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Sintering of Si 3 N 4 ‐Y 2 O 3 Under Nitrogen Pressure
Author(s) -
Galasso F. S.,
Veltri R. D.
Publication year - 1981
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.1151-2916.1981.tb09543.x
Subject(s) - sintering , materials science , overpressure , nitrogen , analytical chemistry (journal) , high pressure , metallurgy , mineralogy , chemistry , chromatography , thermodynamics , physics , organic chemistry
This study shows that the amount ofAl 2 O 3 needed to form high density Si 3 N 4 ‐15Y 2 ‐O 3 samples can be reduced by using high surface area Si 3 N 4 powder and high N 2 overpressure (high sintering temperatures) during the sintering process. The reduction in AI 2 O 3 content results in improved oxidation resistance of the sintered samples.