Effect of annealing temperature on electromagnetic absorption properties of crystalline Fe-Si-Al alloy powder-polymer composites

Sung Jae Lee, Yoon Bae Kim, Kyung Sub Lee, Dong Jin Byun, Sang Woo Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We investigated effect of annealing temperature on lattice strain of crystalline FeSiAl alloy powders and related electromagnetic absorption properties for crystalline FeSiAl alloy powder-polymer composites. The lattice strain of the microforged FeSiAl alloy powder gradually decreased with annealing temperature and highly relieved by annealing treatment at 700 °C The magnetic saturation significantly increased by the microforging and subsequent annealing treatment due to increase of the stress relaxation. The simulated power loss in the near-field regime showed high electromagnetic absorption over 31% in above 1 GHz because of annealing effect. From simulation results of magnetic field distributions in the near-field, the ferromagnetic metal powder-polymer composite showed excellent electromagnetic absorption in the GHz frequency range.

Original languageEnglish
Pages (from-to)4121-4124
Number of pages4
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume204
Issue number12
DOIs
Publication statusPublished - 2007 Dec 1

Fingerprint

Electromagnetic wave absorption
electromagnetic absorption
Powders
Polymers
Annealing
Crystalline materials
annealing
composite materials
Composite materials
polymers
Crystal lattices
near fields
Temperature
temperature
metal powder
Ferromagnetic materials
Powder metals
power loss
stress relaxation
Stress relaxation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

Cite this

Effect of annealing temperature on electromagnetic absorption properties of crystalline Fe-Si-Al alloy powder-polymer composites. / Lee, Sung Jae; Kim, Yoon Bae; Lee, Kyung Sub; Byun, Dong Jin; Kim, Sang Woo.

In: Physica Status Solidi (A) Applications and Materials Science, Vol. 204, No. 12, 01.12.2007, p. 4121-4124.

Research output: Contribution to journalArticle

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