ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 50, (3) 163 - 166 (2006)

RHEOMETRY OF CONCENTRATED CERAMIC SUSPENSIONS - STEPS FROM MEASURED TO RELEVANT DATA: PART 1. Rotational viscometer with coaxial cylinders - power-law model
Andertová Jana 1, Rieger František 2
1 Department of Glass and Ceramics, Institute of Chemical Technology Prague, Technická 5, 166 28 Prague, Czech Republic
2 Department of Process Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Technická 4, 166 07 Prague, Prague, Czech Republic

Keywords: Rheology, Ceramics, Suspension, Rotational viscometry, Power-law model

The knowledge of flow behaviour of ceramic suspensions is important condition for control of ceramic wet processing. The flow behaviour can be stated by the rheological measurements. The paper deals with measurement of the concentrated ceramic suspensions rheological behaviour. The procedure of rotational rheometry experimental data evaluation from rotational viscometer with coaxial cylinders is presented. The correction of data obtained by direct measurement with non-Newtonian suspension is proposed with the aim to obtain the relevant flow curve, i.e. dependence of shear stress on shear rate.

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