Enhanced electromagnetic wave absorption of hybrid-architectures Co@SiOxC
文献类型：期刊论文
| 作者 | Ge, Jianwen2; Cui, Yu1; Liu, Li2; Li, Rui2; Meng, Fandi2; Wang, Fuhui2 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2020-08-05 |
| 卷号 | 831页码:12 |
| 关键词 | Co@SiOxC composites KH-550 Carbon Microwave absorption performance |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2020.154442 |
| 通讯作者 | Liu, Li(liuli@mail.neu.edu.cn) |
| 英文摘要 | Rational design on the well wrapped core-shell microstructure of Co@SiOxC composites was successfully conducted through reduction process of cobalt, efficient condensation reaction of KH-550 silane coupling agent as well as high temperature calcination. The SiOxC shell possessed 3D cross-linked network structure consisting of dielectric carbon and silicon composition for optimal electromagnetic matching. The microstructure, morphology, elements distribution, electromagnetic property and microwave absorption performance were fully characterized, respectively. This SiOxC shell effectively inhibited the agglomeration of cobalt particles, and regulated the complex electromagnetic parameters by decreasing permittivity and introducing polarization relaxation, all of which determined the efficient reflection loss with RLmin value of -60.3 dB at 16.2 GHz and matching thickness of only 2.05 mm. Meanwhile, the effective absorption band is up to 7.1 GHz at 2.3 mm. By optimizing of core-shell structure and material components, the high-absorption performance was obtained through impedance matching, multi-interfacial polarizations, dipole (or defects) polarization and magnetic loss. Therefore, the Co@ SiOxC composites present a facile and promising route toward the design of large-scale-preparation and excellent microwave absorbing materials. (C) 2020 Elsevier B.V. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[51622106] ; Fundamental Research Funds for the Central Universities[2017YFB0702303] ; Liao Ning Revitalization Talents Program[XLYC1807076] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000531727400004 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Liao Ning Revitalization Talents Program |
| 源URL | [http://ir.imr.ac.cn/handle/321006/138825]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Li |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge, Jianwen,Cui, Yu,Liu, Li,et al. Enhanced electromagnetic wave absorption of hybrid-architectures Co@SiOxC[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,831:12. |
| APA | Ge, Jianwen,Cui, Yu,Liu, Li,Li, Rui,Meng, Fandi,&Wang, Fuhui.(2020).Enhanced electromagnetic wave absorption of hybrid-architectures Co@SiOxC.JOURNAL OF ALLOYS AND COMPOUNDS,831,12. |
| MLA | Ge, Jianwen,et al."Enhanced electromagnetic wave absorption of hybrid-architectures Co@SiOxC".JOURNAL OF ALLOYS AND COMPOUNDS 831(2020):12. |
入库方式： OAI收割
来源：金属研究所
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