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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4657877 B1

PDFFull Text
Date of Patent:
Apr. 14, 1987

Filed:

May. 21, 1986

Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics

Applicant:
Inventors:

Paul F Becher, Oak Ridge, TN (US);

Terry N Tiegs, Lenoir City, TN (US);

Assignee:

The United States of America as represented by the United States, , US;

Attorneys:

Larcher; Earl L.

Hamel; Stephen D.

Hightower; Judson R.

Primary Examiner:

Ferris H Lander

Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 89 ; 501 95 ; 501105 ; 264 65 ;
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.

Find Patent Forward Citations

Becher, Paul. (1987). Silicon carbide whisker-zirconia reinforced mullite and alumina ceramics (U.S. Patent No. 4657877). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4657877

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