公开(公告)号：US20140010955A1

公开(公告)日：2014-01-09

申请号：US13584304

申请日：2012-08-13

申请人： Fumitoshi YAMASHITA ,  Shiho OHYA ,  Shinsaku NISHIMURA

发明人： Fumitoshi YAMASHITA ,  Shiho OHYA ,  Shinsaku NISHIMURA

IPC分类号： H01F41/02

CPC分类号： H01F41/02 ,  C22C33/003 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C38/12 ,  C22C45/02 ,  H01F1/0579

摘要： There is provided a method of producing an α-Fe/R2TM14B-type nanocomposite magnet where R is 9 at. % or more but less than 11.76 at. % of Nd or Pr, TM is Fe or a substance in which a portion of Fe is substituted with Co of 20 at. % or less, and B is 6 to 8 at. %. A relatively long length nanocrystalline ribbon having a coercivity of 600 kA/m or more in which a content of flakes of less than 10 mm in length is 20% or less is coated with a polymeric film and then cut into an intended length, or punched into a specific shape.

摘要翻译： 提供了生产α-Fe / R2TM14B型纳米复合磁体的方法，其中R为9at。 ％以上但小于11.76。 Nd或Pr，TM的％为Fe或其中一部分Fe被Co取代为20的物质。 ％以下，B为6〜8个。 ％。 具有矫顽力为600kA / m以上的相对较长长度的纳米晶带，其中长度小于10mm的薄片的含量为20％或更小，涂覆有聚合物膜，然后切成预期长度，或冲压 变成一个特定的形状。

公开(公告)号：US20100219921A1

公开(公告)日：2010-09-02

申请号：US12706389

申请日：2010-02-16

申请人： Fumitoshi YAMASHITA ,  Osamu YAMADA ,  Shiho OHYA

发明人： Fumitoshi YAMASHITA ,  Osamu YAMADA ,  Shiho OHYA

IPC分类号： H01F7/02

CPC分类号： H01F1/0578 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/059 ,  H01F41/0273

摘要： A rare-earth iron-based magnet with self-recoverability is provided and includes a plurality of segments, wherein the segments each include a matrix having a microstructure in which rare-earth iron-based aligned magnetic powders of at least one kind are solidified by a cross-linking reaction phase and also in which the cross-liking reaction phase and a viscous deformation phase resulting from on a viscosity flow are chemically bound to each other between the magnetic powders, and wherein while the inner and outer circumferential surfaces of the segments are constrained, the fracture surfaces of the segments, and also the segments on a needed-basis, are mutually aggregated and rigidified together by taking advantage of self-recovery function based on viscous deformation caused by heat and external force and also on cross-linking reaction.

摘要翻译： 提供了具有自恢复性的稀土类铁基磁体，并且包括多个段，其中各段包括具有微结构的基体，其中至少一种类型的稀土类铁基取向磁性粉末通过 交联反应相，并且其中由粘度流动引起的交叉反应相和粘性变形相在磁粉之间彼此化学结合，并且其中在段的内周面和外周面 受限于，基于需要的段的断裂面以及基于需要的链段通过利用基于由热和外力引起的粘性变形以及交联的自恢复功能相互聚合和硬化在一起 反应。

公开(公告)号：US08329056B2

公开(公告)日：2012-12-11

申请号：US12853601

申请日：2010-08-10

申请人： Fumitoshi Yamashita ,  Osamu Yamada ,  Shiho Ohya

发明人： Fumitoshi Yamashita ,  Osamu Yamada ,  Shiho Ohya

IPC分类号： H01F1/08

CPC分类号： H01F1/0578 ,  H01F1/059 ,  H01F7/02 ,  H01F41/0266 ,  H01F41/028

摘要： Anisotropic rare earth-iron based resin bonded magnet comprises: [1] a continuous phase including: (1) a spherical Sm2Fe17N3 based magnetic material covered with epoxy oligomer where its average particle size is 1 to 10 μm, its average aspect ratio ARave is 0.8 or more, and mechanical milling is not applied after Sm—Fe alloy is nitrided; (2) a linear polymer with active hydrogen group reacting to the oligomer; and (3) additive; and [2] a discontinuous phase being an Nd2Fe14B based magnetic material coated with the epoxy oligomer where its average particle size is 50 to 150 μm, and its average aspect ratio ARave is 0.65 or more, further satisfying: [3] the air-gap ratio of a granular compound on the phases is 5% or less; and [4] a composition where crosslinking agent with 10 μm or less is adhered on the granular compound is formed at 50 MPa or less.

摘要翻译： 各向异性稀土 - 铁基树脂粘结磁铁包括：[1]连续相，包括：（1）用环氧低聚物覆盖的球形Sm2Fe17N3系磁性材料，其平均粒径为1〜10μm，平均长径比ARave为0.8 或以上，并且在Sm-Fe合金被氮化之后不施加机械研磨; （2）具有与低聚物反应的活性氢基团的直链聚合物; 和（3）添加剂; 和[2]不连续相是涂覆有环氧低聚物的Nd 2 Fe 14 B基磁性材料，其平均粒度为50〜150μm，其平均长径比Arave为0.65以上，进一步满足：[3]气隙 相上的粒状化合物的比例为5％以下; 和[4]在该粒状化合物上附着有10μm以下的交联剂的组合物形成为50MPa以下。

公开(公告)号：US20110074531A1

公开(公告)日：2011-03-31

申请号：US12853601

申请日：2010-08-10

申请人： Fumitoshi YAMASHITA ,  Osamu Yamada ,  Shiho Ohya

发明人： Fumitoshi YAMASHITA ,  Osamu Yamada ,  Shiho Ohya

IPC分类号： H01F7/02

CPC分类号： H01F1/0578 ,  H01F1/059 ,  H01F7/02 ,  H01F41/0266 ,  H01F41/028

摘要： Anisotropic rare earth-iron based resin bonded magnet comprises: [1] a continuous phase including: (1) a spherical Sm2Fe17N3 based magnetic material covered with epoxy oligomer where its average particle size is 1 to 10 μm, its average aspect ratio ARave is 0.8 or more, and mechanical milling is not applied after Sm—Fe alloy is nitrided; (2) a linear polymer with active hydrogen group reacting to the oligomer; and (3) additive; and [2] a discontinuous phase being an Nd2Fe14B based magnetic material coated with the epoxy oligomer where its average particle size is 50 to 150 μm, and its average aspect ratio ARave is 0.65 or more, further satisfying: [3] the air-gap ratio of a granular compound on the phases is 5% or less; and [4] a composition where crosslinking agent with 10 μm or less is adhered on the granular compound is formed at 50 MPa or less.

摘要翻译： 各向异性稀土 - 铁基树脂粘结磁铁包括：[1]连续相，包括：（1）用环氧低聚物覆盖的球形Sm2Fe17N3系磁性材料，其平均粒径为1〜10μm，平均长径比ARave为0.8 或以上，并且在Sm-Fe合金被氮化之后不施加机械研磨; （2）具有与低聚物反应的活性氢基团的直链聚合物; 和（3）添加剂; 和[2]不连续相是涂覆有环氧低聚物的Nd 2 Fe 14 B基磁性材料，其平均粒度为50〜150μm，其平均长径比Arave为0.65以上，进一步满足：[3]气隙 相上的粒状化合物的比例为5％以下; 和[4]在该粒状化合物上附着有10μm以下的交联剂的组合物形成为50MPa以下。