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| 论文编号: |
122214O120120062 |
| 第一作者所在部门: |
708组 |
| 中文论文题目: |
Carbon layer structures and thermal conductivity of graphitized carbon fibers
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| 英文论文题目: |
Carbon layer structures and thermal conductivity of graphitized carbon fibers
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| 论文题目英文: |
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| 作者: |
吴刚平
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| 论文出处: |
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| 刊物名称: |
Journal of Materials Science
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| 年: |
2012
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| 卷: |
47 |
| 期: |
6 |
| 页: |
2882-2890 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
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| 摘要: |
The results of X-ray diffraction on polyacrylonitrile-based carbon fibers graphitized at temperatures from 1800 to 2500 C are reported. The carbon crystallites consist of graphene-layer stacks. A Hirsch analysis showed that the average graphene stack height increased with temperature up to *2000 C, reaching a relatively stable stack height thereafter. The average lateral layer size increased from 0.88 nm for the as-received fibers to 3.37 nm at 2500 C. With increasing temperature the formation of microfibrillar structures was observed, accompanied by the flattening of carbon layers. The changes in electrical and thermal properties were in good agreement with the aspect ratio of carbon layers. |
| 英文摘要: |
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