公开(公告)号：US07022252B2

公开(公告)日：2006-04-04

申请号：US10290157

申请日：2002-11-08

Applicant: Mitsuaki Mochizuki ,  Michihisa Shimizu ,  Tsunehiro Kawata ,  Masao Murakawa

Inventor： Mitsuaki Mochizuki ,  Michihisa Shimizu ,  Tsunehiro Kawata ,  Masao Murakawa

IPC: H01F1/057

CPC classification number: H01F1/059 ,  H01F1/0571 ,  H01F1/0578

Abstract: The permanent magnetic alloy of the present invention comprises an R—Fe—B alloy wherein R is at least one element selected from rare earth elements including Y. The R—Fe—B alloy has a composition mainly comprising Fe, substantially containing no N, and containing 4 at. % or more of B. The permanent magnetic alloy substantially comprises a TbCu7 hard magnetic phase (main phase) and a fine crystal having an average crystal grain size of less than 5 nm and/or an amorphous phase, and has high magnetic properties.

Abstract translation: 本发明的永磁合金包含R-Fe-B合金，其中R是选自包括Y的稀土元素中的至少一种元素.R-Fe-B合金具有主要包含Fe的组成，基本上不含N， 并包含4个。 ％以上。永久磁性合金基本上包含TbCu 7硬磁相（主相）和平均结晶粒径小于5nm的微细晶体和/或非晶相 ，具有高磁性。

公开(公告)号：US07004228B2

公开(公告)日：2006-02-28

申请号：US10381412

申请日：2001-09-25

Applicant: Ryo Murakami ,  Hirokazu Kanekiyo ,  Satoshi Hirosawa

Inventor： Ryo Murakami ,  Hirokazu Kanekiyo ,  Satoshi Hirosawa

IPC: B22D11/00 ,  H01F1/057

CPC classification number: C22C45/02 ,  B22D11/0611 ,  B82Y25/00 ,  C21D2201/03 ,  H01F1/0571 ,  H01F1/0579 ,  H01F1/058

Abstract: To make a raw alloy, consisting mostly of amorphous structure, highly productively and at a reduced cost for a nanocomposite magnet, a molten alloy represented by Fe100-x-y-zRxQyMz (where R is at least one element selected from Pr, Nd, Dy and Tb; Q is B and/or C; M is at least one element selected from Co, Al, Si, Ti, V, Cr, Mn, Ni, Cu, Ga, Zr, Nb, Mo, Ag, Pt, Au and Pb; and 1 at %≦x

公开(公告)号：US06979409B2

公开(公告)日：2005-12-27

申请号：US10359067

申请日：2003-02-06

Applicant: Zhongmin Chen ,  Benjamin R. Smith ,  Bao-Min Ma ,  James W. Herchenroeder

Inventor： Zhongmin Chen ,  Benjamin R. Smith ,  Bao-Min Ma ,  James W. Herchenroeder

IPC: H01F1/057

CPC classification number: H01F41/0266 ,  B22F9/08 ,  B22F2998/10 ,  C22C33/0257 ,  C22C45/008 ,  H01F1/0571 ,  H01F1/0578 ,  B22F9/04 ,  B22F1/0085 ,  B22F1/0059 ,  B22F3/02

Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.

Abstract translation: 本发明涉及通过快速固化方法制备的高淬硬性Fe基稀土磁性材料，具有良好的磁性和热稳定性。 更具体地说，本发明涉及通过快速固化方法制备的各向同性的Nd-Fe-B型磁性材料，其具有比用于生产常规磁性材料的最佳轮速更低的最佳轮速窗。 这些材料在室温下分别表现出7.0-8.5KG和6.5-9.9kOe之间的剩磁（B

公开(公告)号：US20050183791A1

公开(公告)日：2005-08-25

申请号：US10990333

申请日：2004-11-16

Applicant: Tetsuya Hidaka ,  Chikara Ishizaka

Inventor： Tetsuya Hidaka ,  Chikara Ishizaka

IPC: B22F3/00 ,  B22F3/16 ,  C22C1/04 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02

CPC classification number: H01F1/0571 ,  B22F2009/041 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  H01F1/0577 ,  H01F41/0273 ,  Y10T428/24917 ,  B22F3/02 ,  B22F2202/05 ,  B22F9/04 ,  B22F3/10

Abstract: The present invention provides a method for producing a sintered magnet, which can have a sufficient sintered density even when the magnet has a low-R composition. The method is for producing a sintered magnet comprising R (R: one or more rare-earth elements), T (T: one or more transition metal elements essentially comprising Fe, or Fe and Co) and B (boron) as the main components, wherein a starting alloy prepared by strip casting is pulverized to a given particle size to form a fine powder, where the starting alloy comprises discolored deposit 1 on the surface and the area ratio of the discolored deposit 1 is 1.5% or less, the resulting fine powder is compacted in a magnetic field to prepare a compact, and the compact is sintered.

Abstract translation: 本发明提供一种制造烧结磁体的方法，即使在磁体具有低R成分的情况下也能够具有足够的烧结密度。 该方法用于制造包含R（R：一种或多种稀土元素）的T（T：一种或多种过渡金属元素，主要包含Fe或Fe和Co）和B（硼）作为主要成分的烧结磁体 其中通过带状铸造制备的起始合金粉碎至给定的粒径以形成细粉末，其中起始合金包括表面上的变色沉积物1，并且变色沉积物1的面积比为1.5％或更小，所得 细粉末在磁场中压实以制备成型体，并且将该压坯烧结。

公开(公告)号：US06916385B2

公开(公告)日：2005-07-12

申请号：US09833805

申请日：2001-04-12

Applicant: Akira Arai ,  Hiroshi Kato

Inventor： Akira Arai ,  Hiroshi Kato

IPC: B22D11/06 ,  B22F1/00 ,  B22F9/04 ,  C22C33/02 ,  C22C38/00 ,  H01F1/053 ,  H01F1/055 ,  H01F1/057 ,  H01F1/06 ,  H01F1/08 ,  H01F1/153

CPC classification number: H01F1/15341 ,  B22D11/001 ,  B22D11/0611 ,  B22D11/0651 ,  B22F2009/048 ,  C22C33/02 ,  C22C2202/02 ,  H01F1/0551 ,  H01F1/0571 ,  H01F1/0578

Abstract: Disclosed herein is a method of manufacturing a magnetic material which can provide a bonded magnet having excellent magnetic properties and having excellent reliability. A melt spinning apparatus 1 is provided with a tube 2 having a nozzle 3 at the bottom thereof, a coil 4 for heating the tube and a cooling roll 5 having a circumferential surface 53 in which gas expelling grooves 54 are formed. A melt spun ribbon 8 is formed by injecting the molten alloy 6 from the nozzle 6 so as to be collided with the circumferential surface 53 of the cooling roll 5, so that the molten alloy 6 is cooled and then solidified. In this process, gas is likely to enter between a puddle 7 of the molten alloy 6 and the circumferential surface 53, but such gas is expelled by means of the gas expelling grooves 54.

Abstract translation: 本发明公开了一种磁性材料的制造方法，该磁性材料可以提供具有优异的磁性能并且具有优异的可靠性的粘结磁体。 熔融纺丝装置1在其底部设置有具有喷嘴3的管2，用于加热管的线圈4和具有形成有排气槽54的周向表面53的冷却辊5。 通过从喷嘴6喷射熔融合金6以与冷却辊5的周面53碰撞而形成急冷薄带8，使熔融合金6冷却然后固化。 在这个过程中，气体很可能进入熔融合金6的熔池7和圆周表面53之间，但这种气体是通过排气槽54排出的。

公开(公告)号：US06872326B2

公开(公告)日：2005-03-29

申请号：US10373973

申请日：2003-02-25

Applicant: Akira Arai ,  Hiroshi Kato

Inventor： Akira Arai ,  Hiroshi Kato

IPC: B22D11/06 ,  B22F1/00 ,  B22F3/00 ,  B22F9/04 ,  C22C1/02 ,  H01F1/055 ,  H01F1/057 ,  H01F1/059 ,  H01F1/06 ,  H01F1/08 ,  H01F41/02 ,  C04B35/04

CPC classification number: H01F1/0571 ,  H01F1/0551 ,  H01F1/0558 ,  H01F1/0578 ,  H01F1/059 ,  Y10S977/775 ,  Y10S977/777 ,  Y10S977/838 ,  Y10S977/896 ,  Y10S977/902 ,  Y10T428/12389 ,  Y10T428/12431 ,  Y10T428/12993

Abstract: A method of manufacturing magnetic powder is disclosed. This method can provide magnetic powder from which a bonded magnet having excellent magnetic properties and reliability can be manufactured. A melt spinning apparatus 1 is provided with a tube 2 having a nozzle 3 at the bottom thereof, a coil 4 for heating the tube and a cooling roll 5. The cooling roll 5 is constructed from a roll base 51 and a circumferential surface 53 in which gas flow passages 54 for expelling gas are formed. A melt spun ribbon 8 is formed by injecting the molten alloy 6 from the nozzle 3 so as to be collided with the circumferential surface 53 of the cooling roll 5, so that the molten alloy 6 is cooled and then solidified. In this process, gas is likely to enter between a puddle 7 of the molten alloy 6 and the circumferential surface 53, but such gas is expelled by means of the gas flow passages 54. The magnetic powder is obtained by milling thus formed melt spun ribbon 8. In this method, when the average pitch of these gas flow passages 54 is defined as Pμm and the average particle size of the magnetic powder is defined as Dμm, the relationship represented by the formula P

Abstract translation: 公开了制造磁粉的方法。 该方法可以提供可以制造具有优异的磁性和可靠性的粘结磁体的磁粉。 熔融纺丝装置1在其底部设置有具有喷嘴3的管2，用于加热管的线圈4和冷却辊5.冷却辊5由辊底51和周向表面53构成 形成用于排出气体的气体流路54。 通过从喷嘴3喷射熔融合金6以与冷却辊5的周面53碰撞而形成急冷薄带8，使熔融合金6冷却然后固化。 在这个过程中，气体很可能进入熔融合金6的熔池7和周向表面53之间，但是这种气体通过气体流动通道54被排出。磁粉通过研磨如此形成的急冷薄带 在该方法中，当这些气体流路54的平均间距为Pmum，磁粉的平均粒径为Dmum时，由公式P

公开(公告)号：US06808568B2

公开(公告)日：2004-10-26

申请号：US09804299

申请日：2001-03-13

Applicant: Shigenabu Sekine

Inventor： Shigenabu Sekine

IPC: H01F1057

CPC classification number: H01F1/047 ,  B22F1/0014 ,  B22F1/0048 ,  B22F9/008 ,  B22F9/10 ,  B22F2009/084 ,  B22F2009/0844 ,  B22F2009/086 ,  B22F2009/0876 ,  H01F1/0551 ,  H01F1/0571 ,  H01F1/0574

Abstract: Methods, apparatuses and systems for producing powder particles of extremely small, highly uniform spherical shape and high sphericity, composed of metal including single metals and alloys, including nanocomposite structures, using a self-assembling procedure. The invention further includes the produced spherical particles. The metal spherical particles are produced whereby molten metal, alloys or composites are directed onto a fast-rotating disk in an atmosphere containing one or more inert gases and small amounts of an oxidizing gas and the molten metal drops are dispersed as tiny droplets for a predetermined time using centrifugal force within a cooling-reaction gas, and then cooled rapidly to form solid spherical particles. The spherical particles comprise a crystalline, amorphous or porous composition, having a size of 1-300 &mgr;m±1% with a uniformity of size being ≦60-70% and a precise spherical shape of less than or equal to ±10%.

Abstract translation: 使用自组装方法制造由包括单一金属和合金在内的金属（包括纳米复合结构）组成的极小，高度均匀的球形和高球形度的粉末颗粒的方法，装置和系统。 本发明还包括所生产的球形颗粒。 制造金属球形颗粒，其中熔融金属，合金或复合材料在含有一种或多种惰性气体和少量氧化气体的气氛中被引导到快速旋转盘上，并且熔融金属液滴以微小液滴分散在预定的 时间在冷却反应气体内使用离心力，然后迅速冷却，形成固体球形颗粒。 球形颗粒包含晶体，无定形或多孔组合物，其尺寸为1-300mum±1％，其尺寸均匀度为<= 60-70％，精确的球形形状小于或等于±10％。

公开(公告)号：US20040154699A1

公开(公告)日：2004-08-12

申请号：US10359067

申请日：2003-02-06

Inventor： Zhongmin Chen ,  Benjamin R. Smith ,  Bao-Min Ma ,  James W. Herchenroeder

IPC: H01F001/057

CPC classification number: H01F41/0266 ,  B22F9/08 ,  B22F2998/10 ,  C22C33/0257 ,  C22C45/008 ,  H01F1/0571 ,  H01F1/0578 ,  B22F9/04 ,  B22F1/0085 ,  B22F1/0059 ,  B22F3/02

Abstract: The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic NdnullFenullB type magnetic materials made from a rapid solidification process with a lower optimal wheel speed and a broader optimal wheel speed window than those used in producing conventional magnetic materials. The materials exhibit remanence (Br) and intrinsic coercivity (Hci) values of between 7.0 to 8.5 kG and 6.5 to 9.9 kOe, respectively, at room temperature. The invention also relates to process of making the materials and to bonded magnets made from the magnetic materials, which are suitable for direct replacement of anisotropic sintered ferrites in many applications.

Abstract translation: 本发明涉及通过快速固化方法制备的高淬硬性Fe基稀土磁性材料，具有良好的磁性和热稳定性。 更具体地说，本发明涉及通过快速固化方法制备的各向同性的Nd-Fe-B型磁性材料，其具有比用于生产常规磁性材料的最佳轮速更低的最佳轮速窗。 材料在室温下分别显示7.0-8.5kG和6.5-9.9kOe的剩磁（Br）和固有矫顽力（Hci）值。 本发明还涉及制造材料和由磁性材料制成的粘结磁体的方法，其适合于在许多应用中直接替代各向异性烧结铁氧体。

公开(公告)号：US20040149354A1

公开(公告)日：2004-08-05

申请号：US10473335

申请日：2004-03-29

Inventor： Futoshi Kuniyoshi ,  Yuji Kaneko ,  Akihito Tsujimoto ,  Kazunari Shimauchi ,  Kazuo Tanaka ,  Kiyofumi Suzuki

IPC: B22F009/04

CPC classification number: B22F1/0059 ,  B22F1/0096 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  H01F1/0571 ,  H01F1/0577 ,  H01F1/0578 ,  B22F3/02 ,  B22F3/1021 ,  B22F2202/05

Abstract: The method for producing a granulated powder of the present invention includes the steps of: preparing an RnullFenullB alloy powder; and granulating the alloy powder using at least one kind of granulating agent selected from normal paraffins, isoparaffins and depolymerized oligomers, to prepare a granulated powder. The produced RnullFenullB alloy granulated powder is excellent in flowability and compactibility as well as in binder removability.

Abstract translation: 本发明的造粒粉末的制造方法包括以下步骤：制备R-Fe-B合金粉末; 并使用选自正链烷烃，异链烷烃和解聚低聚物中的至少一种造粒剂造粒合金粉末，制备造粒粉末。 生产的R-Fe-B合金造粒粉末的流动性和紧实性以及粘合剂的去除性都优异。

公开(公告)号：US20040079449A1

公开(公告)日：2004-04-29

申请号：US10470547

申请日：2003-07-30

Inventor： Hirokazu Kanekiyo ,  Hirokazu Kitayama ,  Satoshi Hirosawa ,  Toshio Miyoshi

IPC: H01F001/057

CPC classification number: B22F3/225 ,  B22F7/08 ,  B22F2998/00 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0441 ,  C22C33/0207 ,  H01F1/0571 ,  H01F1/0578 ,  H01F1/058 ,  B22F9/008 ,  B22F9/04 ,  B22F1/0003 ,  B22F3/22

Abstract: An iron-based rare-earth alloy powder includes: a first iron-based rare-earth alloy powder, which has a mean particle size of 10 nullm to 70 nullm and of which the powder particles have aspect ratios of 0.4 to 1.0; and a second iron-based rare-earth alloy powder, which has a mean particle size of 70 nullm to 300 nullm and of which the powder particles have aspect ratios of less than 0.3. The first and second iron-based rare-earth alloy powders are mixed at a volume ratio of 1:49 to 4:1. In this manner, an iron-based rare-earth alloy powder with increased flowability and a compound to make a magnet are provided.