Refractory ceramic compositions and method for preparing same
Abstract
This invention relates to ceramic compositions of tungsten and tantalum oxides including 0 to 33 1/3 mole percent of a metal oxide such as hafnia. These ceramics are characterized by melting points greater than about 1400.degree.C and selectively controlled coefficients of thermal expansion of essentially zero to a negative value in the temperature range of 20.degree. to 1000.degree.C.
- Inventors:
-
- (Knoxville, TN)
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- UNION CARBIDE CORP
- OSTI Identifier:
- 862589
- Patent Number(s):
- 3969123
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- refractory; ceramic; compositions; method; preparing; relates; tungsten; tantalum; oxides; including; 33; mole; percent; metal; oxide; hafnia; ceramics; characterized; melting; 1400; degree; selectively; controlled; coefficients; thermal; expansion; essentially; zero; negative; value; temperature; range; 20; 1000; ceramic composition; temperature range; thermal expansion; metal oxide; mole percent; ceramic compositions; refractory ceramic; selectively controlled; selectively control; tantalum oxide; /501/
Citation Formats
Holcombe, Jr., Cressie E., and Morrow, Margaret K. Refractory ceramic compositions and method for preparing same. United States: N. p., 1976.
Web.
Holcombe, Jr., Cressie E., & Morrow, Margaret K. Refractory ceramic compositions and method for preparing same. United States.
Holcombe, Jr., Cressie E., and Morrow, Margaret K. Tue .
"Refractory ceramic compositions and method for preparing same". United States. https://www.osti.gov/servlets/purl/862589.
@article{osti_862589,
title = {Refractory ceramic compositions and method for preparing same},
author = {Holcombe, Jr., Cressie E. and Morrow, Margaret K},
abstractNote = {This invention relates to ceramic compositions of tungsten and tantalum oxides including 0 to 33 1/3 mole percent of a metal oxide such as hafnia. These ceramics are characterized by melting points greater than about 1400.degree.C and selectively controlled coefficients of thermal expansion of essentially zero to a negative value in the temperature range of 20.degree. to 1000.degree.C.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {7}
}
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