Preparation and magnetic properties of Carbon/Fe-Co alloy composite by polymerized complex method

Yukiko Uchida, Kyoko Oishi, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Takeyuki Kikuchi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We have successfully prepared Carbon/Fe-Co alloy composites starting from metal organic precursors synthesized by polymerized complex method. The carbon/Fe-Co alloy composites were obtained after the carbonization of the precursors heat-treated at ambient pressure and lower temperatures ranging from 500 to 700°C in N 2 gas flow. Crystalline sizes of both carbon matrix and Fe-Co alloy particles were determined by X-ray diffraction measurements as a function of the Co concentration and the carbonized temperature. The alloy particles were widely dispersed in the carbon matrix and the particle size carbonized at 600°C was about 20-50nm observed by scanning electron microscopy. The composite carbonized at 600°C had very small coercivity of 14 Oe and exhibited relatively large permeability spectra at frequency of GHz range.

Original languageEnglish
Pages (from-to)640-645
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume52
Issue number8
DOIs
Publication statusPublished - Aug 2005

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Magnetic properties
Carbon
Composite materials
Carbonization
Coercive force
Flow of gases
Metals
Particle size
Crystalline materials
X ray diffraction
Temperature
Scanning electron microscopy

Keywords

  • Carbon/alloy composite
  • Fe-Co alloy
  • Permeability
  • Permittivity
  • Polymerized complex method

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

Preparation and magnetic properties of Carbon/Fe-Co alloy composite by polymerized complex method. / Uchida, Yukiko; Oishi, Kyoko; Nakanishi, Makoto; Fujii, Tatsuo; Takada, Jun; Kusano, Yoshihiro; Kikuchi, Takeyuki.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 52, No. 8, 08.2005, p. 640-645.

Research output: Contribution to journalArticle

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AU - Kusano, Yoshihiro

AU - Kikuchi, Takeyuki

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AB - We have successfully prepared Carbon/Fe-Co alloy composites starting from metal organic precursors synthesized by polymerized complex method. The carbon/Fe-Co alloy composites were obtained after the carbonization of the precursors heat-treated at ambient pressure and lower temperatures ranging from 500 to 700°C in N 2 gas flow. Crystalline sizes of both carbon matrix and Fe-Co alloy particles were determined by X-ray diffraction measurements as a function of the Co concentration and the carbonized temperature. The alloy particles were widely dispersed in the carbon matrix and the particle size carbonized at 600°C was about 20-50nm observed by scanning electron microscopy. The composite carbonized at 600°C had very small coercivity of 14 Oe and exhibited relatively large permeability spectra at frequency of GHz range.

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