Direct Coagulation Casting

Direct Coagulation Casting (DCC) is a near net shape forming technique for complex shapedceramic green bodies with high quality and homogeneity. Double layer stabilized concentratedceramic suspensions airs solidified by shifting the suspensions pH towards the isoelectric pointusing the in situ enzyme-catalyzed reaction, which minimizes the repulsive forces between thesuspended paxticles. The remaining, attractive Van der Waals forces form a stiff, wet green body.One of the most important process in DCC is preparing the ceramic suspension with high solidsloading (＞55vol% ) and low viscosity, the other key technique is controlling the enzyme-catalyzedreaction.