Modification of Electrophysical Properties of Dense Anodic Alumina by Surfactant Addition to Anodizing Electrolyte

Abstract

The oxidation kinetics and chemical composition of dense anodic alumina obtained in electrolytes with surfactant additives were studied. Organic compounds from the class of alcohols were used as surfactants. Experimental data on the effect of surfactants on the anodic oxidation kinetics of aluminum were obtained by taking polarization curves. The chemical composition of the films was studied by the SIMS method. The surfactant introduction into the anodizing electrolyte has been shown to increase the insulation resistance and breakdown voltage of the films obtained due to the reduction of the number of hydroxide ions injected into the oxide film from the electrolyte.