Pressureless sintering of whisker-toughened ceramic composites
Patent
·
OSTI ID:6219946
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.
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
- Patent Number(s):
- A; US 5207958
- Application Number:
- PPN: US 7-789390
- OSTI ID:
- 6219946
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
CARBIDES
CARBON COMPOUNDS
CERAMICS
COMPOSITE MATERIALS
CRYSTALS
DENSITY
FABRICATION
FRACTURE PROPERTIES
MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
PHYSICAL PROPERTIES
SILICON CARBIDES
SILICON COMPOUNDS
SINTERING
WHISKERS
360601* -- Other Materials-- Preparation & Manufacture
CARBIDES
CARBON COMPOUNDS
CERAMICS
COMPOSITE MATERIALS
CRYSTALS
DENSITY
FABRICATION
FRACTURE PROPERTIES
MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
PHYSICAL PROPERTIES
SILICON CARBIDES
SILICON COMPOUNDS
SINTERING
WHISKERS