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Corrosion inhibition of mild steel by Laurus nobilis leaves extract as green inhibitor

Corrosion inhibition of mild steel by Laurus nobilis leaves extract as green inhibitor The efficiency of Laurus nobilis leaves’ extract as a corrosion inhibitor for mild steel in acidic medium (1 M H2SO4) was investigated by use of the electrochemical techniques potentiodynamic polarization, electrochemical impedance spectroscopy, and polarization resistance measurements. According to the experimental results, L. nobilis extract acts as a good corrosion inhibitor. In the presence of the inhibitor, corrosion potential shifted toward a more negative value than for the blank solution. Inhibitor efficiency increased with increasing inhibitor concentration, as expected. According to the potentiodynamic polarization results the corrosion of mild steel increased with increasing temperature both in the presence and absence of the inhibitor. The activation energy (E a) of the corrosion process was calculated from the variation of corrosion current density with temperature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Corrosion inhibition of mild steel by Laurus nobilis leaves extract as green inhibitor

Research on Chemical Intermediates , Volume 38 (7) – Dec 20, 2011

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References (20)

Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Catalysis; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
DOI
10.1007/s11164-011-0451-3
Publisher site
See Article on Publisher Site

Abstract

The efficiency of Laurus nobilis leaves’ extract as a corrosion inhibitor for mild steel in acidic medium (1 M H2SO4) was investigated by use of the electrochemical techniques potentiodynamic polarization, electrochemical impedance spectroscopy, and polarization resistance measurements. According to the experimental results, L. nobilis extract acts as a good corrosion inhibitor. In the presence of the inhibitor, corrosion potential shifted toward a more negative value than for the blank solution. Inhibitor efficiency increased with increasing inhibitor concentration, as expected. According to the potentiodynamic polarization results the corrosion of mild steel increased with increasing temperature both in the presence and absence of the inhibitor. The activation energy (E a) of the corrosion process was calculated from the variation of corrosion current density with temperature.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Dec 20, 2011

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