Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Cu Content on Microstructural and Magnetic Properties of a Nd-Fe-B Strip Cast

Cu 첨가에 따른 Nd-Fe-B strip cast의 미세조직과 자기적 특성의 상관관계

  • Park, Song-E (Department of Materials Science and Engineering, Korea University) ;
  • Kim, Tae-Hoon (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Seong-Rae (Department of Materials Science and Engineering, Korea University) ;
  • Kim, Dong-Hwan (Korea Institute of Materials Science) ;
  • NamKung, Seok (Department of Hybrid Engineering, Sunmoon University) ;
  • Jang, Tae-Suk (Department of Hybrid Engineering, Sunmoon University)
  • 박송이 (고려대학교 신소재공학과) ;
  • 김태훈 (고려대학교 신소재공학과) ;
  • 이성래 (고려대학교 신소재공학과) ;
  • 김동환 (한국기계연구원 부설 재료연구소) ;
  • 남궁석 (선문대학교 하이브리드공학부) ;
  • 장태석 (선문대학교 하이브리드공학부)
  • Received : 2010.12.30
  • Accepted : 2011.01.31
  • Published : 2011.02.28
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Abstract

Effect of Cu content on microstructural and magnetic properties of a $(Nd_{26.06},Dy_{6.51})Fe_{bal.}$ $Cu_xB_{0.97}$(wt.%), (x = 0.2, 0.3, 0.4, 0.5) strip-cast was studied. The average inter-lamellar spacing in the free surface and wheel side of the strip cast increased as the Cu content increases. The grain uniformity, the grain alignment, and (00L) texture of the strip cast increased with Cu contents up to 0.4 wt.%. These microstructural changes were attributed to the decrease of the effective cooling rate of the melted alloy caused by the decrease of the melting temperature of resulting from Cu addition. Coercivity and remanence were increased because of the grain alignment and (00L) texture improvement with Cu contents up to 0.4 wt.%.

Keywords

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