【摘要】 目的　对三维四向和三维正交两种碳纤维织物结构增强的碳化硅陶瓷（简称３ＤＣ／ＳｉＣ）复合材料的压缩失效规律进行研究；方法　采用先驱体转化法得到两种３ＤＣ／ＳｉＣ，在美制ＮＥＷ８１０ ＭＴＳ系统上进行压缩； 结果　三维四向碳纤维增强ＳｉＣ陶瓷（简称３ＤＢＣ／ＳｉＣ）存在两个压缩极限载荷，表现为织物结构的失稳； 而三维正交ＳｉＣ陶瓷（简称３ＤＯＣ／ＳｉＣ）只有一个极限载荷，表现为基体的破坏和纤维碎断； 结论　织物结构形式对３Ｄ Ｃ／ＳｉＣ复合材料的压缩性能有较大影响；更多还原

【Abstract】 Aim To investigate the compression failure behavior of 3D C/SiC composites. Methods The experiments were carried out on NEW 810 MTS. Results 3DB C/SiC has two limiting compression strengths and 3DO C/SiC has only one limiting compression strength. Conclusion All facts prove that the fabric structure is an important factor which affects the compression capability of 3D C/SiC.更多还原