Effect of sulfate ions on anodic polarization behavior of nanocrystalline copper bulk

被引：0
作者：
Luo, Wei [1 ]
Xu, Yi-Min [1 ]
He, Ai-Na [1 ]
Qi, Rui-Lei [1 ]
Wu, Xi-Jun [1 ]
机构：
[1] Department of Materials Science and Engineering, Zhejiang University
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2009年 / 43卷 / 07期
关键词：
Anodic polarization; Na[!sub]2[!/sub]SO[!sub]4[!/sub; NaCl; Nanocrystalline copper;
D O I：
10.3785/j.issn.1008-973X.2009.07.027
中图分类号：
学科分类号：
摘要：
To investigate the influence of SO42- on the corrosion performance of nanocrystalline (NC) copper bulk, the corrosion tests were performed using electrochemical method, X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and field emission gun scanning electron microscopy (FEGSEM) technique in the 0.3%, 1.3%, 2.3%, 3.3% and 4.3% Na2SO4 corrosion solutions. The NC copper bulk was prepared by inert gas condensation and in situ warm compress (IGCWC). The results showed that with the increase of sulfate ion concentration, the critical current intensity increased but the potential decreasesd. After adding 1% NaCl into 0.3% Na2SO4 solution, the anodic polarization behavior of NC copper changed significantly. The critical current intensity decreased and the decreasing rate of anodic current intensity lowered notably in the range of activity-passivity zone. These changes were attributed to the CuCl protective film on the NC copper.
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页码：1307 / 1311
页数：4
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