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Enhanced microwave absorption properties of flake-shaped FePCB metallic glass/graphene composites

  • Beihang University
  • Beijing Institute of Aeronautical Materials

科研成果: 期刊稿件文章同行评审

摘要

A novel kind of composite absorber, i.e. FePCB/graphene composite, with excellent microwave absorption properties was successfully fabricated by a simple and scalable ball milling method. After being milled, the FePCB particles displayed flaky morphology with large aspect ratio. The complex permittivity and permeability of the flaky FePCB distinctly increased compared with those before milling. Furthermore, with the introduction of graphene, the flaky FePCB/graphene composite exhibited excellent microwave absorption performance with strong absorption and wide absorption band. In particular, for FePCB/graphene composite with an absorber thickness of 2 mm, the reflection loss (RL) reached a minimum of −45.3 dB at 12.6 GHz and the effective absorption bandwidth (RL < −10 dB) covered 5.4 GHz. The enhanced microwave absorption performance of the FePCB/graphene composite was attributed to the high magnetic loss and improved impedance matching which were closely related to the flake-shaped FePCB particles and the introduction of graphene sheets.

源语言英语
页(从-至)33-39
页数7
期刊Composites Part A: Applied Science and Manufacturing
89
DOI
出版状态已出版 - 1 10月 2016

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