Carbon steel corrosion in HCl in the presence of aqueous extract of Melissa Officinalis | ||
| Journal of Basic and Environmental Sciences | ||
| Volume 2, Issue 2, April 2015, Pages 52-62 PDF (876.5 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jbes.2024.369586 | ||
| Authors | ||
| A. Y. El-Etre; H. E. Megahed; S. M. Refaat | ||
| Chemistry Dept, Faculty of Science, Benha University, Benha, Egypt | ||
| Abstract | ||
| The inhibitive action of the aqueous extract of Melissa officinalis toward the corrosion of C-steel in a 2.0 M HCl solution was investigated using weight loss measurements and Tafel polarization curves . It found that the extract acts as good corrosion inhibitor for tested system. The inhibition efficiency increases with increasing extract concentration. The inhibitive action of the extract is discussed with a view to adsorption of its component s onto the steel surface, making a barrier to mass and change transfer. The adsorption of extract components onto the steel surface was found to be a spontaneous process and to follow the Langmuir adsorption isotherm. | ||
| Keywords | ||
| Steel; Weight loss; Polarization; EIS; Acid inhibition | ||
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