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Effect of Crystallizing the Grain‐Boundary Glass Phase on the High‐Temperature Strength of Hot‐Pressed Si 3 N 4 Containing Y 2 O 3
Author(s) -
TSUGE AKIHIKO,
NISHIDA K.,
KOMATSU M.
Publication year - 1975
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1975.tb11488.x
Subject(s) - materials science , grain boundary , fabrication , phase (matter) , composite material , grain size , crystallography , mineralogy , microstructure , chemistry , medicine , alternative medicine , organic chemistry , pathology
The effects of fabrication variables on the high‐temperature strength of hot‐pressed Si 3 N 4 containing 5 wt% Y 2 O 3 were studied. Materials containing a crystalline grain‐boundary phase, formed as a consequence of a high‐temperature presintering heat treatment and identified as Si 3 N 4 ·Y 2 O 3 , had high‐temperature strengths significantly superior to those observed for materials containing a glass phase.