Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Fabrication of Deep-Sub-Millimeter-Thick Compacts Using Spark Plasma Sintering

  • Ohashi, T. (Graduate School of Science and Engineering, Yamaguchi University) ;
  • Tanaka, T. (Faculty of Engineering, Yamaguchi University) ;
  • Oshiro, K. (Graduate School of Science and Engineering, Yamaguchi University) ;
  • Fujimori, H. (Graduate School of Science and Engineering, Yamaguchi University) ;
  • Kurisu, H. (Faculty of Engineering, Yamaguchi University) ;
  • Matsuura, M. (Faculty of Engineering, Yamaguchi University) ;
  • Yamamoto, S. (Graduate School of Science and Engineering, Yamaguchi University)
  • Published : 2006.09.24
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Abstract

Nd-Fe-B type powder was sintered using spark plasma sintering method. Fabricated compact sintered at the temperature of $700\;^{\circ}C$, is found to be a composite magnet with Nd-Fe-Co-B and ${\alpha}-Fe$. The compact sintered at $700\;^{\circ}C$ shows slightly low coercivity and large remanent magnetization comparing to the compact sintered at $600^{\circ}C$ due to the formation of ${\alpha}-Fe$ phase, resulting in the large maximum energy product. Maximum energy product tends to decrease with decreasing thickness of sintered compacts below 0.5 mm in thickness.

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