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- Publisher
- Emerald Publishing
- Copyright
- Copyright © 2005 Emerald Group Publishing Limited. All rights reserved.
- ISSN
- 0369-9420
- DOI
- 10.1108/03699420510630345
- Publisher site
- See Article on Publisher Site
Abstract
Purpose – To evaluate the corrosion inhibition potential of Datura metel in acid medium on mild steel (MS) with a view to develop green corrosion inhibitors. Design/methodology/approach – Acid extract of the D. metel was studied for its corrosion inhibitive effect by electrochemical and weight loss methods. Using weight loss measurement data, an attempt has been made to probe the mechanism of inhibitive action by fitting adsorption isotherms. Findings – D. metel has been found to show significant corrosion inhibitive effect in acid medium on MS. Inhibition is through adsorption of the phytoconstituents on MS following Tempkin and Langmuir adsorption isotherms. The results of A.C. impedance and polarisation studies correlate well with the weight loss studies. Originality/value – The plant has been investigated for the first time for its corrosion inhibitive effect. The effect has been studied by proven methods. This green inhibitor can find use in the inhibition of corrosion in industries where MS is used as a material of choice for the fabrication of machinery.
Journal
Pigment & Resin Technology – Emerald Publishing
Published: Dec 1, 2005
Keywords: Corrosion inhibitors; Plants; Steel; Acids