Fabrication and characterization of carbon-bonded carbon fiber composites with in-situ grown SiC nanowires. (July 2017)

• Record Type: Journal Article
• Authors: Li, Jian; Sha, Jianjun; Dai, Jixiang; Lv, Zhaozhao; Shao, Junqi; Wang, Shouhao; Zhang, Zhaofu
• Is Part Of: Carbon. Volume 118(2017)
• Page Start: 148
• Page End: 155
• Publication Date: 2017-07
• Subjects: Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2017.03.048
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: In order to improve the mechanical properties of CBCFCs, the CBCFCs with in-situ grown SiC nanowires (SiCNW ) were fabricated based on the chemical vapor reaction process and precursor impregnation and pyrolysis (PIP) process. The effect of multi-scaled reinforcements (micro-scaled carbon fibers and nano-scaled SiCNW ) on the mechanical properties was investigated. The phase, microstructure and fracture surface of the composites were characterized by XRD, SEM and TEM. Microstructure characterization found that the in-situ grown SiCNW randomly distributed in the matrix and formed a network structure in the CBCFCs. The carbon fibers and the SiCNW formed the multi-scaled reinforcements can significantly improve the mechanical properties of CBCFCs. More importantly, the orientation anisotropy on mechanical properties of the composites is also obviously deceased due to the in-situ grown SiCNW . The improved mechanical properties and decreased orientation anisotropy could be attributed to the pull-out and bridging of carbon fibers and SiCNW, which formed multi-scaled reinforcements. Graphical abstract: