The Research On The Effect Of Rare Earth Nd,Ce On Fe-P Alloy By Chemical Plating

The thin films of rare earth elements, which have already been widely applied in magnetic, optical, electrolytic and superconductor devices, have become one of the hottest research fields in modern materials science and get much attention from many researchers.In the present paper, the thin film of Fe-P alloy is obtained by chemical plating, on the basis of which, different rare earth elements are added to improve the properties of the alloy.In the process of chemical plating of Fe-P alloy, it is found that the kind and concentration of complexing agent has a profound impact on the deposition rate but has little effect on the anti-corrosion performance. The experiment also shows that the oxidant and the redundant exert a significant impact on both the deposition rate and the anti-corrosion performance. Compared with the other components in the bath solution, the stabilizer does not have a close bearing on the deposition rate and anti-corrosion performance.The results show that after the adding of NdCl₃·7H₂O, the deposition rate is greatly enhanced, and the morphology of the thin films is also improved. The film becomes finer due to the decrease of the number of the pinholes and the size of the particles, which leads to the improvement of the anti-corrosion performance. The research also finds that when the content of NdCl₃·7H₂O is at 6g/L, the weight loss rate is only one third of that without the adding of rare earth element, demonstrating excellent anti-corrosion performance. The X-ray diffraction results demonstrate that the peak of the samples with NdCl₃·7H₂O added becomes wider compared with the original Fe-P alloy, indicating the shift towards amorphous structure. The energy spectrum results show that the adding of rare earth refrains the deposition of phosphorus but increase the co- deposition of ferrumiron.Also discussed in the paper is the influence of CeCl₃·7H₂O on the deposition rate and the anti-corrosion performance of the Fe-P alloy. It is found that dissimilar to the function of NdCl₃·7H₂O, the doping of CeCl₃·7H₂O has a negative impact on the deposition rate but improves the anti-corrosion performance of the thin films. The electric–chemical experiment and the micro analysis results demonstrate that the addition of CeCl₃·7H₂O makes the thin films more homogenous and the films also possess a better morphology. In addition, we also investigate the hardness and magnetic...