Structural and Thermomechanical Properties of Stove Tile Ceramics

  • Anton TRNÍK Constantine the Philosopher University
  • Igor ŠTUBŇA Constantine the Philosopher University
  • Gabriel VARGA Constantine the Philosopher University
  • Martin KEPPERT Czech Technical University
  • Peter BAČÍK Comenius University
Keywords: heatproof ceramics, Young’s modulus, thermomechanical analysis (mf-TMA), thermodilatometry (TD)


The thermomechanical and thermodilatometric behavior of fired heatproof stove tile ceramic material Letovice, which contains quartz, mullite and small amounts of feldspar and glassy phase, was studied while increasing temperature up to 1100°C. Young’s modulus was measured using the non-destructive sonic resonant method mf-TMA. To find actual dimensions of the sample, thermodilatometry was carried out at the same temperature regime as mf-TMA. A significant increase in Young’s modulus was observed in the region of the α®b transformation of quartz. This can be explained by the healing effect of the induced radial stresses around the quartz grains on microcracks. The presence of glassy phase caused a small decrease of Young’s modulus at temperatures above ~950°C.


Author Biographies

Anton TRNÍK, Constantine the Philosopher University
Department of Physics
Igor ŠTUBŇA, Constantine the Philosopher University
Department of Physics
Gabriel VARGA, Constantine the Philosopher University
Department of Physics
Martin KEPPERT, Czech Technical University
Department of Materials Engineering and Chemistry
Peter BAČÍK, Comenius University
Department of Mineralogy and Petrology