Surface-hardened objects of alloys of platinum and palladium and

Details Surface-hardened objects of alloys of platinum and palladium and Surface-hardened objects of alloys of platinum and palladium and

1994-03-15

1996-05-21

Kastler, Scott

Metal treatment

Stock

Noble metal base

420466, C22C 500

Patent

active

055185568

ABSTRACT:
Hard and scratch-proof objects of platinum and palladium or their alloys comprise a boron-containing surface layer which is 20 to 500 .mu.m thick and contains 0.3 to 1.5% by weight boron embedded in the metal lattice.

REFERENCES:
patent: 4828933 (1989-05-01), McGill et al.
patent: 4960647 (1990-10-01), Grundy
Patent Abstracts of Japan, Nov. 13, 1991, vol. 15, No. 445, Surface Hardened Color Platinum Alloy.
Chemical Abstract, Sep. 6, 1982, vol. 97, No. 10, p. 312, Bronzing Metals.
Patent Abstracts of Japan, Jun. 25, 1982.
Chemical Abstracts, Apr. 30, 1979, vol. 90, No. 18.
Patent Abstracts of Japan, Dec. 6, 1984, vol. 8, No. 266.
Derwent Database WPI, Aug. 16, 1991, Seiko Instruments Inc.
Derwent Database WPI, Mar. 14, 1990, Tractor Comb Motors.

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