The corrosion inhibition characteristics of Garcinia indica extract (GIE) on the corrosion of 6063 aluminium in 2.0M phosphoric acid solution were studied by using potentiodynamic polarization using Tafel extrapolation technique and electrochemical impedance spectroscopy (EIS) techniques at different temperatures and at different concentrations of inhibitor. Kinetic parameters and thermodynamic parameters were evaluated and discussed in detail. Inhibition efficiency increased with extract concentration and increased with temperature. The adsorption of GIE on metal surface obeyed Langmuir adsorption isotherm. GIE acted as mixed inhibitor in phosphoric acid solution and followed chemisorption on the surface of 6063 Al alloy.
|International Journal of Applied Engineering Research
|78 Special Issue
|Published - 01-01-2015
All Science Journal Classification (ASJC) codes
- General Engineering