Corrosion protection of copper by polypyrrole film studied by electrochemical impedance spectroscopy and the electrochemical quartz microbalance

被引：21
|
作者：
Lei, Yanhua [1 ,2 ]
Ohtsuka, Toshiaki [1 ]
Sheng, Nan [1 ]
机构：
[1] Hokkaido Univ, Div Mat Sci & Engn, Fac Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan
[2] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 357卷
关键词：
Copper; Polymer; EIS; EQCM; Polymer coating; ELECTROACTIVE CONDUCTING POLYMERS; PHYTIC ACID; COATINGS; ELECTROPOLYMERIZATION; BEHAVIOR; DEGRADATION; ELECTRODE; PYRROLE; SURFACE; EQCM;
D O I：
10.1016/j.apsusc.2015.09.053
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Polypyrrole (PPy) films were synthesized on copper in solution of sodium di-hydrogen phosphate and phytate for corrosion protection. The protection properties of PPy films were comparatively investigated in NaCl solution. During two months immersion, the PPy film doped with phytate anions, working as a cationic perm-selective membrane, inhibited the dissolution of copper to 1% of bare copper. Differently, the PPy film doped with di-hydrogen phosphate anions, possessing anionic perm-selectivity, was gradually reduced, and inhibited the dissolution to 7.8% of bare copper. Degradation of the PPy films was studied by comparing the electrochemical impedance spectroscopy change at different immersion time and Raman spectra change after immersion. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：1122 / 1132
页数：11
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