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1. 发明申请

US20050016632A1 Rare earth element-iron-boron alloy and megnetically anisotropic permanent magnet powder and method for production thereof 有权
标题翻译：稀土元素 - 铁 - 硼合金和兆欧各向异性永磁体粉末及其制造方法
公开(公告)号：US20050016632A1
公开(公告)日：2005-01-27
申请号：US10496504
申请日：2002-12-18
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： C22C1/04 , C22C38/00 , C22C38/10 , C22C38/14 , H01F1/057
CPC分类号： C22F1/16 , B22F2998/00 , C22C1/0441 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/14 , H01F1/0573 , H01F1/0578 , H01F41/0266 , Y10T428/12472 , B22F9/023
摘要： A method of making a magnetically anisotropic magnet powder according to the present invention includes the steps of preparing a master alloy by cooling a rare-earth-iron-boron based molten alloy and subjecting the master alloy to an HDDR process. The step of preparing the master alloy includes the step of forming a solidified alloy layer, including a plurality of R2Fe14B-type crystals (where R is at least one element selected from the group consisting of the rare-earth elements and yttrium) in which rare-earth-rich phases are dispersed, by cooling the molten alloy through contact with a cooling member.
摘要翻译：根据本发明的制备磁各向异性磁体粉末的方法包括通过冷却稀土 - 铁 - 硼基熔融合金并使母合金进行HDDR工艺来制备母合金的步骤。制备母合金的步骤包括形成固化的合金层的步骤，其包括多个R2Fe14B型晶体（其中R是选自稀土元素和钇中的至少一种元素），其中稀有金属通过与冷却部件的接触来冷却熔融合金，分散富含相的相。

2. 发明授权

US07892365B2 Rare earth element-iron-boron alloy, and magnetically anisotropic permanent magnet powder and method for production thereof 有权
标题翻译：稀土元素 - 铁 - 硼合金和磁各向异性永磁体粉末及其制造方法
公开(公告)号：US07892365B2
公开(公告)日：2011-02-22
申请号：US11950801
申请日：2007-12-05
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/057
CPC分类号： C22F1/16 , B22F2998/00 , C22C1/0441 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/14 , H01F1/0573 , H01F1/0578 , H01F41/0266 , Y10T428/12472 , B22F9/023
摘要： A method of making a magnetically anisotropic magnet powder according to the present invention includes the steps of preparing a master alloy by cooling a rare-earth-iron-boron based molten alloy and subjecting the master alloy to an HDDR process. The step of preparing the master alloy includes the step of forming a solidified alloy layer, including a plurality of R2Fe14B-type crystals (where R is at least one element selected from the group consisting of the rare-earth elements and yttrium) in which rare-earth-rich phases are dispersed, by cooling the molten alloy through contact with a cooling member.
摘要翻译：根据本发明的制备磁各向异性磁体粉末的方法包括通过冷却稀土 - 铁 - 硼基熔融合金并使母合金进行HDDR工艺来制备母合金的步骤。制备母合金的步骤包括形成固化的合金层的步骤，其包括多个R2Fe14B型晶体（其中R是选自稀土元素和钇中的至少一种元素），其中稀有金属通过与冷却部件的接触来冷却熔融合金，分散富含相的相。

3. 发明授权

US07316752B2 R-T-B-C based rare-earth magnetic powder and bonded magnet 有权
标题翻译： R-T-B-C系稀土磁粉和粘结磁铁
公开(公告)号：US07316752B2
公开(公告)日：2008-01-08
申请号：US10481015
申请日：2001-06-29
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/053 , H01F1/057
CPC分类号： H01F1/058 , H01F1/0578 , H01F41/0266
摘要： The step of preparing a rapidly solidified alloy by rapidly quenching a melt of an R-T-B-C based rare-earth alloy (where R is at least one of the rare-earth elements including Y, T is a transition metal including iron as its main ingredient, B is boron, and C is carbon) and the step of thermally treating and crystallizing the rapidly solidified alloy are included. The step of thermally treating results in producing a first compound phase with an R2Fe14B type crystal structure and a second compound phase having a diffraction peak at a site with an interplanar spacing d of 0.295 nm to 0.300 nm (i.e., where 2θ=30 degrees). An intensity ratio of the diffraction peak of the second compound phase to that of R2Fe14B type crystals representing a (410) plane is at least 10%. The present invention provides an R-T-B-C based rare-earth alloy magnetic material, including carbon (C) as an indispensable element but exhibiting excellent magnetic properties, and makes it possible to recycle rare-earth magnets.
摘要翻译：通过快速淬火RTBC型稀土合金（其中R是包括Y，T中的至少一种稀土元素）的熔体制备快速固化的合金的步骤是以铁为主要成分的过渡金属B 是硼，C是碳），并且包括热处理和结晶快速固化的合金的步骤。热处理的步骤导致产生具有R 2 Fe 14 B型晶体结构的第一化合物相和在具有衍生峰的位置处具有衍射峰的第二化合物相晶面间距d为0.295nm至0.300nm（即，其中2θ= 30度）。代表（410）面的第二化合物相的衍射峰与R 2 Fe 14 B型晶体的强度比为至少10％。本发明提供了一种R-T-B-C系稀土合金磁性材料，其包含碳（C）作为不可缺少的元素，但具有优异的磁特性，并且可以回收稀土类磁体。

4. 发明授权

US06818041B2 Magnetic alloy powder for permanent magnet and method for producing the same 失效
标题翻译：用于永磁体的磁性合金粉末及其制造方法
公开(公告)号：US06818041B2
公开(公告)日：2004-11-16
申请号：US09952056
申请日：2001-09-14
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： B22F100
CPC分类号： H01F1/0574 , H01F1/058
摘要： Magnetic alloy powder for a permanent magnet contains: R of about 20 mass percent to about 40 mass percent (R is Y, or at least one type of rare earth element); T of about 60 mass percent to about 79 mass percent (T is a transition metal including Fe as a primary component); and Q of about 0.5 mass percent to about 2.0 mass percent (Q is an element including B (boron) and C (carbon)). The magnetic alloy powder is formed by an atomize method, and the shape of particles of the powder is substantially spherical. The magnetic alloy powder includes a compound phase having Nd2Fe14B tetragonal structure as a primary composition phase. A ratio of a content of C to a total content of B and C is about 0.05 to about 0.90.
摘要翻译：用于永磁体的磁性合金粉末包含：R为约20质量％至约40质量％（R为Y或至少一种稀土元素）; T为约60质量％至约79质量％（T为包含Fe为主要成分的过渡金属）; 和Q为约0.5质量％至约2.0质量％（Q为包含B（硼）和C（碳）的元素）。磁性合金粉末通过雾化法形成，粉末的形状基本上是球形的。磁性合金粉末包括具有Nd 2 Fe 14 B四方晶系的化合物相作为主要组成相。 C与B和C的总含量之比为约0.05至约0.90。

5. 发明授权

US07550047B2 Rare earth element-iron-boron alloy and magnetically anisotropic permanent magnet powder and method for production thereof 有权
标题翻译：稀土元素 - 铁 - 硼合金和磁各向异性永磁体粉末及其制造方法
公开(公告)号：US07550047B2
公开(公告)日：2009-06-23
申请号：US10496504
申请日：2002-12-18
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/057
CPC分类号： C22F1/16 , B22F2998/00 , C22C1/0441 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/14 , H01F1/0573 , H01F1/0578 , H01F41/0266 , Y10T428/12472 , B22F9/023
摘要： A method of making a magnetically anisotropic magnet powder according to the present invention includes the steps of preparing a master alloy by cooling a rare-earth-iron-boron based molten alloy and subjecting the master alloy to an HDDR process. The step of preparing the master alloy includes the step of forming a solidified alloy layer, including a plurality of R2Fe14B-type crystals (where R is at least one element selected from the group consisting of the rare-earth elements and yttrium) in which rare-earth-rich phases are dispersed, by cooling the molten alloy through contact with a cooling member.
摘要翻译：根据本发明的制备磁各向异性磁体粉末的方法包括通过冷却稀土 - 铁 - 硼基熔融合金并使母合金进行HDDR工艺来制备母合金的步骤。制备母合金的步骤包括形成固化的合金层的步骤，其包括多个R2Fe14B型晶体（其中R是选自稀土元素和钇中的至少一种元素），其中稀有金属通过与冷却部件的接触来冷却熔融合金，分散富含相的相。

6. 发明申请

US20060016515A1 Sinter magnet made from rare earth-iron-boron alloy powder for magnet 审中-公开
标题翻译：由稀土 - 铁 - 硼合金粉末制成的烧结磁体用于磁铁
公开(公告)号：US20060016515A1
公开(公告)日：2006-01-26
申请号：US10503359
申请日：2003-02-04
申请人： Hiroyuki Tomizawa , Yuji Kaneko , Tomoori Odaka
发明人： Hiroyuki Tomizawa , Yuji Kaneko , Tomoori Odaka
IPC分类号： H01F1/057
CPC分类号： C22C38/005 , B22F2998/10 , B22F2999/00 , C22C1/0441 , C22C38/002 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0577 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F2202/05
摘要： A rare-earth-iron-boron based alloy powder, in which a heavy rare-earth element such as Dy is present at a higher concentration in a main phase than in a grain boundary phase and which can be sintered easily, and a method of making such an alloy powder are provided. A rare-earth-iron-boron based magnet alloy according to the present invention includes, as a main phase, a plurality of R2Fe14B type crystals (where R is at least one element selected from the group consisting of the rare-earth elements and yttrium) in which rare-earth-rich phases are dispersed. The main phase includes Dy and/or Tb at a higher concentration than a grain boundary phase does.
摘要翻译：稀土 - 铁 - 硼基合金粉末，其中重稀土元素如Dy在主相中以比在晶界相中高的浓度存在，并且易于烧结，制成这种合金粉末。根据本发明的稀土 - 铁 - 硼基磁体合金包括多个R 2 2 Fe 14 B型晶体作为主相，其中R 是选自稀土元素和钇中的至少一种元素），其中分散稀土相。主相包括比晶界相高的Dy和/或Tb。

7. 发明授权

US07867343B2 Rare earth magnet and method for production thereof 有权
标题翻译：稀土磁铁及其制造方法
公开(公告)号：US07867343B2
公开(公告)日：2011-01-11
申请号：US11819196
申请日：2007-06-26
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/057
CPC分类号： C22C28/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C45/02 , H01F1/0571 , H01F1/0573 , H01F1/0577 , H01F1/058 , H01F1/059
摘要： In a rare earth magnet, an added heavy rare earth element RH such as Dy is effectively used without any waste, so as to effectively improve the coercive force. First, a molten alloy of a material alloy for an R-T-Q rare earth magnet (R is a rare earth element, T is a transition metal element, and Q is at least one element selected from the group consisting of B, C, N, Al, Si, and P), the rare earth element R containing at least one kind of element RL selected from the group consisting of Nd and Pr and at least one kind of element RH selected from the group consisting of Dy Tb, and Ho is prepared. The molten alloy is quenched, so as to produce a solidified alloy. Thereafter, a thermal treatment in which the rapidly solidified alloy is held in a temperature range of 400° C. or higher and lower than 800° C. for a period of not shorter than 5 minutes nor longer than 12 hours is performed. By the thermal treatment, the element RH can be moved from the grain boundary phase to the main phase, so that the coercive force is increased.
摘要翻译：在稀土类磁铁中，可以有效地使用Dy等添加的重稀土元素RH，而不会有任何浪费，有效地提高矫顽力。首先，用于RTQ稀土类磁铁的材料合金的熔融合金（R是稀土元素，T是过渡金属元素，Q是选自B，C，N，Al中的至少一种元素，Si和P），制备含有选自Nd和Pr中的至少一种元素RL的稀土元素R和选自Dy Tb和Ho的至少一种元素RH，。熔融合金淬火，以产生固化合金。此后，进行快速凝固的合金在400℃以上且低于800℃的温度范围内进行5分钟以上12小时以下的热处理。通过热处理，元件RH可以从晶界相移动到主相，从而增强矫顽力。

8. 发明申请

US20070261766A1 Rare earth magnet and method for production thereof 有权
公开(公告)号：US20070261766A1
公开(公告)日：2007-11-15
申请号：US11819196
申请日：2007-06-26
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/00
CPC分类号： C22C28/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C45/02 , H01F1/0571 , H01F1/0573 , H01F1/0577 , H01F1/058 , H01F1/059
摘要： In a rare earth magnet, an added heavy rare earth element RH such as Dy is effectively used without any waste, so as to effectively improve the coercive force. First, a molten alloy of a material alloy for an R-T-Q rare earth magnet (R is a rare earth element, T is a transition metal element, and Q is at least one element selected from the group consisting of B, C, N, Al, Si, and P), the rare earth element R containing at least one kind of element RL selected from the group consisting of Nd and Pr and at least one kind of element RH selected from the group consisting of Dy Tb, and Ho is prepared. The molten alloy is quenched, so as to produce a solidified alloy. Thereafter, a thermal treatment in which the rapidly solidified alloy is held in a temperature range of 400° C. or higher and lower than 800° C. for a period of not shorter than 5 minutes nor longer than 12 hours is performed. By the thermal treatment, the element RH can be moved from the grain boundary phase to the main phase, so that the coercive force is increased.

9. 发明授权

US07258751B2 Rare earth magnet and method for production thereof 有权
标题翻译：稀土磁铁及其制造方法
公开(公告)号：US07258751B2
公开(公告)日：2007-08-21
申请号：US10480309
申请日：2002-06-19
申请人： Hiroyuki Tomizawa , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F1/057
CPC分类号： C22C28/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C45/02 , H01F1/0571 , H01F1/0573 , H01F1/0577 , H01F1/058 , H01F1/059
摘要： In a rare earth magnet, an added heavy rare earth element RH such as Dy is effectively used without any waste, so as to effectively improve the coercive force. First, a molten alloy of a material alloy for an R-T-Q rare earth magnet (R is a rare earth element, T is a transition metal element, and Q is at least one element selected from the group consisting of B, C, N, Al, Si, and P), the rare earth element R containing at least one kind of element RL selected from the group consisting of Nd and Pr and at least one kind of element RH selected from the group consisting of Dy Tb, and Ho is prepared. The molten alloy is quenched, so as to produce a solidified alloy. Thereafter, a thermal treatment in which the rapidly solidified alloy is held in a temperature range of 400° C. or higher and lower than 800° C. for a period of not shorter than 5 minutes nor longer than 12 hours is performed. By the thermal treatment, the element RH can be moved from the grain boundary phase to the main phase, so that the coercive force is increased.
摘要翻译：在稀土类磁体中，有效地使用Dy等添加的重稀土元素R used而没有浪费，有效地提高了矫顽力。首先，用于RTQ稀土类磁铁的材料合金的熔融合金（R是稀土元素，T是过渡金属元素，Q是选自B，C，N，Al中的至少一种元素，Si和P），含有选自Nd和Pr中的至少一种元素R L的至少一种稀土元素R和至少一种元素R < / SUB>选自Dy Tb和Ho。熔融合金淬火，以产生固化合金。此后，进行快速凝固的合金在400℃以上且低于800℃的温度范围内进行5分钟以上12小时以下的热处理。通过热处理，元素R H H可以从晶界相移动到主相，使得矫顽力增加。

10. 发明授权

US07172659B2 Method for producing quenched R-T-B—C alloy magnet 有权
标题翻译：生产淬火R-T-B-C合金磁铁的方法
公开(公告)号：US07172659B2
公开(公告)日：2007-02-06
申请号：US10481025
申请日：2002-06-24
申请人： Hiroyuki Tomizawa , Koji Nakahara , Yuji Kaneko
发明人： Hiroyuki Tomizawa , Koji Nakahara , Yuji Kaneko
IPC分类号： H01F1/053 , H01F1/057 , H01F1/058
CPC分类号： H01F1/057 , H01F1/0578 , H01F1/058 , H01F41/0253
摘要： The present invention is a production method of an R-T-B—C rare earth alloy (R is at least one element selected from the group consisting of rare earth elements and yttrium, T is a transition metal including iron as a main component, B is boron, and C is carbon). An R-T-B bonded magnet containing a resin component, or an R-T-B sintered magnet with a resin film formed on the surface thereof is prepared, and a solvent alloy containing a rare earth element R and a transition metal element T is prepared. Thereafter, the R-T-B bonded magnet is molten together with the solvent alloy. In this way, a rare earth alloy can be recovered from a spent bonded magnet or a defective one generated in a production process stage, and a rapidly quenched alloy magnet can be obtained. As a result, magnet powder is recovered from the R-T-B magnet, and the recycling of a magnet including a resin component can be realized.
摘要翻译：本发明是RTBC稀土类合金的制造方法（R为选自稀土元素和钇中的至少一种元素，T为以铁为主要成分的过渡金属，B为硼，C为是碳）。制备含有树脂组分的R-T-B粘结磁体或其表面上形成有树脂膜的R-T-B烧结磁体，并制备含有稀土元素R和过渡金属元素T的溶剂合金。此后，R-T-B粘结磁体与溶剂合金一起熔融。以这种方式，可以从废粘结磁体或在生产工艺阶段产生的缺陷合金中回收稀土合金，并且可以获得快速淬火的合金磁体。结果，从R-T-B磁体中回收磁铁粉末，能够实现包含树脂成分的磁体的再循环。

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