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Detailed Program
Paper Number : ST-P02
Time Frame : 12:00~13:30
Presentation Date : Friday, 28, November
Session Name : Structural Ceramics
Session Chair 1# : -
Session Chair 2# : -
Theoretical and Experimental Analyses of Thermal Conductivity of the Alumina-Mullite System
Mr. Shota Ito
Kagoshima university
The thermal conductivity of the three phase system of alumina-mullite-pore was calculated by a theoretical equation developed [1,2] in this research group, and compared with the experimental results. The pores in the sintered composite were treated as one phase. A theoretical thermal conductivity of alumina-mullite-pore system was calculated for two cases : mullite continuous phase and alumina continuous phase. Figure 1 shows the measured and calculated thermal conductivities for the alumina-mullite-pore system. The measured conductivity of the composite with 0.5-25 % porosity was in accordance with the calculated value for the mullite continuous phase. No grain size effect of mullite particles on the thermal conductivity was measured in the range of 1-50 ¥ìm. This result is also explained by the developed model.
Acknowledgements :