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对Ｓａｔｉｎｅ、Ｐｌａｉｎ 两种编织方式和不同涂层的Ｈｉ－Ｎｉｃａｌｏｎ 纤维，采用气相浸渍（ＣＶＩ）工艺技术制备出纤维强化型ＳｉＣｆ／ＳｉＣ复合材料，获得其室温至１７７３Ｋ温度范围内３ 点弯曲实验断裂强度曲线。分析Ｓａｔｉｎｅ、Ｐｌａｉｎ 两种二维纺织方法以及纤维涂层（碳、ＢＮ）对ＳｉＣｆ／ＳｉＣ复合材料弯曲断裂强度的影响。结果表明，Ｓａｔｉｎｅ样品的平均断裂强度高于Ｐｌａｉｎ 样品。而纤维涂层虽然使ＳｉＣｆ／ＳｉＣ复合材料的断裂强度有不同程度的下降，但其宏观塑性（挠度）得到明显提高，而且ＢＮ 涂层还使其高温强度增加。热处理工艺对样品弯曲断裂强度影响的实验表明，随着热处理温度升高，材料强度下降，宏观塑性提高。
The fiber reinforced SiCf / SiC composites were prepared by gas-phase impregnation (CVI) technology using two kinds of Satine and Plain weaves and Hi-Nicalon fibers with different coatings. The three-point bend test was obtained at room temperature to 1773K Intensity curve. The two-dimensional Satinet and Plain two-dimensional textile methods and the influence of fiber coatings (carbon and BN) on the flexural rupture strength of SiCf / SiC composites were analyzed. The results show that the average breaking strength of Satine samples is higher than that of Plain samples. While the fiber coating decreases the fracture strength of SiCf / SiC composites to some extent, the macroscopic plasticity (deflection) is obviously improved, and the BN coating also increases the high temperature strength. Experiments on the influence of heat treatment on the flexural strength of samples show that with the increase of heat treatment temperature, the strength of the material decreases and the macroscopic plasticity increases.