Microstructure and properties of needle punching chopped carbon fiber reinforced carbon and silicon carbide dual matrix composite
Microstructure and properties of needle punching chopped carbon fiber reinforced carbon and silicon carbide dual matrix composite
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针刺短切碳纤维增强碳和碳化硅双基复合材料的组织与性能
DOI：
10.1016/j.ceramint.2016.03.031
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发表时间：
2016-06
影响因子：
5.2
通讯作者：
Xiao Peng
中科院分区：
文献类型：
--
作者：
Li Zhuan;Long Ying;Li Yang;Li Jin-wei;Xiong Xiang;Xiao Peng
采用化学气相渗透（CVI）结合液态硅渗透法制备了短切碳纤维预制体增强C/SiC双基体复合材料（C/C-SiC）。预制体是通过反复搭接短切碳纤维网和针刺技术制备的。建立了预制体孔结构的几何模型，计算了CVI过程中反应气体的输运。研究了C/C-SiC复合材料的显微结构和性能。结果表明，随着预制体密度的增加，其致密化所需的CVI时间急剧缩短，渗透率降低。C/C-SiC复合材料具有良好的力学性能，尤其是优异的压缩性能，其垂直压缩强度和平行压缩强度分别达到359（±40）MPa和257（±35）MPa。随着滑动速度的增加，摩擦系数（COF）从0.60（8 m/s时）逐渐减小，在20 m/s和24 m/s时，COF稳定在0.35左右，且COF的变化对滑动距离不敏感。不同速度下的磨损率在0.012 ~ 0.024 cm 3/MJ之间。这些结果表明，短切碳纤维预制体增强C/C-SiC是高性能、低成本摩擦复合材料的理想选择。
Chopped carbon fiber preform reinforced carbon and SiC dual matrix composites (C/C–SiC) were fabricated by chemical vapor infiltration (CVI) combined with liquid silicon infiltration. The preform was fabricated by repeatedly overlapping chopped carbon fiber web and needle punching technique. A geometry model of the pore structure of the preform was built and reactant gas transportation during the CVI was calculated. The microstructure and properties of the C/C–SiC composites were investigated. The results indicated that the CVI time for densification of the preform decrease sharply, and the model showed the permeability of the preform decreased with the increase of its density. The C/C–SiC exhibited good mechanical characteristics, especially excellent compressive behavior, with the vertical and parallel compressive strength reached to 359(±40) MPa and 257(±35) MPa, respectively. The coefficient of friction (COF) decreased from 0.60 (at 8 m/s) with the increase of sliding velocity, and finally stabilized at ~0.35 under the velocity of 20 m/s and 24 m/s, and the variations of COF were not sensitive to the sliding distance. The wear rates were between 0.012 cm3/MJ and 0.024 cm3/MJ under different velocities. These results showed that the chopped carbon fiber preform reinforced C/C–SiC are promising candidates for high-performance and low-cost friction composites.
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影响因子：
9.1
作者：
Shangwu Fan;Litong Zhang;Lai-fei Cheng;G. Tian;Shangjie Yang
通讯作者：
Shangwu Fan;Litong Zhang;Lai-fei Cheng;G. Tian;Shangjie Yang
影响因子：
2.6
作者：
W. Krenkel
通讯作者：
W. Krenkel
DOI：
10.1111/j.1744-7402.2012.02812.x
发表时间：
2012-07
影响因子：
2.1
作者：
R. Renz;G. Seifert;W. Krenkel
通讯作者：
R. Renz;G. Seifert;W. Krenkel
液态硅浸渗碳纤维增强C/SiC双基复合材料的制备及摩擦学性能
影响因子：
3.5
作者：
Li Zhuan;Xiao Peng;Xiong Xiang;Huang Bo-yun
通讯作者：
Huang Bo-yun
影响因子：
3.6
作者：
E. Dujardin;S. Mann
通讯作者：
E. Dujardin;S. Mann