution under 0.4T magnetic field is quantified by 3D tomographic depth profile measurements. The electrode surface after anodic dissolution under magnetic field is irregular and the 3D profile changes with the anodic polarization time. The anodic dissolution rate is specific to the geometrical location on the electrode, which is in general insensitive to the polarization time as well as the surface irregularity.

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