A method of electrochemical polishing of an aluminum substrate to obtain a specular surface of said substrate.

摘要

A procedure for removing / reducing the directionality or anisotropy of a surface and to specular on a substrate material consisting of aluminum or an aluminum alloy, characterized the surface because the substrate material is chemically etched, preferably using a solution comprising phosphoric acid, after which the substrate material is subjected to electrochemical polishing by using a solution which may preferably consist of phosphoric acid and where the substrate material is subjected to a chemical etching and new electrochemical polishing directly after the first treatment and wherein the surface of the substrate material is not exposed to air between the etching and the electrochemical polishing.