Method of producing alloyed powders for dental amalgams

Details Method of producing alloyed powders for dental amalgams Method of producing alloyed powders for dental amalgams

1988-05-23

1989-08-22

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder shape or size characteristics

419 30, 419 33, 419 53, 419 54, 419 68, 420502, B22F 100

Patent

active

048594121

ABSTRACT:
An economical alloyed powder for dental amalgams exhibiting good working properties is obtained from pressed and sintered molded bodies by mechanical comminution. The formed body is produced by mixing and pressing powders of elemental silver, copper and tin with a subsequent sintering between 150.degree. C. and the solidus temperature of the alloy being formed. The sintering is performed until a homogeneous distribution of the tin has been achieved in the silver and copper particles.

REFERENCES:
patent: 4030918 (1977-06-01), Sung et al.
patent: 4080199 (1978-03-01), Sung et al.
patent: 4453977 (1984-06-01), Burns et al.
patent: 4479823 (1984-10-01), Hohmann

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