Corrosion Inhibition by Ethyl Acetate Extract from Thymelaea Microphylla Plant in 1 M Hydrochloric Acid Solution

Abstract

This work was prepared to research the corrosion inhibition of mild steel X52 by Thymelaea microphylla extract in 1M HCl solution, as a cost-effective and environmentally benign corrosion inhibitor, using weight loss measurement, polarization, and electrochemical impedance spectroscopy (EIS) techniques. Polarization studies presented that Thymelaea microphylla extract was anodic-type inhibitor in 1M HCl. The inhibition process is attributed to the creation of an adsorbed film of Thymelaea microphylla extract on the metal surface which protects the metal against corrosion. Inhibitor adsorption was found on the steel surface according to Langmuir adsorption.