Super-hydrophobic surfaces improve corrosion resistance of copper in seawater

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• 作者：Tao Liu ; Yansheng Yin ; Shougang Chen ; Xueting Chang ; Sha Cheng
• 关键词：Super-hydrophobic ; Copper ; Corrosion resistance ; Seawater ; Electrochemistry
• 刊名：Electrochimica Acta
• 出版年：2007
• 期刊代码：30_00134686
• 类别：ch
• 出版时间：1 March 2007
• 卷：52
• 期：11
• 页码：3709-3713
• 文件大小：1021 K

摘要

Pretreated by a n-tetradecanoic acid (CH₃(CH₂)₁₂COOH) etch, the super-hydrophobic film was formed on the fresh copper surface. The film structure was probed with contact angle measurement and scanning electron microscopy(SEM). The results suggest that the structure of the film is similar to haulm or flower and the seawater contact angle is larger than 150°. Moreover, the corrosion resistance of bare and modified samples in seawater were investigated by cyclic voltammograms(CV) and electrochemical impedance spectroscopy(EIS). Experimental results show that the corrosion rate of Cu with super-hydrophobic surface decreases dramatically because of its special microstructure.