Pressureless sintering of whisker-toughened ceramic composites

Patent · Tue May 04 00:00:00 EDT 1993

OSTI ID:6219946

Tiegs, T N

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): US 5207958; A
• Application Number: PPN: US 7-789390
• OSTI ID: 6219946
• Resource Relation: Patent File Date: 6 Nov 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
SINTERING
CERAMICS
DENSITY
FRACTURE PROPERTIES
SILICON CARBIDES
WHISKERS
CARBIDES
CARBON COMPOUNDS
CRYSTALS
FABRICATION
MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
360601* - Other Materials- Preparation & Manufacture