Abstract
The inhibition effect of three oxime compounds of acetone oxime (AO), 2-butanone oxime (BO) and cyclohexanone oxime (CO) on the corrosion of aluminium in HCl solution was studied by weight loss, potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), quantum chemical calculation and molecular dynamics (MD) simulation methods. The results show that all oxime compounds are good inhibitors, and inhibition efficiency follows the order: CO>BO>AO. The adsorption of each inhibitor on aluminium surface obeys Langmuir adsorption isotherm. All these oxime compounds act as cathodic inhibitors. The probable inhibitive mechanism is proposed from the viewpoint of adsorption theory.
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