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Chemical Engineering Communications Volume 208, 2021 - Issue 12
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Research Article

Study of the corrosion and inhibition mechanism for carbon steel and zinc alloys by an eco-friendly inhibitor in acidic solution

M. Kiloa Department of Chemistry, Faculty of Science, Beirut Arab University, Beirut, Lebanon
,
H. T. Rahala Department of Chemistry, Faculty of Science, Beirut Arab University, Beirut, LebanonCorrespondence[email protected]
,
Mohammad H. El-Dakdoukia Department of Chemistry, Faculty of Science, Beirut Arab University, Beirut, Lebanon
&
A. M. Abdel-Gaberb Department of Chemistry, Faculty of Science, Alexandria University, Ibrahimia, Alexandria, Egypt
Pages 1676-1685 | Published online: 28 Aug 2020
 
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Abstract

The inhibitory nature, thermodynamics and adsorptive properties of Phaseolus vulgaris L. extract, known as Fasolia seed extract were evaluated for carbon steel and zinc alloy corrosion in 0.5 M HCl using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Theoretical fittings for kinetic-thermodynamic and Flory–Huggins models have been studied in order to elucidate the mode of adsorption of P. vulgaris L. seed (PS) extract on zinc alloy and carbon steel. The findings have shown that the mechanism of adsorption occurs through electrostatic interactions between the extract molecules and the metal surface.

Disclosure statement

No potential conflict of interest was reported by the authors.

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