FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION. | ||
| Al-Azhar Bulletin of Science | ||
| Article 26, Volume 2010, Issue 12, December 2010, Pages 363-378 PDF (249.85 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/absb.2010.7388 | ||
| Authors | ||
| SEHAM M. ABDEL MOTAAL* ; NOHA M. AL-QASMI | ||
| Faculty of Applied Science, Umm Al-Qura University, Makkah, KSA | ||
| Abstract | ||
| The inhibiting action of Ficus carica and Olive extracts on the corrosion process of zinc in 2.0 M HCl solution has been investigated by weight loss, open –circuit potential and potentiodynamic polarization measurements. The results revealed that, the highest efficiency (IE%) was observed at 20.0 g/l of inhibitor. Langmuir isotherm was investigated to clarify the nature of adsorption. The values of are low revealed to a physical adsorption of the extracts on the zinc surface. The effect of temperature range (25-55ºC) supporting the proposed physical adsorption. Electrochemical behaviour indicated that the extract act as anodic- type inhibitors. | ||
| Keywords | ||
| zinc; Ficus; olive; acid medium; Inhibitor; Polarization | ||
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