Role of supporting electrolyte on the corrosion performance of poly (carbazole) films deposited on stainless steel

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DURAN B., Cakmakci I., Bereket G.

CORROSION SCIENCE, vol.77, pp.194-201, 2013 (Peer-Reviewed Journal)

• Publication Type: Article / Article
• Volume: 77
• Publication Date: 2013
• Doi Number: 10.1016/j.corsci.2013.08.001
• Journal Name: CORROSION SCIENCE
• Journal Indexes: Science Citation Index Expanded, Scopus
• Page Numbers: pp.194-201
• Keywords: Stainless steel, Cyclic voltammetry, EIS, Acid corrosion, Polymer coatings, POLYCARBAZOLE THIN-FILMS, ELECTROCHEMICAL SYNTHESIS, BIPOLAR PLATES, PROTECTION, POLYPYRROLE, POLYANILINE, ELECTRODEPOSITION, COATINGS, COMPOSITE, ELECTROPOLYMERIZATION

Abstract

This work presents a comparative study of supporting electrolyte effect on the protection ability of poly(carbazole) films deposited on 304 stainless steel. Tetrabutylammonium, sodium and lithium perchlorate salts were used as supporting electrolyte in the investigation. Poly(carbazole) films were synthesized by electropolymerization of carbazole using cyclic voltammetry from acetonitrile medium containing monomer and supporting electrolyte. Protective properties of poly( carbazole)s were investigated in 1 M H2SO4 solution using E-ocp-t curves, Tafel polarization and electrochemical impedance spectroscopy. Corrosion test results revealed that supporting electrolyte affects conductivity of deposited films. Poly(carbazole) synthesized from tetrabutylammonium perchlorate exhibited better protection performance than the other poly(carbazole)s. (C) 2013 Elsevier Ltd. All rights reserved.