Sub-eutectic densification and second phase formation in Al/sub 2/O/sub 3/ - CaO

Conference · Fri Jun 01 04:00:00 EDT 1984

OSTI ID:6510407

Wu, S J; De Jonghe, L C

The early and intermediate densification stages of calcia containing alumina were examined at sub-eutectic temperatures. Up to 0.15% wt % calcia causes a decrease in the densification rates; from 0.15 to 0.7 wt % calcia an increasing densification rate is observed; more than 0.75 wt % calcia leads to a montonically decreasing densification rate. The data are interpreted as a competition between grain-boundary defect chemistry, enhanced subeutectic densification, and formation of calcium-aluminate phases of lower calcia activity.

• Research Organization: Lawrence Berkeley Lab., CA (USA); California Univ., Berkeley (USA). Dept. of Materials Science and Mineral Engineering
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6510407
• Report Number(s): LBL-17954; CONF-8405244-1; ON: DE85002065
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
DENSITY
FABRICATION
GRAIN BOUNDARIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
QUANTITY RATIO
SINTERING