Palladium/silver alloy for use with dental procelains

Details Palladium/silver alloy for use with dental procelains Palladium/silver alloy for use with dental procelains

1980-08-04

1982-09-21

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75134C, 75172G, C22C 3006

Patent

active

043505260

ABSTRACT:
A palladium/silver alloy for use in making porcelain coated dental restorations comprises 45-60 percent palladium, 25-45 percent silver, 3-15 percent tin and/or indium, 0.3-9.0 percent zinc, 0.1-1.0 percent silicon, up to 0.25 percent rhenium and/or iridium, and up to 5 percent in total of one or more of copper, magnesium, gallium and ruthenium. The dental restorations obtained by firing porcelain against castings of this alloy exhibit freedom from discoloration, and excellent bond strength is are obtained between the porcelain coating and the underlying alloy casting.

REFERENCES:
patent: 3929474 (1975-12-01), Ingersoll
patent: 3929475 (1975-12-01), Ingersoll

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