Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1520972 | Materials Chemistry and Physics | 2015 | 14 Pages |
Abstract
Alcohol and water extracts of the leaves of Pimenta Dioica (PD) have been investigated as non toxic corrosion inhibitors for mild steel in acidic medium (0.5Â M and 1Â M HCl). Corrosion rates were evaluated at 303Â K, 308Â K and 313Â K using electrochemical impedance spectroscopy and polarization techniques. Basic computational calculations for the component molecules and adsorption studies were also carried out for estimating the energies of frontier orbitals and the mechanism of corrosion inhibition. Electrochemical techniques reveal that PD extracts exhibit excellent inhibition efficiency and function as mixed type inhibitor at all these temperatures. Adsorption studies showed that the process follows Langmuir adsorption isotherm.
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Materials Science
Electronic, Optical and Magnetic Materials
Authors
K.K. Anupama, K. Ramya, K.M. Shainy, Abraham Joseph,