Morphology of platelike abnormal grains in liquid-phase-sintered alumina

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb05272.x· OSTI ID:6072336

Song, H; Coble, R L ^[1]

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1. Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Materials Science and Engineering

This paper reports the microstructural features of platelike grains in liquid-phase-sintered Al{sub 2}O{sub 3} investigated. The flat boundaries of platelike grains wetted with a liquid phase were basal planes. After impingement of platelike grains, flat boundaries progressively changed to curved boundaries which consisted of both basal and rhombohedral planes as microscopic facets. Second-phase particles were observed for most doped samples. Small-angle subgrain boundaries inside platelike grains were also observed.

• OSTI ID: 6072336
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 73:7; ISSN JACTA; ISSN 0002-7820
• 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 OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
EPITAXY
FABRICATION
GRAIN BOUNDARIES
LIQUID PHASE EPITAXY
MICROSTRUCTURE
MORPHOLOGY
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SINTERING
SMALL ANGLE SCATTERING