Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Dynamic Compaction of Mechanochemically Alloyed Fe-Si Nano Powders by Magnetic Pulsed Pressure

기계화학적 합금화된 나노 Fe-6.5Si 분말의 자기 펄스압에 의한 동적성형

  • 이근희 (한국원자력연구소 원자력재료기술개발부) ;
  • 이창규 (한국원자력연구소 원자력재료기술개발부) ;
  • 김흥회 (한국원자력연구소 원자력재료기술개발부) ;
  • 윤종운 (국립공주대학교 신소재공학부 재료공학과) ;
  • 이기선 (국립공주대학교 신소재공학부 재료공학과)
  • Published : 2005.02.01
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Abstract

Nano Fe-6.5wt%Si powders have been synthesized by mechano-chemical process (MCP) for an application of soft magnetic core. Owing to hard and brittle characteristics of Fe-6.5Si nano powders having large surface area, it is very difficult to reach high density more than 70% of theoretical density (~7.4 g/$cm_3$) by cold compaction. To overcome such problem a magnetic pulsed compaction (MPC), which is one of dynamic compaction techniques, was applied. The green density was achieved about 78% (~5.8 g/$cm_3$) by MPC at room temperature.

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References

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