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Title: 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:
 [1]
  1. Oak Ridge, TN
Publication Date:
Research Org.:
UNION CARBIDE CORP
OSTI Identifier:
862589
Patent Number(s):
US 3969123
Assignee:
United States of America as represented by United States Energy (Washington, DC)
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}
}

Patent:

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