Thermal shock of ceramic material : Comparison of resistance parameter with the critical ΔT values ΔTc = ΔTc(Bi) of ceramic materials
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Thermal shock resistance of ceramic material can be characterized by using resistance parameters or critical temperature difference. Correlation between fracture resistance parameter, R and critical temperature difference, ΔTc was presented for four products (99% Al2O3, 86% Al2O3 , mullite and glass). Six equations representing dependence critical temperature difference on Biot number were used. Comparison of critical temperature difference as a function of Biot number with R parameter was also discussed. Statistical analysis was used to determine correlation between R parameter and critical temperature difference. This method showed that linear dependance was acceptibile to use in comparison R parameter with critical ΔTc values.
Keywords:Biot number / Ceramic material / Correlation / Critical temperature difference / Fracture resistannce parameter / Thermal shock
Source:Key Engineering Materials, 1997, 136 PART 3, 1778-1781
- Trans Tech Publications Ltd, Durnten-Zurich