Impact of Fe deposition on microwave absorption properties of ordered mesoporous carbon flakes
| Autor: | Bin Zhao, Junzhao Ren, Yewen Xu, Buqing Mei, Xumin Fang, Hongyan Wu, Guozhu Shen |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Permittivity Materials science Fabrication Composite number Reflection loss Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Specific surface area 0103 physical sciences Dielectric loss Electrical and Electronic Engineering Composite material Absorption (electromagnetic radiation) Microwave |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:15321-15330 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-01905-w |
| Popis: | Lightweight ordered mesoporous carbon (OMC) flakes have been successfully synthesized by an evaporation-induced self-assembly route. The highest specific surface area and pore volume of the OMC flakes reach 1727 m2 g−1 and 2.05 cm3 g−1, respectively. The results of the complex permittivity show the OMC/paraffin composites have high dielectric loss in the frequency range of 2–18 GHz. In order to enhance the microwave absorption properties of the OMC materials, an electroless plating method is exploited to deposit Fe particles on the OMC flakes. Benefiting from the magnetic loss and improved impedance characteristic, the OMC/Fe composites display excellent microwave absorption properties. The minimum reflection loss of the OMC-700-Fe composite reaches − 65.3 dB at 10.1 GHz and the absorption bandwidth |
| Databáze: | OpenAIRE |
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