Preparation of High Concentrated suspension and Gelcasting process for silicon Nitride Bonded silicon Carbide Refractories

摘要

Gelcasting is a very useful technique for producing ceramic green parts with near-net-shape. Although it has been successful applied in fine ceramic systems where micrometer and sub-micro- Meter size particles are used as starting powders, there was little report on gelcasting of refractories Manufactured by coarse particles. In this paper, the dispersion of siC/Si powder, sedimentation and Rheological behavior of concentrated suspensions of SiC/Si mixtures with coarse particles )(-350 um) And their gelcasting processes were discussed.