Specialized metallurgical processes – compositions for use therei – Compositions – Loose particulate mixture containing metal particles
Patent
1978-08-24
1980-11-25
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Compositions
Loose particulate mixture containing metal particles
75 05R, 148 131, B22F 100, B22F 900
Patent
active
042356318
ABSTRACT:
A corrosion-resistant dental alloy shows improved handling characteristics during the filling of a dental cavity with an amalgam of the alloy. The alloy particles comprise a mixture of silver, tin and copper particles having a mean particle size of between about 20 and 26.5 microns, and further having a particle size distribution such that substantially all of the particles fall within a particle size range of from about 10 to 52 microns. The particles have a surface area ranging between about 0.22 m.sup.2 /gm and 0.31 m.sup.2 /gm. The alloy, after amalgamation with mercury, retains a corrosion resistance comparable to that of spherical particles having substantially the same composition and having a surface area of about 0.21 m.sup.2 /gm, while retaining handling characteristics comparable to those of flake-like particles also having substantially the same composition and having a surface area of at least about 0.33 m.sup.2 /gm. The copper and silver content of the particles may be higher at their surface than in the interior thereof.
REFERENCES:
patent: 3841860 (1974-10-01), Wolf
patent: 3871876 (1975-03-01), Asgar et al.
patent: 3980472 (1976-09-01), Asgar et al.
patent: 3997327 (1976-12-01), Tolliver et al.
patent: 3997328 (1976-12-01), Greener
patent: 3997329 (1976-12-01), Aliotta et al.
patent: 3997330 (1976-12-01), Aliotta et al.
patent: 4008073 (1977-02-01), Kropp
patent: 4080199 (1978-03-01), Sung et al.
Alcuri, Jr. Louis F.
Aliotta Joseph
Engelhard Minerals & Chemicals Corporation
Lewis Michael L.
Rutledge L. Dewayne
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