Microstructural characterization of mullite and anorthitebased Porcelain tile using regional clay
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The study focused on using of regional clay (Nevsehir/Turkey) instead of different clay and kaolin to prepare porcelain tilesalong with dolomite and albite. Considering the variation of regional clay with other clay and kaolin the physical properties,phase-microstructure analysis and the determination of sintering temperatures by means of optical dilatometer of sampleswere studied. Uni-axially pressed samples were exposed to firing regime at 1205 oC for 42 min and tested to comply with ISO10545 tile standards. The crystal phases were detected as quartz, anorthite and mullite. The mechanical strength was foundto increase as the mullite content. When the Nevsehir’s clay content in the starting composition added, glassy matrix becamericher in kaolinite glass and earth-alkaline oxide favorably affected the sintering temperatures. Almost all technologicalproperties and sintering behavior of new compositions demonstrated the suitability of Nevsehir clay as a potential raw materialfor ceramic tile industry. This regional clay is affect to microstructure and crystalline phases of tile bodies.
Abstract
The study focused on using of regional clay (Nevsehir/Turkey) instead of different clay and kaolin to prepare porcelain tilesalong with dolomite and albite. Considering the variation of regional clay with other clay and kaolin the physical properties,phase-microstructure analysis and the determination of sintering temperatures by means of optical dilatometer of sampleswere studied. Uni-axially pressed samples were exposed to firing regime at 1205 oC for 42 min and tested to comply with ISO10545 tile standards. The crystal phases were detected as quartz, anorthite and mullite. The mechanical strength was foundto increase as the mullite content. When the Nevsehir’s clay content in the starting composition added, glassy matrix becamericher in kaolinite glass and earth-alkaline oxide favorably affected the sintering temperatures. Almost all technologicalproperties and sintering behavior of new compositions demonstrated the suitability of Nevsehir clay as a potential raw materialfor ceramic tile industry. This regional clay is affect to microstructure and crystalline phases of tile bodies.
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