Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1976-03-30
1977-04-05
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75134C, 75134T, C22C 3002, C22C 3004
Patent
active
040159817
ABSTRACT:
The alloy for filling tooth cavity contains the following elements, in per cent by weight: gallium, 36 - 40; tin, 26 - 27, and copper, 34 - 37. Said compound is prepared by mixing 40 - 45 per cent of a liquid gallium--tin alloy containing 11 per cent by weight of tin, with 55 - 60 per cent by weight of powdered copper-tin alloy (Cu.sub.3 Sn) having particle size not exceeding 40 microns. Said powder should contain particles sizing less than 20 microns in the quantity of 55-70 per cent by weight.
The proposed compound has both good elasticity and high strength; it is easily filled into the tooth cavity and can be readily shaped, and finally it can work in the mouth cavity for lengthy periods of time.
REFERENCES:
patent: 2864695 (1958-12-01), Smith et al.
Smith, D. L., et al.; The Journal Of The American Dental Association "Some Physical Properties of Gallium-Copper-Tin Alloys" vol. 53 No. 6, pp. 677-685; Dec., 1956.
Karalnik Dmitry Mikhailovich
Kuptsova Alla Ivanovna
Obukhova Galina Zakharovna
Pikunov Mikhail Vladimirovich
Rogova Svetlana Tanovna
Lewis Michael L.
Rutledge L. Dewayne
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