Experimental studies of 2-pyridinecarbonitrile as corrosion inhibitor for mild steel in hydrochloric acid solution

Yildiz R., Doner A., Dogan T., DEHRİ İ.

CORROSION SCIENCE, vol.82, pp.125-132, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 82
  • Publication Date: 2014
  • Doi Number: 10.1016/j.corsci.2014.01.008
  • Journal Name: CORROSION SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.125-132
  • Çukurova University Affiliated: Yes

Abstract

The effect of 2-Pyridinecarbonitrile (2-PCN) was studied on mild steel (MS) corrosion in 0.1 mol L-1 HCl by electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR) and potentiodynamic polarization measurements. The surface morphologies of the MS were investigated in the inhibitor-free and in the presence of 10 mmol L-1 2-PCN containing corrosive media, at 120 h exposure period by scanning electron microscopy (SEM). The mechanism of adsorption was determined from the potential of zero charge (E-pzc). 2-PCN adsorption on the MS surface obeyed the isotherm of Langmuir and the thermodynamic parameters K-ads; Delta G(ads)degrees were also calculated and discussed. (C) 2014 Elsevier Ltd. All rights reserved.