期刊论文

中文

电镀与涂饰

1004-227X

2007

26

6

10-12

10.3969/j.issn.1004-227X.2007.06.004

湖北省教育厅重点项目(D200518004)

本校为第一机构

研究了酸性电镀光亮Zn-Ni合金中ρ(Ni2+)/ρ(Zn2+)的比值、阴极电流密度、镀液温度、pH对镀层中镍的质量分数的影响.通过扫描电子显微镜(SEM)研究了镍镀层的微观形貌.结果表明,镀层含镍量随着电流密度的增大、温度升高而增大;随着镀液中pH的升高、含镍量的增大而下降.获得了最佳工艺参数:27～100 g/L NiSO4·6H2O,25 g/L ZnCl2,100 g/L NaCl,50 g/L NH4Cl,25～30 g/L Na3C6H5O7·2H2O,10 g/L H3BO3,5 mL/L L-5A添加剂,30～40 mL/L L-5B添加剂,Jk = 1.25～6 A/dm2,θ = 20～40°C,pH = 4.5～6.0.

The effect of ratio of m(Ni2+)/m(Zn2+),cathodic current density,bath's temperature and pH value on the nickel mass fraction of deposit in acidic bright Zn-Ni alloy plating were investigated.Micromorphologies of nickel deposit were studied by SEM.Results showed that the nickel content in alloy deposit increases with increasing current density and temperature,and decreases with increasing pH value and ratio ofρ(Ni2+)/ρ(Zn2+)in bath.The optimal process par...