Electromagnetic and microwave absorbing properties of raw and milled FeSiCr particles

R. B. Yang, W. F. Liang, C. C. Chen, Siu-Tong Choi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

FeSiCr alloy (Fe: 90%, Si: 7.9%, and Cr: 2.1%) with pre-milled flaky shape was re-milled in a planetary ball-mill for 30 h. The complex permittivity (ε′-jε′) and permeability (μ′-jμ′) are measured by using the transmission/reflection method for two different aspect ratios of flake-shaped FeSiCr/epoxy composites for 30%, 40%, and 50% weight ratios. Dielectric loss tangent and magnetic loss tangent of re-milled FeSiCr powder show larger electromagnetic wave energy dissipation than those of the raw flaky FeSiCr powder. For 30wt. % of FeSiCr/epoxy absorbers with 2mm thickness, the calculated reflection loss reaches -25dB at 13.0GHz for raw flaky powder, -40dB at 11.4GHz for the re-milled FeSiCr powder with higher aspect ratios.

Original languageEnglish
Article number17B536
JournalJournal of Applied Physics
Volume115
Issue number17
DOIs
Publication statusPublished - 2014 May 7

Fingerprint

electromagnetism
microwaves
tangents
flakes
high aspect ratio
dielectric loss
aspect ratio
balls
absorbers
electromagnetic radiation
permeability
energy dissipation
permittivity
composite materials

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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title = "Electromagnetic and microwave absorbing properties of raw and milled FeSiCr particles",
abstract = "FeSiCr alloy (Fe: 90{\%}, Si: 7.9{\%}, and Cr: 2.1{\%}) with pre-milled flaky shape was re-milled in a planetary ball-mill for 30 h. The complex permittivity (ε′-jε′) and permeability (μ′-jμ′) are measured by using the transmission/reflection method for two different aspect ratios of flake-shaped FeSiCr/epoxy composites for 30{\%}, 40{\%}, and 50{\%} weight ratios. Dielectric loss tangent and magnetic loss tangent of re-milled FeSiCr powder show larger electromagnetic wave energy dissipation than those of the raw flaky FeSiCr powder. For 30wt. {\%} of FeSiCr/epoxy absorbers with 2mm thickness, the calculated reflection loss reaches -25dB at 13.0GHz for raw flaky powder, -40dB at 11.4GHz for the re-milled FeSiCr powder with higher aspect ratios.",
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Electromagnetic and microwave absorbing properties of raw and milled FeSiCr particles. / Yang, R. B.; Liang, W. F.; Chen, C. C.; Choi, Siu-Tong.

In: Journal of Applied Physics, Vol. 115, No. 17, 17B536, 07.05.2014.

Research output: Contribution to journalArticle

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AU - Yang, R. B.

AU - Liang, W. F.

AU - Chen, C. C.

AU - Choi, Siu-Tong

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