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该工艺以液烃为前驱体 ,多孔碳坯体浸在液烃中一次完成致密化。沉积温度为 80 0℃～ 950℃时 ,坯体经 2h～ 3h致密 ,其密度达 1.62g/cm3～ 1.74g/cm3。以环己烷为前驱体制备的C/C试样具有良好的耐摩擦性能 ,动摩擦系数为 0 .2～ 0 .4 ,静摩擦系数为 0 .2 5,每次刹车磨耗为 0 .89μm ,满足高性能刹车材料的要求。此外 ,该工艺所需设备结构简单 ,工件尺寸放大不受技术性限制 ,是一种很有开发价值的低成本、快速致密C/C材料的方法。
The process uses liquid hydrocarbon as a precursor, and the porous carbon body is immersed in a liquid hydrocarbon to complete densification once. When the deposition temperature is 80 0 ℃ ~ 950 ℃, the density of the green body is 2h ~ 3h, the density is 1.62g / cm3 ~ 1.74g / cm3. C / C samples prepared with cyclohexane as precursor have good frictional resistance, dynamic friction coefficient of 0.2 ~ 0.4, static friction coefficient of 0.25, each brake wear is 0.89μm, satisfying High-performance brake material requirements. In addition, the equipment required for the process is simple, and the size of the workpiece is not limited by the technical limitations. Therefore, it is a promising method for low-cost, fast and compact C / C materials.