稀土在化学镀Ni-P镀层中应用的研究进展

Research Progress on Rare Earth in Electroless Ni-P Coating

综述了国内外稀土元素在改善化学镀Ni-P工艺和提高镀层性能方面的研究进展。介绍了稀土元素在化学镀Ni-P中的应用,阐述了稀土元素对化学镀Ni-P共沉积、镀液稳定性、沉积速率以及镀层耐蚀、耐磨性能的影响。分析讨论了稀土元素以其特殊的电子层结构、较低的电负性以及高的化学活性,在化学镀Ni-P中改善镀层工艺和性能的作用机理。指出了稀土在化学镀中应用的发展趋势。

The research progress of rare earth elements in improving process and coating properties of electroless Ni-P were summarized. The application of rare earth elements in electroless Ni-P, the influence of rare earth elements on co-depositions, solution stability, deposition rates and both corrosion resistance and wear resistance of coatings were introduced. The effect and mechanism of rare earth on electroless Ni P bath and properties of coating were analyzed, and the reasons that rare earth elements obviously improve the Ni-P coating properties due to their special electronic structure, lower electronegativity and better chemical activeness were discussed. The questions of which still need to be resolved in future were presented and the trend of future development was discussed.