Investigation of corrosion inhibition properties of caffeine on nickel by electrochemical techniques

Ebadi, M. and Mahmoudian, M.R. and Leng, S.Y. and Basirun, Wan Jefrey (2012) Investigation of corrosion inhibition properties of caffeine on nickel by electrochemical techniques. International Journal of Electrochemical Science, 7 (9). pp. 8052-8063. ISSN 1452-3981

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Official URL: http://www.electrochemsci.org/papers/vol7/7098052....

Abstract

The corrosion behaviour of Ni surface in the absence and presence of caffeine in 3.5% NaCl solution is studied using electrochemical impedance spectroscopy, open circuit potential, electrochemical noise analysis and linear scan voltammetry. The corrosion rate of the nickel surface decreases and the inhibition efficiency increases from 93.7% to 96.8% with the increase of caffeine in the corrosive solution. The FESEM images show that the caffeine addition in the corrosive solution reduces the formation of pits and cavities on the nickel surface.

Item Type: Article
Additional Information: Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Caffeine, Electro-corrosion techniques, Inhibitor efficiency, Nickel, Copper corrosion, Mild-steel, Aluminum corrosion, Anodic-dissolution, Magnetic-field, Acid solutions, Part i, Derivatives, Media, Electrodeposition
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Miss Malisa Diana
Date Deposited: 25 Jul 2013 00:25
Last Modified: 31 Jan 2019 08:04
URI: http://eprints.um.edu.my/id/eprint/7534

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