Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Thermal Properties of 0.9CaMgSi2O6-0.1MgSiO3 Glass-Ceramics

  • Jeon, Chang-Jun (Department of Materials Engineering, Kyonggi University) ;
  • Sun, Gui-Nam (Department of Materials Engineering, Kyonggi University) ;
  • Lee, Jong-Kyu (Department of Materials Engineering, Kyonggi University) ;
  • Ju, Han-Sae (Department of Materials Engineering, Kyonggi University) ;
  • Kim, Eung-Soo (Department of Materials Engineering, Kyonggi University)
  • Received : 2011.10.25
  • Accepted : 2012.01.19
  • Published : 2012.01.31
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Abstract

Dependencies of thermal properties on the crystallization behavior of $0.9CaMgSi_2O_6-0.1MgSiO_3$ glass-ceramics were investigated as a function of heat-treatment temperature from $750^{\circ}C$ to $950^{\circ}C$. The crystallization behavior of the specimens depended on the heat-treatment temperature, which could be evaluated by differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) analysis by the Rietveld-reference intensity ratio (RIR) combined procedure. With an increase of the heat-treatment temperature, the thermal conductivity and thermal diffusivity of the heat-treated specimens increased. These results could be attributed to the increase of crystallization with heat-treatment temperature. However, the specific heat capacity of the heat-treated specimens was not affected by the heat-treatment temperature. The thermal conductivities measured from $25^{\circ}C$ to $100^{\circ}C$ were also discussed for application to lighting-emitting diode (LED) packages and substrate materials.

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References

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