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The corrosion inhibition of copper in hydrochloric acid solutions by rice bran oil extracted components.
Bulletin of the Faculty of Science Zagazig University • 2011
Publication Information
Authors
A.A.ALI, S.M.Syam, H.E.Megahed and A.A.Abdel-Fattah
Keywords
Not Available
Journal
Bulletin of the Faculty of Science Zagazig University
Publisher
Not Available
Volume
33
Issue
Not Available
Pages
165-181
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
The inhibitive effect of rice bran oil components ( fatty acids, dewaxed oil and wax) on the corrosion of copper in 1 M HCl has been investigated by weight loss and polarization techniques. Potentiodynamic polarization measurement showed that these compounds are mixed-type inhibitors. The adsorption of these inhibitors on copper surface obeys Langmuir adsorption isotherm. The effect of temperature on the corrosion behavior of copper in hydrochloric acid in presence of the most effective concentrations of the inhibitors was studied in temperature range ( 25 - 60 C). The associated activation energy of copper corrosion as well as energy of adsorption of the studied compounds has been determined.