JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleUndercooling solidification behavior and magnetic properties of Nd-Fe system high coercive force metastable phase by using gas jet flow type electromagnetic levitation process
Author(jpn)宇都野 正史; 小田 克郎; 永山 勝久
Author(eng)Utsuno, Seishi; Oda, Katsuro; Nagayama, Katsuhisa
Author Affiliation(jpn)芝浦工業大学 大学院工学研究科; 東京大学生産技術研究所; 芝浦工業大学 工学部
Author Affiliation(eng)Shibaura Institute of Technology Graduate School of Engineering; Institute of Industrial Science, University of Tokyo; Shibaura Institute of Technology Faculty of Engineering
Issue Date2005-03
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title宇宙利用シンポジウム 第21回 平成16年度
Space Utilization Research: Proceedings of the Twenty-first Space Utilization Symposium
Start page5
End page8
Publication date2005-03
AbstractHigh coercive force metastable phase was obtained in a various Nd-Fe binary and Nd70Fe20Al10 ternary samples by using Ar or He gas jet flow type the new electromagnetic levitation process. The high undercooling degree of Nd-Fe binary alloys was shown around Nd50Fe50 composition. On the contrary, the matastable phase formation was increased with increasing Nd concentration. Microstructure of Nd70Fe20Al10 sample was changed remarkably increasing the cooling velocity. But magnetization and coercive force were not change in these samples. High coercive force mechanism in matastable phase was suggested ferromagnetic structure of Fe 3d electron effect on Nd 4f nucleus by XPS (X-ray Photoelectron Spectroscopy) measurements.
Keywordsferromagnetic material; neodymium alloy; gas jet levitation process; Nd-Fe alloy; coercivity; supercooling; containerless melt; low gravity manufacturing; magnetic property; magnetic anisotropy; electromagnetic levitation; 強磁性材料; ネオジミウム合金; ガスジェット浮揚プロセス; Nd-Fe合金; 飽和保持力; 過冷却; 無容器溶融; 低重力製造; 磁気特性; 磁気異方性; 電磁浮遊
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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