Drying kinetics of water-based ceramic suspensions for tape casting

Briscoe, B.J.
Lo Biundo, G.
Özkan, Necati
An experimental study is described which seeks to characterise the drying kinetics of water-based ceramic (alumina) suspensions in controlled environments. The drying process of the ceramic suspensions is shown, to a first approximation, to follow a two stage mechanism (initial stage: 'external' evaporation controlled process; and second stage: 'internal' diffusion-controlled process). It has been shown that the temperature, the humidity and the surface area of the samples strongly affects the drying kinetics of these suspensions in the initial stage of the drying. The thickness of the samples is more influential in the second stage of the drying. There are no noticeable effects of the initial solid content and the nature of binder content of the suspensions on the drying kinetics. A first order empirical relationship is provided in order to predict the drying time and drying curve for these ceramic suspensions. The drying curves of tape cast suspensions is shown to be predicted accurately by the use of this relationship. (C) 1998 Elsevier Science Limited and Techna S.r.l. All rights reserved.
Citation Formats
B. J. Briscoe, G. Lo Biundo, and N. Özkan, “Drying kinetics of water-based ceramic suspensions for tape casting,” pp. 347–357, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31614.