介绍了纤维及预制体成型、高温处理、界面技术、基体致密化及后处理等工艺因素对碳化硅基复合材料机械性能的影响.基体致密化工艺是影响复合材料性能最为主要的因素,化学气相渗透工艺制备的碳化硅基复合材料的强度和韧性明显高于其它工艺制备的复合材料.预制体高温处理可提高纤维在基体复合材料及使用过程中的高温稳定性,减少纤维/基体界面的热应力,但高温处理会引起纤维强度大幅度下降,在高温处理前先进行中间相涂层处理,不仅可提高复合材料的韧性和稳定性,而且可减少纤维强度损失.采用经过适当表面处理的纤维,提高纤维与基体的结合强度,可增加基体中微裂纹的数目,使复合材料的强度和韧性同时得到提高.
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