Formation of white oxide coatings on aluminum using electrochemical method

Abstract

The possibility of obtaining white oxide coatings on aluminum was investigated. Until now, an industrial method of producing white and opaque oxide coatings on aluminum by electrochemical method has not been worked out. In some industries there is a need for a white surface finish of aluminum products. Two methods of obtaining white coatings and three sealing methods have been tested during the work. The quality of coatings has been tested according to standard QUALANOD tests, decorative values were additionally evaluated. The obtained coatings have been compared with transparent oxide coatings on aluminum, which have been obtained by conventional methods.