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Journal of Electronic Materials

, Volume 44, Issue 10, pp 3777–3782 | Cite as

Comparison of the Magnetic and Absorption Properties of Flaky Super Sendust and Sendust Alloys

  • Qifan Li
  • Zekun Feng
  • Shuoqing Yan
  • Yan Nie
  • Xian Wang
Article

Abstract

Super Sendust and Sendust alloy powders were ball-milled for the same time to produce flakes and their static and dynamic magnetic properties were determined. The average size of flaky Super Sendust alloy particles was approximately 45.25 μm; the average size of Sendust alloy flakes was 40 μm. Fe–Si–Al–Ni flaky particle composites have better electromagnetic properties than Fe–Si–Al flaky particles; they have lower complex permittivity and a permeability that is approximately 1.5 times the permeability of Fe–Si–Al composites. Fe–Si–Al–Ni particles also have higher resonance than Fe–Si–Al composites, which contributes to a wider applied frequency band. The calculated reflection loss shows that the microwave-absorption performance of Fe–Si–Al–Ni composites exceeds that of Fe–Si–Al. In addition, the Fe–Si–Al–Ni composite’s absorbing band of the reflection loss below −5 dB can cover both the L-band and S-band for an absorber thickness of 2.3 mm; this is three times as wide as that of the Fe–Si–Al composite.

Keywords

Electromagnetic properties flaky particle  Fe–Si–Al–Ni Fe–Si–Al 

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Copyright information

© The Minerals, Metals & Materials Society 2015

Authors and Affiliations

  • Qifan Li
    • 1
  • Zekun Feng
    • 1
  • Shuoqing Yan
    • 1
  • Yan Nie
    • 1
  • Xian Wang
    • 1
  1. 1.School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhanChina

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