Adsorption inhibitive properties of Rosmarinus officinalis L. on aluminium AA8011 alloy in 1.0M HCl

The adsorption mechanism of Rosmarinus officinalis L. as corrosion inhibitor for Al AA8801 alloy in 1.0M HCl was studied using gravimetric method and thermodynamics studies at 303, 313, 323 333K. Inhibitor concentrations ranged between 0 1000mg/L. Results show that the is via physisorption, generally endothermic accompanied by a resulting decrease disorder. efficiency largely decreased with increase temperature, concentration extract. presence an external magnetic field enhanced dissolution passivating Al2O3 films, thereby increasing rate.