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采用化学气相渗透法(CVI)结合反应熔体浸渗法(RMI)制备了C/SiC飞机刹车材料,对材料的微观结构进行了分析,并重点研究了连续浇水冷却刹车对材料各项性能的影响。结果表明,在连续浇水冷却刹车条件下,C/SiC刹车材料摩擦磨损性能较为稳定,湿态衰减率仅为2.64%,磨损率为1.47μm·面~(-1)·次~(-1);C/SiC刹车材料表面及内部结构完整,力学强度没有明显降低;C/SiC刹车材料基体的抗氧化性能仍然较强且热学性能稳定。因此,C/SiC刹车材料能够满足飞机全天候及在各种着陆环境下安全服役的条件。
The C / SiC aircraft brake materials were prepared by chemical vapor infiltration (CVI) combined with reactive melt infiltration (RMI), and the microstructure of the materials was analyzed. The effects of continuous watering and cooling brakes on the properties of the materials Impact. The results show that the friction and wear properties of C / SiC brake materials are stable under continuous water cooling and braking conditions. The wet wear rate is only 2.64% and the wear rate is 1.47μm · -1 (-1) -1 ); The surface and internal structure of C / SiC brake material are intact, the mechanical strength is not obviously reduced; the oxidation resistance of C / SiC brake matrix is still strong and the thermal properties are stable. As a result, C / SiC brake materials are able to meet the aircraft’s conditions of service on a 24/7 basis and in a variety of landing environments.