碱性体系中电镀黑色光亮锌镍合金的研究

Bright Black ZnNi Alloy Electroplating in basic Solution

介绍了一种在碱性溶液中电镀黑色光亮锌－镍合金新工艺，讨论了镀液的组成、操作温度及阴极电流密度对镀层含镍量的影响。腐蚀实验结果表明，在含镍量相同的条件下，当镀层未钝化时。

Abstract)A new bright black ZnNi alloy electroplating process with basic bath solution is introduced. The technological parameters are:ZnO 2￣12, NaOH 80￣120, NiSO46H2O 16￣25 glycine 4￣6 g/L;triethanolamine 50￣80,additive (WD 928) 8￣10 ml/L;temperature:30￣65 , cathodic current densities:0.5￣6.5 A/dm,anodes:Zn and Ni. From this electrolyte, a bright black and anticorrosive aloy deposits containing 1￣10 percent nickel content can be obtained. The results of corroding tests in 3% HCl solution and in 5% NaCl solution showed that the anticorrosive abilities of bright black ZnNi alloy deposit were four times as high as bright white ZnNi alloy deposit with same nickel content without passivating.