Electropolymerization, characterization and corrosion performance of poly(N-ethylaniline) on copper
By Duran, Berrin; Turhan, Metehan C.; Bereket, Gözen & Saraç, A. Sezai
Published in Electrochimica Acta
NULL
2009
Abstract
Poly(N-ethylaniline) (PNEA) coatings were grown by cyclic voltammetry technique on copper from 0.1 M N-ethylaniline (NEA) in 0.3 M oxalic acid solution. The optimum conditions (e.g. upper potential limit, scan rate and cycle number) effect on corrosion performance of synthesized PNEA films were determined in order to obtain best protection results against corrosion. The electrodeposited coatings were characterized by cyclic voltammetry (CV), Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR) spectroscopy and scanning electron microscopy (SEM). Redox parameters were found after electrochemical tests and results of stability tests of these films impart an electroactive behavior that is composed of both diffusion control and thin film behavior. In addition, corrosion performance of PNEA coatings were investigated in 0.1 M H2SO4 by Tafel extrapolation and electrochemical impedance spectroscopy (EIS) techniques.
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