以有机ZrC、ZrB2前驱体和聚碳硅烷的混合溶液为浸渍前驱体,利用聚合物浸渍裂解法(PIP)制备了C/C-ZrC-SiC-ZrB2复合材料,并对材料的微观形貌、弯曲和烧蚀性能进行了研究.研究结果表明:利用该方法可制备出陶瓷相填充充分且分布均匀的C/C-ZrC-SiC-ZrB2复合材料.材料的弯曲强度为126.31 MPa,断面有大量的纤维束拔出,表现出良好的假塑性断裂模式.经过120 s氧-乙炔烧蚀,材料无明显烧蚀,其线烧蚀率和质量烧蚀率分别为-2.50× 10-4 mm/s和-1.33× 10-4 g/s.在材料表面不同区域形成不同的保护层,不仅能够降低氧气和热流向材料内部扩散,还具有弥补缺陷的作用,使材料表现出优异的抗烧蚀性能.
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