Performance of polyaniline pigmented vinyl acrylic coating on steel in aqueous solutions

被引：54

作者：

Sathiyanarayanan, S ^{[1
]}

Muthukrishnan, S ^{[1
]}

Venkatachari, G ^{[1
]}

机构：

[1] CECRI Nagar, Cent Electrochem Res Inst, Corros Testing & Evaluat Div, Karaikkudi 630006, Tamil Nadu, India

来源：

PROGRESS IN ORGANIC COATINGS | 2006年 / 55卷 / 01期

关键词：

EIS; coating; polyaniline; vinyl acrylic; steel; 0.1; NHCl; 3% NaCl; cement extract;

D O I：

10.1016/j.porgcoat.2005.09.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Using electrochemical impedance spectroscopy method, the performance of vinyl acrylic coating containing polyaniline on steel in 0.1 NHCl, 3% NaCl and cement extract (pH 13.0) has been evaluated. The resistance of the paint coating in all the media has been found to decrease initially from 10(8) to 10(6) Omega cm(2). On subsequent exposure to the aqueous media, the resistance of the coating has been found to increase steadily. Further, the open circuit potential values have been found to shift in active direction initially and then move in noble direction with longer immersion period due to the passivating effect of polyaniline pigment. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：5 / 10

页数：6

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