Abstract

ELKHOTFI, Y.; FORSAL, I.; RAKIB, E. M.  and  MERNARI, B.. The Inhibition Action of Essential Oil of J. Juniperus Phoenicea on the Corrosion of Mild Steel in Acidic Media. Port. Electrochim. Acta [online]. 2018, vol.36, n.2, pp.77-87. ISSN 0872-1904.  https://doi.org/10.4152/pea.201802077.

Essential oil of Juniperus phoenicea (Cupressaceae) is extracted from the natural plant collected in Morocco. Extracted by distillation, its inhibiting action on the corrosion of mild steel in 1 M acidic media has been investigated by weight loss and various electrochemical techniques. Obtained results reveal that this naturally occurring substance is a very good inhibitor. The inhibition efficiency was found to increase with the oil content, attaining 83% at 1500 ppm. The oil of Juniperus phoenicea acts as a mixed-type inhibitor. The adsorption isotherm and the thermodynamic data of adsorption and activation are herein determined and discussed.

Keywords : Steel; acid solution; weight loss; acid corrosion; adsorption.

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