公开(公告)号：US20070209737A1

公开(公告)日：2007-09-13

申请号：US11684889

申请日：2007-03-12

申请人： Yuichi Satsu ,  Matahiro Komuro ,  Takao Imagawa ,  Takashi Yasuhara ,  Yutaka Matsunobu

发明人： Yuichi Satsu ,  Matahiro Komuro ,  Takao Imagawa ,  Takashi Yasuhara ,  Yutaka Matsunobu

IPC分类号： H01F1/04

CPC分类号： H01F1/0578 ,  B22F1/02 ,  B22F2998/00 ,  C22C1/1036 ,  C22C38/005 ,  C22C2202/02 ,  H01F41/026 ,  H01F41/0266 ,  H01F41/0293 ,  Y10T428/25 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2998 ,  C22C33/0278

摘要： The object of the present invention is to both reduce costs and improve magnetic characteristics of rare-earth bond magnets in which magnetic material is bound with a binding agent. In order to achieve this object, magnetic characteristics of a magnet are improved by performing cold forming on rare-earth magnetic powder by itself with no resin added. Then, in order to provide strength for the magnet, a low-viscosity SiO2 precursor is infiltrated and thermoset in the magnet shaped body. As a result, it is possible to obtain a rare-earth bond magnet in which magnetic characteristics are improved and costs are reduced.

摘要翻译： 本发明的目的在于降低磁性材料与粘合剂结合的稀土类磁铁的成本和磁特性。 为了达到这个目的，通过在不添加树脂的情况下对稀土磁性粉末进行冷成型，可以提高磁体的磁特性。 然后，为了提供磁铁的强度，低粘度的SiO 2前体渗透并在磁体成形体中热固化。 结果，可以获得磁特性提高并且成本降低的稀土粘结磁体。

公开(公告)号：US20070159171A1

公开(公告)日：2007-07-12

申请号：US11641757

申请日：2006-12-20

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa ,  Katsumi Ishikawa ,  Takeyuki Itabashi

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa ,  Katsumi Ishikawa ,  Takeyuki Itabashi

IPC分类号： G01V3/00

CPC分类号： G01R33/383 ,  G01R33/3806 ,  G01R33/3873 ,  Y10T428/12014

摘要： Eddy current generated around a magnetic circuit in an MRI apparatus is one of the causes of deviation from an ideal magnetic field gradient waveform and causes image distortion, loss of strength, ghost generation, loss of signal, and spectral distortion. An object of the present invention is to suppress the generation of the eddy current. In an MRI apparatus, a ferromagnetic material formed from powder is used in a part of a magnetic circuit: the powder mainly comprising a mother phase containing iron or cobalt and showing ferromagnetism; and a high-resistance layer having a resistance not less than ten times as high as the mother phase and a Vickers hardness lower than that of the mother phase being formed in layers along parts of the surface of the powder on parts or the entire of the surface.

摘要翻译： 在MRI装置中围绕磁路产生的涡流是偏离理想磁场梯度波形的原因之一，并且导致图像失真，强度损失，重影产生，信号损失和光谱失真。 本发明的目的是抑制涡电流的产生。 在MRI装置中，在磁路的一部分中使用由粉末形成的铁磁材料，该粉末主要包含含有铁或钴的母相并显示出铁磁性; 以及耐电压不低于母相的十倍的高电阻层，维氏硬度低于母相的部分或全部沿着粉末表面的一部分形成的层， 表面。

公开(公告)号：US20070065677A1

公开(公告)日：2007-03-22

申请号：US11524289

申请日：2006-09-21

申请人： Yuichi Satsu ,  Matahiro Komuro ,  Noboru Baba ,  Yuzo Kozono ,  Kunihiro Maeda

发明人： Yuichi Satsu ,  Matahiro Komuro ,  Noboru Baba ,  Yuzo Kozono ,  Kunihiro Maeda

IPC分类号： B32B15/00 ,  H01F1/26 ,  H01F1/04 ,  H01F1/00

CPC分类号： C23C26/02 ,  C23C22/02 ,  H01F1/0552 ,  H01F1/0557 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/026 ,  H01F41/0293 ,  Y10T428/32

摘要： A magnet, wherein a surface of each of magnetic particles constituting the magnet is covered by a film with two or more types of fluoride are main components, wherein the main components of the film are fluoride including an element selected from the group consisting of Mg, La, Ce, Pr and Nd and fluoride including an element selected from the group consisting of Ca, Sr, Ba, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, or Lu.

摘要翻译： 一种磁体，其中构成磁体的每个磁性颗粒的表面被具有两种或更多种类型的氟化物的膜覆盖，其中主要成分是膜，其中主要成分是含有选自Mg， La，Ce，Pr和Nd以及包含选自Ca，Sr，Ba，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb或Lu中的元素的氟化物。

公开(公告)号：US08303732B2

公开(公告)日：2012-11-06

申请号：US12696074

申请日：2010-01-29

申请人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

发明人： Hiroyuki Suzuki ,  Takao Imagawa ,  Yuichi Satsu ,  Matahiro Komuro

IPC分类号： H01F1/057

CPC分类号： C22C1/0441 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293

摘要： A rare earth magnet having a composition represented by RTB wherein R denotes a rare earth element, T a transition metal and B boron, the magnet being composed of magnet powder constituted by crystalline particles. The particles of the magnetic powder have a ratio of a short diameter being 10 μm or more to a long diameter is 0.5 or less. An element Rm having a magnetic anisotropy higher than that of the rare earth element is contained in the surface and inside of the magnet constituted by the magnet powder in an approximately constant concentration. An oxy-fluoride and carbon are present at boundaries of the particles of the magnet powder.

摘要翻译： 具有由RTB表示的组成的稀土类磁体，其中R表示稀土元素，T是过渡金属和B硼，所述磁体由由结晶颗粒构成的磁体粉末组成。 磁粉的粒子的短径为10μm以上的长径比为0.5以下。 具有高于稀土元素的磁各向异性的元素Rm被包含在以大致恒定的浓度由磁体粉末构成的磁体的表面和内部。 氧氟化物和碳存在于磁体粉末颗粒的边界处。

公开(公告)号：US20120111232A1

公开(公告)日：2012-05-10

申请号：US13351350

申请日：2012-01-17

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Yoshii Morishita ,  Shigeaki Funyu ,  Mitsuo Katayose

IPC分类号： C09D7/12

CPC分类号： C23C22/02 ,  C23C18/00 ,  H01F1/0572 ,  H01F41/0293

摘要： A conventional method for forming an insulating film on a magnet has a difficulty in achieving sufficient improvement in magnetic characteristics due to nonuniformity of a coating film, and an extended time and higher temperature which are required in a thermal treatment. In order to solve the problems, the present invention provides a treating solution composed of an alcohol based solvent and a rare earth fluoride or alkaline earth metal fluoride dispersing in the solvent. In the treating solution, at least one X-ray diffraction peak has a half-value width larger than 1°. The present invention also provides a method for forming an insulating film using the treating solution.

摘要翻译： 在磁体上形成绝缘膜的常规方法难以实现由于涂膜的不均匀性而导致的磁特性的充分改善以及在热处理中所需的延长的时间和更高的温度。 为了解决上述问题，本发明提供了一种由醇系溶剂和分散在溶剂中的稀土氟化物或碱土金属氟化物构成的处理液。 在处理溶液中，至少一个X射线衍射峰的半值宽度大于1°。 本发明还提供了使用该处理溶液形成绝缘膜的方法。

公开(公告)号：US08119260B2

公开(公告)日：2012-02-21

申请号：US11189912

申请日：2005-07-27

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Kunihiro Maeda ,  Yuzo Kozono

IPC分类号： B32B15/04

CPC分类号： H02K1/02 ,  H01F1/0572 ,  H01F1/0577 ,  H01F41/0293 ,  Y10T428/32 ,  Y10T428/325

摘要： In a ferromagnetic material containing at least one kind of rare-earth element, a layer containing at least one kind of alkaline earth element or rare-earth element and fluorine is formed at the grain boundary or near the powder surface of the ferromagnetic material. A further layer containing at least one kind of rare-earth element, having a fluorine concentration lower than that of the layer described first and having a rare-earth element concentration higher than that of the host phase of the ferromagnetic material, or an oxide layer containing a rare-earth element is formed in adjacent with a portion of the layer described first.

摘要翻译： 在含有至少一种稀土元素的铁磁材料中，在铁磁材料的晶界或粉末表面附近形成含有至少一种碱土金属或稀土元素和氟的层。 含有至少一种稀土元素的另一层，其氟浓度低于首先介绍的层，其稀土元素浓度高于铁磁材料的主相，或氧化物层 含有稀土元素的层与第一层的一部分相邻地形成。

公开(公告)号：US20120025651A1

公开(公告)日：2012-02-02

申请号：US13257331

申请日：2010-02-18

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Hiroyuki Suzuki ,  Takao Imagawa

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Hiroyuki Suzuki ,  Takao Imagawa

IPC分类号： H01F1/04 ,  H02K21/02

CPC分类号： H01F1/0577 ,  C22C2202/02 ,  H01F1/0572 ,  H01F41/0266 ,  H01F41/0293

摘要： A sintered magnet according to the present invention is a sintered magnet configured from a magnetic powder grain having Nd2Fe14B as a main component, in which: fluorine, a heavy rare earth element, oxygen, and carbon are segregated in part of grain-boundary regions of said sintered magnetic powder grain; concentration of the carbon is higher than concentration of the fluorine at a grain-boundary triple junction of the grain-boundary region; and concentration of the heavy rare earth element decreases from said grain-boundary triple junction toward an inside of said magnetic powder grain.

摘要翻译： 根据本发明的烧结磁体是由以Nd2Fe14B为主要成分的磁性粉末颗粒构成的烧结磁体，其中，氟，重稀土元素，氧和碳在部分晶界区域分离 所述烧结磁粉颗粒; 碳的浓度高于晶界的晶界三重结的氟浓度; 并且所述重稀土元素的浓度从所述晶界三重结点向所述磁粉颗粒的内部减少。

公开(公告)号：US07972450B2

公开(公告)日：2011-07-05

申请号：US12708580

申请日：2010-02-19

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Takao Imagawa

IPC分类号： H01F1/00 ,  H02K1/27 ,  H02K1/06 ,  H02K5/10 ,  H02K21/12 ,  H02K3/48 ,  H02K1/12

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/743 ,  H01F1/0571 ,  H01F41/0293 ,  H02K1/02 ,  Y10T29/53261 ,  Y10T409/305656 ,  Y10T409/305712 ,  Y10T409/305768 ,  Y10T409/305824 ,  Y10T428/258 ,  Y10T428/26

摘要： A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %.

摘要翻译： 一种磁铁，其主要成分为铁，铁素体晶粒表面存在氟化合物层或碱金属，碱土金属，稀土元素的氟化物粒子的氧氟化合物层， 其中，所述氟化合物粒子中的铁原子量为1〜50原子％。

公开(公告)号：US07876012B2

公开(公告)日：2011-01-25

申请号：US11641759

申请日：2006-12-20

申请人： Matahiro Komuro ,  Yuichi Satsu ,  Noriaki Hino

发明人： Matahiro Komuro ,  Yuichi Satsu ,  Noriaki Hino

IPC分类号： H02K21/12 ,  H02K5/10 ,  H02K3/48 ,  H02K1/02 ,  H02K1/06 ,  H02K1/27 ,  H02K1/12

CPC分类号： H02K1/146 ,  H02K1/02 ,  H02K1/08 ,  H02K21/16

摘要： A dynamoelectric machine comprising a stator having a plurality of slots and teeth, armature windings wound around the teeth, and a rotor disposed inside the stator, wherein an alloy member is disposed in the inner periphery of the stator and the magnetic compensator has its surface or inside thereof a high resistance layer.

摘要翻译： 一种电动机，包括具有多个槽和齿的定子，缠绕在齿周围的电枢绕组和设置在定子内部的转子，其中合金构件设置在定子的内周中，并且磁补偿器具有其表面或 其内部具有高电阻层。

公开(公告)号：US07871475B2

公开(公告)日：2011-01-18

申请号：US12534530

申请日：2009-08-03

申请人： Matahiro Komuro ,  Yuichi Satsu

发明人： Matahiro Komuro ,  Yuichi Satsu

IPC分类号： H01F1/057

CPC分类号： H01F1/0572 ,  H01F41/0293 ,  Y10T428/2991

摘要： The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in which a layered grain boundary phase is formed on a surface or a potion of a grain boundary of Nd2Fe14B which is a main phase of an R—Fe—B (R is a rare-earth element) based magnet, and wherein the grain boundary phase contains a fluoride compound, and wherein a thickness of the fluoride compound is 10 μm or less, or a thickness of the fluoride compound is from 0.1 μm to 10 μm, and wherein the coverage of the fluoride compound over a main phase particle is 50% or more on average. Moreover, after layering fluoride compound powder, which is formed in plate-like shape, in the grain boundary phase, the rare earth magnet is manufactured by quenching the layered compound after melting it at a vacuum atmosphere at a predetermined temperature, or by heating and pressing the main phase and the fluoride compound to make the fluoride compound into a layered fluoride compound along the grain boundary phase.

摘要翻译： 本发明的目的是提供一种能够在高矫顽力和高残留磁通密度之间实现良好平衡的稀土类磁铁及其制造方法。 本发明提供一种在作为R-Fe-B（R为稀土类元素）的主相的Nd2Fe14B的晶界的表面或部分形成层状晶界相的稀土类磁铁， 并且其中所述晶界相包含氟化物，并且其中所述氟化物的厚度为10μm以下，或所述氟化物的厚度为0.1μm〜10μm，并且其中所述氟化物的覆盖率 主相粒子上的化合物平均为50％以上。 此外，在晶界相中形成板状的氟化物复合粉末之后，通过在预定温度下在真空气氛下或通过加热熔化之后将层状化合物淬火来制造稀土磁铁， 按下主相和氟化物，使氟化合物沿着晶界相成为层状氟化物。