Rapid microwave synthesis of coaxial SiC/carbon fibre (SiC/CF) with improved oxidation resistance and wettability. Issue 2 (1st February 2019)

• Record Type: Journal Article
• Authors: Xiao, Ting; Kuang, Jianlei; Sun, Peng; Hou, Xianjie; Wang, Qi; Jiang, Peng; Cao, Wenbin
• Is Part Of: Ceramics international. Volume 45:Issue 2(2019)Part A
• Page Start: 2432
• Page End: 2438
• Publication Date: 2019-02-01
• Subjects: SiC shell -- Microwave heating -- Oxidation resistance -- Surface wettability; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.10.167
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Coaxial SiC/carbon fibre (SiC/CF) materials were prepared via rapid microwave synthesis at 1400 °C for 30 min. X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis were performed to investigate the structure and oxidation resistance of the samples. The results showed that a uniform and continuous β-SiC shell was obtained after the oxidation, confirming that the SiC/CF samples had a coaxial structure. The shell thickness could be regulated by adjusting the Si:C molar ratio. The SiC shell improved the oxidation resistance of the CFs significantly. The surface wettability of SiC/CF was also investigated. It was found that the hydrophilic and rough SiC shell played an important role in enhancing the wettability of the CFs.