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Title: Silicon nitride ceramic having high fatigue life and high toughness

Abstract

A sintered silicon nitride ceramic comprising between about 0.6 mol % and about 3.2 mol % rare earth as rare earth oxide, and between about 85 w/o and about 95 w/o beta silicon nitride grains, wherein at least about 20% of the beta silicon nitride grains have a thickness of greater than about 1 micron.

Inventors:
 [1]
  1. Oakham, MA
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
870557
Patent Number(s):
5545597
Assignee:
Saint-Gobain/Norton Industrial Ceramics Corp. (Worcester, MA)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
silicon; nitride; ceramic; fatigue; life; toughness; sintered; comprising; mol; rare; earth; oxide; 85; 95; beta; grains; 20; thickness; micron; ceramic comprising; earth oxide; silicon nitride; rare earth; beta silicon; nitride ceramic; sintered silicon; fatigue life; nitride grain; /501/

Citation Formats

Yeckley, Russell L. Silicon nitride ceramic having high fatigue life and high toughness. United States: N. p., 1996. Web.
Yeckley, Russell L. Silicon nitride ceramic having high fatigue life and high toughness. United States.
Yeckley, Russell L. Mon . "Silicon nitride ceramic having high fatigue life and high toughness". United States. https://www.osti.gov/servlets/purl/870557.
@article{osti_870557,
title = {Silicon nitride ceramic having high fatigue life and high toughness},
author = {Yeckley, Russell L},
abstractNote = {A sintered silicon nitride ceramic comprising between about 0.6 mol % and about 3.2 mol % rare earth as rare earth oxide, and between about 85 w/o and about 95 w/o beta silicon nitride grains, wherein at least about 20% of the beta silicon nitride grains have a thickness of greater than about 1 micron.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {1}
}

Patent:

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