Shock consolidation of Sm-Fe-N magnetic powders and magnetic properties

A. Chiba, K. Ooyabu, Y. Morizono, T. Maeda, S. Sugimoto, T. Kozuka, E. Kakimoto, K. Kawahara, T. Watanabe

研究成果: Conference article査読

6 被引用数 (Scopus)

抄録

Sm2Fe17Nx compound is a prospective candidate as a material for high performance permanent magnets because of its good intrinsic magnetic properties with a Curie temperature of 747K, a room-temperature anisotropy field of 14T and a room-temperature saturation magnetization of 1.5T. However, Sm2Fe17Nx compound decomposes to α-Fe and Sm nitride above 873K and conventional powder metallurgy processing techniques fail to meet the processing requirements. Shock consolidation is a viable alternative to process this compound. Fully dense Sm2Fe17Nx bulk materials were fabricated by cylindrical explosive consolidation technique using water as a pressure transmitting medium. Explosive consolidation is performed under cold state and fully dense materials can be obtained without any degradation of the characteristics of the powder states. Sound compacts were obtained without any cracks or teas, and the value of (BH)max of Sm2Fe 17Nx compact is 23.8 MGOe.

本文言語English
ページ(範囲)1037-1040
ページ数4
ジャーナルMaterials Science Forum
449-452
II
DOI
出版ステータスPublished - 2004
イベントDesigning, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials - Jeju Island, Korea, Republic of
継続期間: 2003 11月 52003 11月 8

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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