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Title: Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics

Abstract

The flexural strength and/or fracture toughness of SiC whisker-reinforced composites utilizing mullite or alumina as the matrix material for the composite are increased by the addition of zirconia in a monoclinic or tetragonal phase to the matrix. The zirconia addition also provides for a lower hot-pressing temperature and increases the flexural strength and/or fracture toughness of the SiC whisker-reinforced composites over SiC whisker-reinforced composites of the similar matrix materials reinforced with similar concentrations of SiC whiskers.

Inventors:
 [1];  [2]
  1. Oak Ridge, TN
  2. Lenoir City, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
866216
Patent Number(s):
4657877
Assignee:
United States of America as represented by United States (Washington, DC)
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:
silicon; carbide; whisker-zirconia; reinforced; mullite; alumina; ceramics; flexural; strength; fracture; toughness; sic; whisker-reinforced; composites; utilizing; matrix; material; composite; increased; addition; zirconia; monoclinic; tetragonal; phase; provides; hot-pressing; temperature; increases; similar; materials; concentrations; whiskers; matrix material; fracture toughness; silicon carbide; sic whiskers; tetragonal phase; sic whisker-reinforced; flexural strength; alumina ceramic; carbide whisker; matrix materials; similar concentration; reinforced composite; reinforced composites; /501/264/

Citation Formats

Becher, Paul F, and Tiegs, Terry N. Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics. United States: N. p., 1987. Web.
Becher, Paul F, & Tiegs, Terry N. Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics. United States.
Becher, Paul F, and Tiegs, Terry N. Thu . "Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics". United States. https://www.osti.gov/servlets/purl/866216.
@article{osti_866216,
title = {Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics},
author = {Becher, Paul F and Tiegs, Terry N},
abstractNote = {The flexural strength and/or fracture toughness of SiC whisker-reinforced composites utilizing mullite or alumina as the matrix material for the composite are increased by the addition of zirconia in a monoclinic or tetragonal phase to the matrix. The zirconia addition also provides for a lower hot-pressing temperature and increases the flexural strength and/or fracture toughness of the SiC whisker-reinforced composites over SiC whisker-reinforced composites of the similar matrix materials reinforced with similar concentrations of SiC whiskers.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

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