Solid-liquid reactions in the system Si[sub 3]N[sub 4]-[beta]-SiAlON-Y[sub 3]Al[sub 5]O[sub 12]

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

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb04657.x· OSTI ID:6765944

Wisnudel, M; Tien, T Y ^[1]

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1. Univ. of Michigan, Ann Arbor, MI (United States). Materials Science and Engineering

Solid-liquid equilibria in the system Si, Al, Y/N, O were determined for the compatibility triangle bounded by the [beta]-SiAlON solid-solution line and the compound Y[sub 3]Al[sub 5]O[sub 12]. X-ray diffraction was used to determine the crystalline phases present in the equilibrated, rapidly cooled specimens. The liquid phase was quantified with volume fraction measurements performed on scanning electron micrographs. The solid-liquid tie lines at 1,650 and 1,750 C were established from lattice parameters of the [beta]-SiAlON phase and from the amount of liquid phase in equilibrium with the crystalline solid. The liquid phase was crystallized to verify the location of the starting composition.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6765944
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:10; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CRYSTALLIZATION
DATA
DIAGRAMS
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
INFORMATION
MATERIALS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE STUDIES
PHASE TRANSFORMATIONS
PNICTIDES
SILICON COMPOUNDS
SILICON NITRIDES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES