Gold alloy for firing on porcelain for dental purposes

Details Gold alloy for firing on porcelain for dental purposes Gold alloy for firing on porcelain for dental purposes

1976-07-06

1977-12-13

Lovell, C.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C22C 502

Patent

active

040626768

ABSTRACT:
Gold alloys for firing on porcelain for dental purposes are prepared from 60 to 90 weight % gold, 5 to 35 weight % platinum, 0.1 to 3 weight % indium, 0 to 10 weight % palladium, 0.5 to 3 weight % rhodium, 0 to 3 weight % tin, 0.1 to 2 weight % tantalum and/or tungsten and 0.3 to 2 weight % zinc, the weight ratio of the platinum group metals to zinc to tantalum and/or tungsten are 15-30:1:0.5-1.3.

REFERENCES:
patent: 1987452 (1935-01-01), Taylor
patent: 2980998 (1961-04-01), Coleman et al.
patent: 3413723 (1968-12-01), Wagner et al.
patent: 3666540 (1972-05-01), Burnett

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