Permanent magnetic alloy comprising gold, platinum and cobalt

Details Permanent magnetic alloy comprising gold, platinum and cobalt Permanent magnetic alloy comprising gold, platinum and cobalt

1988-01-29

1989-08-01

McDowell, Robert

Metal treatment

Stock

Magnetic

420509, 420510, C22C 502

Patent

active

048530484

ABSTRACT:
A permanent magnetic alloy mainly composed of gold for making magnetic personal ornaments comprises 50 to 75 weight % gold, 12 to 40 weight % palladium and 3 to 15 weight % cobalt. The alloy is gold or white gold in color and can be plastically deformed to a desired shape. The 12, 14 and 18 Karat gold alloys have maximum energy products of 3.0, 2.2 and 0.9 MGOe, respectively.

REFERENCES:
patent: 1946231 (1934-02-01), Nowack
patent: 3238040 (1966-03-01), Durer et al.
patent: 3591373 (1971-07-01), Shimizu et al.

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