无机材料学报

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碳毡/碳复合材料超高温力学性能实验研究

易法军; 孟松鹤; 韩杰才; 杜善义   

  1. 哈尔滨工业大学复合材料研究所 哈尔滨 150001
  • 收稿日期:2000-10-30 修回日期:2000-12-29 出版日期:2001-11-20 网络出版日期:2001-11-20

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

YI Fa-Jun; MENG Song-He; HAN Jie-Cai; DU Shan-Yi   

  1. Center for Composite Materials; Harbin Institute of Technology; Harbin 150001; China
  • Received:2000-10-30 Revised:2000-12-29 Published:2001-11-20 Online:2001-11-20

摘要: 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向.

关键词: 碳毡/碳复合材料, 超高温, 力学性能, 抗热应力系数

Abstract:

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.

Key words: carbon felt-carbon composites, ultra-high temperature, mechanical properties, thermal stress resistance

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