Potentiodynamic synthesis of poly(N-vinyl carbazole) films on stainless steel to enhance corrosion resistance in sulfuric acid solution

ABSTRACT

This study concerns the use of potentiodynamically synthesized poly(N-vinyl carbazole) films (PNVnCz) for corrosion protection of stainless steel (SS). The PNVnCz films were synthesized on SS by cyclic voltammetry from nonaqueous acetonitrile solution of tetrabutylammonium perchlorate and N-vinyl carbazole. The resulting PNVnCz films were characterized by ATR-FTIR and SEM. The ability of PNVnCz films to serve as corrosion protective coatings was evaluated using E_ocp-time curves, potentiodynamic polarization, and EIS techniques in 1 M H₂SO₄ solution. Corrosion test results revealed that PNVnCz films provide anodic protection and reduce corrosion rate of SS six times at the end of 5 days’ immersion.

GRAPHICAL ABSTRACT

KEYWORDS:

• 304 stainless steel
• corrosion
• electropolymerization

Acknowledgments

The author acknowledges Eskisehir Osmangazi University for providing research facilities.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Berrin Duran

Berrin Duran received her Ph.D. degree in Physical Chemistry from Eskisehir Osmangazi University, Eskisehir, Turkey, in 2010. Currently, she has been working as a lecturer (Assoc. Prof. Dr.) at Eskisehir Osmangazi University, where she has conducting research activities on synthesis, characterization of electropolymeric materials, and their supercapacitor and corrosion applications.