한국분말재료학회지 (Journal of Powder Materials)

  • 제20권1호
  • /
  • Pages.13-18
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  • 2013
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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환원-확산법에 의해 제조된 Sm-Fe 합금분말의 질화거동 및 자기특성에 미치는 Mn첨가 효과

The Effect of Mn Addition on Nitrogenation Behavior and Magnetic Properties of Sm-Fe Alloy Powder Produced by Reduction-diffusion Method

  • 서영택 (한국기계연구원 부설 재료연구소 분말/세라믹연구본부) ;
  • 백연경 (한국기계연구원 부설 재료연구소 분말/세라믹연구본부) ;
  • 이정구 (한국기계연구원 부설 재료연구소 분말/세라믹연구본부) ;
  • 최철진 (한국기계연구원 부설 재료연구소 분말/세라믹연구본부)
  • Seo, Young-Taek (Powder/Ceramics Division, Korea Institute of Materials Science) ;
  • Baek, Youn-Kyoung (Powder/Ceramics Division, Korea Institute of Materials Science) ;
  • Lee, Jung-Goo (Powder/Ceramics Division, Korea Institute of Materials Science) ;
  • Choi, Chul-Jin (Powder/Ceramics Division, Korea Institute of Materials Science)
  • 투고 : 2013.01.11
  • 심사 : 2013.02.21
  • 발행 : 2013.02.28
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초록

In the present study, we systematically investigated the effect of Mn addition on nitrogenation behavior and magnetic properties of Sm-Fe powders produced by reduction-diffusion process. Alloy powders with only $Sm_2(Fe,Mn)_{17}$ single phase were successfully produced by the reduction-diffusion process. The coercivity of $Sm_2(Fe,Mn)_{17}$ powder rapidly increased during nitrogenation and reached the maximum of 637 Oe after 16 hours. After further nitrogenation, it decreased. In contrast, the coercivity of $Sm_2Fe_{17}$ powder gradually increased during nitrogenation for 24 hours. The coercivity of $Sm_2(Fe,Mn)_{17}$ powder was higher than that of $Sm_2Fe_{17}$ powder at the same condition of nitrogenation. It was considered that the Mn addition facilitates the nitrogenation of $Sm_2Fe_{17}$ powder and enhances the coercivity.

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