Palladium alloy containing germanium and/or lithium and dental r

Details Palladium alloy containing germanium and/or lithium and dental r Palladium alloy containing germanium and/or lithium and dental r

1988-11-15

1990-04-17

Rutledge, L. Dewayne

Alloys or metallic compositions

Palladium base

420464, C22C 504

Patent

active

049178610

ABSTRACT:
Dental restorations are made of a palladium alloy which consists essentially of, on a weight basis, 50-85 percent palladium; 5-40 percent of at least one metal selected from the group consisting of copper and cobalt; 1-15 percent gallium; up to 5 percent of a modifier selected from the group consisting of nickel, gold, indium, ruthenium, tin and mixtures thereof; from 0.005 up to 1 percent, ordinarily less than about 0.2 percent, of an oxygen scavenging component which is a member selected from the group consisting of germanium, lithium, and mixtures thereof; and up to 0.5 percent of a grain refiner selected from the group consisting of rhenium and iridium. The alloy is free of boron.

REFERENCES:
patent: 4201577 (1980-05-01), Ingersoll et al.
patent: 4336290 (1982-06-01), Tsai
patent: 4387072 (1983-06-01), Schaffer
patent: 4399096 (1983-08-01), Agarwal et al.
patent: 4518564 (1985-05-01), Prasad
patent: 4608229 (1986-08-01), Lanam et al.
patent: 4717539 (1988-01-01), Morisey

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