Ceramics-Silikáty 37, (2) 67 - 72 (1993)

A mathematical model, considering liquid transfer as diffusion in a binary mixture, was worked out for the purpose of describing quantitatively the casting of ceramic mixes (slips) into ceramic moulds. Relationships for the calculation of the kinetics of body formation and solidification were obtained by introduction of initial and boundary conditions. In deriving the body formation and solidification model, a number of input conditions and simplifying assumptions had to be introduced. An experimental verification of an aqueous suspension of α-Al₂O₃ showed that the model was capable of predicting the course of body formation and solidification during slip casting into a porous mould with an error of less than 9%. In this way, the use of the simplifying assumptions introduced in deriving the model has been justified.