Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1984-11-13
1985-11-05
Rutledge, L. Dewayne
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
204 371, C22F 114
Patent
active
045511845
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 color 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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Bell James A. E.
Conard Bruce R.
Hope Douglas A.
Inco Limited
Kenny Raymond J.
Leff Miriam W.
Rutledge L. Dewayne
Zimmerman John J.
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