Radially-Anisotropic Rare-Earth Bonded-Magnets Prepared by Molecular Chain Alignment of Self-Organized Binder
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- Yamashita Fumitoshi
- Motor R&D Labs., Matsushita Electric Industrial Co., Ltd.
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- Tsutsumi Shinichi
- Motor R&D Labs., Matsushita Electric Industrial Co., Ltd.
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- Toyoda Hidetsugu
- Motor R&D Labs., Matsushita Electric Industrial Co., Ltd.
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- Fukunaga Hirotoshi
- Faculty of Engineering, Nagasaki University
Bibliographic Information
- Other Title
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- 分子鎖配向を利用したラジアル異方性希土類ボンド磁石
- ブンシサハイコウ オ リヨウ シタ ラジアル イホウセイキドルイ ボンド ジシャク
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Description
Magnetic properties of radially-anisotropic ring-shaped magnets were deteriorated when their outer-diameter is decreased down. Therefore, anisotropic Nd2Fe14B bonded-magnets have not been mainly applied to small motors up to now. In order to overcome the above difficulty, we developed a new technique using self-organization of binder which enabled the alignment of molecular-chain. By using this technique, we controlled the flexibility of Nd2Fe14B /Sm2Fe17N3 rigid sheet-magnets (approximately 1 mm in thickness), transformed them into various shapes, and succeeded in preparing radially-anisotropic ring- or arc-shaped magnets. Optimizations of the solidification process of the binder under a transverse alignment-field and the transformation process into various specific shapes realized radially-anisotropic magnets with superior properties such as values of (BH)max and also magnetic stabilities. Their value of (BH)max exceeded 160 kJ/m3, even if their outer diameter is less than 25 mm.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 124 (10), 857-862, 2004
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204595041152
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- NII Article ID
- 10013639972
- 30011541154
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 7104886
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed