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The effect of some phthalimide derivatives on corrosion behavior of copper in nitric acid
Faculty
Science
Year:
2006
Type of Publication:
Article
Pages:
216-223
Authors:
Fouda, A. S, El-Aal, A. Abd, Kandil, A. B
DOI:
10.1016/j.desal.2005.11.030
Journal:
DESALINATION ELSEVIER SCIENCE BV
Volume:
201
Research Area:
Engineering; Water Resources
ISSN
ISI:000243254800021
Keywords :
corrosion, phthalimide derivatives, nitric acid, weight loss, galvanostatic polarization
Abstract:
The inhibition effect of some phthalimide derivatives on the corrosion of copper in acidic media has been investigated by weight loss and polarization techniques. Results obtained revealed that these organic compounds are good inhibitors. Galvanostatic polarization studies showed that these compounds are mixed-type inhibitors. The adsorption of these inhibitors on the copper surface obeys Temkin's adsorption isotherm. The effect of temperature on the corrosion behavior of copper in nitric acid in presence of definite concentration of the inhibitors was studied in the temperature range 30-45 degrees C. The associated activation corrosion and free adsorption energies have been determined.
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