A process for preparing a coating and anode for use in such a method

The invention relates to a method for producing a corrosion-resistant and / or oxidation-resistant coating, which is deposited on a surface of a substrate at least one metal of the platinum group, particularly platinum and / or palladium, or an alloy based on at least one metal of the platinum group by electroplating, and wherein then a aluminizing the electroplated substrate so is performed. According to a first aspect of the invention, the galvanic deposition of the or each metal of the platinum group or the corresponding alloy is carried out in an at least two-stage deposition process, wherein in a first stage of the deposition a voltage applied to the electroplating current, starting from an initial value, continuously or stepwise in a maximum value is increased, and wherein the voltage applied to the electroplating current is kept constant at the maximum value in a second stage of the deposition. According to a second aspect of the invention, the galvanic deposition of the or each metal of the platinum group or the corresponding alloy is effected using at least one open-cell or open-mesh or porous anode, wherein a relative movement during the galvanic deposition, on the one hand between a galvanic bath and on the other hand substrate, and the or each open-cell or open-mesh or porous anode is established. Especially ...