Pressureless sintering of whisker-toughened ceramic composites
Abstract
A pressureless sintering method is disclosed for use in the production of whisker-toughened ceramic composites wherein the sintered density of composites containing up to about 20 vol. % SiC whiskers is improved by reducing the average aspect ratio of the whiskers to from about 10 to about 20. Sintering aids further improve the density, permitting the production of composites containing 20 vol. % SiC with sintered densities of 94% or better of theoretical density by a pressureless sintering method.
- Inventors:
-
- Lenoir City, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 868766
- Patent Number(s):
- 5207958
- Assignee:
- Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- pressureless; sintering; whisker-toughened; ceramic; composites; method; disclosed; production; sintered; density; containing; 20; vol; sic; whiskers; improved; reducing; average; aspect; ratio; 10; aids; improve; permitting; densities; 94; theoretical; theoretical density; ceramic composites; ceramic composite; aspect ratio; pressureless sintering; composites containing; sic whiskers; whisker-toughened ceramic; sintering aids; sintering method; sintered density; toughened ceramic; /264/501/
Citation Formats
Tiegs, Terry N. Pressureless sintering of whisker-toughened ceramic composites. United States: N. p., 1993.
Web.
Tiegs, Terry N. Pressureless sintering of whisker-toughened ceramic composites. United States.
Tiegs, Terry N. Fri .
"Pressureless sintering of whisker-toughened ceramic composites". United States. https://www.osti.gov/servlets/purl/868766.
@article{osti_868766,
title = {Pressureless sintering of whisker-toughened ceramic composites},
author = {Tiegs, Terry N},
abstractNote = {A pressureless sintering method is disclosed for use in the production of whisker-toughened ceramic composites wherein the sintered density of composites containing up to about 20 vol. % SiC whiskers is improved by reducing the average aspect ratio of the whiskers to from about 10 to about 20. Sintering aids further improve the density, permitting the production of composites containing 20 vol. % SiC with sintered densities of 94% or better of theoretical density by a pressureless sintering method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}
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Works referenced in this record:
Processing of pressureless-sintered SiC whisker-reinforced Al2O3 composites
journal, December 1987
- Barclay, S. J.; Fox, J. R.; Bowen, H. K.
- Journal of Materials Science, Vol. 22, Issue 12
Suspension Processing of Al2O3/SiC Whisker Composites
journal, May 1988
- Sacks, Michael D.; Lee, Hae-Weon; Rojas, Oswaldo E.
- Journal of the American Ceramic Society, Vol. 71, Issue 5