CEMS Study on Fe-Si-Al Alloy Flakes-Polymer Composites

K. Nomura, K. Suzuki, T. Sawada, Y. Ujihira, S. Yoshida

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The composites of Fe-Si-Al alloy flakes and dielectric polymer fabricated for a new noise suppression filter in high-frequency bands were characterized by transmission and conversion electron Mössbauer spectrometry (TMS and CEMS). The Fe-Si-Al flakes were prepared by sand milling the atomized sendust powder (9.7 wt.% Si, 5.4 wt.% Al, and balance Fe) in n-hexane for several hours and days. The deformed structures were estimated by magnetic hyperfine field (Hin) distributions, and the annealing effects were investigated. The composites of Fe-Si-Al alloy forged for less than 100 hours recovered the high permeability with production of D03 structure after annealing at 650°C for 2 hours in Ar atmosphere. However, the Fe-Si-Al alloy flakes forged for 180 hours gave the broad Hin with high magnetic fields, and were decomposed into α-Fe in the bulk and Fe species dispersed in the interface beneath the Si and Al oxides surface.

Original languageEnglish
Pages (from-to)345-350
Number of pages6
JournalHyperfine Interactions
Volume148-149
Issue number1-4
DOIs
Publication statusPublished - 2003 Dec 1
Externally publishedYes

Keywords

  • CEMS
  • Fe-Si-Al alloy
  • Mössbauer spectroscopy
  • Noise suppression filter for high-frequency devices
  • Polymer composites
  • Sendust

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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