Corrosion inhibition of mild steel in 1.0 M HCl by amino compound: Electrochemical and DFT studies

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Abstract

The purpose of this study was to examine the inhibitory effect of 4-amino-5-methyl-4H-1, 2, 4-triazole-3-thiol (AMTT) on the corrosion of mild steel in 1.0 M HCl solution using weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The results indicate that AMTT performed as a good mixed-type inhibitor for mild steel corrosion in a 1.0 M HCl solution, and the inhibition efficiencies increased and tend to saturate with inhibitor concentration. Potentiodynamic polarization results showed that AMTT is a mixed-type inhibitor. Adsorption of AMTT molecules is a spontaneous process, and its adsorption behavior obeys Langmuir's adsorption isotherm model. The reactivity of AMTT was analyzed through theoretical calculations based on density functional theory. Results showed that the reactive sites were located on the nitrogen and sulfur (N1, N2, and S) atoms.

Original languageEnglish
Pages (from-to)3379-3386
Number of pages8
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume43
Issue number9
DOIs
Publication statusPublished - Sep 2012

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Potentiodynamic polarization
Discrete Fourier transforms
inhibitors
Carbon steel
corrosion
steels
Corrosion
Adsorption
Steel corrosion
adsorption
Corrosion inhibitors
Electrochemical impedance spectroscopy
Adsorption isotherms
Density functional theory
Sulfur
polarization
Nitrogen
thiols
Atoms
Molecules

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Metals and Alloys
  • Mechanics of Materials

Cite this

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title = "Corrosion inhibition of mild steel in 1.0 M HCl by amino compound: Electrochemical and DFT studies",
abstract = "The purpose of this study was to examine the inhibitory effect of 4-amino-5-methyl-4H-1, 2, 4-triazole-3-thiol (AMTT) on the corrosion of mild steel in 1.0 M HCl solution using weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The results indicate that AMTT performed as a good mixed-type inhibitor for mild steel corrosion in a 1.0 M HCl solution, and the inhibition efficiencies increased and tend to saturate with inhibitor concentration. Potentiodynamic polarization results showed that AMTT is a mixed-type inhibitor. Adsorption of AMTT molecules is a spontaneous process, and its adsorption behavior obeys Langmuir's adsorption isotherm model. The reactivity of AMTT was analyzed through theoretical calculations based on density functional theory. Results showed that the reactive sites were located on the nitrogen and sulfur (N1, N2, and S) atoms.",
author = "Musa, {Ahmed Y.} and Mohamad, {Abu Bakar} and Kadhum, {Abdul Amir H.} and Takriff, {Mohd Sobri}",
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T1 - Corrosion inhibition of mild steel in 1.0 M HCl by amino compound

T2 - Electrochemical and DFT studies

AU - Musa, Ahmed Y.

AU - Mohamad, Abu Bakar

AU - Kadhum, Abdul Amir H.

AU - Takriff, Mohd Sobri

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N2 - The purpose of this study was to examine the inhibitory effect of 4-amino-5-methyl-4H-1, 2, 4-triazole-3-thiol (AMTT) on the corrosion of mild steel in 1.0 M HCl solution using weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The results indicate that AMTT performed as a good mixed-type inhibitor for mild steel corrosion in a 1.0 M HCl solution, and the inhibition efficiencies increased and tend to saturate with inhibitor concentration. Potentiodynamic polarization results showed that AMTT is a mixed-type inhibitor. Adsorption of AMTT molecules is a spontaneous process, and its adsorption behavior obeys Langmuir's adsorption isotherm model. The reactivity of AMTT was analyzed through theoretical calculations based on density functional theory. Results showed that the reactive sites were located on the nitrogen and sulfur (N1, N2, and S) atoms.

AB - The purpose of this study was to examine the inhibitory effect of 4-amino-5-methyl-4H-1, 2, 4-triazole-3-thiol (AMTT) on the corrosion of mild steel in 1.0 M HCl solution using weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization. The results indicate that AMTT performed as a good mixed-type inhibitor for mild steel corrosion in a 1.0 M HCl solution, and the inhibition efficiencies increased and tend to saturate with inhibitor concentration. Potentiodynamic polarization results showed that AMTT is a mixed-type inhibitor. Adsorption of AMTT molecules is a spontaneous process, and its adsorption behavior obeys Langmuir's adsorption isotherm model. The reactivity of AMTT was analyzed through theoretical calculations based on density functional theory. Results showed that the reactive sites were located on the nitrogen and sulfur (N1, N2, and S) atoms.

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