LIU Jianxiang*,PU Jiantang,ZHOU Lei,et al.Effect of Organic Sulfonate Additives on Properties of Hard Chromium Electroplating[J].Plating & Finishing,2021,(6):6-9.[doi:10.3969/j.issn.1001-3849.2021.06.002]
有机磺酸盐添加剂对电镀硬铬性能的影响
- Title:
- Effect of Organic Sulfonate Additives on Properties of Hard Chromium Electroplating
- 文献标志码:
- A
- 摘要:
- 以有机磺酸盐作为镀硬铬添加剂，在钢铁基材上电镀硬铬，研究有机磺酸盐硬铬添加剂在最佳含量下对阴极电流效率、沉积速度、镀层硬度和微裂纹的影响。结果表明：在CrO3为250 g/L、H2SO4为2.5 g/L、Cr3+为3.2 g/L，温度为55±2 ℃，Jk为55 A/dm2，有机磺酸盐硬铬添加剂最佳含量为4 g/L工艺条件下，电流效率可达19.5 %，平均沉积速度为54 ?m/h，镀层硬度大于1000 HV，镀硬铬层可形成窄而密的网状微裂纹。
- Abstract:
- The organic sulphonate was used as additive in hard chromium plating on steel substrate. The effects of organic sulphonate hard chromium additives on the current efficiency, deposition rate, hardness and micro-crack were studied. The results showed that when CrO3 was 250 g/L, H2SO4 was 2.5 g/L, Cr3+ was 3.2 g/L, temperature was 55±2 ℃, current density was 55 A/dm2 and the organic sulphonate additives was 4 g/L, the current efficiency was 19.5 %, average deposition rate was 54 ?m/h and hardness was greater than 1000 HV. The plated hard chrome layer can form narrow and dense network micro-cracks.
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备注/Memo
收稿日期： 2020-03-30；修回日期： 2020-05-25
作者简介： 刘建祥（1990—)，男，山东临沂，硕士研究生，主要从事金属与非金属表面处理研究。email： ljxiang68@163.com
基金项目： 临沂市重点研发计划（2019ZDYF021）