High-temperature electrically conductive ceramic composite and method for making same
- Knoxville, TN
- Seymour, TN
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- Beck, David E. (Knoxville, TN);Gooch, Jack G. (Seymour, TN);Holcombe, Jr., Cressie E. (Knoxville, TN);Masters, David R. (Knoxville, TN)
- Patent Number(s):
- US 4406699
- OSTI ID:
- 864714
- Country of Publication:
- United States
- Language:
- English
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High-temperature electrically conductive ceramic composite and method for making same
High-temperature electrically conductive ceramic and method for making same
Related Subjects
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/