The inhibition effect of three green inhibitors, Argan Oil (AO), Cosmetic Argan Oil (CAO)
and Argan Hulls Extract (AHE), against copper corrosion in 2 M H3PO4 containing 3·10–1 M
NaCl solutions were evaluated using conventional weight loss, potentiodynamic
polarization, and electrochemical impedance spectroscopy. The weight loss results showed
that all the three green inhibitors are excellent corrosion inhibitors, electrochemical
polarizations data discovered the mixed mode of inhibition and the results of
electrochemical impedance spectroscopy have shown that the change in the impedance
parameters, charge transfer resistance and double layer capacitance, with the change in
concentration of the inhibitors employed is due to the adsorption of the molecule leading to
the formation of a protective layer on the surface of copper. The values of the inhibition
efficiency calculated from these techniques are in reasonably good agreement.
Keywords: Argan hulls extract, Argan oil, cosmetic Argan oil, corrosion, inhibition,

Title

Int. J. Corros. Scale Inhib.

Publisher

INTERNATIONAL JOURNAL OF CORROSION AND SCALE INHIBITION

Publisher Country

Russia

Indexing

Scopus

Impact Factor

None

Publication Type

Both (Printed and Online)

Volume

5

Year

2016

Pages

159–171