High-temperature electrically conductive ceramic composite and method for making same

Patent · Tue Sep 27 04:00:00 EDT 1983

OSTI ID:7248391

Beck, D E; Gooch, J G; Holcombe, Jr, C E; Masters, D R

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.

• Assignee: PTO; EDB-94-124269
• Patent Number(s): A; US 4406699
• Application Number: PPN: US 6-271889
• OSTI ID: 7248391
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ACTINIDE ALLOYS
ACTINIDES
ALLOYS
CHALCOGENIDES
CHEMICAL COMPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FABRICATION
METALLURGY
METALS
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SINTERING
TRANSITION ELEMENT COMPOUNDS
URANIUM
URANIUM ALLOYS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES