Effects of the characteristics of silicon nitride powders on the preparation of α′-sialon ceramics

G.Z. Cao, R. Metselaar, G. Ziegler

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Abstract

The effect of characteristics of Si3N4 powders, including oxygen impurities 1.57, 1.10, and 0.34 wt.% and a-phase content a/(a + b) of 95, 71, and 73, resp., on the prepn. of a'-Sialon ceramics was investigated. Mixts. based on Si3N4 powders with a small amt. of O impurity and low a-phase content exhibited very poor sinterability. A certain amt. of O impurity and high a-phase content are considered necessary to obtain fully dense a'-Sialon ceramics. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)1685-1686
JournalJournal of Materials Science Letters
Volume11
Issue number24
DOIs
Publication statusPublished - 1992

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