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Inhibitive Action of Capparis Spinosa Extract on the Corrosion of Carbon Steel in an Aqueous Medium of Hydrochloric Acid

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Wed, 2015-10-28 10:10 — Ismail Warad
Journal Title, Volume, Page: 
Journal of Mineral Metal and Material Engineering, 2015, 1, 1-7
Year of Publication: 
2015
Authors: 
O. Id El Mouden , A. Anejjar , R. Salghi , S. Jodeh , O. Hamed , I. Warad and R.S. Dassanayake , M. Zougagh
Preferred Abstract (Original): 
Capparidaceae (Capparis spinosa), is a common perennial shrub and woody plant, typically Mediterranean,
largely used in folk medicine in the Mediterranean countries including Morocco. The effect of Capparis Spinosa (CSE) on 
the corrosion inhibition of carbon steel in 1 M hydrochloric acid (HCl) solution was evaluated by several analytical
methods, among these are weight loss method, potentiodynamic polarization and impedance spectroscopy (EIS).
Results showed that CSE inhibits the corrosion of steel and the inhibition is more efficient at high concentration of CSE. 
Results also showed that, the inhibition decrease at higher temperature. Potentiodynamic polarization studies clearly 
reveal that CSE acts as a cathodic inhibitor. The adsorption of Capparis Spinosa on carbon steel was found to obey the
Langmuir adsorption isotherm. The activation energies and enthalpies of the corrosion process of carbon steel in acidic 
medium of CSE were also calculated.