摘要
纳米粒子具有一系列特殊的性能,采用电镀的方法在镀层中添加纳米颗粒可改善镀层的某些性能。利用纳米稀土氧化物在基体相中的补强作用以及可能赋予镀层某些新性能的特点,采用复合电镀的方法制备了Zn/纳米CeO2复合镀层,分析了镀液中CeO2颗粒悬浮量、阴极电流密度和镀液温度等因素对复合镀层中纳米CeO2复合量和膜层质量的影响,用正交试验法优选了各工艺参数。采用电化学方法研究了Zn/纳米CeO2复合镀层的耐蚀性。结果表明:复合镀层晶粒细小,平整光滑,显微组织均匀、致密,且镀层耐蚀性能比相同电镀条件下制得的纯锌镀层有所提高。
Generally, nanometer particle possesses a series of special performance. Therefore, by adding some nanometer particles in plating solution nanocomposite coating could be obtained by electrodeposition, which might improve some properties of the electroplated coating. Nanoparticles can reinforce the plating coating which existed in matrix and might improve the coating performance. Zn/CeO2 nanocomposite coatings were prepared by electrodeposition. The effects of CeO2 concentration in electrolyte, cathodic current density and temperature on the coating preparation were discussed. The optimized process parameters were obtained by orthogonal test. The effect of ceria nanoparticles on the eleetrodeposited zinc coating was studied by electroehemisty. The results show that the Zn/CeO2 nanocomposite coating has a fiat morphology and compact mierostructure, and its corrosion resistance is improved as compared with that of pure zinc coating.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2009年第4期32-35,共4页
Surface Technology
基金
江西省教育厅项目(GJJ08205)
关键词
复合电沉积
Zn/纳米CeO2复合镀层
耐蚀性
Composite electrodeposition
Zn/CeO2 nanocomposite coating
Corrosion resistance
