Improvement of the strength and toughness of carbon fiber/SiC composites via chemical vapor infiltration-grown SiC nanowire interphases
作者： Fang He , Yongsheng Liu , Zhuo Tian , Chengyu Zhang , Fang Ye
DOI: 10.1016/J.CERAMINT.2017.10.197
关键词: Composite material 、 Toughness 、 Interphase 、 Nanowire 、 Toughening 、 Fracture mechanics 、 Microstructure 、 Chemical vapor infiltration 、 Materials science
摘要: Abstract SiC nanowires (SiCnws) were used to modify the interphase of carbon fiber/pyrocarbon/SiC(Cf/PyC/SiC) composites. These SiCnws grown in fiber preform via chemical vapor infiltration(CVI). The effects these SiCnw interphases on microstructure and mechanical properties Cf/PyC/SiC composites investigated. According obtained results, containing interphases(i.e., Cf/SiCnw/PyC/SiC Cf/SiCnw/SiC) showed higher strength toughness than at both room high temperatures. superior pull-out bridging crack characteristics can account for toughening Cf/SiC upon growth interphases, which resulted with propagation resistances load standing capabilities.
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