Development of Dy-less High Coercivity Magnets Using TransitionFrom Amorphous Phase to Crystalline One
Development of Dy-less High Coercivity Magnets Using TransitionFrom Amorphous Phase to Crystalline One
批准号:
22360128
负责人:
FUKUNAGA Hirotoshi
金额:
$12.06万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2010
资助国家:
日本
项目状态:
已结题
起止时间:
2010 至 2012
中文摘要
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英文摘要
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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Micromagnetic Simulation of Enhancement of Coercivity in Nd-Fe-B/(Nd,Dy)-Fe-B Composite Magnets
Nd-Fe-B/(Nd,Dy)-Fe-B复合磁体矫顽力增强的微磁模拟
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[K. Kawasaki, T. Yanai, M. Nakano and H. Fukunaga]
通讯作者:
M. Nakano and H. Fukunaga
DOI:
10.1063/1.3549604
发表时间:
2011-04
期刊:
Journal of Applied Physics
影响因子:
3.2
作者:
[H. Fukunaga;Y. Sugimoto;M. Nakano;T. Yanai;S. Ohta;M. Itakura;M. Nishida]
通讯作者:
H. Fukunaga;Y. Sugimoto;M. Nakano;T. Yanai;S. Ohta;M. Itakura;M. Nishida
Numerical Study of Enhanced Coercivity of Nd-Fe-B Magnets with Antiferromagnetically Coupled Thin Surface Layers
具有反铁磁耦合薄表面层的 Nd-Fe-B 磁体增强矫顽力的数值研究
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
[Y. Yokoi, M. Nakano, T. Yanai and H. Fukunaga]
通讯作者:
T. Yanai and H. Fukunaga
Computer Simulation of the Magnetization Reversal Process in Nd-Fe-B Magnets Controlled by Magnetostatic Interaction
静磁相互作用控制 Nd-Fe-B 磁体磁化反转过程的计算机模拟
DOI:
--
发表时间:
2010
期刊:
Proc. 21st Int. Workshop Rare-Earth Permanent Magnets and Their Applications
影响因子:
--
作者:
[Hirotoshi FUKUNAGA, Kazuo KIRINO, Kohei KAWASAKI, Takeshi YANAI, Masaki NAKANO]
通讯作者:
Masaki NAKANO
硬磁性結晶表面に存在する反強磁性結合薄層の保磁力に及ぼす影響-計算機解析-
薄反铁磁耦合层对硬磁晶体表面矫顽力的影响 - 计算机分析 -
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[Akihiro Hino, and Keiji Wada, 福永博俊・横井佑司・中野正基・柳井武志]
通讯作者:
福永博俊・横井佑司・中野正基・柳井武志
共 29 条
Development of Fe-Ni magnets using crystallization from amorphous state and technology for synthesis of artificial super-multi-layered structure
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Development of Dy-free Magnets Applicable at High Temperatures by Nano-Manipulation
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Development of "ExchangeCoupled Magnet" based on a new principle- Towards rare-earth free magnet -
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Creation of Highly Functional Exchange-Spring RE-TM Films by Panoscopic Assembling
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批准号:20900134
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资助金额:$0.0万
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财政年份:2008
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负责人:FUKUNAGA Hirotoshi
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依托单位:
Development of Prediction Method of Thermal Flux Loss in Permanent Magnet Used in Electrical and Electronic Devices
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批准号:19360131
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$10.57万
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财政年份:2007
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负责人:FUKUNAGA Hirotoshi
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依托单位:
Development and Applications of Nanostructured Soft Magnetic Cores with Extremely Low Loss and Controlled Permeability
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批准号:15360170
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资助金额:$9.73万
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财政年份:2003
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Development of magnetic cores with extremely loss and controllable permeability using creep-induced ansisotropy
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批准号:12650319
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.86万
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财政年份:2000
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负责人:FUKUNAGA Hirotoshi
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依托单位:
Development of high performance metallic magnetic core using new magnetic phenomenon
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批准号:10650312
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.66万
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财政年份:1998
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负责人:FUKUNAGA Hirotoshi
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依托单位:
Development of high performance Fe-based magnets utilizing computer analysis and crystallization from amorphous state
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批准号:08650384
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项目类别:Grant-in-Aid for Scientific Research (C)
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资助金额:$1.6万
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财政年份:1996
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负责人:FUKUNAGA Hirotoshi
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依托单位:
Development of A New Method of Preparing R-Fe-N Based Magnets
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批准号:05650308
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项目类别:Grant-in-Aid for General Scientific Research (C)
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资助金额:$1.09万
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财政年份:1993
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负责人:FUKUNAGA Hirotoshi
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依托单位:
海外基金