Qi Haiyang*,Wang Haiyan,Jiang Chengbo.Study on transition process of silver plating on aluminum alloy[J].Plating & Finishing,2023,(10):78-82.[doi:10.3969/j.issn.1001-3849.2023.10.013]
铝合金镀银过渡工艺研究
- Title:
- Study on transition process of silver plating on aluminum alloy
- Keywords:
- silver coating ; corrosion resistance ; salt spray test ; adhesion
- 分类号:
- TQ153.2
- 文献标志码:
- A
- 摘要:
- 铝合金镀银层在长期使用过程中受环境影响易出现腐蚀起泡等问题。针对铝合金镀银的中间镀铜过渡工艺进行研究，对比了 5 种不同镀铜工艺下的镀层性能，并且对氰化镀铜和氰化光亮镀铜在不同时间配比下对镀银层性能的影响进行实验。结果表明：铝合金镀银工艺中引入氰化光亮镀铜，在氰化镀铜时间保证 5 min 以上再进行氰化光亮镀铜时，与单纯使用氰化镀铜 10 min 的工艺相比，可得到结晶更致密、结合力良好、孔隙率明显降低、中性盐雾实验耐蚀性大幅度提高的镀层。
- Abstract:
- ： The corrosion and bubbling of silver plating on aluminum alloy are easy to occur during the long-term use. In this paper ， the intermediate copper plating process for silver plating on aluminum alloy was studied ， the properties of the coatings under 5 different copper plating processes were compared ， and the effects of different time ratios of cyanide copper plating and bright cyanide copper plating on the properties of silver coating were tested. The results showed that when the bright copper plating was introduced into silver plating process on aluminum alloy ， and the bright copper plating was carried out after the time of copper plating was guaranteed to be more than 5 min ， it was better than the process of copper plating by cyanide for 10 min. The coating with denser crystal ， better adhesion ， lower porosity and higher corrosion resistance in neutral salt spray test can be obtained.
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备注/Memo
收稿日期： 2023-01-09 修回日期： 2023-02-18 * 通信作者： 祁海洋（ 1987 —），男，硕士研究生，高级工程师， email ： haiyang371243612@163.com 基金项目： 国家电网有限公司总部科技项目（ 5400-202121151A-0-0-00 ）