Efficient three-dimensional characterization of C/C composite reinforced with densely distributed fibers via X-ray phase-contrast microtomography  

作　　者：Ke Li Yantao Gao Haipeng Zhang Guohao Du Hefei Huang Hongjie Xu Tiqiao Xiao 李可;高彦涛;张海鹏;杜国浩;黄鹤飞;徐洪杰;肖体乔(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Synchrotron Radiation Facility/Zhangjiang Lab,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]Shanghai Synchrotron Radiation Facility/Zhangjiang Lab,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Optics Letters》2021年第7期99-104,共6页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China (Nos.2017YFA0206004,2017YFA0206002, 2018YFC1200204, and 2017YFA0403801);the National Natural Science Foundation of China(NSFC)(No.81430087)。

摘　　要：Carbon fiber(CF)/pyrolytic graphite(PG) composites are promising structural materials for molten salt reactors because of their superior performance.Due to the minor density difference between CF and PG, existing methods are impractical for efficient three-dimensional characterization of CF/PG composites.Therefore, in this study, a method based on in-line phasecontrast X-ray microtomography was developed to solve the aforementioned problem.Experimental results demonstrate that the method is suitable for comprehensive characterization of CF/PG composites.The relationship between the microporous defects and fiber orientations of such composites was also elucidated.The findings can be useful for improving the manufacturing process of CF/PG composites.

关 键 词：X-ray imaging C/C composite 3D characterization 

分 类 号：O434.19[机械工程—光学工程] TB332[理学—光学]