Zirconia ceramic grouting

The molding process of grouting includes physical dehydration process and chemical coagulation process. Physical dehydration removes the water in the slurry through the capillary action of the porous gypsum mold. The chemical coagulation process is because Ca2+ generated by the dissolution of CaSO4 on the surface of the gypsum mold improves the slurry. The ionic strength in the material causes the flocculation of the slurry. Under the action of physical dehydration and chemical coagulation, the ceramic powder particles are deposited on the gypsum mold wall. Grouting is suitable for the preparation of large-scale ceramic parts with complex shapes, but the quality of the green body, including shape, density, strength, etc., is poor, the labor intensity of workers is high, and it is not suitable for automated operations