Flow of Magnetic Powder in Stepped Cavity Shape under Applied Magnetic Field
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- Tsumori Fujio
- Dept. Mech. Eng., Fac. Eng., Kyoto University
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- Kurihara Fumikazu
- Matsushita Electric Works, Ltd.
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- Kotera Hidetoshi
- Dept. Mech. Eng., Fac. Eng., Kyoto University
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- Shima Susumu
- Dept. Mech. Eng., Fac. Eng., Kyoto University
Bibliographic Information
- Other Title
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- 磁場中粉体成形における粉末流動のキャビティ形状による影響
- ジバ チュウ フンタイ セイケイ ニ オケル フンマツ リュウドウ ノ キャビティ ケイジョウ ニ ヨル エイキョウ
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Abstract
Nd-Fe-B magnet, which possesses the highest magnetic performance, is fabricated by powder metallurgy process. The magnetic powder is compacted under an applied magnetic field for the particles' easy directions of magnetization to be oriented along the magnetic flux. It is widely known that the magnetic powder flows and moves during this process both by the applied magnetic field and by the applied pressure. Since this process determines the final properties of the magnet, it is of great importance to clarify the behavior of the powder during the process.<br>In the present study, we focus on the flow behavior of Nd-Fe-B powder due to an applied magnetic field. An attempt is made to make clear the powder flow by in-situ observation with a transparent die set. An FEM-DEM simulation is also performed to investigate the flow of magnetic flux that affects the movement of the powder. It is thereby shown that simulated results of the flow of magnetic powder and change of the structure built-up by particles are in good agreement with experimentally derived ones.
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 52 (6), 458-463, 2005
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206307434240
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- NII Article ID
- 130000055878
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 7406459
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed