Coated article having a base of age-hardened metal

Details Coated article having a base of age-hardened metal Coated article having a base of age-hardened metal

1989-05-08

1990-09-11

Zimmerman, John J.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

4273839, C22F 108, C22F 110, C22F 114, C21D 900

Patent

active

049560263

ABSTRACT:
A structure comprising a base of an age-hardened alloy having on at least part of the surface thereof a layer of precious metal. The precious metal, e.g. gold, contains amounts of nickel grading downwardly from the inner surface of the precious metal layer such that the outer surface contains about 1% to about 10% nickel. The process of making such a structure is also disclosed.

REFERENCES:
patent: 2608753 (1952-09-01), Mooradian
patent: 3134701 (1964-05-01), Evans et al.
patent: 3157539 (1964-11-01), Dreher
patent: 3607150 (1971-04-01), McGinn
patent: 3622285 (1971-11-01), Hayes
patent: 4465742 (1984-08-01), Nagashima et al.
patent: 4480014 (1984-10-01), Milligan et al.
patent: 4521257 (1985-06-01), Gevetter et al.
patent: 4551184 (1985-11-01), Bell et al.
Russell, R. J., "Properties of Inlay Clad Wrought Gold Alloys", Solid State Technology, Aug. 1976, pp. 34-48.

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