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科学通报  2015 

离子液体添加剂对无氰电镀黄铜性能的影响

DOI: 10.1360/N972015-00317, PP. 2553-2560

Keywords: 离子液体,黄铜镀层,钢帘线,添加剂,循环伏安

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Abstract:

钢帘线电镀黄铜常采用先镀铜再镀锌后加热的热扩散法和氰化法.热扩散法能耗较大,而氰化法使用剧毒的氰化物,污染严重.针对此类问题,本文在优化后的一步无氰电镀黄铜镀液中加入离子液体添加剂来进一步改善镀层的性能.采用扫描电子显微镜(SEM)、能谱仪(EDS)和X射线衍射(XRD)分析了镀层的厚度、成分、形貌和组织结构.采用循环伏安法研究了离子液添加剂在电镀黄铜过程中的作用机理.结果表明,在组分为K4P2O7·3H2O200~270g/L,CuSO4·5H2O1~2g/L,ZnSO4·7H2O35~45g/L,H2O2(30%)0.1~0.6mL/L的镀液中加入10~15mg/L离子液体(1-己基-3-甲基咪唑硫酸氢盐([OMIM]HSO4))可以制备出与基体结合力牢固,延展性好,均匀、连续、致密的黄铜镀层,所得镀层质量得到了显著提高.

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