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

Beck, David E; Gooch, Jack G; Masters, David R

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

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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:

Beck, David E ^[1]; Gooch, Jack G ^[2]; Holcombe, Jr., Cressie E. ^[3]; Masters, David R ^[1]

Knoxville, TN
Seymour, TN
(Knoxville, TN)

Issue Date:: 1983-01-01

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 864714

Patent Number(s):: 4406699

Assignee:: Beck, David E. (Knoxville, TN);Gooch, Jack G. (Seymour, TN);Holcombe, Jr., Cressie E. (Knoxville, TN);Masters, David R. (Knoxville, TN)

Patent Classifications (CPCs):: C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
C04B35/486 - Fine ceramics

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C22C29/12 - based on oxides

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DOE Contract Number:: W-7405-ENG-26

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: high-temperature; electrically; conductive; ceramic; composite; method; relates; metal-oxide; composition; useful; induction; heating; applications; treating; uranium; alloys; temperature; nonreactive; molten; prepared; particulate; admixture; 20; 50; vol; niobium; zirconium; oxide; stabilized; addition; magnesium; calcium; yttria; blending; powders; pressing; casting; blend; desired; product; configuration; sintering; compact; inert; atmosphere; operation; aluminate; preferably; added; quantity; zirconia; providing; cement; help; maintain; integrity; sintered; uranium alloy; ceramic composition; ceramic composite; calcium oxide; electrically conductive; inert atmosphere; magnesium oxide; zirconium oxide; oxide ceramic; uranium alloys; composition useful; conductive ceramic; desired product; molten uranium; induction heating; casting operation; preferably added; metal-oxide ceramic; high-temperature electrically; help maintain; calcium aluminate; duct configuration; /75/501/

Citation Formats


                    Beck, David E, Gooch, Jack G, Holcombe, Jr., Cressie E., and Masters, David R. High-temperature electrically conductive ceramic composite and method for making same.  United States: N. p., 1983. 
        Web.

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                    Beck, David E, Gooch, Jack G, Holcombe, Jr., Cressie E., & Masters, David R. High-temperature electrically conductive ceramic composite and method for making same.  United States.

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                    Beck, David E, Gooch, Jack G, Holcombe, Jr., Cressie E., and Masters, David R. Sat .  
        "High-temperature electrically conductive ceramic composite and method for making same".  United States.  https://www.osti.gov/servlets/purl/864714.

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@article{osti_864714,

  title        = {High-temperature electrically conductive ceramic composite and method for making same},

  author       = {Beck, David E and Gooch, Jack G and Holcombe, Jr., Cressie E. and Masters, David 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          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1983},

  month        = {1}

}

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