ABDEL MOTAAL, S., AL-QASMI, N. (2010). FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION.. Al-Azhar Bulletin of Science, 21(Issue 2-A), 363-378. doi: 10.21608/absb.2010.7388
SEHAM M. ABDEL MOTAAL; NOHA M. AL-QASMI. "FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION.". Al-Azhar Bulletin of Science, 21, Issue 2-A, 2010, 363-378. doi: 10.21608/absb.2010.7388
ABDEL MOTAAL, S., AL-QASMI, N. (2010). 'FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION.', Al-Azhar Bulletin of Science, 21(Issue 2-A), pp. 363-378. doi: 10.21608/absb.2010.7388
ABDEL MOTAAL, S., AL-QASMI, N. FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION.. Al-Azhar Bulletin of Science, 2010; 21(Issue 2-A): 363-378. doi: 10.21608/absb.2010.7388
FICUS CARICA AND OLIVE LEAVES AS ENVIRONMENTAL FRIENDLY CORROSION INHIBITORS FOR ZINC IN HCL SOLUTION.
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.
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