The effect of albite additions on the sintering, phase compositions and microstructure of vitreous ceramic tiles
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Vitreous ceramic tiles were produced from clay, quartz and albite mixtures fired at 1150 oC. These ceramic tiles were classifiedaccording to the ISO standard. The effect of fluxes additions on the technological properties of ceramic tiles has been studied. The sintering behavior (linear shrinkage, water absorption, apparent porosity and bulk density) of the prepared ceramicbodies was followed. Phase compositions and microstructure were characterized by X-ray diffraction (XRD) and scanningelectron microscope (SEM) attached with an EDAX unit. The densification parameters and hence mechanical properties ofthe samples were enhanced with increasing of albite content up to 40 wt. % due to liquid phase sintering mechanism. However,higher amount of fluxes above the vitrification range (> 40 wt.%) results in a noticeable decrease in the sintering andmechanical properties.
Abstract
Vitreous ceramic tiles were produced from clay, quartz and albite mixtures fired at 1150 oC. These ceramic tiles were classifiedaccording to the ISO standard. The effect of fluxes additions on the technological properties of ceramic tiles has been studied. The sintering behavior (linear shrinkage, water absorption, apparent porosity and bulk density) of the prepared ceramicbodies was followed. Phase compositions and microstructure were characterized by X-ray diffraction (XRD) and scanningelectron microscope (SEM) attached with an EDAX unit. The densification parameters and hence mechanical properties ofthe samples were enhanced with increasing of albite content up to 40 wt. % due to liquid phase sintering mechanism. However,higher amount of fluxes above the vitrification range (> 40 wt.%) results in a noticeable decrease in the sintering andmechanical properties.
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