Based on the observed results, the activation enthalpy (ΔH#) and activation entropy (ΔS#) have been estimated and discussed. Based on Langmuir adsorption model, Capparis decidua adsorption on aluminum surface shows a high regression coefficient value. Results also show a slight decrease of aluminum dissolution upon increasing temperature using Capparis decidua extract. Optimum (95.2%) inhibitor efficiency was found with maximum extract concentration at 45˚C. Results demonstrate effectiveness of Capparis decidua extract as an inhibitor and the efficiency is both concentration and temperature dependent. In addition, surface morphology analysis was performed by applying the technique of Scanning Electron Microscopy (SEM). The study was performed in a 1.0 M solution of sodium hydroxide and was monitored both by measuring mass-loss and by using electro-chemical and polarization methods. ![]() Aluminum corrosion inhibition using Capparis decidua extract has been studied.
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