Dielectric and microwave absorption properties of FeSiAl/Al2O3 composites containing FeSiAl particles of different sizes

Zhou, Liang; Yan, Junxiao; Huang, Julong; Wang, Hongbo; Wang, Xingang; Wang, Zhenjun

doi:10.1016/j.ceramint.2020.11.129

Cited by 30 publications

(2 citation statements)

References 46 publications

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“…GHz could reach − 34.4 dB [15]. Chen et al achieved successful coating of ZnFe2O4 onto the surface of FeSiCr powders using the hydrotherµal µethod.…”

Section: Introductionmentioning

confidence: 99%

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

Hou,

Ma,

Yang

et al. 2024

Preprint

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Flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composites were successfully synthesized using ball milling and the hydrothermal method. The microstructure, morphology, and phase composition of flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composites were analyzed using XRD, EDS and SEM techniques, confirming the successful preparation of the composite materials. The electromagnetic wave absorption characteristics of the composite with varying contents of Ni0.5Zn0.5Fe2O4 were comprehensively investigated. The electromagnetic properties of flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composite materials were analyzed by VSM. The results showed a reduction in the real part of the permittivity, but this led to the optimization of impedance matching. This improvement was attributed to the synergistic effect of magnetic loss and dielectric loss, thereby enhancing the overall electromagnetic performance of the composite. The sample prepared with a composition of 40% (wt %) Ni0.5Zn0.5Fe2O4 composite displayed the most pronounced absorption performance. At a frequency of 4.3 GHz, the minimum reflection loss achieved was − 41.3 dB. The maximum effective absorption bandwidth measured 5.6 GHz. Notably, through adjustment of the composite material thickness, the effective absorption bandwidth could be broadened to 10.5 GHz (2.5–13.0 GHz), encompassing the entire C and X bands.

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“…GHz could reach − 34.4 dB [15]. Chen et al achieved successful coating of ZnFe2O4 onto the surface of FeSiCr powders using the hydrotherµal µethod.…”

Section: Introductionmentioning

confidence: 99%

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

Hou,

Ma,

Yang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…In recent years, the application of electromagnetic waves in military and civilian fields has gained momentum [1][2][3]. However, everything is a double-edged sword.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Dielectric Properties of a Flexible Anisotropic Rubber-Based Composite

et al. 2022

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Rubber-based conductive composites are widely used in sensors, wearable electronic devices and electromagnetic fields. In this work, by using the two-roll milling and hot-pressing process, chopped glass fiber (CGF) and graphene (Gr) as additives, and acrtlinitrile-brtadiene rubber (NBR) as the matrix, a series of anisotropic flexible rubber-based composites were prepared. Using this preparation method, both CGF and Gr additives were directly arranged in the material. When the content of CGF was 1 wt.%, the tensile strength in both the T and W directions of the material reached 27 MPa and 28 MPa, respectively. When the content of CGF was fixed at 1 wt.% and Gr was 1.5 wt.% and the elongation at break in both directions reached 328% and 347%. By focusing on the comparison of the dielectric differences in the T and W directions in the X band, it was found that the directional arrangement of the additives led to differences in the dielectric properties.

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The Strong Broadband Microwave Absorption Properties of FeSiCr@Ni_0.5Zn_0.5Fe₂O₄ Composites Realized by Optimizing Impedance Matching

Hou,

Ma,

Yang

et al. 2024

Physica Status Solidi (a)

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Flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composites are successfully synthesized via ball milling and hydrothermal method. The microstructure, morphology, and phase composition of flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composites are analyzed using X‐Ray diffractometer, energy dispersive spectroscopy, scanning electron microscope, and transmission electron microscope techniques. The electromagnetic wave absorption characteristics of the composite with varying contents of Ni0.5Zn0.5Fe2O4 are comprehensively investigated. The results show that the introduction of Ni0.5Zn0.5Fe2O4 reduces the permittivity, improves the synergistic effect of magnetic loss and dielectric loss, optimizes the impedance matching, and enhances the overall electromagnetic performance of the composites. The sample prepared with a composition of 40 wt% Ni0.5Zn0.5Fe2O4 displays the most pronounced absorption performance. The RLmin (reflection loss) reached −41.3 dB at 4.3 GHz, and the maximum effective absorption bandwidth (EAB) reaches 5.6 GHz which is 7–8 times that of the original sample. Notably, through adjusting the thickness of composites, the EAB could be broadened to 10.5 GHz (2.5–13.0 GHz), encompassing the entire C and X bands. The flaky FeSiCr@Ni0.5Zn0.5Fe2O4 composites have the advantages of wide source of raw materials, strong microwave absorption ability, and wide absorption frequency range, and are expected to become a potential microwave absorption material in the future.

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Dielectric and microwave absorption properties of FeSiAl/Al2O3 composites containing FeSiAl particles of different sizes

Cited by 30 publications

References 46 publications

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

Mechanical and Dielectric Properties of a Flexible Anisotropic Rubber-Based Composite

The Strong Broadband Microwave Absorption Properties of FeSiCr@Ni_0.5Zn_0.5Fe₂O₄ Composites Realized by Optimizing Impedance Matching

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Dielectric and microwave absorption properties of FeSiAl/Al2O3 composites containing FeSiAl particles of different sizes

Cited by 30 publications

References 46 publications

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

The strong broadband microwave absorption properties of FeSiCr@Ni 0.5 Zn 0.5 Fe 2 O 4 composite materials realized by optimizing impedance matching

Mechanical and Dielectric Properties of a Flexible Anisotropic Rubber-Based Composite

The Strong Broadband Microwave Absorption Properties of FeSiCr@Ni0.5Zn0.5Fe2O4 Composites Realized by Optimizing Impedance Matching

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The Strong Broadband Microwave Absorption Properties of FeSiCr@Ni_0.5Zn_0.5Fe₂O₄ Composites Realized by Optimizing Impedance Matching