Effect of ageing time on pressure slip casting of silicon carbide bodies

Binary silicon carbide powder mixtures, With the particle size distribution designed to optimize the particle packing density, were dispersed in aqueous medium in the absence and in the presence of different amounts of a deflocculant. The influence of ageing time on the rheological behaviour of finer powder slurries and on relative green density and rare of wall build-up was studied for pressure slip casting bodies prepared from binary suspensions. Good correlations between theological characteristics of the suspensions and the structure and properties of the formed bodies were observed. (C) 1996 Elsevier Science Limited.