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Title: 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:
Publication Date:
OSTI Identifier:
6219946
Patent Number(s):
US 5207958; A
Application Number:
PPN: US 7-789390
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) IMS; EDB-93-126836
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Patent File Date: 6 Nov 1991
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Tiegs, T.N. Pressureless sintering of whisker-toughened ceramic composites. United States: N. p., 1993. Web.
Tiegs, T.N. Pressureless sintering of whisker-toughened ceramic composites. United States.
Tiegs, T.N. Tue . "Pressureless sintering of whisker-toughened ceramic composites". United States.
@article{osti_6219946,
title = {Pressureless sintering of whisker-toughened ceramic composites},
author = {Tiegs, T.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 = {Tue May 04 00:00:00 EDT 1993},
month = {Tue May 04 00:00:00 EDT 1993}
}