表面技术Issue(8)：25-30,6.DOI:10.16490/j.cnki.issn.1001-3660.2015.08.005
快速化学镀Ni-Zn-P合金工艺及镀层性能
Rapid Electroless Technique for Ni-Zn-P Alloy Coating and Its Properties
摘要
Abstract
ABSTRACT:Objective To determine a rapid electroless technique for Ni-Zn-P alloy coating. Methods The effects of the concen-tration of main salts, pH, temperature and electroless time on the deposition rate and Zn : Ni ( wt.%) of coating were studied by a series of experiments. An optimized electroless technique for Ni-Zn-P alloy was achieved. The morphology, composition, phase structure and corrosion resistance of the coating were analyzed by SEM, EDS, XRD and EIS, respectively. Results Ni-Zn-P alloy coating was prepared on carbon steel by the electroless technique when ZnSO4 ·7H2 O, NiSO4 ·6H2 O, NaH2 PO2 ·H2 O, NH4 Cl, C6 H5 Na3 O7 ·2H2 O, stabilizing agent, pH and temperature were 8 g/L, 35 g/L, 20 g/L, 50 g/L, 70 g/L, 1. 5 mg/L, 9. 0 and 90~95 ℃, respectively. The deposition rate of the coating was 5~6 μm/h. The contents of Zn, Ni and P in the coating were 8wt.% ~10wt.%, 80wt.% ~85wt.% and about 6wt.%, respectively. Besides, the Ni in the coating showed crystalline struc-ture in the presence of Zn. The diffraction peaks of Ni (111) and Ni (200) appeared at 2θ=45 ° and 2θ=52 °. In addition, elec-troless time had slight influence on the coating composition, but could affect the corrosion resistance of the coating. The thickness of Ni-Zn-P alloy coating was about 9~10 μm when the electroless time was 1. 5 h. The Ni-Zn-P coating with a thickness of 9~10μm had better corrosion resistance than the Ni-P coating with the same thickness. Conclusion The electroless deposition rate for Ni-Zn-P coating was higher. The presence of 8wt.% ~10wt.% Zn led to the formation of crystalline Ni in the coating, and im-proved the corrosion resistance of the coating.关键词
Ni-Zn-P镀层/化学镀/镀速/成分/耐蚀性Key words
Ni-Zn-P coating/electroless/deposition rate/chemical composition/corrosion resistance分类
化学化工引用本文复制引用
王梓杰,王帅星,周海飞,钱洲亥,赵晴,王敏,葛文娜,熊艳,黄勇..快速化学镀Ni-Zn-P合金工艺及镀层性能[J].表面技术,2015,(8):25-30,6.基金项目
国网浙江省电力公司科技项目(5211011306V2)Fund：Supported by Scientific and Technological Research Program of Zhejiang Electric Power Corporation of State Grid (5211011306V2) （5211011306V2）
