公开(公告)号：US20100021335A1

公开(公告)日：2010-01-28

申请号：US12573374

申请日：2009-10-05

Applicant: Futoshi KUNIYOSHI ,  Tomoiku OTANI

Inventor： Futoshi KUNIYOSHI ,  Tomoiku OTANI

IPC: B22F3/16 ,  B22F1/00 ,  B22F9/00

CPC classification number: H01F1/0577 ,  B01J2/16 ,  B22F1/0096 ,  B22F2998/00 ,  B22F2998/10 ,  H01F1/053 ,  H01F1/0571 ,  H01F41/0273 ,  C22C1/0441 ,  B22F2202/05 ,  B22F3/12

Abstract: A method of making a rare-earth alloy granulated powder according to the present invention includes the steps of: preparing a rare-earth alloy powder; generating remnant magnetization in the powder; and granulating the powder by utilizing agglomeration force produced by the remnant magnetization of the powder. Since the agglomeration force produced by the remnant magnetization is utilized, the addition of a granulating agent may be omitted.

Abstract translation: 制造本发明的稀土类合金造粒粉末的方法包括以下步骤：制备稀土合金粉末; 在粉末中产生残余磁化; 并通过利用由粉末的剩余磁化产生的附聚力来粉碎粉末。 由于利用由剩余磁化产生的附聚力，可以省略添加造粒剂。

公开(公告)号：US20090095938A1

公开(公告)日：2009-04-16

申请号：US12093936

申请日：2007-04-06

Applicant: Hiroshi Hasegawa ,  Kazuya Ueno ,  Shinichi Osawa ,  Shiro Sasaki

Inventor： Hiroshi Hasegawa ,  Kazuya Ueno ,  Shinichi Osawa ,  Shiro Sasaki

IPC: B22D45/00 ,  B22D11/12 ,  H01F1/055

CPC classification number: H01F1/0571 ,  B22F9/08 ,  B22F2998/10 ,  C22C1/04 ,  C22C1/0491 ,  C22C33/02 ,  C22C38/005 ,  C22C2202/02 ,  H01F1/401 ,  B22F9/04 ,  B22F1/0085

Abstract: The object of the present invention is to provide an apparatus for producing an alloy, including: a casting device which casts a molten alloy using the strip cast method; a crushing device which crushes the cast alloy after casting; and a heating device which keeps the thin laminas of the cast alloy after crushing at a predetermined temperature or which heats the thin laminas of the cast alloy after crushing, wherein the heating device is equipped with a container and a heater.

Abstract translation: 本发明的目的在于提供一种合金的制造装置，其特征在于，包括：铸造装置，其使用所述铸造法铸造熔融合金; 铸造后粉碎铸造合金的破碎装​​置; 以及加热装置，其在预定温度下破碎后保持铸造合金的薄层状物，或者在粉碎后加热铸造合金的薄层状物，其中，加热装置配备有容器和加热器。

公开(公告)号：US07497892B2

公开(公告)日：2009-03-03

申请号：US11238980

申请日：2005-09-30

Applicant: Yasushi Hattori

Inventor： Yasushi Hattori

IPC: B22F9/06 ,  B22F9/30 ,  H01F1/04

CPC classification number: H01F1/083 ,  G11B5/714 ,  G11B5/72 ,  G11B5/725 ,  H01F1/0571

Abstract: Magnetic particles of the present invention comprising monocrystals of rare earth element-transition metal-metalloid having particle diameters of 5 nm to 50 nm. The magnetic particles are produced by a producing method comprising a step of fabricating a quenched thin band comprising rare earth element-transition metal-metalloid. A magnetic recording medium of the present invention includes the magnetic layer which contains therein the magnetic particles and the binder, and which is formed on the non-magnetic substrate.

Abstract translation: 包含粒径为5nm〜50nm的稀土元素 - 过渡金属 - 准金属的单晶的本发明的磁性粒子。 磁性颗粒通过包括制造包含稀土元素 - 过渡金属 - 准金属的淬火的薄带的步骤的制造方法来制造。 本发明的磁记录介质包括其中包含磁性颗粒和粘合剂的磁性层，并且形成在非磁性基板上。

公开(公告)号：US20090000701A1

公开(公告)日：2009-01-01

申请号：US12201722

申请日：2008-08-29

Applicant: Hiroshi Hasegawa ,  Masahide Utsunomiya ,  Tadanao Ito

Inventor： Hiroshi Hasegawa ,  Masahide Utsunomiya ,  Tadanao Ito

IPC: C22C38/00 ,  H01F1/01

CPC classification number: B22D13/04 ,  B22D13/08 ,  B22F3/115 ,  B22F2998/00 ,  B82Y25/00 ,  C22C1/0441 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  H01F1/0571 ,  H01F1/0574 ,  H01F1/0577 ,  H01F1/0579 ,  B22F9/10

Abstract: An R-T-B exchange spring magnet alloy ingot is provided, wherein the R-T-B exchange spring magnet alloy ingot comprises at least one element selected from Nd, Pr, and Dy in a total amount of 1 to 12% by atom and B in an amount of 3 to 30% by atom, with a balance being T (T represents a substance predominantly comprising Fe, with a portion of Fe atoms being optionally substituted by Co, Ni, Cu, Al, Ga, Cr, and Mn). The R-T-B exchange spring magnet alloy ingot is produced through formation of a composite of crystal grains of a hard magnetic phase and crystal grains of a soft magnetic phase. The R-T-B exchange spring magnet alloy ingot contains crystal grains of a hard magnetic phase having a grain size of 1 μm or less and crystal grains of a soft magnetic phase having a grain size of 1 μm or less in a volume of at least 50% on the basis of the entire volume of the alloy.

Abstract translation: 提供了一种RTB交换弹簧磁体合金锭，其中RTB交换弹簧磁体合金锭包含至少一种选自Nd，Pr和Dy的元素，其总量为1至12原子％，B为3至 30原子，余量为T（T表示主要包含Fe的物质，Fe原子的一部分任选被Co，Ni，Cu，Al，Ga，Cr和Mn取代）。 通过形成硬磁相的晶粒和软磁相的晶粒的复合物来制造R-T-B交换弹簧磁体合金锭。 RTB交换弹簧磁体合金锭含有粒径为1μm以下的硬磁性相的晶粒和粒径为1μm以下的软磁性相的晶粒的体积至少为50％以上 合金的总体积的基础。

公开(公告)号：US20080257716A1

公开(公告)日：2008-10-23

申请号：US11886629

申请日：2006-03-14

Applicant: Hiroshi Nagata ,  Yoshinori Shingaki

Inventor： Hiroshi Nagata ,  Yoshinori Shingaki

IPC: C23C14/54 ,  C23C14/22 ,  H01F1/053 ,  H01F10/12 ,  H01F41/20

CPC classification number: C23C14/16 ,  C23C14/243 ,  C23C14/541 ,  H01F1/0571 ,  H01F10/126 ,  H01F41/0293 ,  H01F41/20

Abstract: A film is formed at a high rate on the surface of an iron-boron-rare-earth-metal magnet having a given shape, while effectively using dysprosium or terbium as a film-forming material. Thus, productivity is improved and a permanent magnet can be produced at low cost. A permanent magnet is produced through a film formation step in which a film of dysprosium is formed on the surface of an iron-boron-rare-earth-metal magnet of a given shape and a diffusion step in which the magnet coated is subjected to a heat treatment at a given temperature to cause the dysprosium deposited on the surface to diffuse into the grain boundary phase of the magnet. The film formation step comprises: a first step in which a treating chamber where this film formation is performed is heated to vaporize dysprosium which has been disposed in this treating chamber and thereby form a dysprosium vapor atmosphere having a given vapor pressure in the treating chamber; and a second step in which a magnet kept at a temperature lower than the internal temperature of the treating chamber is introduced into this treating chamber and the dysprosium is selectively deposited on the magnet surface based on a temperature difference between the treating chamber and the magnet until the magnet temperature reaches a given value.

Abstract translation: 在具有给定形状的铁 - 硼 - 稀土金属磁体的表面上以高比率形成膜，同时有效地使用镝或铽作为成膜材料。 因此，提高生产率，并且可以以低成本生产永磁体。 通过成膜步骤制造永磁体，其中在给定形状的铁 - 硼 - 稀土 - 金属磁体的表面上形成镝的膜，并且扩散步骤，其中涂覆的磁体经受 在给定温度下进行热处理，使沉积在表面上的镝扩散到磁体的晶界相。 成膜步骤包括：第一步骤，其中进行该成膜的处理室被加热以蒸发已经设置在该处理室中的镝，从而在处理室中形成具有给定蒸气压的镝蒸汽气氛; 并且将保持在比处理室的内部温度低的温度的磁体引入该处理室中的第二步骤，并且基于处理室和磁体之间的温度差选择性地将镝沉积在磁体表面上，直到 磁体温度达到给定值。

公开(公告)号：US20070227624A1

公开(公告)日：2007-10-04

申请号：US11238980

申请日：2005-09-30

Applicant: Yusushi Hattori

Inventor： Yusushi Hattori

IPC: H01F1/06

CPC classification number: H01F1/083 ,  G11B5/714 ,  G11B5/72 ,  G11B5/725 ,  H01F1/0571

Abstract: Magnetic particles of the present invention comprising monocrystals of rare earth element-transition metal-metalloid having particle diameters of 5 nm to 50 nm. The magnetic particles are produced by a producing method comprising a step of fabricating a quenched thin band comprising rare earth element-transition metal-metalloid. A magnetic recording medium of the present invention includes the magnetic layer which contains therein the magnetic particles and the binder, and which is formed on the non-magnetic substrate.

Abstract translation: 包含粒径为5nm〜50nm的稀土元素 - 过渡金属 - 准金属的单晶的本发明的磁性粒子。 磁性颗粒通过包括制造包含稀土元素 - 过渡金属 - 准金属的淬火的薄带的步骤的制造方法来制造。 本发明的磁记录介质包括其中包含磁性颗粒和粘合剂的磁性层，并且形成在非磁性基板上。

公开(公告)号：US07186303B2

公开(公告)日：2007-03-06

申请号：US10642276

申请日：2003-08-18

Applicant: Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

Inventor： Ryosuke Kogure ,  Hirokazu Kanekiyo ,  Takeshi Nishiuchi ,  Satoshi Hirosawa

IPC: H01F1/055

CPC classification number: H01F1/015 ,  H01F1/0571

Abstract: A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe100-a-b-cREaAbTMc where RE is at least one rare-earth element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er and Tm and including at least about 90 at % of La; A is at least one element selected from Al, Si, Ga, Ge and Sn; TM is at least one transition metal element selected from Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn; and 5 at %≦a≦10 at %, 4.7 at %≦b≦18 at % and 0 at %≦c≦9 at %; and producing a compound phase having an NaZn13-type crystal structure in at least about 70 vol % of the rapidly solidified alloy.

Abstract translation: 制造磁性合金材料的方法包括以下步骤：制备具有预定组成的合金材料的熔体; 快速冷却和固化熔体以获得由以下物质表示的快速固化的合金：Fe / SUB>其中RE是选自La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er和Tm中的至少一种稀土元素，并且包括至少约90at％的La ; A是选自Al，Si，Ga，Ge和Sn中的至少一种元素; TM是选自Sc，Ti，V，Cr，Mn，Co，Ni，Cu和Zn中的至少一种过渡金属元素; 和5原子％<= a <= 10原子％，4.7原子％<= b <= 18原子％和0原子％<= c <= 9原子％ 并在至少约70vol％的快速凝固合金中生产具有NaZn 13 N型晶体结构的化合物相。

公开(公告)号：US07138070B2

公开(公告)日：2006-11-21

申请号：US10445509

申请日：2003-05-27

Applicant: Akira Arai ,  Hiroshi Kato

Inventor： Akira Arai ,  Hiroshi Kato

IPC: H01F1/57

CPC classification number: B82Y25/00 ,  B22D11/0611 ,  B22D11/0651 ,  B22F1/0044 ,  B22F9/08 ,  B22F2009/048 ,  B22F2009/0888 ,  B22F2998/00 ,  B22F2998/10 ,  C22C1/0441 ,  H01F1/0571 ,  H01F1/0578 ,  B22F9/10 ,  B22F9/04 ,  B22F2201/10

Abstract: A magnetic material manufacturing method, a ribbon-shaped magnetic material manufactured by the method, a powdered magnetic material formed from the ribbon-shaped magnetic material and a bonded magnet manufactured using the powdered magnet material are disclosed. The method and the magnetic materials can provide magnets having excellent magnetic properties and 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 on which dimple correcting means is provided. 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 in an inert gas atmosphere (ambient gas) such as helium gas, so that the molten alloy 6 is cooled and then solidified. In this process, dimples to be produced on a roll contact surface of the melt spun ribbon are divided by the dimple correcting means, thereby preventing formation of huge dimples.

Abstract translation: 公开了一种磁性材料制造方法，通过该方法制造的带状磁性材料，由带状磁性材料形成的粉末状磁性材料和使用该粉末状磁体材料制造的粘结磁体。 该方法和磁性材料可以提供具有优异磁性和可靠性的磁体。 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和具有设置有凹坑校正装置的圆周表面53的冷却辊5。 通过从喷嘴3喷射熔融合金6以在诸如氦气的惰性气体气氛（环境气体）中与冷却辊5的周面53碰撞来形成急冷薄带8，使得熔融 将合金6冷却然后固化。 在该方法中，在急冷薄带的辊接触表面上产生的凹坑被凹坑校正装置分开，从而防止形成巨大的凹坑。

公开(公告)号：US20060169361A1

公开(公告)日：2006-08-03

申请号：US11330145

申请日：2006-01-12

Applicant: Hiroshi Hasegawa ,  Masahide Utsunomiya ,  Tadanao Ito

Inventor： Hiroshi Hasegawa ,  Masahide Utsunomiya ,  Tadanao Ito

IPC: H01F1/057

CPC classification number: B22D13/04 ,  B22D13/08 ,  B22F3/115 ,  B22F2998/00 ,  B82Y25/00 ,  C22C1/0441 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/16 ,  H01F1/0571 ,  H01F1/0574 ,  H01F1/0577 ,  H01F1/0579 ,  B22F9/10

Abstract: One object of the present invention is to provide a rare earth magnet alloy ingot, which has improved magnetic properties. In order to achieve the object, the present invention provides a rare earth magnet alloy ingot, wherein the rare earth magnet alloy ingot comprises an R-T-B type magnet alloy (R represents at least one element selected from among rare earth elements, including Y; and T represents a substance predominantly comprising Fe, with a portion of Fe atoms being optionally substituted by Co, Ni, Cu, Al, Ga, Cr, and Mn) containing at least one element selected from among Nd, Pr, and Dy in a total amount of 11.8 to 16.5% by atom and B in an amount of 5.6 to 9.1% by atom; and wherein as determined in an as-cast state of the alloy ingot, R-rich phase that measures 100 μm or more is substantially absent on a cross section.

Abstract translation: 本发明的一个目的是提供一种具有改进的磁性能的稀土磁体合金锭。 为了达到上述目的，本发明提供一种稀土类磁铁合金锭，其特征在于，所述稀土类磁铁合金锭包含RTB型磁铁合金（R表示选自稀土元素中的至少一种元素，包括Y; T 代表主要包含Fe的物质，Fe原子的一部分任选地被Co，Ni，Cu，Al，Ga，Cr和Mn所取代），其含有选自Nd，Pr和Dy中的至少一种元素，总量 为11.8〜16.5原子％，B为5.6〜9.1原子％ 并且其中如在合金锭的铸态中测定的，在横截面上基本上不存在测量为100μm或更大的富R相。

公开(公告)号：US20060076085A1

公开(公告)日：2006-04-13

申请号：US11221296

申请日：2005-09-06

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

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

IPC: H01F1/06

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