Influence of grain boundary silica impurity on alumina toughness
Conference
·
OSTI ID:6587329
In a series of previous reports the effect of silica impurity on aggregation state and on electropheretic, pressing, filtering and sintering behavior on alumina powders was presented. The results obtained showed that the silica surface impurity plays an important role in the ceramic processing of powders by (a) decreasing the pH values of the isoelectric point (i.e.p.), which affects the aggregation state of the powder, and (b) decreasing the compactability and the activation energy for the initial stage of sintering. In the phase of the studies emphasis was given to the effect of the presence of silica impurity on the toughness and fracture behavior of alumina samples.
- Research Organization:
- Instituto de Ceramica y Vidrio, Madrid (Spain); Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6587329
- Report Number(s):
- LBL-12190; CONF-800765-5
- Resource Relation:
- Conference: 7. LLR/MMRD international symposium of interfaces in glass-metal systems, Berkeley, CA, USA, 28 Jul 1980
- Country of Publication:
- United States
- Language:
- English
Similar Records
Influence of surface silica impurities on the sintering behavior of alumina powders
Microstructural design of silicon nitride with improved fracture toughness. 2: Effects of yttria and alumina additives
Grain growth and fracture toughness of fine-grained silicon carbide ceramics
Conference
·
Fri Feb 01 00:00:00 EST 1980
·
OSTI ID:6587329
Microstructural design of silicon nitride with improved fracture toughness. 2: Effects of yttria and alumina additives
Journal Article
·
Sun Nov 01 00:00:00 EST 1998
· Journal of the American Ceramic Society
·
OSTI ID:6587329
+5 more
Grain growth and fracture toughness of fine-grained silicon carbide ceramics
Journal Article
·
Wed Nov 01 00:00:00 EST 1995
· Journal of the American Ceramic Society
·
OSTI ID:6587329
Related Subjects
36 MATERIALS SCIENCE
ALUMINIUM OXIDES
FRACTURE PROPERTIES
IMPURITIES
FABRICATION
GRAIN BOUNDARIES
SILICA
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CRYSTAL STRUCTURE
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
ALUMINIUM OXIDES
FRACTURE PROPERTIES
IMPURITIES
FABRICATION
GRAIN BOUNDARIES
SILICA
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CRYSTAL STRUCTURE
MECHANICAL PROPERTIES
MICROSTRUCTURE
MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties