Method of manufacturing an aluminum product

Details Method of manufacturing an aluminum product Method of manufacturing an aluminum product

C - Chemistry, Metallurgy

25

D

C25D 3/56 (2006.01) B23K 1/19 (2006.01) B23K 35/02 (2006.01) B32B 15/01 (2006.01) C25D 5/44 (2006.01) B23K 35/28 (2006.01)

Patent

CA 2346587

The invention relates to a method of manufacturing an A1 or Al alloy workpiece, comprising the steps of (a) providing an Al or Al alloy workpiece, (b) pre-treating of the outersurface of the Al or Al alloy workpiece, and (c) plating a metal layer comprising nickel onto said outersurface of the pre-treated Al or Al alloy workpiece, and wherein during step (c) said metal layer comprising nickel is deposited by electroplating both nickel and bismuth using an aqueous bath comprising a nickel-ion concentration in a range of 10 to 100 g/l and a bismuth-ion concentration in the range of 0.01 to 10 g/l. The invention further relates to an aqueous plating bath for use in the method of this invention.

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