Journal
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
Volume 59, Issue 10, Pages 814-818Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/maco.200804170
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Electropolymerization of polyaniline (PANI) and polyaniline-tungstate (PANIW) coatings on mild steel were successfully performed using cyclic voltammetry technique. Processes were carried out in aqueous electrolyte solutions of 0.3 M oxalic acid + 0.1 M aniline and 0.3 M oxalic acid + 0.1 M aniline + 0.001 M sodium tungstate dehydrate. Corrosion protection of PANI and PANIW coatings was evaluated with the help of open circuit potential (E-ocp) monitoring and electrochemical impedance spectroscopy (EIS) methods. All the results reveal the influence of additional doping agent (i.e., tungstate) in corrosion protection behavior of PANI coating.
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