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Hardness of dense beta-Si3N4The effects of small changes in the concentration of an oxygen content densification aid on the room temperature microhardness of hot isostatically pressed and sintered beta-Si3N4 ceramics are studied. The compositions studied were Si3N4 containing 7 wt. pct BeSiN2, a fixed nonoxide densification aid, and 1.9-3.7 wt. pct oxygen as a second, variable densification aid. A proportional relationship between high density and high oxygen content, regardless of heat treatment type, is noted.
Document ID
19840031215
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Greskovich, C.
(General Electric Co. Schenectady, NY, United States)
Yeh, H. C.
(Cleveland State University Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1983
Publication Information
Publication: Journal of Materials Science Letters
Volume: 2
ISSN: 0261-8028
Subject Category
Nonmetallic Materials
Accession Number
84A14002
Distribution Limits
Public
Copyright
Other

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