碳毡/碳复合材料超高温力学性能实验研究

利用改进的快速通电加热测试技术，模拟碳毡／碳复合材料的超高温工作环境，对其高温下的拉伸、压缩力学性能进行了全面的测试，并计算了材料在不同温度下的抗热应力系数．结果表明，材料的模量和强度在一定范围内随温度的升高而增加．材料的拉伸性能ＸＹ向优于Ｚ向，而压缩性能Ｚ向优于ＸＹ向．材料的抗热震性能随温度升高变化平稳，ＸＹ向的抗热震性能优于Ｚ向．

Mechanical Behavior of Carbon Felt-Carbon Composites under Ultra-High Temperature

By applying improved fast electric heating techniques, the ultra-high temperature condition of carbon felt-carbon composites (CFCCs) in practice was simulated. Then its'tensile and compressive mechanical properties were measured by Gleebe-1500. The thermal stress resistance (TSR) was afterwards derived from modulus and strength. The results show that both strength and modulus increase with increasing temperature in a certain range. Further more, tensile properties in XY-direction are better than that in Z-direction, while compressive properties in Z-direction is better. The TSRs have a little change with temperature, and which in XY-direction are larger than that in Z-direction.