PRODUCTION OF CERAMICS FILMS USING GEL SUSPENSIONS

摘要

In this paper,the preparation procedure of ceramic foils from the Al2O3 and ZrO2 powders by the gelcasting method is shown. This method consists of the use of a special set of gelling agents,based on water soluble monomers i.e. acryloamide (AAm),metacryloam-ide (MAm),and 2-hydroxyethylometacrylane (HEMA). Special processing of the monomers allows ceramic foils to obtain a thickness of -0,2 mm and good flexibility after polymerization. Moreover,the foils show the exceptionally high mechanical strength,both in the dried and fired state,and very smooth surfaces.Special attention has been paid to the preparation of suspensions,selection of monomer compositions,and Theological behaviour. Selection of the suitable composition of the suspension assures its good fluidity and obtainment of the thin homogenous layers with the uniform structure. A drying process was elaborated,preventing the foil deformation.