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, Page 52-62 PDF (876.5 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jbes.2024.369586 | ||||
 View on SCiNiTO | ||||
| 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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