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液相硅渗透(LSI)方法制备C/SiC复合材料,相对于其他SiC基体成型技术,如化学气相渗透(CVI)、聚合物陶瓷先驱体浸渍-裂解(PIP)、化学气相反应(CVR)等,是一种低成本快速的陶瓷基复合材料(CMC)制备技术,材料致密性高,具有抗氧化性,且耐高温机械磨损性能优异,已在豪华汽车和飞机刹车盘、空间望远镜镜面、再入大气层飞行器的结构热防护系统(TPS)、超音速飞行器控制面板等方面得到实际应用[1-3]。对于工程陶瓷材料及CMC,表面和内部缺陷大小是与其强度相对应的,密度增加会提高工程陶瓷
Compared with other SiC matrix forming technologies, such as chemical vapor infiltration (CVI), PIP (precursor impregnation-cleavage), chemical vapor reaction (CVR) and so on, , Is a low-cost, fast ceramic matrix composites (CMC) preparation technology that combines high densification, oxidation resistance and excellent high temperature wear resistance. It has been used in luxury automotive and aircraft brakes, space telescope mirrors, and then Into the structure of the thermal protection system (TPS), supersonic aircraft control panel and other aspects of the actual use of the aircraft [1-3]. For engineering ceramic materials and CMC, the size of the surface and internal defects corresponds to their strength, and the increase in density will increase the volume of engineering ceramics