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Kinetics of capillary extraction of organic vehicle from ceramic bodies. Part I: Flow in porous media

Bao, Y; Evans, JRG; (1991) Kinetics of capillary extraction of organic vehicle from ceramic bodies. Part I: Flow in porous media. Journal of the European Ceramic Society , 8 (2) pp. 81-93. 10.1016/0955-2219(91)90114-F.

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Abstract

Gas and water flow permeabilities of four powder beds with diverse characteristics were measured and compared with values predicted by a range of model equations. No single equation was found to fit all powders. This means that a general theory of capillary extraction of ceramic binders cannot rest on currently available permeability models. The kinetics of wax sorption from an unlimited supply was measured gravimetrically and was found to have parabolic dependence on time, as predicted by Darcy's Law. The sorption constant was deduced and, together with experimental values of permeability, used to calculate the average capillary pressures for the powder beds. These in turn were compared with theory. In Part II the results will be used to attempt to quantify the extraction of wax from ceramic bodies. © 1991.

Type: Article
Title: Kinetics of capillary extraction of organic vehicle from ceramic bodies. Part I: Flow in porous media
DOI: 10.1016/0955-2219(91)90114-F
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/730840
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