Platinum-palladium alloy

Details Platinum-palladium alloy Platinum-palladium alloy

2008-03-18

2010-06-22

Wyszomierski, George (Department: 1793)

Metal treatment

Stock

Noble metal base

C420S465000, C420S466000

Reexamination Certificate

active

07740720

ABSTRACT:
An alloy for use in jewelry applications is provided that has a composition comprising about 45 to about 55 platinum by weight and about 55 to about 45 percent palladium by weight. The alloy possesses favorable characteristics as compared to pure platinum and pure palladium. Due to these characteristics, the alloy is attractive for use in jewelry applications.

REFERENCES:
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patent: 1545234 (1925-07-01), Cohn
patent: 2279763 (1942-04-01), Sivil
patent: 2005/0284257 (2005-12-01), Osada et al.
patent: 2008/0063556 (2008-03-01), Battaini
patent: 2008/0168799 (2008-07-01), Fogel
H. Renner, Platinum group metals and compounds, in Ullmann's Encyclopedia of Industry Chemistry, Jun. 15, 2001, p. 1, 39-47.
T. Biggs et al. The hardening of platinum alloys for potential jewelry application, Platinum Metals Review, 2005, vol. 49, Issue 1, p. 2-15.
ASM Handbook, vol. 2, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, “Platinum-Palladium Alloys”, 10th edition, 1990, p. 1-18 (18 total).

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