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Corrosion Inhibitive Effect of 2-(1-(2-Oxo-2H-Chromen-3-Yl) Ethylidene) Hydrazine Carboxamide on Zinc-Aluminum Alloy in 1.8M Hydrochloric Acid

Aladesuyi, O. and Fatile, B. O and Adedapo , E.A. and Ogunboyejo, A. P and Ajanaku , C. O. and Olanrewaju, I. O. and Ajani, O. O. and Ajanaku, K. O. Corrosion Inhibitive Effect of 2-(1-(2-Oxo-2H-Chromen-3-Yl) Ethylidene) Hydrazine Carboxamide on Zinc-Aluminum Alloy in 1.8M Hydrochloric Acid. International Journal of Advanced Research in Chemical Science, 3 (2). pp. 15-21. ISSN 2349-0403

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Abstract

The corrosion inhibition of Zinc-Aluminum alloy in 1.8 M of hydrochloric acid solution by 2-(1-(2-oxo-2H-chromen-3-yl) ethylidene) hydrazine carboxamide was carried out using weight loss method. Zinc-Aluminum coupons were immersed in test solution of blank and solutions of 0.001 M, 0.002 M, 0.003 M and 0.004 M of the inhibitor at room temperature and 50oC consistently for seven days duration. The percentage inhibition efficiency (% I.E) and surface coverage (θ) of the Zinc-Aluminum was calculated and result indicated corresponding increase with concentration of inhibitor. The adsorption isotherm of the process was estimated using four adsorption isotherm theories namely: Langmuir, Freundlich, Temkin and Frumkin. The adsorption studies revealed that Langmuir isotherm (R2 = 0.9997) is the best model for the adsorption of 2-(1-(2-oxo-2H-chromen-3-yl) ethylidene) at room temperature and at 50oC on Zinc-Aluminum surface.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User: Mr E. A Adedapo
Date Deposited: 22 Feb 2016 15:11
Last Modified: 22 Feb 2016 15:11
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/6037

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