Abstract
Laboratory procedure for the preparation of a capillary ceramic filter from a high silica-containing glaze was described and its microstructure was investigated by scanning electron microscopy (SEM). Glaze powders with two different particle sizes were used for filter preparation. Attrition milling was used to prepare fine particles in aqueous medium. Thin filtering layers were shaped from the fine particles by uniaxial pressing and later sintered at a temperature of 800 °C for enough strength. The coarse glaze powders were inserted between these layers and further sintered at a temperature of 950 °C. The filtering layers showed that the uniform porosities, which were interconnected to each other, could be obtained. During this process, it was observed that grains were coated by glass. This type of microstructure is believed to have great potential for the use of this material as a capillary ceramic filter.
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