期刊
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
卷 7, 期 7, 页码 732-744出版社
TAYLOR & FRANCIS LTD
DOI: 10.1016/j.stam.2006.09.014
关键词
corrosion protective coatings; conducting polymer coatings; polyaniline coatings mild steel; electrochemical polymerization; cyclic voltammetry
Strongly adherent polyaniline coatings were electrochemically synthesized on mild steel from an aqueous salicylate medium. These coatings were characterized by cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy. The extent of the corrosion protection offered by polyaniline coatings to mild steel was investigated in aqueous 3% NaCl solution, 0.01 M Na2SO4 Solution and in aqueous solutions of NaCl + Na2SO4 with different concentrations by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The results of these studies reveal that the corrosion resistance of the polyaniline-coated mild steel is significantly higher and the corrosion rate is considerably lower than that of uncoated steel. (c) 2006 Published by NIMS and Elsevier Ltd.
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