Inhibition of the acid corrosion of aluminium with some morpholine and thiosemicarbazide derivatives

Abstract

The inhibitive effect of some morpholine and thiosemicarbazide derivatives on the dissolution of aluminium in 2M HCI has been investigated by using thermometric, weight loss and hydrogen evolution techniques. The effect of the inhibitors on the protection efficiency and the corrosion rate were determined at various inhibitor concentrations and temperatures. It was observed that the percentage inhibition of aluminium increases with the increase of inhibitor concentration and decreases with rise of reaction temperature. Retardation of dissolution is due to weak adsorption of the additives on the metal surface. The order of inhibition efficiency of the inhibitors used depends on the number of adsorption sites in the molecule, their charge density and molecular size.

Citation

Ahmed, A.I., Basahel, S.N. and Khalil Chemistry, R.M. (1988), "Inhibition of the acid corrosion of aluminium with some morpholine and thiosemicarbazide derivatives", Anti-Corrosion Methods and Materials, Vol. 35 No. 8, pp. 4-8. https://doi.org/10.1108/eb020680