Abstract: The invention relates to a method of producing a corrosion resistant coating system on a cast iron substrate preferably in the shape of a brake disc, the coating system being completed by a thermally sprayed top layer, characterised in that the cast iron substrate is first subjected to activation by means of a pulsed water jet after completion of machining which increases the surface roughness of the surface thus treated, whereupon the surface is nitrocarburized so that a corresponding diffusion layer is formed on it, whereupon the surface is subjected to an oxidation process in a next step and only then the top layer is applied by thermal spraying.

Abstract: A method to produce a wear and corrosion resistant coating system onto a surface of a substrate, preferably a brake disc, comprising the following steps: (1) providing the substrate having the surface made of an iron-based material or a steel material, (2) selecting a dedicated material for producing one or more coating layers of the coating system, (3) producing onto the substrate surface one or more coating layers of the coating system by using a laser cladding process, wherein the dedicated material selected in step (2) is used as source material for the production of the coating layers, and positioning a laser beam with respect to the substrate surface in such a manner that a coating angle is formed between the laser beam and the substrate surface, and maintaining this coating angle during the production of the one or more coating layers at a value between 10° and 30°.

Abstract: Method for producing a mechanically and preferably machined cast iron or grey cast iron surface, in particular on a brake disc, with increased wear and corrosion resistance, characterized in that said surface is subjected to a water jet treatment—usually according to the so-called fluid jet process, which is adjusted so that it completely or at least partially clears the cavities opened by the machining, which contain a graphite inclusion surrounded by the basic structure, so that in the latter case the level of the graphite inclusion lies below the outer surface of the basic structure surrounding the cavity, whereupon a diffusion layer is applied by nitrocarburizing and an oxide layer is applied on the diffusion layer.