The impact of nano-quartz on the structure of glass-ceramic glazes from the SiO2–Al2O3–CaO–MgO–Na2O–K2O system |
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Affiliation: | 1. Instituto de Tecnología Cerámica – Asociación de Investigación de las Industrias Cerámicas;2. Department of Chemical Engineering. Universitat Jaume I, Campus Universitario Riu Sec, 12006 Castellon, Spain;3. Federal University of Sao Carlos, Graduate Program in Materials Science and Engineering, Av. Trab. São Carlense, 400 - Parque Arnold Schimidt, São Carlos - SP, 13566-590, Brazil |
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Abstract: | The present study reports the impact of the introduction of nano-grained quartz (SA = 325 m2/g) into the composition on the structure and properties of the ceramic glaze of the CMAS-Na2O–K2O system. The results were compared to the glaze which had an identical oxide composition, with a difference that quartz was introduced in the form of quartz powder with a much smaller specific surface area SA = 1.41 m2/g. Both glazes are characterized by a large part of the glassy phase, above 90% by volume. The results obtained show a higher arrangement of the continuous glassy phase structure in the glaze with the addition of nano-quartz. This glaze also shows significantly higher values for all measured mechanical properties. It seems that if, in the near future, new cheaper methods for the production of nano-quartz are developed, it will be a new interesting direction of research aimed at improving the parameters of glazes and glass-ceramic materials of CMAS type. |
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Keywords: | Glaze Glass-ceramic Glassy-phase Nano-quartz Structure MIR Raman FIR Mechanical properties |
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