Graphite/Epoxy-Coated Flaky FeSiCr Powders with Enhanced Microwave Absorption

Haonan Zhang; Xichun Zhong; Jinwen Hu; Na He; Hanxing Xu; Xuefeng Liao; Qing Zhou; Zhongwu Liu; Raju V. Ramanujan

doi:10.3390/met13091611

Graphite/Epoxy-Coated Flaky FeSiCr Powders with Enhanced Microwave Absorption

Haonan Zhang, Xichun Zhong^*, Jinwen Hu, Na He, Hanxing Xu, Xuefeng Liao, Qing Zhou, Zhongwu Liu, Raju V. Ramanujan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Flake-shaped FeSiCr (FFSC) material is expected to be a promising microwave absorbent due to its excellent magnetic properties and environmental resistance. By introducing carbon-based materials through suitable coatings, the electromagnetic parameters and energy loss can be tuned to improve the performance of FFSC. A facile solution-blending method was deployed to prepare graphite- and epoxy resin-encapsulated FFSC (FFSC@G/E) powders with a core–shell structure. FFSC@G₂₀₀₀/E showed excellent performance in the X band (8–12 GHz), a minimum reflection loss (RL_min) of −42.77 dB at a thickness of 3 mm and a maximum effective absorption bandwidth (EAB_max, RL < −10 dB) that reached 4.55 GHz at a thickness of 2.7 mm. This work provides a route for the production of novel high-performance microwave absorbers.

Original language	English
Article number	1611
Journal	Metals
Volume	13
Issue number	9
DOIs	https://doi.org/10.3390/met13091611
Publication status	Published - Sept 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 by the authors.

ASJC Scopus Subject Areas

General Materials Science
Metals and Alloys

Keywords

carbon materials
coating
fake-shaped FeSiCr material
microwave absorption

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10.3390/met13091611

Cite this

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title = "Graphite/Epoxy-Coated Flaky FeSiCr Powders with Enhanced Microwave Absorption",

abstract = "Flake-shaped FeSiCr (FFSC) material is expected to be a promising microwave absorbent due to its excellent magnetic properties and environmental resistance. By introducing carbon-based materials through suitable coatings, the electromagnetic parameters and energy loss can be tuned to improve the performance of FFSC. A facile solution-blending method was deployed to prepare graphite- and epoxy resin-encapsulated FFSC (FFSC@G/E) powders with a core–shell structure. FFSC@G2000/E showed excellent performance in the X band (8–12 GHz), a minimum reflection loss (RLmin) of −42.77 dB at a thickness of 3 mm and a maximum effective absorption bandwidth (EABmax, RL < −10 dB) that reached 4.55 GHz at a thickness of 2.7 mm. This work provides a route for the production of novel high-performance microwave absorbers.",

keywords = "carbon materials, coating, fake-shaped FeSiCr material, microwave absorption",

author = "Haonan Zhang and Xichun Zhong and Jinwen Hu and Na He and Hanxing Xu and Xuefeng Liao and Qing Zhou and Zhongwu Liu and Ramanujan, {Raju V.}",

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language = "English",

volume = "13",

journal = "Metals",

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T1 - Graphite/Epoxy-Coated Flaky FeSiCr Powders with Enhanced Microwave Absorption

AU - Zhang, Haonan

AU - Zhong, Xichun

AU - Hu, Jinwen

AU - He, Na

AU - Xu, Hanxing

AU - Liao, Xuefeng

AU - Zhou, Qing

AU - Liu, Zhongwu

AU - Ramanujan, Raju V.

PY - 2023/9

Y1 - 2023/9

N2 - Flake-shaped FeSiCr (FFSC) material is expected to be a promising microwave absorbent due to its excellent magnetic properties and environmental resistance. By introducing carbon-based materials through suitable coatings, the electromagnetic parameters and energy loss can be tuned to improve the performance of FFSC. A facile solution-blending method was deployed to prepare graphite- and epoxy resin-encapsulated FFSC (FFSC@G/E) powders with a core–shell structure. FFSC@G2000/E showed excellent performance in the X band (8–12 GHz), a minimum reflection loss (RLmin) of −42.77 dB at a thickness of 3 mm and a maximum effective absorption bandwidth (EABmax, RL < −10 dB) that reached 4.55 GHz at a thickness of 2.7 mm. This work provides a route for the production of novel high-performance microwave absorbers.

AB - Flake-shaped FeSiCr (FFSC) material is expected to be a promising microwave absorbent due to its excellent magnetic properties and environmental resistance. By introducing carbon-based materials through suitable coatings, the electromagnetic parameters and energy loss can be tuned to improve the performance of FFSC. A facile solution-blending method was deployed to prepare graphite- and epoxy resin-encapsulated FFSC (FFSC@G/E) powders with a core–shell structure. FFSC@G2000/E showed excellent performance in the X band (8–12 GHz), a minimum reflection loss (RLmin) of −42.77 dB at a thickness of 3 mm and a maximum effective absorption bandwidth (EABmax, RL < −10 dB) that reached 4.55 GHz at a thickness of 2.7 mm. This work provides a route for the production of novel high-performance microwave absorbers.

KW - carbon materials

KW - coating

KW - fake-shaped FeSiCr material

KW - microwave absorption

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ER -

Graphite/Epoxy-Coated Flaky FeSiCr Powders with Enhanced Microwave Absorption

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

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