苯亚磺酸钠对氯化铵配位体系电沉积镍的影响

发布时间：2018-04-20 06:21

  本文选题：镍 + 电沉积　； 参考：《电镀与涂饰》2017年23期

【摘要】：在氯化铵配位体系电镀镍溶液中加入苯亚磺酸钠(SBS)以解决镍镀层发黑、发脆的问题。考察了苯亚磺酸钠的质量浓度对电流效率、镀层表面形貌和外观的影响,以及氨水浓度、氯化铵浓度、镀液温度、电流密度等参数对电流效率和苯亚磺酸钠消耗量的影响。得到最佳工艺条件为:NiCl_2·6H_2O 237.7 g/L,NH_3·H_2O 70 g/L,NH_4Cl 212 g/L,苯亚磺酸钠100 mg/L,pH 7.5,温度50℃,电流密度0.2 A/dm~2。该条件下电流效率达99.01%,所得镍层为典型的面心立方结构,表面光亮、平整。
[Abstract]:Sodium benzenesulfonic acid (SBS) was added to the nickel plating solution of ammonium chloride coordination system to solve the problem of blackening and brittleness of nickel coating. The effects of sodium benzenesulfonic acid concentration on the current efficiency, surface morphology and appearance of the coating, and the effects of ammonia concentration, ammonium chloride concentration, bath temperature and current density on the current efficiency and consumption of sodium benzenesulfonate were investigated. The optimum technological conditions are as follows: 1: NiCl2 6H_2O 237.7 g / L ~ + S _ 3H _ 2O 70 g / L ~ (-1) NH _ 4Cl ~ (212) g 路L ~ (-1), pH = 7.5, temperature 50 鈩，

本文编号：1776623