Grape Pomace Extracts as Green Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid Solutions

The inhibitive action of grape pomace extracts against the corrosion of C-steel in a 1 mol L-1 HCl solution was investigated using electrochemical impedance spectroscopy, potentiodynamic polarization curves, weight loss measurements and surface analysis. Hydroalcoholic extracts of grape pomace were...

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Bibliographic Details
Published in:International journal of electrochemical science 2012-12, Vol.7 (12), p.11941-11956
Main Authors: da Rocha, J.C., Gomes, J.A.C. Ponciano, D'Elia, E., Cruz, A.P. Gil, Cabral, L.M.C., Torres, A.G., Monteiro, M.V.C.
Format: Article
Language:English
Subjects:
by-product
C-steel
EIS
natural products
polarization
weight loss
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Summary:The inhibitive action of grape pomace extracts against the corrosion of C-steel in a 1 mol L-1 HCl solution was investigated using electrochemical impedance spectroscopy, potentiodynamic polarization curves, weight loss measurements and surface analysis. Hydroalcoholic extracts of grape pomace were analyzed in different concentrations and were found to act as effective corrosion inhibitors for the tested system. The inhibition efficiency increased with increasing extract concentration and decreased with temperature. The adsorption of components of the grape pomace extracts on the surface of the C-steel followed the Langmuir adsorption isotherm.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)16516-3