Stepwise/ultimate density milling

摘要

Disclosed is a method of forming a slurry for casting into ceramic green sheets. Starting from selected quantities of a solvent, plasticizer, polymeric binder material, frit and aluminum oxide, a low viscosity pre-mix is formed by combining predetermined portions of the solvent and binder material and all of the plasticizer. The remaining portions of the solvent and binder material are combined into a post-mix. Next, the pre-mix and frit are milled in a ball mill. Then the aluminum oxide is added to the ball mill in steps using predetermined portions and milled for predetermined periods of time to achieve the desired degree of aluminum oxide deagglomeration and particle packing density. Finally, the post-mix is added to the ball mill and milled to obtain the final slurry.