Microvoid evolution in carbon fibers during graphitization for the preparation of carbon/carbon composites
文献类型：期刊论文
| 作者 | Wu, GP; Li, DH; Yang, Y; Lu, CX; Zhang, SC; Xu, Y; Li, XT; Feng, ZH; Li, ZH; Wu, ZH;李志宏 |
| 刊名 | NEW CARBON MATERIALS
 |
| 出版日期 | 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 |
| 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. |
| 学科主题 | Materials Science |
| 收录类别 | SCI |
| WOS记录号 | WOS:000332350400005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225207]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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