Low-cost preparation and frictional behaviour of a three-dimensional needled carbon/silicon carbide composite
Low-cost preparation and frictional behaviour of a three-dimensional needled carbon/silicon carbide composite
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DOI：
10.1016/j.jeurceramsoc.2008.06.021
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发表时间：
2009-02
影响因子：
5.7
通讯作者：
Yanzhi Cai;Yongdong Xu;Bin Li;Shangwu Fan;Litong Zhang;Lai-fei Cheng;Lin Yu
中科院分区：
文献类型：
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作者：
Yanzhi Cai;Yongdong Xu;Bin Li;Shangwu Fan;Litong Zhang;Lai-fei Cheng;Lin Yu
采用酚醛树脂浸渍-热解结合液态硅渗透法制备了低成本的C/SiC复合材料。采用三维针刺法制备了碳纤维预制体。采用热压固化法制备了密度为1.22g/cm ~ 3的炭/炭复合材料。C/SiC复合材料的密度为2.10g/cm ~ 3，孔隙率为4.50%，SiC含量为45.73%。C/SiC复合材料在垂直摩擦面方向的热导率为48.72W/（mK），表现出良好的摩擦磨损性能。静摩擦系数和平均动摩擦系数分别为0.68和0.32（制动速度为28 m/s）。在制动速度为28 m/s时，旋转盘和静止盘的重量磨损率分别为7.71和5.60mg/cycle，线磨损率分别为1.67和1.22μm/cycle。
A low-cost carbon/silicon carbide (C/SiC) composite was manufactured by phenolic resin impregnation–pyrolysis combined with liquid silicon infiltration. The carbon fiber preform was prepared by three-dimensional needling. A carbon/carbon composite with a density of 1.22g/cm3after only one impregnation–pyrolysis cycle was achieved by using hot-pressing curing. The density of the final C/SiC was 2.10g/cm3with a porosity of 4.50% and SiC-content of 45.73%. The C/SiC composite had a high thermal conductivity of 48.72W/(mK) perpendicular to the friction surface and demonstrated good friction and wear properties. The static and average dynamic friction coefficients were 0.68 and 0.32 (at a braking velocity of 28m/s). The weight wear rates of the rotating disk and stationary disk were respectively 7.71 and 5.60mg/cycle with linear wear rates, 1.67 and 1.22μm/cycle, at a braking velocity of 28m/s.