期刊
ACTA MATERIALIA
卷 61, 期 15, 页码 5829-5834出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2013.06.030
关键词
Fe3O4; Composites; Microstructure; Electromagnetic wave absorption
资金
- National Natural Science Foundation of China [50972060]
- Fundamental Research Funds for the Central Universities [30920130112003]
- Weapon Research Support Fund [62201070804]
- Jiangsu Province University Innovative Research Program [CXLX12_0192]
Porous Fe3O4-decorated graphene (GN-Fe3O4) composites with different microstructures were successfully synthesized by a modified two-step method. The microstructure and morphology were confirmed by X-ray diffraction (XRD), transmission electron microscopy and scanning electron microscopy. XRD studies show that the products consist of highly crystallized Fe3O4 but disorderedly stacked GN sheets. Electron microscopy images reveal that Fe3O4 nanoparticles with different sizes and microstructures are uniformly coated on both sides of GN sheets, without large vacancies or apparent aggregation. Electromagnetic wave absorption properties of epoxy containing 30 wt.% GN-Fe3O4 composites were investigated at room temperature in the frequency range of 0.5-18 GHz. In particular, the porous, flower-like Fe3O4-decorated GN sample exhibits an enhanced dielectric loss due to the porous microstructure of Fe3O4. The multiple absorbing mechanisms attribute to the improved impedance matching which indicates the as-prepared porous GN-Fe3O4 composites could be a potential candidate for lightweight electromagnetic wave absorption materials. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据