Simple carbon fiber graphitization device for in-situ measurement of small angle X-ray scattering (SAXS). Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Xiao, Peng; Li, Dongfeng; Gong, Yanjun; Zhang, Shujiao; Mo, Guang; Li, Zhihong
• Is Part Of: Instrumentation science & technology. Volume 49:Issue 1(2021)
• Page Start: 21
• Page End: 31
• Publication Date: 2021-01-02
• Subjects: Carbon fibers -- direct electric heating -- graphitization device -- small angle X-ray scattering (SAXS) -- synchrotron radiation; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2020.1772818
• Languages: English
• ISSNs: 1073-9149

Abstract

Abstract: A small and simple device for the in-situ small angle X-ray scattering (SAXS) measurement of carbon fibers graphitization by direct electrical heating was developed. The graphitization process of polyacrylonitrile-based T700 carbon fibers from 1450 °C to 2100 °C with this device was followed in-situ by synchrotron radiation SAXS. The results show that there are needle-shaped voids oriented preferentially along the fibers axis with a surface fractal structure during graphitization of carbon fibers. The change in the fractal dimension as a function of temperature includes a dip with a minimum value at approximately 1700 °C. This short contribution briefly describes the device and analyzes the obtained experimental results.