Influence of oxygen content on formation of yttrium [alpha]-SiAlON ceramics

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb04614.x· OSTI ID:7155182

Haviar, M ^[1]

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1. Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Organic Chemistry

Low-porosity [alpha]- and [beta]-SiAlON composite material was prepared when the powder mixture intended for preparation of yttrium [alpha]-SiAlON, with the formula Y[sub 0.4]Si[sub 12[minus]m+n]Al[sub m+n]O[sub n]N[sub 16[minus] n], was attritor milled in isopropyl alcohol or contained excess oxygen (n > 0.6). The region of stability of single-phase yttrium [alpha]-SiAlON was smaller at lower temperatures. Wet milling (in isopropyl alcohol) of AlN powder was found to introduce excess oxygen into the milled powder.

• OSTI ID: 7155182
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:9; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM COMPOUNDS
ALUMINIUM NITRIDES
ALUMINIUM OXIDES
CHALCOGENIDES
DATA
EXPERIMENTAL DATA
INFORMATION
MACHINING
MILLING
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES