METHOD FOR PRODUCING GOLD-COLOURED SURFACES PERTAINING TO ALUMINIUM OR ALUMINIUM ALLOYS, BY MEANS OF FORMULATIONS CONTAINING SILVER SALT

摘要

The invention relates to a method for producing gold-coloured aluminium oxide layers, whereby the oxidised surface of the aluminium or aluminium alloy is coloured in an electrolyte containing an alkane sulfonic acid and a silver alkane sulfonate by means of an electrolytic method. The invention also relates to using of the gold-coloured aluminium or aluminium alloy workpieces produced by said method for decorative purposes. The invention further relates to an electrolyte solution for the gold coloration of the oxidised surface of aluminium or an aluminium alloy by means of an electrolytic method, and the use of an electrolyte containing a silver alkane sulfonate for the gold coloration of aluminium oxide layers in aluminium and aluminium alloys in an electrolytic method.