Manufacturing isotropic carbon fibre preforms for multilayered silicon carbide composites with a pyrolytic carbon interphase
Manufacturing isotropic carbon fibre preforms for multilayered silicon carbide composites with a pyrolytic carbon interphase
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制造具有热解碳中间相的多层碳化硅复合材料的各向同性碳纤维预制件
DOI：
10.1016/j.jmapro.2018.05.033
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发表时间：
2018-08
影响因子：
6.2
通讯作者：
Cheng Laifei
中科院分区：
文献类型：
--
作者：
Mei Hui;Huang Weizhao;Hua Chengxu;Xu Yawei;Cheng Laifei
采用湿法造纸过滤法制备了具有自支撑多孔结构和随机取向的各向同性碳纤维预制体。然后将热解碳（PyC）和碳化硅（SiC）交替渗透到层合预制品中，通过化学气相渗透法制备多层复合材料（Csf/SiC- c）。研究了纤维含量和软硬多层基体对复合材料力学性能的影响。随着纤维含量的增加，基体中不含PyC （Csf/SiC）的复合材料的抗弯强度和断裂韧性增加，孔隙率降低。当纤维含量为10.2、11.8和13.9 vol%时，Csf/SiC复合材料的抗弯强度分别达到170、182和203 MPa。复合材料的力学性能具有良好的各向同性。建立了随机取向纤维的弯曲强度、纤维含量和孔隙率之间的关系模型，与实验数据吻合较好。与Csf/SiC相比，Csf/SiC- c的抗弯强度和断裂韧性分别提高了17.3%和18.3%。显微图表明，在随机取向纤维和多层PyC和SiC中，裂纹偏转消耗能量，这对提高力学性能有重要贡献。
In the present work, isotropic carbon fibre preforms with self-supporting porous structures and random orientation were fabricated through a wet papermaking filtration method. Then pyrolytic carbon (PyC) and silicon carbide (SiC) were alternatively infiltrated into the as-laminated preforms to obtain the multilayer composites (Csf/SiC-C) by the chemical vapor infiltration method. The effects of fibre content and soft-hard multilayer matrix on mechanical properties were investigated. With the increase of fibre content, the bending strength and fracture toughness of composites without PyC inside matrix (Csf/SiC) increase while the porosity decreases. When the fibre content is 10.2, 11.8, and 13.9 vol%, the bending strength of Csf/SiC composites reaches the values of 170, 182, and 203 MPa, respectively. Furthermore, the composites exhibit good isotropy in mechanical properties. A model related to random orientation fibres was established to illustrate the relationship between bending strength, fibre content and porosity, which shows good accordance with the experimental data. Compared with Csf/SiC, Csf/SiC-C shows maximum increases of 17.3% and 18.3% in bending strength and fracture toughness, respectively. It is indicated by micrographs that the energy is consumed when cracks deflect by random orientation fibres and in multilayer of PyC and SiC, which provides a major contribution for improvement in mechanical properties.
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DOI：
10.1016/j.msea.2012.04.102
发表时间：
2012-08
影响因子：
6.4
作者：
Shuang Li;Yumin Zhang;Jiecai Han;Yufeng Zhou
通讯作者：
Shuang Li;Yumin Zhang;Jiecai Han;Yufeng Zhou
DOI：
10.1016/j.msea.2012.01.118
发表时间：
2012-05
影响因子：
6.4
作者：
D. Ding;Wan-cheng Zhou;F. Luo;Malin Chen;Dongmei Zhu
通讯作者：
D. Ding;Wan-cheng Zhou;F. Luo;Malin Chen;Dongmei Zhu
热处理对不同热解碳界面厚度碳纤维/碳化硅复合材料强韧性的影响
影响因子：
10.9
作者：
Mei, Hui;Bai, Qianglai;Cheng, Laifei
通讯作者：
Cheng, Laifei
影响因子：
5.2
作者：
Wenshu Yang;L. Fuso;S. Biamino;D. Vasquez;C. Bolivar;P. Fino;C. Badini
通讯作者：
Wenshu Yang;L. Fuso;S. Biamino;D. Vasquez;C. Bolivar;P. Fino;C. Badini
模拟再入环境下碳纤维增强碳化硅螺栓的高温拉伸性能和氧化行为
影响因子：
10.9
作者：
Mei H.;Cheng L.;Ke Q.;Zhang L.
通讯作者：
Zhang L.