摘要
以镀液稳定性、镀速、镀层光泽度和镀层中磷的质量分数为评价指标,考察La^3＋、Nd^3＋和Y^3＋对柠檬酸体系化学镀镍的影响。结果表明：加入适量的稀土离子,可明显提高镀液的稳定性;当稀土离子的质量浓度为2~4mg/L时,可适当地提高镀速和镀层光泽度;当Y^3＋的质量浓度为4mg/L时,综合性能最佳。向镀液中添加稀土离子,可起到细化镀层晶粒和改善镀层性能的作用,但镀层中不含稀土元素。
Influences of La^3＋ , Nd^3＋ and y^3＋ on citric acid system electroless nickel plating were investigated taking bath stability, plating rate, coating glossiness and mass fraction of phosphorus content in coating as index. Results showed that proper amount of rare earth ions can obviously improve the bath stability, and plating rate was raised and coating glossiness was improved when the rare earth ions mass concentration was in the range of 2 mg/L to 4 mg/L. Furthermore, comprehensive properties were the optimum when y^3＋ mass concentration was 4 mg/L. Rare earth ions play a role in refining the grains and improving the coating properties. Although rare earth ions were added into the bath, no rare earth element was found in the coating.
出处
《电镀与环保》
CAS
CSCD
北大核心
2016年第2期19-21,共3页
Electroplating & Pollution Control
基金
铝合金化学镀镍关键技术开发(黔科合GY字[2013]3035)
关键词
稀土离子
镀液稳定性
镀速
镀层光泽度
rare earth ions
bath stability
plating rate
coating glossiness
