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

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.

Inventors:
; ; ;
Publication Date:
OSTI Identifier:
5227810
Application Number:
ON: DE82011756
Assignee:
Dept. of Energy
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NIOBIUM OXIDES; POWDER METALLURGY; SINTERING; ZIRCONIUM OXIDES; ELECTRIC CONDUCTIVITY; PRESSING; CHALCOGENIDES; ELECTRICAL PROPERTIES; FABRICATION; MATERIALS WORKING; METALLURGY; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS; ZIRCONIUM COMPOUNDS; 360201* - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

Beck, D. E., Gooch, J. G., Holcombe, Jr., C. E., and Masters, D. R. High-temperature electrically conductive ceramic composite and method for making same. United States: N. p., 1981. Web.
Beck, D. E., Gooch, J. G., Holcombe, Jr., C. E., & Masters, D. R. High-temperature electrically conductive ceramic composite and method for making same. United States.
Beck, D. E., Gooch, J. G., Holcombe, Jr., C. E., and Masters, D. R. Tue . "High-temperature electrically conductive ceramic composite and method for making same". United States. https://www.osti.gov/servlets/purl/5227810.
@article{osti_5227810,
title = {High-temperature electrically conductive ceramic composite and method for making same},
author = {Beck, D. E. and Gooch, J. G. and Holcombe, Jr., C. E. and Masters, D. R.},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5227810}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {6}
}