Corrosion protective poly (o-ethoxyaniline) coatings on copper

被引：58

作者：

Chaudhari, Sudeshna ^{[1
]}

Patil, P. P. ^{[1
]}

机构：

[1] N Maharashtra Univ, Dept Phys, Jalgaon 425001, Maharashtra, India

来源：

ELECTROCHIMICA ACTA | 2007年 / 53卷 / 02期

关键词：

corrosion resistant coatings; conducting polymers; poly(o-ethoxyaniline); electrochemical polymerization; cyclic voltammetry; copper;

D O I：

10.1016/j.electacta.2007.08.002

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Poly(o-ethoxyaniline) (POEA) coatings were synthesized on copper (Cu) by electrochemical polymerization of o-ethoxyaniline in aqueous salicylate solution by using cyclic voltammetry. These coatings were characterized by cyclic voltammetry, UV-vis absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The performance of POEA as protective coating against corrosion of Cu in aqueous 3% NaCl was assessed by the potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results of the potentiodynamic polarization and EIS studies demonstrate that the POEA coating has ability to protect the Cu against corrosion. The corrosion potential was about 0.330 V versus SCE more positive in aqueous 3% NaCl for the POEA coated Cu than that of uncoated Cu and reduces the corrosion rate of Cu almost by a factor of 140. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：927 / 933

页数：7

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