Abstract

An electron microscopical study of electropolished aluminium films formed in a variety of different electrolytes is reported. Polishing in various electrolytes produces films which have different morphologies dependent upon the electrolyte used. The films have no common structure for the range of electrolytes used. It appears that the electrolyte needs only to be able to induce adequate ionic conductivity in the surface film for the production of a smooth and bright surface.

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