Comparison of polyaniline electrodeposition on carbon steel from oxalic acid and salicylate medium

被引：23

作者：

Nautiyal, Amit ^{[1
]}

Parida, Smrutiranjan ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India

来源：

PROGRESS IN ORGANIC COATINGS | 2016年 / 94卷

关键词：

Polyaniline; Conductive polymer coating; CORROSION PROTECTION; CONDUCTING POLYMERS; MILD-STEEL; STAINLESS-STEEL; ELECTROCHEMICAL SYNTHESIS; BILAYER COATINGS; FILMS; IRON; PERFORMANCE; ANILINE;

D O I：

10.1016/j.porgcoat.2016.01.014

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Polyaniline (PANI) coatings on carbon steel (CS) substrate were electrodeposited from two different mediums such as oxalic acid (H2C2O4) and sodium salicylate (C7H5NaO3). In oxalic acid, the importance of the passivation of the carbon steel surface prior to PANI electrodeposition was investigated by linear potentiodynamic test. It showed below 0.3 M oxalic acid concentration PANI film formation was not complete. The extent of passivation of the carbon steel was found to depend on the strength of the oxalic acid, which determined the formation and the nature of the PANI film. Whereas, deposition from the sodium salicylate solution did not show any passivation peak, but resulted in the formation of a transparent, uniform, compact and adherent PANI coating. The formation, morphology and characteristics of the coatings were compared by cyclic voltammetry, scanning electron microscopy (SEM) and Raman spectroscopy. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：28 / 33

页数：6

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