Development of new rare-earth permanent magnets by panoscopic assembling

• Project/Area Number: 20900139
• Allocation Type: Single-year Grants
• Research Institution: Chiba Institute of Technology
• Principal Investigator: SAITO Tetsuji 千葉工業大学, 工学部, 教授 (10296311)
• Project Period (FY): 2008
• Project Status: Completed (Fiscal Year 2008)
• Keywords: 希土類磁石 / 高保磁力 / 急冷凝固法 / 粉末冶金 / 磁性 / 希土類 / 構造制御

Outline of Final Research Achievements

新しい希土類永久磁石材料の開発として希土類金属(R)と3d遷移金属のFeとの金属間化合物であるR_5Fe_<17>相の磁気特性について検討していたところ、Sm_5Fe_<17>相が非常に高い保磁力を示すことがわかった。また、Nd-Fe-B系焼結磁石に代わる新しい希土類金属間化合物として知られているSm-Fe-N磁石粉末は高温で分解するためバルク化できなかったが、放電プラズマ焼結法で固化成形できることがわかった。

Research Products

• [Journal Article] Synthesis and magnetic properties of Sm3(Fe,Ti)_<29> compound (2008)
  • Author(s): Tetsuji Saito, Yasushi Kamagata
  • Journal Title: Journal of Alloys and Compounds 454 Pages: 210-213
  • Peer Reviewed
• [Journal Article] Consolidation of Sm5_Fe_<17> powder by spark plasma sintering method (2008)
  • Author(s): Tetsuji Saito
  • Journal Title: Materials Science and Engineering B 150 Pages: 38-42
  • Peer Reviewed
• [Journal Article] Magnetic properties of Sm_5(Fe, Co)_<17> melt-spun ribbons (2008)
  • Author(s): Tetsuji Saito
  • Journal Title: Journal of Applied Physics 103
  • Peer Reviewed
• [Journal Article] Annealing of amorphous Sm_5Fe_<17> melt-spun ribbon (2008)
  • Author(s): Tetsuji Saito
  • Journal Title: Materials Transactions 49 Pages: 1446-1450
  • NAID: 10021147849
  • Peer Reviewed
• [Journal Article] Magnetic properties of anisotropic Sm-Fe-N bulk magnets produced by spark plasma sintering method (2008)
  • Author(s): Tetsuji Saito
  • Journal Title: Journal of Magnetism and Magnetic Materials 320 Pages: 1893-1897
  • Peer Reviewed
• [Journal Article] SrFe系合金のハード磁気特性 (2008)
  • Author(s): 齋藤哲治
  • Journal Title: 希土類 52 Pages: 12-13