Abstract
Corrosion behavior of iron in hydrochloric acid solution was studied using weight loss as well Scanning electron microscopy study without and with clove oil. The percentage inhibition efficiency increases with increasing clove oil concentration. All the data revel that the oil acts as an excellent inhibitor for the corrosion of iron in HCl solution. Thermodynamic, kinetic parameters and equilibrium constant for adsorption process were calculated from the experimental data. The adsorption of clove oil on experimental metals was found to follow the Langmuir adsorption isotherm at all the concentration studies. Scanning electron microscope (SEM), investigations also indicate that clove oil greatly lowers the dissolution currents.
Highlights
The corrosion inhibition efficiency has been closely related to the inhibitor adsorption abilities and the molecular properties of different kinds of organic compounds [1,2,3,4,5]
Effect of inhibitor concentration on iron corrosion by weight loss method: Tables (1-5) show the values of inhibition efficiency (IE %), surface coverage (θ) and corrosion rate obtained at different concentrations of the inhibitor in 0.5N HCl for 1 to 5 days immersion period
Kinetics of iron corrosion in HCl solution with and without inhibitor: Figures 2-3 show the dependence of log Wf as a function of time
Summary
The corrosion inhibition efficiency has been closely related to the inhibitor adsorption abilities and the molecular properties of different kinds of organic compounds [1,2,3,4,5]. Keyword: Corrosion, Scanning electron microscope (SEM), Clove oil, Langmuir adsorption isotherm, Kinetics parameters. This aroused the interest of authors to select the clove oil as a corrosion inhibitor for iron in acidic medium.
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