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公开(公告)号：US20160005525A1
公开(公告)日：2016-01-07
申请号：US14769509
申请日：2013-12-09
Inventor： Christof GULDEN , Bruce CARSTEN , Stefan HERZOG , Alexander STADLER
CPC classification number: H01F27/25 , H01F1/057 , H01F3/14 , H01F2003/103 , H01F2027/348
Abstract: An inductive component with a magnetic circuit is made of a magnetically soft core material, the circuit having at least one gap which extends in the Y direction from a first end-side free end of the core material to an opposite second end-side end of the core material, at least one coil which is wound around at least one part of the core material, and a permanent magnet unit which consists of multiple mutually spaced individual permanent magnetic elements, each of which has a magnetizing direction, the directions oriented in an at least approximately identical manner to the Y direction The individual magnets are stacked next to one another in a mutually spaced manner in a direction which is at least approximately orthogonal to the Y direction. There is high magnetic biasing of the inductor by means of the permanent magnets, little power loss, a simple production, and a high fill factor.
Abstract translation: 具有磁路的电感元件由磁软芯材料制成，该电路具有至少一个间隙，其沿Y方向从芯材的第一端侧自由端延伸到相对的第二端侧 所述芯材料，至少一个卷绕在所述芯材的至少一部分上的线圈，以及永久磁铁单元，所述永磁体单元由多个相互间隔开的各个永磁体组成，每个永磁体元件具有磁化方向， 至少大致相同于Y方向。各个磁体在至少大致正交于Y方向的方向上以相互间隔的方式相互堆叠。 通过永磁体具有高的电感偏置，功率损耗小，生产简单，填充率高等优点。
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公开(公告)号：US20150211139A1
公开(公告)日：2015-07-30
申请号：US14424707
申请日：2013-08-30
Applicant: Shin-Etsu Chemical Co., Ltd.
Inventor： Yoshifumi Nagasaki , Masanobu Shimao
CPC classification number: C25D7/001 , B22F3/24 , B22F2003/242 , B22F2003/248 , C21D1/28 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/14 , C25D13/02 , C25D13/22 , H01F1/0536 , H01F1/057 , H01F1/0577 , H01F41/0293
Abstract: A production method for a rare earth permanent magnet, wherein: a sintered magnet body comprising an R1—Fe—B composition (R1 represents one or more elements selected from among rare earth elements, including Y and Sc) is immersed in an electrodeposition liquid comprising a slurry obtained by dispersing a powder containing an R2 fluoride (R2 represents one or more elements selected from among rare earth elements, including Y and Sc) in water; an electrodeposition process is used to coat the powder onto the surface of the sintered magnet body; and, in the state in which the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to a heat treatment in a vacuum or an inert gas at a temperature equal to or less than the sintering temperature of the magnet.
Abstract translation: 一种稀土类永磁体的制造方法，其特征在于，将包含R1-Fe-B组合物（R1表示选自稀土元素，Y和Sc中的一种或多种元素）的烧结磁体浸渍在电沉积液中，所述电沉积液包含 通过将含有R 2氟化物（R2表示选自稀土元素，包括Y和Sc的一种或多种元素）的粉末分散在水中而获得的浆料; 使用电沉积工艺将粉末涂覆到烧结磁体的表面上; 并且在磁体表面存在粉末的状态下，将磁体和粉末在真空或惰性气体中以等于或小于烧结温度的温度进行热处理 磁铁。
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公开(公告)号：US20150155083A1
公开(公告)日：2015-06-04
申请号：US14378432
申请日：2013-02-13
Applicant: Masashi Miwa , Haruna Nakajima , Ken-ichi Nishikawa , Tetsuya Hidaka , Jun Hagiwara , Chikara Ishizaka
Inventor： Masashi Miwa , Haruna Nakajima , Ken-ichi Nishikawa , Tetsuya Hidaka , Jun Hagiwara , Chikara Ishizaka
CPC classification number: H01F1/057 , B22F3/10 , C22C38/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F1/0577 , H01F7/02
Abstract: The present invention provides an R-T-B based sintered magnet including R2T14B crystal grains wherein; a grain boundary is formed by two or more adjacent R2T14B crystal grains, an R—O—C concentrated part, in which concentrations of R, O and C are higher than those in the R2T14B crystal grains respectively, is in the grain boundary, and an area of the R—O—C concentrated part occupying in that of the grain boundary on a cut surface of the R-T-B based sintered magnet is within a range of 10% or more to 75% or less.
Abstract translation: 本发明提供一种包含R2T14B晶粒的R-T-B系烧结磁体，其中： 晶界由两个或更多个相邻的R2T14B晶粒形成，其中R，O和C的浓度分别高于R2T14B晶粒中的R-O-C浓缩部分在晶界中，并且 在RTB型烧结磁体的切断面上占据晶界边界的R-O-C浓缩部分的面积在10％以上至75％以下的范围。
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公开(公告)号：US09028624B2
公开(公告)日：2015-05-12
申请号：US14113961
申请日：2012-12-27
Applicant: Intermetallics Co., Ltd.
Inventor： Masato Sagawa , Tetsuhiko Mizoguchi
CPC classification number: H01F7/02 , B22F1/0011 , B22F9/023 , C22C33/02 , H01F1/0557 , H01F1/057 , H01F1/0577 , H01F41/0266 , H01F41/0293
Abstract: Provided is a NdFeB sintered magnet which can be used in the grain boundary diffusion method as a base material in which RH can be easily diffused through the rare-earth rich phase and which itself has a high coercive force, a high maximum energy product and a high squareness ratio, as well as a method for producing such a magnet. A NdFeB system sintered has an average grain size of the main-phase grains magnet is equal to or smaller than 4.5 μm, the carbon content of the entire NdFeB system sintered magnet is equal to or lower than 1000 ppm, and the percentage of the total volume of a carbon rich phase in a rare-earth rich phase at a grain-boundary triple point in the NdFeB system sintered magnet to the total volume of the rare-earth rich phase is equal to or lower than 50%.
Abstract translation: 本发明提供一种NdFeB烧结磁体，其可以用作晶界扩散法中的基底材料，其中RH容易通过富稀土相扩散，本身具有高的矫顽力，高的最大能量积和 高矩形比，以及这种磁体的制造方法。 NdFeB系烧结后的主晶粒磁铁的平均粒径为4.5μm以下，NdFeB系烧结磁铁整体的碳含量为1000ppm以下， 在NdFeB系烧结磁体中的晶界三重点处的富稀相中的富碳相的体积相对于富稀土相的总体积为50％以下。
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15.发明授权Radially anisotropic ring R-TM-B magnet, its production method, die for producing it, and rotor for brushless motor 有权径向各向异性环R-TM-B磁体，其制造方法，制造用模具，无刷电机用转子
公开(公告)号：US08937419B2
公开(公告)日：2015-01-20
申请号：US12666245
申请日：2008-06-23
Applicant: Nobuyuki Hirai , Mitsutoshi Natsumeda
Inventor： Nobuyuki Hirai , Mitsutoshi Natsumeda
CPC classification number: H01F1/057 , H01F1/0576 , H01F7/02 , H01F7/021 , H01F7/0268 , H01F41/0266 , H01F41/0273 , H01F41/028 , H02K1/2733 , H02K15/03 , H02K21/14 , Y10T29/49009 , Y10T29/49012
Abstract: A method for producing a radially anisotropic ring magnet having at least one axial groove on the inner surface comprises using a die comprising a cylindrical, magnetic core, a magnetic sleeve having an axial ridge in alignment with the groove on the outer surface and disposed on an outer peripheral surface of the core, and an outer, cylindrical die member defining a cavity for forming the ring magnet with the magnetic sleeve, and compression-molding magnet powder charged into the cavity while applying a magnetic field in a radial direction, and a radially anisotropic ring magnet substantially having a composition of R-TM-B, wherein R is at least one of rare earth elements including Y, TM is at least one of transition metals, and B is boron, having at least one axial groove on the inner surface, and magnetized such that centerlines between magnetic poles do not overlap grooves.
Abstract translation: 一种用于制造在内表面上具有至少一个轴向凹槽的径向各向异性环形磁体的方法包括使用包括圆柱形磁芯的模具，具有与外表面上的凹槽对准的轴向脊的磁性套筒， 芯部的外周表面和外圆柱形模具构件，其限定用于用磁性套筒形成环形磁体的空腔，以及在径向施加磁场的同时将电荷加入到腔中的压缩成型磁体粉末， 基本上具有R-TM-B组成的各向异性环形磁体，其中R是至少一种包括Y的稀土元素，TM是过渡金属中的至少一种，B是硼，在内部具有至少一个轴向凹槽 表面和磁化，使得磁极之间的中心线不重叠凹槽。
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公开(公告)号：US20100282371A1
公开(公告)日：2010-11-11
申请号：US12812379
申请日：2009-01-09
Applicant: Masato Sagawa , Naoki Fujimoto
Inventor： Masato Sagawa , Naoki Fujimoto
CPC classification number: H01F41/005 , H01F1/0557 , H01F1/057 , H01F41/0293
Abstract: The present invention is aimed at providing a method for producing an NdFeB sintered magnet having a higher coercivity and higher squareness of the magnetization curve than ever before. A method for producing an NdFeB sintered magnet according to the present invention includes the steps of forming a layer containing Dy and/or Tb on the surface of an NdFeB sintered magnet base material and then performing a grain boundary diffusion process for diffusing Dy and/or Tb from the aforementioned layer through the crystal grain boundaries of the magnet base material into the magnet base material by heating the magnet base material to a temperature equal to or lower than the sintering temperature thereof, and this method is characterized in that a) the content of a rare earth in a metallic state in the magnet base material is equal to or higher than 12.7 at %; b) the aforementioned layer is a powder layer formed by depositing a powder; and c) the powder layer contains Dy and/or Tb in a metallic state by an amount equal to or higher than 50 mass %.
Abstract translation: 本发明旨在提供一种制造具有比以前更高的矫顽力和较高的磁化曲线矩形度的NdFeB烧结磁体的方法。 根据本发明的NdFeB烧结磁体的制造方法包括以下步骤：在NdFeB烧结磁体基材的表面上形成含有Dy和/或Tb的层，然后进行扩散Dy和/或 Tb通过将磁体基材加热到等于或低于其烧结温度的温度，通过磁体基材的晶界进入磁体基材，该方法的特征在于a）含量 在磁体基材中处于金属状态的稀土的含量等于或高于12.7at％; b）上述层是通过沉积粉末形成的粉末层; 和c）粉末层含有金属状态的Dy和/或Tb等于或高于50质量％的量。
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17.发明申请
公开(公告)号：US20100005633A1
公开(公告)日：2010-01-14
申请号：US12168982
申请日：2008-07-08
Applicant: Julianne Nolet
Inventor： Julianne Nolet
IPC: A44B21/00
CPC classification number: H01F7/0221 , A44D2203/00 , H01F1/057 , H01F7/0215 , Y10T24/32
Abstract: Provided is a method for designing a detachable object to an item by setting design objectives including a magnetic holding force objective needed to hold the detachable object to the item. A set of magnetic pieces are selected based on the holding magnetic force objective. An outer magnetic piece is fabricated onto the detachable object and an inner magnetic piece is fabricated and positioned within the item. The selection of the magnetic set and/or the position of the outer and inner magnetic pieces are modified until the design objectives are met.
Abstract translation: 提供了一种通过设计包括将可拆卸物体保持在物品上所需的磁性保持力目标的设计目标来设计物品的可拆卸物体的方法。 基于保持磁力目标选择一组磁片。 将外部磁性件制造在可拆卸物体上，并且内部磁性件被制造并定位在该物品内。 改变磁性组的选择和/或外部和内部磁性件的位置，直到满足设计目标。
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公开(公告)号：US07423431B2
公开(公告)日：2008-09-09
申请号：US10672658
申请日：2003-09-29
Applicant: Kathleen Melanie Amm , Evangelos Trifon Laskaris , Paul Shadforth Thompson , Bulent Aksel , Bruce Campbell Amm , Michael Anthony Palmo, Jr , Johannes Martinus Van Oort , Xianrui Huang
Inventor： Kathleen Melanie Amm , Evangelos Trifon Laskaris , Paul Shadforth Thompson , Bulent Aksel , Bruce Campbell Amm , Michael Anthony Palmo, Jr , Johannes Martinus Van Oort , Xianrui Huang
CPC classification number: H01F7/128 , G01R33/383 , H01F1/057 , H01F1/147 , H01F7/0278 , H01F41/028
Abstract: A permanent magnet assembly for an imaging apparatus having a permanent magnet body having a first surface and a stepped second surface which is adapted to face an imaging volume of the imaging apparatus, wherein the stepped second surface contains at least four steps.
Abstract translation: 一种用于成像设备的永磁体组件，具有永磁体，其具有适于面对成像设备的成像体积的第一表面和阶梯状第二表面，其中所述阶梯状第二表面包含至少四个步骤。
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公开(公告)号：US07391291B2
公开(公告)日：2008-06-24
申请号：US11063008
申请日：2005-02-22
Applicant: Koji Miyata
Inventor： Koji Miyata
IPC: H01F7/02
CPC classification number: H01F41/026 , H01F1/055 , H01F1/057 , H01F7/0221 , Y10T29/49075
Abstract: It is an object of the present invention to provide a rare earth magnet that will not decompose due to hydrogen embrittlement when used in a hydrogen gas atmosphere, and furthermore, does not pose the risk of contaminating a reaction bath with the surface treated film of the magnet. The present invention provides a sealed rare earth magnet comprising: a rare earth magnet; and a case of aluminum or aluminum alloy, wherein the case covers entirety of the rare earth magnet and is sealed by HIP; and the methods for manufacturing the same.
Abstract translation: 本发明的目的是提供一种在氢气氛中使用时由于氢脆而不会分解的稀土类磁体，而且不会产生与表面处理膜的反应浴污染的风险 磁铁。 本发明提供一种密封稀土磁体，包括：稀土磁体; 以及铝或铝合金的情况，其中所述壳体覆盖所述稀土磁体的整体并且通过HIP密封; 及其制造方法。
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公开(公告)号：US20070199623A1
公开(公告)日：2007-08-30
申请号：US10593624
申请日：2005-03-23
Applicant: Shunji Suzuki , Kenichi Machida , Eiji Sakaguchi , Kazuya Nakamura
Inventor： Shunji Suzuki , Kenichi Machida , Eiji Sakaguchi , Kazuya Nakamura
CPC classification number: H01F41/22 , H01F1/057 , H01F10/126 , H01F41/0253 , H01F41/0293 , Y10T428/32 , Y10T428/325
Abstract: An R—Fe—B based thin film magnet including an R—Fe—B based alloy which contains 28 to 45 percent by mass of R element (where R represents at least one type of rare-earth lanthanide elements) and which is physically formed into a film, wherein the R—Fe—B based alloy has a composite texture composed of R2Fe14B crystals having a crystal grain diameter of 0.5 to 30 μm and R-element-rich grain boundary phases present at boundaries between the crystals. The magnetization characteristics of the thin film magnet are improved. The R—Fe—B based thin film magnet can be prepared by heating to 700° C. to 1,200° C. during physical film formation or/and the following heat treatment, so as to grow crystal grains and form R-element-rich grain boundary phases.
Abstract translation: 包含R-Fe-B系合金的R-Fe-B类薄膜磁体，其含有28〜45质量％的R元素（其中R表示至少一种稀土镧系元素），并且其物理形成 其中R-Fe-B基合金具有由晶体直径为0.5至30μm的R 2 Fe 14 N 12 B晶体组成的复合纹理，以及 存在于晶体之间的边界处的富含R元素的晶界相。 提高了薄膜磁铁的磁化特性。 R-Fe-B类薄膜磁体可以在物理成膜或/和随后的热处理中加热至700℃至1200℃，从而生长晶粒并形成富含R元素的薄膜 晶界相。
