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Causes and Effects of Fe‐Bearing Inclusions in Sintered Si 3 N 4
Author(s) -
PASTO ARVID E.
Publication year - 1984
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.1151-2916.1984.tb19612.x
Subject(s) - materials science , decomposition , alloy , metallurgy , bearing (navigation) , non metallic inclusions , metal , silicon , chemistry , cartography , organic chemistry , geography
Iron is shown to increase the tendency for Si 3 N 4 to decompose by formation of stable Fe‐Si alloys. The decomposition reaction is temperature‐ and pressure‐sensitive, with increasing temperatures causing greater reaction. The liquid Fe‐Si alloy produced at elevated temperatures solidifies on cooling and results in metallic inclusions that act as flaws and thus mechanical failure origins.