Carbon Nanotubes/FeSiAl Hybrid Flake for Enhanced Microwave Absorption Properties

Li, Hongyan; Cheng, Hang; Liu, Hongjin; Long, Long; Liu, Xianguo

doi:10.1007/s11664-022-09928-6

Cited by 7 publications

(2 citation statements)

References 32 publications

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“…FeSiAl, as a type of soft magnetic alloy, has become widely used in the microwave absorption field for its excellent magnetic properties such as high saturation magnetization and high eddy current loss causing by its high permeability in the low-frequency range [26][27][28]. However, its high conductivity, along with a low Snoek limit at a high frequency, limit its application [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Multifunctional Silylated GO/FeSiAl Epoxy Composites: A Heat Conducting Microwave Absorber for 5G Base Station Packaging

Xie,

Xiao,

et al. 2023

Materials

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A multifunctional microwave absorber with high thermal conductivity for 5G base station packaging comprising silylated GO/FeSiAl epoxy composites were fabricated by a simple solvent-handling method, and its microwave absorption properties and thermal conductivity were presented. It could act as an applicable microwave absorber for highly integrated 5G base station packaging with 5G antennas within a range of operating frequency of 2.575–2.645 GHz at a small thickness (2 mm), as evident from reflection loss with a maximum of −48.28 dB and an effective range of 3.6 GHz. Such a prominent microwave absorbing performance results from interfacial polarization resonance attributed to a nicely formed GO/FeSiAl interface through silylation. It also exhibits a significant enhanced thermal conductivity of 1.6 W/(mK) by constructing successive thermal channels.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Multifunctional Silylated GO/FeSiAl Epoxy Composites: A Heat Conducting Microwave Absorber for 5G Base Station Packaging

Xie,

Xiao,

et al. 2023

Materials

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“…For instance, Sun et al prepared an FeSiAl/graphite composite by using the ball milling method, and the absorption bandwidth with an RL value lower than −10 dB reached up to 2.4 GHz (13.68~16.08 GHz) at 1.5 mm [17]. Nowadays, Li et al constructed a CNTs/FeSiAl composite through the in suit growth of CNTs on FeSiAl flakes, which achieved less than −10 dB bandwidth from 12 to 15.52 GHz with a thickness of 1.7 mm [18]. The previous study demonstrated that the dielectric response of magnetic absorbers is regulated by doping carbon-based materials, and the absorption bandwidth is broadened effectively.…”

Section: Introductionmentioning

confidence: 99%

Microwave All-Dielectric Metamaterial Design of FeSiAl/MWCNT Composite for Low-Frequency Broadband-Absorbing Properties

Wang,

Guo,

Dai

et al. 2023

Metals

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FeSiAl flakes were fabricated by vibrating ball milling the FeSiAl ribbons. And the microwave absorption properties of FeSiAl flakes were improved by doping the multi-wall carbon nanotubes (MWCNTs) with different mass concentrations. The results show that the FeSiAl/MWCNT composites exhibit significantly improved microwave absorption performance with advantages of strong and broadband absorption in the L-band and S-band. In particular, the reflection loss (RL) of the FeSiAl/MWCNT2 composite reaches −7.4 dB at 1.0 GHz, whereupon, through the electromagnetic simulation software CST Microwave Studio, FeSiAl/MWCNT2 all-dielectric metamaterial absorbers (ADMMAs) were macroscopically designed, achieving an ultra-wideband absorption (RL ≤ −10 dB) of 14.4 GHz (3.6~18.0 GHz). It is recognized that the standing wavelength resonance and diffraction effect are responsible for absorbing electromagnetic waves, and the broadband absorption is improved via dielectric dispersion; their synergistic effect makes the ADMMAs exhibit good microwave absorption performance. This work provides a useful method for designing microwave absorption materials with broadband absorption.

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Flaky FeSiAl powders with high permeability towards broadband microwave absorption through tuning aspect ratio

Cao

Liu

et al. 2023

J Mater Sci: Mater Electron

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Carbon Nanotubes/FeSiAl Hybrid Flake for Enhanced Microwave Absorption Properties

Cited by 7 publications

References 32 publications

Fabrication of Multifunctional Silylated GO/FeSiAl Epoxy Composites: A Heat Conducting Microwave Absorber for 5G Base Station Packaging

Fabrication of Multifunctional Silylated GO/FeSiAl Epoxy Composites: A Heat Conducting Microwave Absorber for 5G Base Station Packaging

Microwave All-Dielectric Metamaterial Design of FeSiAl/MWCNT Composite for Low-Frequency Broadband-Absorbing Properties

Flaky FeSiAl powders with high permeability towards broadband microwave absorption through tuning aspect ratio

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