| abstract |
The invention relates to a method for anticorrosive treatment of a workpiece made of an aluminum material, in particular of an aluminum wrought alloy.n n n According to the invention, the workpiece, which has a surface into which the size of the pores and / or cavities is smaller than 20 μm, is subjected in a first method step to a removal pretreatment with a solution containing sodium hydroxide, that in a next method step In a further process step, small depressions are produced in the surface of the workpiece by treating the workpiece with a fluoride-containing stain, and then by applying a pre-layer and then a chemical-nickel layer becomes. |