Control of the inner stresses in ceramic green bodies formed by gelcasting

The negative effect of inner stresses on the ceramic green body formed by gelcasting is discussed. It is found that a proper amount of hydroxyethyl acrylate (HEA) added into the concentrated suspension can adjust polymer network structure and thus reduce the inner stresses and cracking in the ceramic green body. The debindering time of large ceramic parts can be significantly shortened by reducing the harmful inner stresses in the green body.