SHI Haiming,HUANG Zhangqi,WANG Chunxia*,et al.石海明1，黄章崎2，王春霞2*，彭叔森2，吴光辉2[J].Plating & Finishing,2021,(3):15-20.[doi:10.3969/j.issn.1001-3849.2021.03.004]
镍阳极溶解的工艺优化与性能调控
- Title:
- 石海明1，黄章崎2，王春霞2*，彭叔森2，吴光辉2
- 文献标志码:
- A
- 摘要:
- 为了维持企业现有电镀镍工艺范围，降低镍阳极溶解的残渣率，节约生产成本，对镀镍工艺进行了优化与性能调控。采用阳极极化曲线、计时电位法研究镀液组分浓度及工艺参数对镍阳极极化曲线的致钝电流密度影响规律，并对镀液进行调控。采用金相显微镜和扫描电子显微镜（SEM）观察镍阳极溶解的宏观、微观形貌。采用连续电化学溶解法计量残渣量，中性盐雾实验法评价镀层的耐蚀性。C工艺下镍阳极的致钝电流密度ipp为0.490 A/dm2，电极电位为-0.2286 V，阳极的溶解较均匀，未发现明显的孔洞，残渣率为0.793%，获取的镀层结晶细致。C工艺的致钝电流密度提高，电极电位下降，残渣率明显降低，且镀层的耐蚀性基本未改变。
- Abstract:
- In order to maintain the current nickel electroplating process scope, reduce the residue rate of nickel anode dissolution and corresponding production costs, the nickel plating process has been optimized. Anodic polarization curve and chronopotentiometry were used to study the influence of the concentration of various components of the plating solution and the process parameters on the blunt current density of the nickel anode polarization curve, and the plating solution was regulated according to this law. Metallographic microscope and scanning electrons were used to observe the macro and micro morphology of nickel anode dissolution, and X-ray diffractometer （XRD） was used to analyze its composition. The residue was measured by continuous electrochemical dissolution method, and the corrosion resistance of the coating was evaluated by neutral salt spray test. The blunt current density of the regulated nickel anode of the nickel plating C was 0.490 A/dm2, the electrode potential was -0.2286 V, the anode dissolution was uniform, no obvious holes were found, and the residue rate was 0.793%. After the adjustment, the blunt current density of the C plating process was increased, the electrode potential was reduced, the residue rate was significantly reduced, and the corrosion resistance of the coating was not changed.
参考文献/References:
[1] 佚名. 镍阳极材料的选用[J]. 电镀与精饰, 2010, 32(8): 8.
Anonymous. Selection of nickel anode materials[J]. Plating & Finishing, 2010, 32 (8): 8(in Chinese).
[2] Sellers W W. A retrospective view of nickel plating[J]. Plating & Surface Finishing, 1984, 71:64-70.
[3] Morrison A, Leitch J J, Szymanski G, et al. Electrochemical dissolution of nickel produced by the mond method under alternating temperatures and nickel carbonyl gas pressures[J]. Electrochimica Acta, 2018, 260:684-694.
[4] Barlow B C, Szymanski G, Lipkowski J, et al. Pulsed potential dissolution reduces anode residue formation during nickel electroplating[J]. Journal of the Electrochemical Society, 2016, 163 (5):164-170.
[5] Zhang B, Wang J, Wu B, et al. Unmasking chloride attack on the passive film of metals[J]. Nature Communications, 2018, 9:1-9
[6] Maurice V, Marcus P. Progress in corrosion science at atomic and nanometric scales[J]. Progress in Materials Science, 2018, 95(6):132-171.
[7] Yu K E, Shumskaya A E, Kutuzau M.D,et al. Degradation mechanism and way of surface protection of nickel nanostructures[J]. Materials Chemistry and Physics,年,223(期):88-97.
[8] 朱艳芳, 闫康平, 王伟, 等. 电镀中镍阳极残渣形成机理研究[J]. 广州化工, 2010, 38 (1): 139-140.
Zhu Y F, Yan K P, Wang W, Study on the formation mechanism of nickel anode residues in electroplating[J]. Guangzhou Chemical Industry, 2010, 38 (1): 139-140(in Chinese).
[9] Whittington C M, Yeung K L K, Lo W Y, et al. 精炼镍阳极-通往工业最佳实践应用的途径[J]. 电镀与涂饰, 2013, 5:11-17.
Whittington C M, Yeung K L K, Lo W Y, et al. Refined nickel anodes-the path to industrial best practice applications [J]. Electroplating and Finishing, 2013, 5: 11-17(in Chinese).
[10] 吕游. 电解镍组织结构及性能研究[D]. 兰州:兰州理工大学, 2018.
Lu Y. Study on the structure and properties of electrolytic nickel [D]. Lanzhou:Lanzhou University of Technology, 2018(in Chinese).
[11] 夏天东, 张晓宇, 徐仰涛, 等. 电沉积镍和轧制镍显微组织和力学性能的对比[J]. 中国有色金属学报, 2015, 25(11):3134-3140.
Xia T D, Zhang X Y, Xu Y T, et al. Comparison of microstructure and mechanical properties of electrodeposited nickel and rolled nickel[J]. Chinese Journal of Nonferrous Metals, 2015, 25(11):3134-3140(in Chinese).
[12] 李松. 电沉积纳米结构镍钴合金的制备及性能研究[D]. 吉林:吉林大学, 2018.
Li S. Preparation and properties of electrodeposited nanostructured nickel-cobalt alloy[D]. Jilin:Jilin University, 2018.
[13] 王希靖, 李梦泽, 王博士. 不同pH值的NaCl溶液中纯镍的电化学腐蚀行为研究[J]. 热加工工艺, 2019, 48(22):70-75.
Wang X J, Li M Z, Wang B X. Study on the electrochemical corrosion behavior of pure nickel in NaCl solution with different pH values [J]. Hot Processing Technology, 2019, 48(22):70-75(in Chinese).
[14] Hoffmeister H. Modeling the effects of nuclear environments on crevice corrosion of pure nickel by coupling of phase and polarization behavior[J]. Nuclear Engineering and Design, 2009, 239(10):1795-1803.
[15] 全国金属与非金属覆盖层标准化技术委员会. GB/T 6461-2002 金属基体上金属和其他无机覆盖层经腐蚀试验后的试样和试件的评级[S]. 北京:中国标准出版社, 2002.
National Technical Committee for Standardization of Metal and Non-metallic Coatings. GB / T 6461-2002 Rating of samples and test pieces after corrosion test of metal and other inorganic coatings on metal substrates [S]. Beijing: China Standard Press, 2002.
[16] Morrison A, Leitch J J, Szymanski G, et al. Mechanism of Electrochemical Dissolution of Nickel Grown by Carbonyl Method[J]. Electrochimica Acta, 2017, 248: 112-122.
备注/Memo
收稿日期： 2020-03-12；修回日期： 2020-06-09
通信作者： 王春霞，wcx95@163.com
基金项目： 校企合作项目（Hk201801112）