Rheology of zirconia-alumina gelcasting slurries

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:5027934

Bleier, A; Omatete, O O; Westmoreland, C G

The rheology of zirconia-alumina composite slurries for gelcasting was studied in order to maximize the solids loading. The viscosity and yield stress were controlled by adjusting the pH. This approach allows the solids loading to be maximized for the gelcasting of near-net-shape composites. A strong correspondence exists among the rheological behavior, the surface charge on the particles, colloidal stability, and the maximum solids loading. The best pH conditions for gelcasting composites depends on the specific binary composition.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5027934
• Report Number(s): CONF-920402-39; ON: DE92016787
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CASTING
CHALCOGENIDES
COLLOIDS
DISPERSIONS
FABRICATION
GELS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
RHEOLOGY
SLURRIES
SUSPENSIONS
TRANSITION ELEMENT COMPOUNDS
VISCOSITY
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES