Abstract
Author(s): P. Deivanayagam, I. Malarvizhi, S. Selvaraj
The Inhibitive nature of Wrightia tinctoria leaves extract on copper in 1.0 N Hydrochloric acid environment contains various concentrations of inhibitor with different exposure time and temperature has been investigated by using mass loss measurements. The observed result reveals that the percentage of inhibition efficiency increased with increase of inhibitor concentration and temperature. Thermodynamic parameters Viz; Ea, Qads, Gads, H and S suggests that the adsorption of WTL extract is exothermic, spontaneous and chemisorptions process. The inhibitor follows Langmuir adsorption isotherm. The corrosion product formed on the metal surface confirmed by the spectral studies such as UV, FT-IR and SEM
