Poly(N-vinyl carbazole)-TiO2 composite coating for protection of steel

Duran B., Şimşek E.

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, vol.37, no.20, pp.2781-2794, 2023 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 20
  • Publication Date: 2023
  • Doi Number: 10.1080/01694243.2022.2127072
  • Journal Name: JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.2781-2794
  • Keywords: Poly(vinyl carbazole), electrodeposition, conducting polymer coating, TiO2, stainless steel, corrosion, CORROSION PROTECTION, STAINLESS-STEEL, ANTICORROSIVE PROPERTIES, POLYPYRROLE, PERFORMANCE, FILMS, POLYANILINE, ELECTROLYTE, INHIBITION, RESISTANCE
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

In this study, poly(N-vinyl carbazole)-TiO2 composite coatings (PNVC-TiO2) were electrochemically synthesized on the surface of 304 stainless steel (304-SS) using cyclic voltammetry from N-vinyl carbazole, tetrabutylammonium perchlorate and TiO2 containing non-aqueous acetonitrile solution. PNVC films were synthesized in the presence of different amounts (0.05%, 0.10% and 0.15%) of TiO2 and the optimum TiO2 amount was determined by comparison of potentiodynamic polarization curves of the stainless steel electrodes coated with these PNVC-TiO2 films. The synthesized PNVC-TiO2 films were characterized by ATR-FTIR and SEM investigations. Corrosion performances of PNVC-TiO2 coated stainless steel electrodes (SS/PNVC-TiO2) were investigated by E-ocp-time curves, potentiodynamic polarization (PP) and electrochemical impedance spectroscopy (EIS) in 1 M H2SO4 corrosive test solution and compared with the data of SS-PNVC electrode. It has been found that the PNVC-TiO2 coating exhibited better protection performance than the PNVC coating and provides 97% protection efficiency against corrosion of 304-SS in a highly acidic corrosive environment.