Patent ID: 7138065

Claim:
A method for removal of at least one layer area of a corroded part composed of a metal and/or of at least one metal compound, comprising: locally applying a multicomponent cleaning agent to one surface of the corroded part, the cleaning agent having at least one impregnation component that can diffuse into the at least one layer area, and the cleaning agent having at least one activation component; wherein the cleaning agent has, as the at least one impregnation component, at least one metal component composed of a metal or of a metal alloy, or a component which contains metal; heat treating the part with the cleaning agent so that the at least one impregnation component and the at least one activation component form a gaseous compound; wherein the temperature of the thermal treatment allows solution annealing of the part; forming at least one sacrificial zone at least partially in the at least one layer area which is to be removed from the part by the heat treating and by the gaseous compound coming into contact with the part, as a result of which a removal resistance of the at least one layer area is reduced; and removing the at least one layer area with the at least one sacrificial zone.