PROCESS FOR THE PRODUCTION OF GOLD-COLORED SURFACES OF ALUMINUM OR ALUMINUM ALLOYS BY MEANS OF SILVER SALT-CONTAINING FORMULATIONS

摘要

The invention relates to a method for producing gold-coloured aluminium oxid e 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 workpiece s produced by said method for decorative purposes. The invention further relat es to an electrolyte solution for the gold coloration of the oxidised surface o f 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.