FENG Yelin,DING Yunhu*,YE Chengzhuo,et al.Research on Non-Cyanide Copper Plating Performance of Electrical Aluminum Bars[J].Plating & Finishing,2022,(3):23-28.[doi:10.3969/j.issn.1001-3849.2022.03.005]
电气铝排无氰镀铜的性能研究
- Title:
- Research on Non-Cyanide Copper Plating Performance of Electrical Aluminum Bars
- Keywords:
- 6101 aluminum alloy; cyanide copper plating; cyanide-free copper plating; corrosion resistance
- 分类号:
- TQ153.1
- 文献标志码:
- A
- 摘要:
- 比较了电气用铝排( 6101 铝合金)无氰镀铜与氰化镀铜后的镀层外观、金相、孔隙率、接触电阻、可焊接性、极化曲线的差异,并在不同工艺及厚度的镀铜层上电镀 5 μ m 厚度的锡层,通过 Tafel 极化曲线、中性盐雾试验、高温高湿试验对其耐腐蚀性能进行评估。结果表明,无氰镀铜光泽度好,接触电阻低,但整平能力、深度能力、可焊接性和孔隙率不如氰化镀铜;两种镀铜层厚度小于 3 μ m 时,镀铜工艺及厚度对镀锡层耐中性盐雾性能影响较大,对镀锡层的耐高温、高湿性能几乎没有影响。
- Abstract:
- : The differences in appearance , metallography , porosity , contact resistance , weldability and polarization curve of aluminum busbars ( 6101 aluminum alloy ) after cyanide-free copper plating and cyanide copper plating are compared. A 5 μ m thick tin layer is electroplated on copper , and its corrosion resistance is evaluated through Tafel polarization curve , neutral salt spray test , high temperature and high humidity test. The results show that the cyanide-free copper plating has the better gloss and the lower contact resistance , but the leveling ability , depth ability , solderability , and porosity are not as good as cyanide copper plating. When the thickness of the two copper plating layers is less than 3 μ m , the copper plating process and the thickness has a greater impact on the neutral salt spray resistance of the tin-plated layer , and has almost no effect on the high-temperature and high-humidity resistance of the tin-plated layer.
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备注/Memo
收稿日期: 2021-03-12 修回日期: 2021-06-19 作者简介: 冯叶琳( 1994 — ),女,硕士研究生, E-mail : 1005986923@qq.com * 通信作者: 丁运虎, E-mail : 35184526@qq.com