Development of Dy-less High Coercivity Magnets Using TransitionFrom Amorphous Phase to Crystalline One
Project/Area Number |
22360128
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Electronic materials/Electric materials
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Research Institution | Nagasaki University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
NAKANO Masaki 長崎大学, 工学研究科, 准教授 (20274623)
YANAI Takeshi 長崎大学, 工学研究科, 助教 (30404239)
|
Project Period (FY) |
2010 – 2012
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Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2011: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2010: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
|
Keywords | 磁性材料 / 保磁力 / Nd-Fe-B / 結晶化 / 粒界拡散 / マイクロクロマグネティクス / 表面拡散 / マイクロマグネティクス |
Research Abstract |
Computer simulation about relationship between coercivity of Nd-Fe-B magnet powders and recovery of magnetic anisotropy due to Dy diffusion clarified that the Dy diffusion from coating layers on powder surface is effective in improving the coercivity of isotropic Nd-Fe-B magnet powders with fine grains. The diffusion from a Dy-coating layers into grain boundaries was realized by using the transition from amorphous state to crystalline one at a low temperature and for short time. The coercivity of isotropic Nd-Fe-B magnet powders was improved by approximately 500 kA/m without remarkable reduction of remanence.
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Report
(4 results)
Research Products
(56 results)
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[Presentation]2010
Author(s)
福永博俊,杉元祐一,中野正基,柳井武志,福永博俊,杉元祐一,中野正基,柳井武志
Organizer
電気学会マグネティックス研究会
Place of Presentation
東京
Related Report
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