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51. 发明授权

US4792368A Magnetic materials and permanent magnets 失效
标题翻译：磁性材料和永久磁铁
公开(公告)号：US4792368A
公开(公告)日：1988-12-20
申请号：US516841
申请日：1983-07-25
申请人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
发明人： Masato Sagawa , Setsuo Fujimura , Yutaka Matsuura
IPC分类号： C22C1/04 , H01F1/057 , H01F1/04
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0577
摘要： Magnetic materials comprising Fe, B, R (rare earth elements) and Co having a major phase of Fe-Co-B-R intermetallic compound(s) of tetragonal system, and sintered anisotropic permanent magnets consisting essentially of, by atomic percent, 8-30% R (at least one of rare earth elements inclusive of Y), 2-28% B, no less than 50% Co, and the balance being Fe with impurities. Those may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) providing Fe-Co-B-R-M type materials and magnets.
摘要翻译：包含Fe，B，R（稀土元素）和具有四方晶系的Fe-Co-BR金属间化合物的主相的Co的磁性材料和基本上由原子百分比组成的烧结各向异性永久磁体8-30 ％R（包括Y的稀土元素中的至少一种），2-28％B，不低于50％的Co，余量为Fe和杂质。这些可以含有Fe-Co-B-R-M型材料和磁铁的附加元素M（Ti，Ni，Bi，V，Nb，Ta，Cr，Mo，W，Mn，Al，Sb，Ge，Sn，Zr，Hf）。

52. 发明授权

US09884368B2 Applicator for grain boundary diffusion process 有权
公开(公告)号：US09884368B2
公开(公告)日：2018-02-06
申请号：US13643215
申请日：2011-04-26
申请人： Osamu Itatani , Masato Sagawa
发明人： Osamu Itatani , Masato Sagawa
IPC分类号： H01F1/01 , B22F3/24 , H01F41/02 , C23C10/28 , B22F7/04 , C22C33/02 , B41F15/08 , B41F15/26 , B41F15/36 , B41F15/46 , B22F3/00 , H01F1/057
CPC分类号： B22F3/24 , B22F3/008 , B22F7/04 , B41F15/0881 , B41F15/26 , B41F15/36 , B41F15/46 , C22C33/0278 , C23C10/28 , H01F1/0577 , H01F41/0293
摘要： An applicator for grain boundary diffusion process that uniformly applies an RH powder without excess or deficiency onto a predetermined surface of a sintered compact with a given thickness and in a given pattern, the applicator being automated and performed on many sintered compacts during the production of a NdFeB system sintered magnet. The applicator includes a work loader and a print head, located above the work loader. The work loader includes: a laterally movable base; a lift being vertically movable with respect to the base; a frame that is attachable to and detachable from the lift; a tray that is attachable to and detachable from the frame; a supporter provided on the upper surface of the tray; and a vertically movable magnetic clamp. The print head includes: a screen having a passage section; and a movable squeegee and a backward scraper that maintains contact with the upper screen surface.

53. 发明授权

US09558874B2 Sintered NdFeB magnet and method for manufacturing the same 有权
公开(公告)号：US09558874B2
公开(公告)日：2017-01-31
申请号：US13383034
申请日：2010-07-09
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： H01F1/057 , B22F3/10 , B22F1/00 , H01F7/02 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/16 , B22F1/02 , H01F41/02
摘要： Disclosed is a sintered NdFeB magnet having high coercivity (HcJ) a high maximum energy product ((BH)max) and a high squareness ratio (SQ) even when the sintered magnet has a thickness of 5 mm or more. The sintered NdFeB magnet is produced by diffusing Dy and/or Tb in grain boundaries in a base material of the sintered NdFeB magnet by a grain boundary diffusion process. The sintered NdFeB magnet is characterized in that the amount of rare earth in a metallic state in the base material is between 12.7 and 16.0% in atomic ratio, a rare earth-rich phase continues from the surface of the base material to a depth of 2.5 mm from the surface at the grain boundaries of the base material, and the grain boundaries in which RH has been diffused by the grain boundary diffusion process reach a depth of 2.5 mm from the surface.

54. 发明授权

US08899952B2 Sintered magnet producing apparatus 有权
标题翻译：烧结磁体制造装置
公开(公告)号：US08899952B2
公开(公告)日：2014-12-02
申请号：US13321607
申请日：2010-05-20
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： B28B1/00 , H01F41/02 , C22C26/00
CPC分类号： H01F41/0273 , B22F2999/00 , C22C2026/002 , C22C2202/02 , H01F41/028 , B22F3/003 , B22F3/10
摘要： A sintered magnet producing apparatus is provided having a device for fixing a filling container and a lid for the container in the process of orienting alloy powder in the filling container by means of a magnetic field. The sintered magnet producing apparatus includes a filling system for supplying an alloy powder into a filling container and then compacting the alloy powder, a sintering device for sintering the alloy powder, an orienting device having a coil for generating a magnetic field for orienting the alloy powder in the filling and sintering container before the filling process and after the compacting process, and a fixing device for covering the filling container with a lid, and simultaneously, fixing the filling container only during the orienting process. The filling container is prevented from moving due to the magnetic field applied in the orienting process and, simultaneously, the scattering of the alloy powder is prevented.
摘要翻译：本发明提供一种烧结磁铁制造装置，其具有在通过磁场将合金粉末定向在填充容器中的过程中用于固定填充容器和容器盖的装置。烧结磁铁制造装置包括：填充系统，用于将合金粉末供应到填充容器中，然后压实合金粉末;烧结装置，用于烧结合金粉末;定向装置，具有产生磁场的线圈，用于定向合金粉末在填充和烧结容器之前，在填充过程之前和压实过程之后，以及用于用盖子覆盖填充容器的固定装置，同时仅在定向过程中固定填充容器。由于在定向过程中施加的磁场，防止了填充容器的移动，同时防止了合金粉末的散射。

55. 发明授权

US08801870B2 Method for making NdFeB sintered magnet 有权
标题翻译：制造NdFeB烧结磁体的方法
公开(公告)号：US08801870B2
公开(公告)日：2014-08-12
申请号：US12595872
申请日：2008-04-21
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： H01F41/00 , H01F41/02
CPC分类号： H01F41/005 , B22F2003/248 , B22F2998/10 , C22C33/0278 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F1/0577 , H01F41/0293 , B22F3/02 , B22F3/10 , B22F3/20 , B22F3/24
摘要： The objective of the present invention is to provide a method for making a NdFeB sintered magnet, capable of enhancing the effect of increasing the coercive force and preventing the instability of the effects, and in addition, being inexpensive. The method for making a NdFeB sintered magnet according to the present invention has processes of coating a NdFeB sintered magnet with a powder containing Dy and/or Tb, then heating the NdFeB sintered magnet, and thereby diffusing Rh in the powder into the NdFeB sintered magnet through a grain boundary, and is characterized in that the powder contains 0.5 through 50 weight percent of Al in a metallic state; and the amount of oxygen contained in the NdFeB sintered magnet is equal to or less than 0.4 weight percent.
摘要翻译：本发明的目的是提供一种制造NdFeB烧结磁体的方法，该方法能够提高矫顽力的提高效果，防止效果不稳定，另外，成本低廉。根据本发明的制造NdFeB烧结磁体的方法具有用含有Dy和/或Tb的粉末涂覆NdFeB烧结磁体的方法，然后加热NdFeB烧结磁体，从而将粉末中的Rh扩散到NdFeB烧结磁体通过晶界，其特征在于粉末含有0.5至50重量％的金属状态的Al; 并且NdFeB烧结磁体中所含的氧的量等于或小于0.4重量％。

56. 发明授权

US08657593B2 Sintered magnet production system 有权
标题翻译：烧结磁体生产系统
公开(公告)号：US08657593B2
公开(公告)日：2014-02-25
申请号：US12810620
申请日：2008-12-22
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： B29C43/56
CPC分类号： H01F41/0273 , B22F3/003 , B22F3/004 , B22F3/087
摘要： The present invention is aimed at providing a sintered magnet production system that can prevent the influences of a leaking magnetic field in an orienting process. A sintered magnet production system according to the present invention has a filling means 11 for filling an alloy powder into a filling/sintering container, a sintering means 13 for sintering the alloy powder, and an orienting means 12 with an air-core coil for producing a magnetic field for orienting the alloy powder in the filling/sintering container after the filling process and before the sintering process, the axis of the air-core coil being displaced from a straight line connecting the filling means 11 and the sintering means 13. The magnetic field leaking from the orienting means 12 is strongest on the extended line of the axis of the air-core coil and relatively weak in the direction perpendicular to the extended line. By displacing the axis of the air-core coil from the aforementioned straight line, the magnetic field leaking from the orienting means 12 is weakened at the positions of the filling means 11 and the sintering means 13, so that a magnet with high characteristics can be obtained.
摘要翻译：本发明旨在提供一种能够防止在定向过程中泄漏磁场的影响的烧结磁体制造系统。根据本发明的烧结磁体制造系统具有用于将合金粉末填充到填充/烧结容器中的填充装置11，用于烧结合金粉末的烧结装置13以及用于生产空心线圈的定向装置12 用于在填充过程之后和烧结过程之前将合金粉末定向在填充/烧结容器中的磁场，空心线圈的轴线从连接填充装置11和烧结装置13的直线位移。从取向装置12泄漏的磁场在空心线圈的轴线的延伸线上最强，并且在垂直于延伸线的方向上相对较弱。通过从上述直线位移空心线圈的轴线，从定位装置12泄漏的磁场在填充装置11和烧结装置13的位置被削弱，使得具有高特性的磁体可以是获得。

57. 发明授权

US08562756B2 NdFeB sintered magnet and method for producing the same 有权
标题翻译： NdFeB烧结磁体及其制造方法
公开(公告)号：US08562756B2
公开(公告)日：2013-10-22
申请号：US12812379
申请日：2009-01-09
申请人： Masato Sagawa , Naoki Fujimoto
发明人： Masato Sagawa , Naoki Fujimoto
IPC分类号： H01F1/057
CPC分类号： H01F41/005 , H01F1/0557 , H01F1/057 , H01F41/0293
摘要： 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 %.
摘要翻译：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。

58. 发明申请

US20130040050A1 APPLICATOR FOR GRAIN BOUNDARY DIFFUSION PROCESS 有权
标题翻译：颗粒边界扩散过程应用者
公开(公告)号：US20130040050A1
公开(公告)日：2013-02-14
申请号：US13643215
申请日：2011-04-26
申请人： Osamu Itatani , Masato Sagawa
发明人： Osamu Itatani , Masato Sagawa
IPC分类号： B05D5/00 , B05C13/02
CPC分类号： B22F3/24 , B22F3/008 , B22F7/04 , B41F15/0881 , B41F15/26 , B41F15/36 , B41F15/46 , C22C33/0278 , C23C10/28 , H01F1/0577 , H01F41/0293
摘要： An applicator for grain boundary diffusion process that uniformly applies an RH powder without excess or deficiency onto a predetermined surface of a sintered compact with a given thickness and in a given pattern, the applicator being automated and performed on many sintered compacts during the production of a NdFeB system sintered magnet. The applicator includes a work loader and a print head, located above the work loader. The work loader includes: a laterally movable base; a lift being vertically movable with respect to the base; a frame that is attachable to and detachable from the lift; a tray that is attachable to and detachable from the frame; a supporter provided on the upper surface of the tray; and a vertically movable magnetic clamp. The print head includes: a screen having a passage section; and a movable squeegee and a backward scraper that maintains contact with the upper screen surface.
摘要翻译：一种用于晶界扩散工艺的施加器，其将没有过量或不足的RH粉末均匀地施加到具有给定厚度的烧结体的预定表面上，并且在给定图案中，施加器在制造过程中在许多烧结体上自动化并执行钕铁硼系烧结磁体。涂抹器包括位于工作装载机上方的作业装载机和打印头。工作装载机包括：横向移动基座; 升降机可相对于基座垂直移动; 一个可从电梯上拆下的框架; 托架，其可附接到所述框架并且可从所述框架拆卸; 设置在托盘的上表面上的支撑件; 和可垂直移动的磁夹。打印头包括：具有通道部分的屏幕; 以及与上面的屏幕表面保持接触的可移动的刮板和后刮刀。

59. 发明申请

US20120107433A1 SINTERED MAGNET PRODUCING APPARATUS 有权
标题翻译：烧制磁铁生产设备
公开(公告)号：US20120107433A1
公开(公告)日：2012-05-03
申请号：US13321607
申请日：2010-05-20
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： B29C67/04
CPC分类号： H01F41/0273 , B22F2999/00 , C22C2026/002 , C22C2202/02 , H01F41/028 , B22F3/003 , B22F3/10
摘要： A sintered magnet producing apparatus is provided having a device for fixing a filling container and a lid for the container in the process of orienting alloy powder in the filling container by means of a magnetic field. The sintered magnet producing apparatus includes a filling system for supplying an alloy powder into a filling container and then compacting the alloy powder, a sintering device for sintering the alloy powder, an orienting device having a coil for generating a magnetic field for orienting the alloy powder in the filling and sintering container before the filling process and after the compacting process, and a fixing device for covering the filling container with a lid, and simultaneously, fixing the filling container only during the orienting process. The filling container is prevented from moving due to the magnetic field applied in the orienting process and, simultaneously, the scattering of the alloy powder is prevented.
摘要翻译：本发明提供一种烧结磁铁制造装置，其具有在通过磁场将合金粉末定向在填充容器中的过程中用于固定填充容器和容器盖的装置。烧结磁铁制造装置包括：填充系统，用于将合金粉末供应到填充容器中，然后压实合金粉末;烧结装置，用于烧结合金粉末;定向装置，具有产生磁场的线圈，用于定向合金粉末在填充和烧结容器之前，在填充过程之前和压实过程之后，以及用于用盖子覆盖填充容器的固定装置，同时仅在定向过程中固定填充容器。由于在定向过程中施加的磁场，防止了填充容器的移动，同时防止了合金粉末的散射。

60. 发明申请

US20110250087A1 METHOD FOR PRODUCING SINTERED RARE-EARTH MAGNET AND POWDER-FILLING CONTAINER FOR PRODUCING SUCH MAGNET 审中-公开
标题翻译：用于生产烧结的稀土磁铁的方法和用于生产这种磁体的粉末填充容器
公开(公告)号：US20110250087A1
公开(公告)日：2011-10-13
申请号：US13127402
申请日：2009-10-29
申请人： Masato Sagawa
发明人： Masato Sagawa
IPC分类号： B22F5/10 , B22F3/10
CPC分类号： C22C38/005 , B22F5/10 , B22F2005/103 , B22F2998/10 , B22F2999/00 , C22C38/06 , C22C38/16 , C22C2202/02 , H01F1/0577 , H01F3/14 , H01F41/0273 , H01F41/0293 , B22F3/004 , B22F3/10 , B22F2202/05
摘要： Provided is an easy and inexpensive method for producing a sintered rare-earth magnet having cavities, such as slits, for making the magnet less likely to be influenced from eddy currents and/or performing a grain boundary diffusion process. The method for producing a sintered rare-earth magnet includes performing the following successive processes: a filling process ((a), (b)) for filling a powder of rare-earth magnet alloy into a powder-filling container together with a cavity-forming member; an aligning process (b) for aligning the rare-earth magnet alloy powder in a magnetic field; and a sintering process (e) for sintering the rare-earth magnet alloy powder by heating the rare-earth magnet alloy powder in a state of being held in the powder-filling container, wherein (d) the cavity-forming member is removed after the aligning process is completed and before the rare-earth magnet alloy powder begins to be sintered.
摘要翻译：提供了一种用于制造具有诸如狭缝的空腔的稀土类稀土磁铁的制造方法，该方法使得磁体不太可能受到涡流的影响和/或进行晶界扩散过程。烧结稀土类磁铁的制造方法包括以下连续工序：填充工序（（a），（b）），用于将稀土类磁体合金粉末与空腔型填充容器一起填充到粉末填充容器中，成型构件; 用于使稀土类磁体合金粉末在磁场中对准的取向工序（b）以及烧结方法（e），其通过在保持在粉末填充容器中的状态下加热稀土类磁铁合金粉末来烧结稀土类磁体合金粉末，其中（d）在空腔形成部件被去除之后调整过程完成，稀土磁体合金粉末开始烧结之前。

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