期刊
MATERIALS RESEARCH BULLETIN
卷 60, 期 -, 页码 589-595出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2014.09.032
关键词
Composites; Nanostructures; Microstructure; Magnetic properties; Dielectric properties
资金
- National Natural Science Foundation of China [51274106]
- China Postdoctoral Science Foundation [2013M510418]
- Science and Technology Support Program of Jiangsu Province [BE2012143]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [12KJA430001]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1301055B]
FeCo/C hybrid nanofibers (FeCo/C HNFs) with short multi-walled carbon nanotubes grown on the nanofiber surfaces have been prepared by electrospinning combined with stabilization and carbonization. The in-situ formed FeCo nanoparticles uniformly disperse along nanofibers and are encapsulated with ordered graphite layers. It is found that the as-prepared FeCo/C HNFs exhibit excellent microwave absorption performance with low density and small absorber thickness. Reflection loss exceeding -20 dB can be obtained in a wide frequency range of 7.2-18 GHz for the silicone composites containing only 5 wt. % FeCo/C HNFs as filler by choosing an appropriate absorber thickness between 1.4 and 3.0 mm, and the minimum reflection loss reaches -47.5 dB at 16.6 GHz for a 1.6 mm absorber layer, indicating that the FeCo/C FINFs can be a promising candidate for lightweight, highly-efficient and stable microwave absorbing materials in X- and Ku-bands. (C) 2014 Elsevier Ltd. All rights reserved.
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