目的：研究锌镍合金镀层的耐腐蚀性能。方法通过正交试验法,对锌镍合金电镀工艺进行优化,获得镀液配方。通过中性盐雾试验评判优化后的锌镍合金镀层的耐腐蚀性能,并与镀锌层和镀镉层进行对比。分析主盐、络合剂、pH值、电流密度、温度等对镀层耐腐蚀性的影响。结果最优配方为：氧化锌6~14 g/L,硫酸镍20~30 g/L,氢氧化钠100~140 g/L,光亮剂4~6 g/L,络合剂50~70 g/L。该配方获得的锌镍合金镀层在中性盐雾实验中,出白锈的时间可以达到720 h以上。结论锌镍合金镀层的耐腐蚀性优良,优于镀锌层和镀镉层。
Objective To study the corrosion resistance of Zn-Ni alloy coating. Methods By orthogonal test method, the Zn-Ni alloy electroplating technology was optimized, and the plating solution formula was obtained. The corrosion resistance of the opti-mized Zn-Ni alloy plating was evaluated by neutral salt spray test, and compared to those of the galvanized layer and cadmium plat-ing layer. The influence of the main salt, complexing agent, pH value, current density and temperature on the coating corrosion re-sistance was analyzed. Results The optimal formula was:zinc oxide 6~14 g/L, nickel sulfate 20~30 g/L, sodium hydroxide 100~140 g/L, brightener 4~6 g/L, and complexing agent 50~70 g/L. The Zn-Ni alloy coating obtained using this formula had a white rust occurrence time of more than 720 hours in the neutral salt spray test. Conclusion The Zn-Ni alloy coating had excellent corro-sion resistance, superior to those of zinc and cadmium plating layer.
参考文献
| [1] | 许强龄.现代表面处理新技术[M].上海:上海科学技术文献出版社,1994 |
| [2] | 张琳,王振尧,赵春英,曹公望,刘艳洁.碳钢和耐候钢在盐雾环境下的腐蚀行为研究[J].装备环境工程,2014(01):1-6. |
| [3] | 李国英.表面工程手册[M].北京:机械工业出版社,2001:75-77. |
| [4] | 许爱忠,胡文彬,沈斌,丁文江.锌-镍合金镀层耐蚀机理研究进展[J].电镀与环保,2000(03):1-5. |
| [5] | 李明,李敏伟,马英,傅耘.电镀Cd层在海洋大气环境中的腐蚀行为研究[J].装备环境工程,2013(01):33-37. |
| [6] | 曹宏涛,李雪亭.基于海洋环境的紧固件腐蚀防护要求及技术措施[J].表面技术,2013(01):105-108. |
| [7] | 蔡加勤;王宁;周绍民 .碱性电镀光亮锌镍合金研究[J].表面技术,1993,13(04):3-5. |
| [8] | GB/T10125-1997.人造气氛腐蚀试验---盐雾试验[S].,1997. |
| [9] | 蒋彤雅,吴菊珍.电镀耐蚀性锌镍合金工艺研究[J].新技术新工艺,2010(04):46-48. |
| [10] | 龚利华.添加剂对锌镍合金电镀的影响[J].腐蚀与防护,2006(04):171-173. |
| [11] | 邵大伟,贺志荣,张永宏.Ni含量对热浸Zn-Al-Ni合金镀层组织和耐腐蚀性能的影响[J].表面技术,2013(02):18-19,43. |
| [12] | 赵忠镇;教喜章 .Zn-Ni合金镀层耐腐蚀性的分析[J].腐蚀与防护,1998,19(03):113-114. |
| [13] | 张允诚;胡如南;向荣.电镀手册[M].北京:机械工业出版社,2007:354-356. |
| [14] | 田伟,谢发勤,吴向清.锌镍合金电镀工艺研究[J].材料保护,2008(01):28-30. |
| [15] | 何为 .锌镍合金的异常共沉积与正常共沉积的转变[J].表面技术,1998,27(02):22-24. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%