A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione

Ahmed Y. Musa, Abdul Amir H. Kadhum, Abu Bakar Mohamad, Abdul Razak Daud, Mohd Sobri Takriff, Siti Kartom Kamarudin

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

The corrosion protection of mild steel in a 2.5 M H2SO4 solution by 4,4-dimethyloxazolidine-2-thione (DMT) was studied at different temperatures by measuring changes in open circuit potential (OCP), potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS). Corrosion current densities calculated from EIS data were comparable to those obtained from polarisation measurements. Results showed that DMT inhibited mild steel corrosion in a 2.5 M H2SO4 solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Polarisation curves showed that DMT is a mixed-type inhibitor. Changes in impedance parameters suggested the adsorption of DMT on the mild steel surface, leading to the formation of protective films. The DMT adsorption on the mild steel surface followed the Langmuir adsorption isotherm. The kinetic and thermodynamic parameters for dissolution and adsorption were investigated. Comprehensive adsorption (physisorption and chemisorption) of the inhibitor molecules on the mild steel surface was suggested based on the thermodynamic adsorption parameters.

Original languageEnglish
Pages (from-to)2393-2399
Number of pages7
JournalCorrosion Science
Volume51
Issue number10
DOIs
Publication statusPublished - Oct 2009

Fingerprint

Thiones
Physisorption
Chemisorption
Carbon steel
Corrosion
Acids
Electrochemical impedance spectroscopy
Thermodynamics
Polarization
Steel corrosion
Potentiodynamic polarization
Protective coatings
Corrosion protection
Isotherms
Dissolution
Current density
Temperature
Molecules
Kinetics
Networks (circuits)

Keywords

  • A. Mild steel
  • B. EIS
  • B. Polarisation
  • C. Acid inhibition

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione. / Musa, Ahmed Y.; Kadhum, Abdul Amir H.; Mohamad, Abu Bakar; Daud, Abdul Razak; Takriff, Mohd Sobri; Kamarudin, Siti Kartom.

In: Corrosion Science, Vol. 51, No. 10, 10.2009, p. 2393-2399.

Research output: Contribution to journalArticle

Musa, Ahmed Y. ; Kadhum, Abdul Amir H. ; Mohamad, Abu Bakar ; Daud, Abdul Razak ; Takriff, Mohd Sobri ; Kamarudin, Siti Kartom. / A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione. In: Corrosion Science. 2009 ; Vol. 51, No. 10. pp. 2393-2399.
@article{b30299aa0dce44af8b5122fd132268e4,
title = "A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione",
abstract = "The corrosion protection of mild steel in a 2.5 M H2SO4 solution by 4,4-dimethyloxazolidine-2-thione (DMT) was studied at different temperatures by measuring changes in open circuit potential (OCP), potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS). Corrosion current densities calculated from EIS data were comparable to those obtained from polarisation measurements. Results showed that DMT inhibited mild steel corrosion in a 2.5 M H2SO4 solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Polarisation curves showed that DMT is a mixed-type inhibitor. Changes in impedance parameters suggested the adsorption of DMT on the mild steel surface, leading to the formation of protective films. The DMT adsorption on the mild steel surface followed the Langmuir adsorption isotherm. The kinetic and thermodynamic parameters for dissolution and adsorption were investigated. Comprehensive adsorption (physisorption and chemisorption) of the inhibitor molecules on the mild steel surface was suggested based on the thermodynamic adsorption parameters.",
keywords = "A. Mild steel, B. EIS, B. Polarisation, C. Acid inhibition",
author = "Musa, {Ahmed Y.} and Kadhum, {Abdul Amir H.} and Mohamad, {Abu Bakar} and Daud, {Abdul Razak} and Takriff, {Mohd Sobri} and Kamarudin, {Siti Kartom}",
year = "2009",
month = "10",
doi = "10.1016/j.corsci.2009.06.024",
language = "English",
volume = "51",
pages = "2393--2399",
journal = "Corrosion Science",
issn = "0010-938X",
publisher = "Elsevier Limited",
number = "10",

}

TY - JOUR

T1 - A comparative study of the corrosion inhibition of mild steel in sulphuric acid by 4,4-dimethyloxazolidine-2-thione

AU - Musa, Ahmed Y.

AU - Kadhum, Abdul Amir H.

AU - Mohamad, Abu Bakar

AU - Daud, Abdul Razak

AU - Takriff, Mohd Sobri

AU - Kamarudin, Siti Kartom

PY - 2009/10

Y1 - 2009/10

N2 - The corrosion protection of mild steel in a 2.5 M H2SO4 solution by 4,4-dimethyloxazolidine-2-thione (DMT) was studied at different temperatures by measuring changes in open circuit potential (OCP), potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS). Corrosion current densities calculated from EIS data were comparable to those obtained from polarisation measurements. Results showed that DMT inhibited mild steel corrosion in a 2.5 M H2SO4 solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Polarisation curves showed that DMT is a mixed-type inhibitor. Changes in impedance parameters suggested the adsorption of DMT on the mild steel surface, leading to the formation of protective films. The DMT adsorption on the mild steel surface followed the Langmuir adsorption isotherm. The kinetic and thermodynamic parameters for dissolution and adsorption were investigated. Comprehensive adsorption (physisorption and chemisorption) of the inhibitor molecules on the mild steel surface was suggested based on the thermodynamic adsorption parameters.

AB - The corrosion protection of mild steel in a 2.5 M H2SO4 solution by 4,4-dimethyloxazolidine-2-thione (DMT) was studied at different temperatures by measuring changes in open circuit potential (OCP), potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS). Corrosion current densities calculated from EIS data were comparable to those obtained from polarisation measurements. Results showed that DMT inhibited mild steel corrosion in a 2.5 M H2SO4 solution and indicated that the inhibition efficiencies increased with the concentration of inhibitor, but decreased proportionally with temperature. Polarisation curves showed that DMT is a mixed-type inhibitor. Changes in impedance parameters suggested the adsorption of DMT on the mild steel surface, leading to the formation of protective films. The DMT adsorption on the mild steel surface followed the Langmuir adsorption isotherm. The kinetic and thermodynamic parameters for dissolution and adsorption were investigated. Comprehensive adsorption (physisorption and chemisorption) of the inhibitor molecules on the mild steel surface was suggested based on the thermodynamic adsorption parameters.

KW - A. Mild steel

KW - B. EIS

KW - B. Polarisation

KW - C. Acid inhibition

UR - http://www.scopus.com/inward/record.url?scp=69449093552&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69449093552&partnerID=8YFLogxK

U2 - 10.1016/j.corsci.2009.06.024

DO - 10.1016/j.corsci.2009.06.024

M3 - Article

AN - SCOPUS:69449093552

VL - 51

SP - 2393

EP - 2399

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

IS - 10

ER -