Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Characterization of Fe-Co Nanocomposite Powders Produced by Chemical Vapor Condensation Methods

화학기상응축법으로 제조한 Fe-Co 나노복합 분말의 미세구조와 자기적 특성

  • ;
  • Z. H. Wang ;
  • ;
  • ;
  • Z. D. Zhang (Shenyang National Laboratory for materials Science, Institute of Metal Research)
  • 김병기 (한국기계연구원 재료기술연구부) ;
  • ;
  • 최철진 (한국기계연구원 재료기술연구부) ;
  • 김진천 (한국기계연구원 재료기술연구부) ;
  • Published : 2002.10.01
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Abstract

Fe-Co nanocomposite powders with different composition were prepared by chemical vapor condensation (CVC) process and their characterizations were studied by means of X-ray diffraction, transmission electron microscopy, and vibrating sample magnetometer. The particles having the mean size of 5~25 nm consisted of metallic cores and oxide shells. The Co contents and particle size increased with increasing the carrier gas flow rate of Co precursor. The saturation magnetization and coercivity increased with increasing Co content. and the saturation magnetization maximized at the 40 wt.%Co. The Fe-Co nanocomposite powder oxidized at $400^{\circ}C$ showed the maximum coercivity of 1739 Oe.

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