Ni was deposited on sintered NdFeB magnets by pulse current (PC) electro-deposition. And a better corrosion resistance of the deposits was observed. Growth direction of the Ni particles was changed to be in two dimensions, which provided the minimal defects and smooth interface, the smooth and pyknotic Ni deposits were observed. The texture of the Ni deposits by PC showed a preferred orientation along the (111) plane and a reduction in the number of extra phases, which improved the quality and corrosion resistance of the Ni deposits. In addition, the difference of the diffusion energy barrier on the different crystal surfaces results in electrochemical corrosion of the Ni deposits by first-principles calculation. These results can provide an appropriate explanation for the corrosion mechanism of Ni deposits, the theoretical corrosion model of Ni deposits was established.

通过脉冲电流（PC）电沉积将Ni沉积在烧结的NdFeB磁体上。并且观察到沉积物的更好的耐腐蚀性。将Ni颗粒的生长方向改变为二维，这提供了最小的缺陷和光滑的界面，观察到光滑和多晶的Ni沉积物。PC对Ni沉积物的织构显示出沿（111）平面的最佳取向，并且减少了多余的相数，从而提高了Ni沉积物的质量和耐蚀性。另外，通过第一性原理计算，在不同晶体表面上的扩散能垒的差异导致Ni沉积物的电化学腐蚀。这些结果可以为镍沉积物的腐蚀机理提供适当的解释，