| Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states | |
| Dai, Bushi1; Li, Jinyang1; Wang, Weizhen1; Liu, Xiaoguang2; Qi, Yujie1; Qi, Yang1,3 | |
| Corresponding Author | Qi, Yang(qiyang@imp.neu.edu.cn) |
| 2020-12-15 | |
| Source Publication | MATERIALS LETTERS
 |
| ISSN | 0167-577X |
| Volume | 281Pages:4 |
| Abstract | The precursor was prepared by electrospinning method with Polyvinyl alcohol (PVA) as a raw material, and carbon fibers were obtained through pre-oxidation and carbonization process. The results of the experimental confirmed that different graphitization states can cause changes in microwave absorption characteristics. When the carbonization temperature was 650 degrees C, carbon fibers showed excellent microwave absorption characteristics with a minimum reflection loss value of -45.2 dB, under the effect of dielectric loss. When the carbonization temperature was 850 degrees C, carbon fibers showed excellent microwave absorption characteristics with a minimum reflection loss value of -44.4 dB, under the combined effect of eddy current loss and dielectric loss. The interface isomerization of amorphous carbon and graphitized carbon and the defects in amorphous carbon and graphitized carbon can be regarded as polarization centers, which leaded to dielectric loss. Moreover, in terms of structure, the skin effect occurred in the bridged carbon fibers which can cause eddy current loss. (C) 2020 Elsevier B.V. All rights reserved. |
| Keyword | Carbon materials Skin effect Dielectric loss Nanocrystalline materials |
| DOI | 10.1016/j.matlet.2020.128667 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Physics |
| WOS Subject | Materials Science, Multidisciplinary ; Physics, Applied |
| WOS ID | WOS:000581134200057 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/141275 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Qi, Yang |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Inst Mat Phys & Chem, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Shenyang 110819, Peoples R China |
| Recommended Citation GB/T 7714 | Dai, Bushi,Li, Jinyang,Wang, Weizhen,et al. Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states[J]. MATERIALS LETTERS,2020,281:4. |
| APA | Dai, Bushi,Li, Jinyang,Wang, Weizhen,Liu, Xiaoguang,Qi, Yujie,&Qi, Yang.(2020).Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states.MATERIALS LETTERS,281,4. |
| MLA | Dai, Bushi,et al."Carbon fibers with eddy current loss characteristics exhibit different microwave absorption properties in different graphitization states".MATERIALS LETTERS 281(2020):4. |
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