沈阳航空航天大学学报2026，Vol.43Issue(1)：26-32,7.DOI:10.3969/j.issn.2095-1248.2026.01.004
SiCf/SiC陶瓷基复合材料不同方向的热膨胀性能
Thermal expansion properties of SiCf/SiC ceramic matrix composites in different directions
摘要
Abstract
Simulation and experimental comparison methods were used to study the thermal expansion coefficient and anisotropic thermal expansion behavior of 2.5D SiCf/SiC ceramic matrix composites in different directions to provide certain ideas for the thermodynamic research.Thermal expansion coefficient of 12 temperature gradients in the range of 100～1 200℃in the 0°,45° and 90° directions of 2.5D SiCf/SiC ceramic matrix composite were measured respectively to analyze the influence of direction and temperature.Then simulation models in different directions were established to simulate the experimental heating process and to get thermal expansion coefficient of the material.The results show that the coefficient of thermal expansion increases with temperature rises and then gradually stabilizes.In terms of direction,the thermal expansion coefficient of the material in the direction of 45° is greater than that of the other two directions,and in the direction of 90° is the smallest.The thermal expansion coefficient is calculated through the thermal deformation data results of the simulation model.The calculated Pearson correlation coefficients are 0.968 06,0.974 19 and 0.917 37,which proves the validity of the model and lays the foundation for future research.关键词
2.5D SiCf/SiC/陶瓷基复合材料/各向异性/温度梯度/热膨胀系数Key words
2.5D SiCf/SiC/ceramic matrix composites/anisotropy/temperature gradient/coefficient of thermal expansion分类
通用工业技术引用本文复制引用
王贺权,郜加乐..SiCf/SiC陶瓷基复合材料不同方向的热膨胀性能[J].沈阳航空航天大学学报,2026,43(1):26-32,7.基金项目
辽宁省航发材料摩擦学重点实验室开放课题(项目编号:LKLAMTF202204). （项目编号:LKLAMTF202204）
