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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.