Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Microstructure and Mechanical Properties of Al2O3/Fe-Ni Nanocomposite Prepared by Rapid Sintering

급속소결에 의해 제조된 Al2O3/Fe-Ni 나노복합재료의 미세조직 및 기계적 특성

  • Lee, Young-In (Department of Fine Chemical Engineering, Hanyang University) ;
  • Lee, Kun-Jae (Department of Fine Chemical Engineering, Hanyang University) ;
  • Jang, Dae-Hwan (Department of Fine Chemical Engineering, Hanyang University) ;
  • Yang, Jae-Kyo (Gangwon Industrial Technology Research Center, Research Institute of Industrial Science & Technology) ;
  • Cho, Yong-Ho (Department of Fine Chemical Engineering, Hanyang University)
  • 이영인 (한양대학교 정밀화학공학과) ;
  • 이근재 (한양대학교 정밀화학공학과) ;
  • 장대환 (한양대학교 정밀화학공학과) ;
  • 양재교 (포항산업과학연구원 강원산업기술연구소) ;
  • 좌용호 (한양대학교 정밀화학공학과)
  • Received : 2010.04.02
  • Accepted : 2010.05.10
  • Published : 2010.06.28
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Abstract

A new High Frequency Induction Heating (HFIH) process has been developed to fabricate dense $Al_2O_3$ reinforced with Fe-Ni magnetic metal dispersion particles. The process is based on the reduction of metal oxide particles immediately prior to sintering. The synthesized $Al_2O_3$/Fe-Ni nanocomposite powders were formed directly from the selective reduction of metal oxide powders, such as NiO and $Fe_2O_3$. Dense $Al_2O_3$/Fe-Ni nanocomposite was fabricated using the HFIH method with an extremely high heating rate of $2000^{\circ}C/min$. Phase identification and microstructure of nanocomposite powders and sintered specimens were determined by X-ray diffraction and SEM and TEM, respectively. Vickers hardness experiment were performed to investigate the mechanical properties of the $Al_2O_3$/Fe-Ni nanocomposite.

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References

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