Abstract
The electrochemical synthesis and corrosion behavior of polyaniline (PANI) on mild steel from sodium-benzoate solutions were investigated. Thin, adherent, polyaniline films were obtained by anodic oxidation with current densities between 0.3 and 1.5 mA cm −2. During electropolymerization induction period was not observed. The corrosion behavior of mild steel with polyaniline coating in 0.1 M sulfuric acid and 0.5 M NaCl (pH=3) solutions, was investigated by spectrophotometric method and electrochemical impedance technique. The atmospheric corrosion behavior was also investigated. It was concluded that this coatings had provided corrosion protection of mild steel in all mentioned corrosion environments.
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