公开(公告)号：EP0657899A1

公开(公告)日：1995-06-14

申请号：EP94306610.0

申请日：1994-09-08

申请人： SUMITOMO SPECIAL METALS COMPANY LIMITED

发明人： Kanekiyo, Hirokazu ,  Hirosawa, Satoshi

IPC分类号： H01F1/057

CPC分类号： B82Y25/00 ,  B22F9/008 ,  H01F1/0576 ,  H01F1/0577 ,  H01F1/0578 ,  H01F1/0579

摘要： With the intention of establishing fabrication methods for cheaply produced (Fe,Co)-Cr-B-R-type bonded magnets or (Fe,Co)-Cr-B-R-M-type bonded magnets containing few rare earth elements and having a coercive force iHc above 5 kOe and a residual magnetic flux density Br above 5.5 kG matching the cost performance of hard ferrite magnets, we have obtained an iron-based permanent magnet material consisting of microcrystal clusters where the average crystal size of each component phase is in the range 1 nm ∼ 30 nm and where both a soft magnetic phase consisting of a ferromagnetic alloy whose main components are α-Fe and a ferromagnetic alloy having iron, and a hard magnetic phase having a Nd₂Fe₁₄B-type crystal structure coexist within the same powder particles. This aggregate material is obtained by melt-quenching a (Fe,Co)-Cr-B-R (R = one or both of Pr, Nd)-type molten alloy or a (Fe,Co)-Cr-B-R-M (M = Al, Si, S, Ni, Cu, Zn, Ga, Ag, Pt, Au, Pb)-type molten alloy of a particular composition containing few rare earth elements, to obtain an essentially amorphous structure or a structure both amorphous and with small amounts of fine crystals, and by applying a crystallisation heat treatment under specific conditions. By grinding this aggregate to an average powder particle size of 3 micrometres ∼ 500 micrometres and combining the resultant iron-based permanent magnet alloy powder with a resin, we can obtain an iron-based bonded magnet with good thermal and magnetic properties and with the magnetic characteristics iHc ≧ 5 kOe, Br ≧ 5.5 kG and (BH)max ≧ 6 MGOe .

摘要翻译： 为了建立廉价生产（Fe，Co）-Cr-BR型粘结磁体或含有少量稀土元素的（Fe，Co）-Cr-BRM型粘结磁体并具有高于5的矫顽力iHc的制造方法的意图 kOe和5.5kG以上的剩余磁通密度Br匹配硬铁氧体磁体的成本性能，我们获得了由微晶簇组成的铁基永磁体材料，其中各组分相的平均晶体尺寸在1nm以下类似 30nm，其中由主要成分为α-Fe的铁磁合金和具有铁的铁磁性合金构成的软磁相和具有Nd2Fe14B型晶体结构的硬磁相共存于相同的粉末颗粒内。 这种骨料通过熔融淬火（Fe，Co）-Cr-BR（R = Pr或Nd两种）熔融合金或（Fe，Co）-Cr-BRM（M = Al， Si，S，Ni，Cu，Zn，Ga，Ag，Pt，Au，Pb）型熔融合金，以获得基本上无定形的结构或非晶态和少量 细晶体，并在特定条件下进行结晶热处理。 通过将该骨料研磨至平均粉末粒径为3微米，类似于500微米，并将所得的铁基永磁体合金粉末与树脂组合，可获得具有良好热和磁性能的铁基粘结磁体，并具有磁性 特性iHc> = 5kOe，Br> / = 5.5kG和（BH）max> / = 6MGOe。

公开(公告)号：EP0540504A2

公开(公告)日：1993-05-05

申请号：EP93100980.7

申请日：1989-02-25

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Yamashita, Fumitoshi ,  Wada, Masami ,  Miyagawa, Masaharu ,  Dohi, Hiroshi, c/o Kohporasu Kunitaka

IPC分类号： H01F41/02 ,  H01F1/053 ,  H02K15/03

CPC分类号： B22F3/225 ,  B22F1/0059 ,  B22F2001/0066 ,  B22F2998/00 ,  C22C32/0094 ,  H01F1/0578 ,  H01F1/083 ,  H01F41/0266 ,  H02K15/03 ,  Y10S264/58 ,  Y10S425/033

摘要： There is provided a method for producing a resin-bonded magnet, which comprises steps of mixing a magnet element and microcapsules each of which contains at least one component of a thermally polymerizable resin composition as a binder component, mechanically breaking at least a part of the microcapsules during formation of a green compact comprising said resin composition and said magnet element to discharge the components of said resin composition from the capsules, and curing said resin to produce the resin-bonded magnet.

公开(公告)号：EP0483423A1

公开(公告)日：1992-05-06

申请号：EP90311873.5

申请日：1990-10-30

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd.

发明人： Abe, Mutsumi ,  Motoda, Takashi ,  Aota, Ken-ichi

IPC分类号： B29C67/16 ,  B22F7/06

CPC分类号： B22F7/06 ,  B29C43/146 ,  B29C70/60 ,  B29K2503/06 ,  B29K2503/08 ,  H01F1/0558 ,  H01F1/0578 ,  H02K1/02 ,  H02K1/2733 ,  H02K1/2786 ,  H02K15/03 ,  Y10T428/12049 ,  Y10T428/12569

摘要： A composite member which comprises at least two molding members (5,4) made of different compositions each comprising a metallic powder and/or a ceramic powder and a resin material is described. The at least two molding members (5,4) are fully integrated through bonding of the resin materials in the respective members. A method for fabricating the composite member is also described, in which at least one molding member is bonded with another member which is filled in molding dies (6a,6b) in the form of a powdery mixture and heated to a temperature sufficient to melt resin materials in the respective members to integrally bond the members through bonding of the resin materials.

摘要翻译： 描述了由包含金属粉末和/或陶瓷粉末和树脂材料的不同组成制成的至少两个模制构件（5,4）的复合构件。 至少两个模制构件（5,4）通过各个构件中的树脂材料的结合而完全集成。 还描述了一种用于制造复合构件的方法，其中至少一个模制构件与填充在粉末混合物形式的成型模具（6a，6b）中的另一个构件结合，并加热到足以熔化树脂的温度 各个构件中的材料通过粘合树脂材料来一体地结合构件。

公开(公告)号：EP0350967A3

公开(公告)日：1991-01-02

申请号：EP89113061.9

申请日：1989-07-17

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Yamashita, Fumitoshi ,  Wada, Masami

IPC分类号： H01F1/053 ,  H01F41/02

CPC分类号： H01F1/0578

摘要： A resin bonded magnet which comprises a resinous binder and ferromagnetic alloy particles of the formula: Fe 100-x-y-z Co x R y B z (wherein R is at least one of Nd and Pr, x is an atomic % of not less than 15 and not more than 30, y is an atomic % of not less than 10 and not more than 13 and z is an atomic % of not less than 5 and not more than 8) uni­formly dispersed therein.

公开(公告)号：EP0318252A3

公开(公告)日：1990-05-23

申请号：EP88311051.2

申请日：1988-11-23

申请人： IMPERIAL CHEMICAL INDUSTRIES PLC ,  SEIKO EPSON CORPORATION

发明人： Newton, Thomas Howard ,  Shimoda, Tatsuya

IPC分类号： H01F41/02 ,  H01F1/08

CPC分类号： H01F1/0558 ,  H01F1/0578 ,  H01F41/028 ,  Y10S264/58

摘要： Production of a bonded magnet from a composition of a cross-linkable organic material and a particulate magnetic material by
(1) placing in a mould a shaped composition in which the particles of magnetic material are optionally aligned and demagnetised, (2) rotating the mould about an axis thereof, (3) cross-linking the organic material in the shaped composition whilst rotating the mould, (4) recovering from the mould a shaped article, and (5) optionally remagnetising the particles.

公开(公告)号：EP0248981A3

公开(公告)日：1989-04-12

申请号：EP87103413.8

申请日：1987-03-10

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Tsutai, Akihiko ,  Sakai, Isao ,  Mizoguchi, Tetsuhiko ,  Inomata, Koichiro

IPC分类号： H01F1/053 ,  H01F1/08

CPC分类号： H01F1/0577 ,  H01F1/057 ,  H01F1/0578

摘要： A permanent magnet essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 13% by weight or less of gallium and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements. The magnet having this composition has a high coercive force iHC and a high residual magnetic flux density and therefore has a high maximum energy product. A permanent magnetic alloy consisting essentially of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 0.2 to 13% by weight of cobalt and the balance of iron, the content of oxygen being 0.005 to 0.03% by weight and R being at least one component selected from the group of yttrium and rare-earth elements is also disclosed.

公开(公告)号：EP0302395A1

公开(公告)日：1989-02-08

申请号：EP88112260.0

申请日：1988-07-28

申请人： TDK Corporation

发明人： Yajima, Koichi ,  Kohmoto, Osamu ,  Yoneyama, Tetsuhito

IPC分类号： H01F1/08

CPC分类号： B22F9/008 ,  H01F1/057 ,  H01F1/0571 ,  H01F1/0578

摘要： A permanent magnet having high coercivity and energy product contains rare earth elements, boron, at least one element of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta and W, and a balance of Fe or Fe and Co, and consists of a primary phase of substantially tetragonal grain structure, or a mixture of such a primary phase and an amorphous or crystalline rare earth element-poor auxiliary phase wherein the volume ratio of auxiliary phase to primary phase is smaller than a specific value.

摘要翻译： 具有高矫顽力和能量产物的永磁体包含稀土元素，硼，Ti，V，Cr，Zr，Nb，Mo，Hf，Ta和W中的至少一种元素，余量为Fe或Fe和Co，以及 由基本上为四方晶格结构的初级相，或这种初级相和无定形或结晶稀土元素不良辅助相的混合物，其中辅助相与主相的体积比小于特定值。

公开(公告)号：EP0284033A1

公开(公告)日：1988-09-28

申请号：EP88104593.4

申请日：1988-03-22

申请人： TOKIN CORPORATION

发明人： Sato, Tadakuni

IPC分类号： H01F1/08

CPC分类号： H01F1/0571 ,  B22D11/0611 ,  B22D11/0622 ,  B22F9/008 ,  B22F9/10 ,  H01F1/0577 ,  H01F1/0578

摘要： A method is disclosed for producing a rare earth metal-transition metal-boron (R-T-B) bonded magnet with a magnetic anisotropy. R-T-B alloy ribbons and/or ribbon-like flakes containing R₂T₁₄B fine crystals are prepared with a thickness of 20-1,000 µm by rapidly-quenching method. The ribbons and/or flakes are crushed and ground into a magnetic powder of particle sizes smaller than the value of the ribbon thickness. The magnetic powder is mixed with binder agent and formed into desired bulk-shape body in an aligning magnetic field to produce the bonded magnet with the magnetic anisotropy. In order to improve the magnetic properties, the ribbons and/or flakes can be heat-treated at a temperature of 650-950 °C. The magnetic powder can also be teat-treated at a temperature of 500-700 °C.

摘要翻译： 一种方法是游离缺失盘的制造粘结磁铁用磁各向异性的稀土类金属 - 过渡金属 - 硼（R-T-B）。 R-T-B合金薄带和/或含R2T14B细晶体带状薄片通过快速淬火法形成厚度为20〜1.000微米制备。 条带和/或薄片粉碎并研磨成粒子的磁性粉末尺寸大于所述带的厚度的值小。 磁性粉末与粘结剂混合，并在取向磁场，以产生具有磁各向异性粘结磁体形成为希望的堆积形本体英寸 为了提高磁特性，所述带和/或薄片可以是热处理在650-950℃的温度下的磁性粉末，因此可以在500-700℃的温度奶头处理

公开(公告)号：EP0125752A2

公开(公告)日：1984-11-21

申请号：EP84301453.1

申请日：1984-03-06

申请人： GENERAL MOTORS CORPORATION

发明人： Lee, Robert Weir ,  Croat, John Joseph

IPC分类号： H01F1/08

CPC分类号： H01F1/0578

摘要： This invention discloses permanent bonded magnets of very finely crystalline, melt-spun, rare earth-iron alloys. They are formed by compacting particles of the alloys into compacts (12), which are then fixed in shape by suitable binding agents (22), and are then magnetized. The compacts (12) are magnetically isotropic.

摘要翻译： 本发明公开了非常精细结晶，熔纺的稀土 - 铁合金的永久性粘结磁体。 它们通过将合金的颗粒压实成压坯（12）形成，然后将它们通过合适的粘合剂（22）固定成形状，然后被磁化。 压块（12）是磁各向同性的。

公开(公告)号：EP3082137A4

公开(公告)日：2017-08-02

申请号：EP14869479

申请日：2014-12-10

申请人： NTN TOYO BEARING CO LTD

发明人： MIYAZAKI SHINJI ,  HARANO TAKUJI ,  NAKAJIMA TATSUO

IPC分类号： B22F3/02 ,  B23K35/36 ,  C22C38/00 ,  G01D5/14 ,  H01F1/057 ,  H01F7/02 ,  H01F41/02

CPC分类号： H01F7/021 ,  B22F3/02 ,  B23K35/3613 ,  C22C33/02 ,  C22C38/00 ,  C22C2202/02 ,  G01D5/14 ,  G01D5/145 ,  H01F1/0576 ,  H01F1/0578 ,  H01F7/0221 ,  H01F41/026 ,  H01F41/0266

摘要： There is provided a compression-bonded magnet with a case, which can realize high magnetic properties, high corrosion resistance and high durability strength even at low cost. The compression-bonded magnet with a case is a compression-bonded magnet with a case 1, comprising: a compression-bonded magnet 2 comprising a rare earth magnet powder such as an isotropic Nd-Fe-B magnet powder and a resin binder of a thermosetting resin; a case 3 for inserting the compression-bonded magnet 2; and a sealing member 4, wherein the compression-bonded magnet 2 is formed by compression-molding a mixture comprising the rare earth magnet powder and the resin binder into a green compact and curing the resin binder contained in the green compact, the rare earth magnet powder is contained in a large amount with respect to the entire compression-bonded magnet (for example, in a volume ratio of 85% to 90%), the sealing member 4 is fixed at an insertion opening part 3a of the case 3, and the compression-bonded magnet 2 is hermetically sealed by the sealing member 4 and the case 3.

摘要翻译： 提供一种具有壳体的压克力磁体，即使在低成本下也能够实现高磁性，高耐腐蚀性和高耐久强度。 具有外壳的压粘磁体是具有外壳1的压粘磁体，包括：包含诸如各向同性Nd-Fe-B磁体粉末之类的稀土磁体粉末的压粘磁体2和 热固性树脂; 用于插入压粘磁体2的壳体3; 以及密封部件4，其中，压粉磁体2通过将包含稀土磁体粉末和树脂粘合剂的混合物压缩成型为压粉体并固化压粉体中包含的树脂粘合剂而形成，稀土磁体 相对于压电粘合磁铁整体大量地含有粉末（例如85％〜90％的体积比），密封部件4被固定在壳体3的插入口部3a上， 压电磁体2被密封部件4和壳体3气密密封。