Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Sintering Behavior and Phase Analysis of (Nd, Dy)-Fe-B Powder

(Nd, Dy)-Fe-B 분말의 소결특성 및 상변화 연구

  • Kim, Se-Hoon (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Jin-Woo (Department of Materials Science and Engineering, Hanyang University) ;
  • Kim, Young-Do (Department of Materials Science and Engineering, Hanyang University)
  • Published : 2010.04.28
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Abstract

In this study, the sintering behavior of (Nd, Dy)-Fe-B powder which fabricated by strip-casting was investigated with various sintering temperatures and holding times. The relative density over 99% could be obtained by both sintering at $1070^{\circ}C$ for 1h and sintering at $970^{\circ}C$ for 20h. The grain growth was observed in sintered specimen at $1050^{\circ}C$ compared to one at $970^{\circ}C$. The isothermal sintering process below $1000^{\circ}C$ led to suppress grain growth showing the improved magnetic properties. The phase transformation of Nd-rich was confirmed by X-ray diffraction pattern.

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References

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  1. Magnetic Properties and Sintering Behavior of (Nd,Dy)-Fe-B Permanent Magnet by Spark Plasma Sintering vol.19, pp.2, 2012, https://doi.org/10.4150/KPMI.2012.19.2.105
  2. Crystallographic and Mössbauer studies of sintered Nd-Fe-B magnet vol.62, pp.11, 2013, https://doi.org/10.3938/jkps.62.1641