Adsorption and inhibition effect of 2-thiohydantoin on mild steel corrosion in 0.1 M HCl

Yuce A. O., KARDAŞ G.

CORROSION SCIENCE, vol.58, pp.86-94, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 58
  • Publication Date: 2012
  • Doi Number: 10.1016/j.corsci.2012.01.013
  • Journal Name: CORROSION SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.86-94
  • Keywords: Mild steel, EIS, Electrochemical calculation, Acid corrosion, SCHIFF-BASE COMPOUNDS, COLD-ROLLED STEEL, HYDROCHLORIC-ACID, SULFURIC-ACID, CARBON-STEEL, IODIDE-ION, M H2SO4, DERIVATIVES, IRON, MEDIA
  • Çukurova University Affiliated: Yes

Abstract

2-Thiohydantoin (2-THD) was investigated as a corrosion inhibitor of mild steel (MS) in 0.1 M HCl solution using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and linear polarization resistance (LPR) measurements. The effects of temperature, hydrogen gas evolution and change of open circuit potential with immersion time were also studied. The MS surfaces with, and without inhibitor has been characterized by SEM. The results showed that 2-THD acts as a mixed type inhibitor in 0.1 M HCl by suppressing simultaneously the cathodic and anodic processes via physical adsorption on the MS surface followed by the Langmuir adsorption isotherm. (C) 2012 Elsevier Ltd. All rights reserved.