FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION. | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 26, Volume 21, Issue 2-A, December 2010, Page 363-378 PDF (249.85 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2010.7388 | ||||
 View on SCiNiTO | ||||
| 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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