Effective corrosion inhibition of mild steel in acidic medium using inexpensive kermes natural dye: experimental and quantum chemical study
Ibrahim, Magdy; N.F. El Boraei; Shimaa Abdel Halim;
Abstract
Abstract
Purpose – The purpose of this paper is to test the Natural Kermes dye (NKD) as a cheap and stable corrosion inhibitor for mild steel in 1.0 M HCl
and its adsorption mechanism on the steel surface.
Design/methodology/approach – The inhibition action of NKD was studied using AC impedance, potentiodynamic polarization, scanning electron
microscope (SEM) and UV-visible spectra techniques complemented with quantum study.
Findings – Here, the authors show that addition of NKD inhibits effectively the corrosion of steel in HCl solution via its adsorption on the steel
surface. The inhibition efficiency of NKD increases with increase in its concentration and decreases with temperature. Potentiodynamic results
revealed that NKD acts as a mixed–type inhibitor. Thermodynamic parameters for corrosion and adsorption process were obtained from the
experimental data. Moreover, the experimental inhibition efficiencies were correlated with the electronic properties of NKD using density functional
theory.
Originality/value – To the best of the authors’ knowledge, this is the first report showing the effect of NKD on the corrosion inhibition of steel.
Purpose – The purpose of this paper is to test the Natural Kermes dye (NKD) as a cheap and stable corrosion inhibitor for mild steel in 1.0 M HCl
and its adsorption mechanism on the steel surface.
Design/methodology/approach – The inhibition action of NKD was studied using AC impedance, potentiodynamic polarization, scanning electron
microscope (SEM) and UV-visible spectra techniques complemented with quantum study.
Findings – Here, the authors show that addition of NKD inhibits effectively the corrosion of steel in HCl solution via its adsorption on the steel
surface. The inhibition efficiency of NKD increases with increase in its concentration and decreases with temperature. Potentiodynamic results
revealed that NKD acts as a mixed–type inhibitor. Thermodynamic parameters for corrosion and adsorption process were obtained from the
experimental data. Moreover, the experimental inhibition efficiencies were correlated with the electronic properties of NKD using density functional
theory.
Originality/value – To the best of the authors’ knowledge, this is the first report showing the effect of NKD on the corrosion inhibition of steel.
Other data
Title | Effective corrosion inhibition of mild steel in acidic medium using inexpensive kermes natural dye: experimental and quantum chemical study | Authors | Ibrahim, Magdy ; N.F. El Boraei ; Shimaa Abdel Halim | Keywords | Corrosion, Mild steel, A.C. impedance, Kermes dye, Quantum study Paper type | Issue Date | 2018 | Publisher | Emerald Publishing Limited | DOI | DOI 10.1108/ACMM-04-2018-1927 |
Attached Files
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