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Extrusion and rheological properties of a-aluminum oxide pastes

Graczyk J., Buggisch H., Essawy H.

International Journal of Applied Mechanics and Engineering

2003

Vol. 8, no spec.

333-338

The extrusion properties of a-aluminum oxide pastes were investigated via capillary rheometry. Several parameters affecting the paste behavior were considered, including the nature of the fluid phase (water, hydroxyethylcellulose, silicone oil), the solids concentration , the extrusion rate and the preparation method (direct coagulation casting versus homogenization using a Z-kneader and mixing die). The paste stability, flow curves and wall slip behavior were determined under the extrusion conditions.

Capillary rheometry for studying slip flow in paste extrusion

Graczyk J., Buggisch H.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

45-50

Capillary rheometric methods (Mooney, twin capillary, rough die, and color marking methods) are presented and application of these techniques to determine wall slip behavior of pastes is discussed, using measurements of aluminum oxide-silicone oil pastes as an example.