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.
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