Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Microstructure and Properties of Nano-Sized Ni-Fe Alloy Dispersed Al2O3 Composites

Ni-Fe 합금입자 분산 Al2O3 나노복합재료의 미세조직 및 특성

  • 남궁석 (한양대학교 금속재료공학과) ;
  • 정재영 (한양대학교 금속재료공학과) ;
  • 오승탁 (한양대학교 금속재료공학과) ;
  • 이재성 (한양대학교 금속재료공학과) ;
  • 이홍재 (요업기술원 나노소재팀) ;
  • 정영근 (요업기술원 나노소재팀)
  • Published : 2002.06.01
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Abstract

Processing and properties of $Al_2O_3$ composites with Ni-Fe content of 10 and 15 wt% were investigated. Homogeneous powder mixtures of $Al_2O_3$/Ni-Fe alloy were prepared by the solution-chemistry route using $Al_2O_3$, $Ni(NO_3)_2{\cdot}6H_2O$ and $Fe(NO_3)_3{\cdot}9H_2O$ powders. Microstructural observation of composite powder revealed that Ni-Fe alloy particles with a size of 20nm were homogeneously dispersed on $Al_2O_3$ powder surfaces. Hot-pressed composites showed enhanced fracture toughness and magnetic response. The properties are discussed based on the observed microstructural characteristics.

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References

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