Saccocalyx satureioides as corrosion inhibitor for carbon steel in acid solution

The inhibitory effect of the crude ethyl acetate extract of Saccocalyx satureioides was estimated on the corrosion of carbon steel (X52) in 1 M HCl solution sing weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy techniques....

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Bibliographic Details
Published in:International journal of industrial chemistry 2016-06, Vol.7 (2), p.109-120
Main Authors: Benahmed, M., Djeddi, N., Akkal, S., Laouar, H.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Environmental Chemistry
Industrial Chemistry/Chemical Engineering
Nanochemistry
Polymer Sciences
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Summary:The inhibitory effect of the crude ethyl acetate extract of Saccocalyx satureioides was estimated on the corrosion of carbon steel (X52) in 1 M HCl solution sing weight loss measurement, potentiodynamic polarization, electrochemical impedance spectroscopy and scanning electron microscopy techniques. Potentiodynamic polarization curves indicated that the plants extract behaves as a mixed-type inhibitor. The adsorption of the inhibitor on the carbon steel surface was found to follow Freundlich adsorption isotherm. The free energies, enthalpies and entropies for the adsorption and dissolution process were discussed in details. The inhibiting action increases with increasing concentration of the extract. The results obtained show that the extract of the aerial parts of Saccocalyx satureioides could serve as an effective corrosion inhibitor of carbon steel (X52) in hydrochloric acid medium.
ISSN:2228-5970
2228-5547
DOI:10.1007/s40090-016-0082-z