Microvoid evolution in carbon fibers during graphitization for the preparation of carbon/carbon composites
Wu, GP; Li, DH; Yang, Y; Lu, CX; Zhang, SC; Xu, Y; Li, XT; Feng, ZH; Li, ZH; Wu, ZH;李志宏; Wu ZH(吴忠华)
刊名NEW CARBON MATERIALS
2014
卷号29期号:1页码:41-46
关键词Carbon fibers Small-angle X-ray scattering Carbon layer structures Graphitization
学科分类Materials Science
DOI10.1016/S1872-5805(14)60124-4
英文摘要Polyacrylonitrile-based carbon fiber bundles, with two sides fixed, were heated in a graphitization furnace with temperature profiles similar to those used in the preparation of carbon/carbon composites. The microstructure of the microvoids formed was characterized by small-angle X-ray scattering and high resolution transmission electron microscopy (HR-TEM). Results showed that the average radius of gyration of the microvoids decreases, and their length, width, cross-sectional area and volume fraction decrease followed by a slight increase with increasing temperature, with the minima found at around 2300 C. The HR-TEM images showed that the microvoids were formed by stacking defects of the carbon layers. The ordering of the amorphous carbon layers accounted for the initial decrease of size and volume fraction of the voids with increasing temperature, while the growth and ordering of the layers at high temperatures gave rise to increases in their size and volume fraction.
收录类别SCI
WOS记录号WOS:000332350400005
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225207
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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GB/T 7714
Wu, GP,Li, DH,Yang, Y,et al. Microvoid evolution in carbon fibers during graphitization for the preparation of carbon/carbon composites[J]. NEW CARBON MATERIALS,2014,29(1):41-46.
APA Wu, GP.,Li, DH.,Yang, Y.,Lu, CX.,Zhang, SC.,...&吴忠华.(2014).Microvoid evolution in carbon fibers during graphitization for the preparation of carbon/carbon composites.NEW CARBON MATERIALS,29(1),41-46.
MLA Wu, GP,et al."Microvoid evolution in carbon fibers during graphitization for the preparation of carbon/carbon composites".NEW CARBON MATERIALS 29.1(2014):41-46.
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