Investigation of corrosion inhibition properties of caffeine on nickel by electrochemical techniques
Document Type
Article
Publication Date
1-1-2012
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.
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
Divisions
CHEMISTRY
Publication Title
International Journal of Electrochemical Science
Volume
7
Issue
9
Publisher
Electrochemical Science Group
Additional Information
Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA