Corrosion inhibition of stainless steel by polyaniline, poly(2-chloroaniline), and poly (aniline-co-2-chloroaniline) in HCl

Huer E., Bereket G., ŞAHİN Y.

PROGRESS IN ORGANIC COATINGS, vol.57, no.2, pp.149-158, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Review
  • Volume: 57 Issue: 2
  • Publication Date: 2006
  • Doi Number: 10.1016/j.porgcoat.2006.08.004
  • Journal Name: PROGRESS IN ORGANIC COATINGS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.149-158
  • Keywords: polyaniline, poly(2-chloroaniline), corrosion, electropolymerization, steel, MILD-STEEL, ELECTROCHEMICAL POLYMERIZATION, ZINC ELECTRODES, ELECTROPOLYMERIZATION, FILMS, PYRROLE, PROTECTION, BEHAVIOR, IRON, POLY(ANILINE-CO-2-IODOANILINE)
  • Anadolu University Affiliated: No

Abstract

Polyaniline (PANT), poly(2-chloroaniline) (PCIANi), and poly(aniline-co-2-chloroaniline) (co-PCIANi) films were synthesized by electrochemical deposition on 304-stainless steel (SS) from an acetonitrile solution. The structural properties of these polymer films were characterized by spectroscopic (FTIR and UV-vis) and electrochemical (cyclic voltammetry) methods. Open circuit potential-time (E-ocp - time) curves, potentiodynamic polarization, and electrochemical impedance (EIS) measurements showed that these films have significant protective performance against corrosion of SS in 0.5 M HCl solution. It was found that co-PCIANi film has acted as a passivator as well as barrier for cathodic reduction reaction in a similar manner as PANT film. However, PCIANi film has behaved only as barrier for corrosion protection of SS in 0.5 M HCl. (C) 2006 Elsevier B.V. All rights reserved.