Journal
PROGRESS IN ORGANIC COATINGS
Volume 75, Issue 4, Pages 456-462Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2012.06.009
Keywords
Natural corrosion inhibitor; Thyme; Mild steel; Adsorption isotherm
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The aqueous extract of Thyme leaves was investigated for its efficacy as corrosion inhibitor for mild steel in 2 M HCl using weight loss measurements and various electrochemical techniques. Experimental results show that corrosion inhibition efficiency increases with concentration of the Thyme leaves extract. A corrosion inhibition efficiency of 84% was achieved in 2 M HCl. Polarization studies show that Thyme leaves extract acts as a mixed inhibitor. The adsorption of Thyme leaves extract on the steel surface is found to follow Langmuir adsorption isotherm. (C) 2012 Elsevier B.V. All rights reserved.
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