Pre-eutectic densification in MgF/sub 2/-CaF/sub 2/

Conference · Thu Apr 01 00:00:00 EST 1982

OSTI ID:5133972

Hu, S C; De Jonghe, L C

Increased densification rates were found as much as 200/sup 0/C below the eutectic temperature (980/sup 0/C) for MgF/sub 2/ containing small amounts of CaF/sub 2/. Constant heating rate and constant temperature sintering data, as well as microstructural developments indicated that solid state grain-boundary transport rates had been enhanced by the eutectic forming additive. The effect saturated at about 1 wt % CaF/sub 2/. The results suggest that densification of ceramic powders could be favorably affected without a substantial increase in the grain growth rate, by the addition of small amounts of eutectic forming additives, and sintering below the eutectic temperature. 6 figures.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5133972
• Report Number(s): LBL-12849-Rev.; CONF-820638-2-Rev.; ON: DE82015750
• Resource Relation: Conference: 5. international meeting of modern ceramics technologies, Lignano-Sabbiadoro, Italy, 14 Jun 1982
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MAGNESIUM FLUORIDES
SINTERING
CALCIUM FLUORIDES
EUTECTICS
EXPERIMENTAL DATA
GRAIN GROWTH
GRAIN SIZE
MICROSTRUCTURE
POWDERS
SHRINKAGE
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CRYSTAL STRUCTURE
DATA
FABRICATION
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
MAGNESIUM COMPOUNDS
NUMERICAL DATA
SIZE
360601* - Other Materials- Preparation & Manufacture