Corrosion inhibition of mild steel by Datura metel in acidic medium

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.

Citation

Sethuraman, M.G. and Bothi Raja, P. (2005), "Corrosion inhibition of mild steel by Datura metel in acidic medium", Pigment & Resin Technology, Vol. 34 No. 6, pp. 327-331. https://doi.org/10.1108/03699420510630345