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中文摘要：
基于超高温陶瓷材料相关材料参数对温度的敏感性,以现有的抗热震断裂评价理论为基础,通过考虑温度对超高温陶瓷材料物理性能的影响,探讨了热震温度范围内热应力衰减系数、表面热传递系数、热冲击初始环境温度等热环境参数对抗热冲击阻力参数、断裂临界温差和断裂临界温度的影响.
英文摘要：
In the present study, the temperature-dependent thermal shock resistances of Ultra-High Temperature Ceramics （UHTCs） are examined based on the current evaluation theories of thermal shock resistance parameters, since the material parameters of the UHTCs are very sensitive to the changes of temperature. The influence of some important thermal environment parameters , such as the surface heat transfer coefficient, heat transfer condition, thermal stress decay modulus and initial temperature of the thermal shock , on the thermal shock resistance parameters, critical temperature of rupture and critical temperature difference of rupture of the UHTCs are studied considering the effects of temperature on the physical and mechanical properties of the UHTCs within the range of thermal shock temperature. The results show that thermal shock behaviour of the UHTCs is strongly affected by the thermal environment.
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