Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1981-06-09
1983-09-27
Hunt, Brooks H.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75232, 75234, 75235, 501103, 501104, C22C 3000, C04B 3548
Patent
active
044066996
ABSTRACT:
The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepared by blending the powders, pressing or casting the blend into the desired product configuration, and then sintering the casting or compact in an inert atmosphere. In the casting operation, calcium aluminate is preferably added to the admixture in place of a like quantity of zirconia for providing a cement to help maintain the integrity of the sintered product.
REFERENCES:
patent: 3519405 (1970-07-01), Gordon
Ryshkewitch, Eugene; Oxide Ceramics, 1960, 356-369.
Beck David E.
Gooch Jack G.
Holcombe, Jr. Cressie E.
Masters David R.
Besha Richard G.
Hamel Stephen D.
Hunt Brooks H.
Larcher Earl L.
Okamoto Joel P.
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