Studies on the Anodic Oxidation of Aluminum (III) : Anodic Oxidation on Aluminum in Aqueous Solution Containing Sulfuric Acid and Potassium Permanganate etc.

摘要

Anodic oxidation of aluminum in aqueous solutions containing sulfuric acid and one of various salts was examined. The various salts used were potassium permanganate, potassium dichromate, manganese sulfate and lead acetate. Results obtained were as follows: Brownish or yellowish oxide layers were obtained by adding potassium permanganate. Additions of potassium dichromate and manganese sulfate were not effective. Yellowish oxide layers were obtained by adding lead acetate and using altenative current at relatively high current density.