Process for obtaining a composite material and composite...

Details Process for obtaining a composite material and composite... Process for obtaining a composite material and composite...

C - Chemistry, Metallurgy

25

D

117/114.1, 204/2

C25D 3/48 (2006.01) A44C 21/00 (2006.01) B32B 15/00 (2006.01) C25D 5/50 (2006.01)

Patent

CA 1203723

PROCESS FOR OBTAINING A COMPOSITE MATERIAL AND COMPOSITE MATERIAL OBTAINED BY SAID PROCESS ABSTRACT A process for producing a composite material comprising a base having a nickel surface and a gold layer metallurgically bonded to the nickel of the base and having sufficient nickel to increase the hardness of the gold layer but insufficient to significantly destroy the distinctive colour of the gold layer comprises depositing the gold layer on the nickel and annealing the composite structure to provide the metallurgical bond between the nickel and gold and to interdiffuse said metals, and the composite structure obtained by said process. The composite material is particularly useful as a coinage structure.

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