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。