COATING OF SUBSTRATES MADE OF LIGHT METALS OR LIGHT METAL ALLOYS

摘要

The present invention relates to a method for the production of coated workpieces made of light metal or light metal alloy, said method comprising the steps of: a) electrodeposition of one or more layers containing at least one metal and/or metal alloy selected from the group of aluminum, magnesium, zinc on a substrate of light metal or light metal alloy, the substrate and the layer apply thereto or, in the event of multiple layers, two adjacent layers not consisting of the same metal or the same metal alloy; b) heat treatment of the coated substrate at a temperature between 200°C and 800°C so that at least the surface layer of the substrate and the layer/layers applied in step a) undergo partial and/or complete interdiffusion; and to the coated workpieces produced using said method.