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Characterization of Ceramic Batch Via Capillary Rheometry

Published online by Cambridge University Press:  15 February 2011

Victor F. Janas ,
Christopher J. Malarkey ,
David R. Treacy  and
Michael E. Zak
Victor F. Janas
Affiliation:
Corning Incorporated, Applied Process Research, EJ-114, Corning, NY 14831
Christopher J. Malarkey
Affiliation:
Corning Incorporated, Applied Process Research, EJ-114, Corning, NY 14831
David R. Treacy
Affiliation:
Corning Incorporated, Applied Process Research, EJ-114, Corning, NY 14831
Michael E. Zak
Affiliation:
Corning Incorporated, Applied Process Research, EJ-114, Corning, NY 14831
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Abstract

Rheological testing has been developed to predict the extrudability of ceramic pastes. Inorganic batches containing cellulosic binders were mixed in a twin screw extruder prior to characterization in a capillary rheometer. Various die lengths were used to separate viscosity from wall slip parameters. A power law model was fit to the paste viscosity. The wall shear stress, assuming 100% slip, was a linear function of the wall velocity. The resulting rheological models were used in fluid flow finite element analysis for determination of extrusion pressure, and the evaluation of binders.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 289: Symposium M – Flow and Microstructure of Dense Suspensions , 1992 , 123
Copyright
Copyright © Materials Research Society 1993

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