公开(公告)号：US20100003160A1

公开(公告)日：2010-01-07

申请号：US12560863

申请日：2009-09-16

申请人： Hiroyuki TOMIZAWA

发明人： Hiroyuki TOMIZAWA

IPC分类号： C22C38/04 ,  C22C38/00 ,  C22C38/10 ,  C22C38/06 ,  C22C38/16

CPC分类号： H01F1/0577 ,  C22C38/005 ,  C22C38/04 ,  C22C38/06

摘要： An R-T-B based sintered magnet according to the present invention has a composition comprising: 12 at % to 15 at % of a rare-earth element R; 5.0 at % to 8.0 at % of boron B; 0.1 at % to at % of Al; 0.02 at % to less than 0.2 at % of Mn; and a transition metal T as the balance. The rare-earth element R is at least one element selected from the rare-earth elements, including Y (yttrium), and includes at least one of Nd and Pr. The transition element T includes Fe as its main element.

摘要翻译： 根据本发明的R-T-B系烧结磁体具有包含：稀土元素R的12原子％〜15原子％的组成; 5.0％至8.0％的硼B; 0.1％至at％的Al; 0.02％至小于0.2at％的Mn; 和过渡金属T作为平衡。 稀土元素R是选自包括Y（钇）的稀土元素中的至少一种元素，并且包括Nd和Pr中的至少一种。 过渡元素T包括Fe作为其主要元素。

公开(公告)号：US20080113210A1

公开(公告)日：2008-05-15

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： B32B3/10 ,  H01F1/00 ,  C22C38/00

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R 2 Fe 14 B型晶体（其中R是至少一个 通过与熔融部件的接触来冷却熔融合金，使稀土类稀土相分散在稀土元素和钇中的元素）。

公开(公告)号：US20060201585A1

公开(公告)日：2006-09-14

申请号：US10567502

申请日：2004-08-10

申请人： Hiroyuki Tomizawa ,  Yutaka Matsuura

发明人： Hiroyuki Tomizawa ,  Yutaka Matsuura

IPC分类号： H01F1/057

CPC分类号： C22C38/06 ,  B22F2003/248 ,  B22F2998/00 ,  B22F2998/10 ,  C22C33/0278 ,  C22C38/005 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F1/058 ,  B22F3/02 ,  B22F2202/05 ,  B22F9/08 ,  B22F9/023 ,  B22F9/04 ,  B22F3/10 ,  B22F3/24

摘要： A rare-earth sintered magnet according to the present invention, of which the main phase is an R2T14B type compound phase, includes: 27 mass % through 32 mass % of R, which is at least one rare-earth element that is selected from the group consisting of Nd, Pr, Tb, and Dy and that always includes at least one of Nd and Pr; 60 mass % through 73 mass % of T, which is either Fe alone or a mixture of Fe and Co; 0.85 mass % through 0.98 mass % of Q, which is either B alone or a mixture of B and C and which is converted-into B on a number of atoms basis when its mass percentage is calculated; more than 0 mass % through 0.3 mass % of Zr; at most 2.0 mass % of an additive element M, which is at least one element selected from the group consisting of Al, Cu, Ga, In and Sn; and inevitably contained impurities.

摘要翻译： 根据本发明的稀土烧结磁体，其主相是R 2 T 14 T型化合物相，包括：27质量％至32质量％ R是选自Nd，Pr，Tb和Dy中的至少一种稀土元素，并且总是包括Nd和Pr中的至少一种; 60质量％至73质量％的T，其为单独的Fe或Fe和Co的混合物; 0.85质量％至0.98质量％的Q，其为单独的B或B和C的混合物，并且当其质量百分比计算时，以多个原子转化为B; 大于0质量％至0.3质量％的Zr; 至多2.0质量％的添加元素M，其为选自Al，Cu，Ga，In和Sn中的至少一种元素; 并且不可避免地含有杂质。

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。

公开(公告)号：US08092619B2

公开(公告)日：2012-01-10

申请号：US12996828

申请日：2009-06-11

申请人： Futoshi Kuniyoshi ,  Rintaro Ishii ,  Hiroyuki Tomizawa

发明人： Futoshi Kuniyoshi ,  Rintaro Ishii ,  Hiroyuki Tomizawa

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： An R-T-Cu—Mn—B based sintered magnet includes: 12.0 at % to 15.0 at % of R, which is at least one of the rare-earth elements that include Y and of which at least 50 at % is Pr and/or Nd; 5.5 at % to 6.5 at % of B; 0.08 at % to 0.35 at % of Cu; 0.04 at % to less than 0.2 at % of Mn; at most 2 at % (including 0 at %) of M, which is one, two, or more elements that are selected from the group consisting of Al, Ti, V, Cr, Ni, Zn, Ga, Zr, Nb, Mo, Ag, In, Sn, Hf, Ta, W, Au, Pb and Bi; and T as the balance, which is either Fe alone or Fe and Co and of which at most 20 at % is Co if T includes both Fe and Co.

摘要翻译： 一种RT-Cu-Mn-B系烧结磁体包括：12.0at％至15.0at％的R，其是至少一种包括Y的稀土元素，并且其中至少50原子％是Pr和/或 钕 5.5％至6.5％的B; 0.08原子％至0.35原子％的Cu; 0.04％至小于0.2at％的Mn; 最多为2原子％（包括0原子％）的M，其为选自Al，Ti，V，Cr，Ni，Zn，Ga，Zr，Nb，Mo中的一种，两种或更多种元素 ，Ag，In，Sn，Hf，Ta，W，Au，Pb和Bi; 和T为余量，单独为Fe或Fe和Co，其中最多为20原子％为Co，如果T包括Fe和Co

公开(公告)号：US20110095855A1

公开(公告)日：2011-04-28

申请号：US12996828

申请日：2009-06-11

申请人： Futoshi Kuniyoshi ,  Rintaro Ishii ,  Hiroyuki Tomizawa

发明人： Futoshi Kuniyoshi ,  Rintaro Ishii ,  Hiroyuki Tomizawa

IPC分类号： H01F7/02

CPC分类号： H01F1/0577 ,  H01F41/0266

摘要： An R-T-Cu—Mn—B based sintered magnet includes: 12.0 at % to 15.0 at % of R, which is at least one of the rare-earth elements that include Y and of which at least 50 at % is Pr and/or Nd; 5.5 at % to 6.5 at % of B; 0.08 at % to 0.35 at % of Cu; 0.04 at % to less than 0.2 at % of Mn; at most 2 at % (including 0 at %) of M, which is one, two, or more elements that are selected from the group consisting of Al, Ti, V, Cr, Ni, Zn, Ga, Zr, Nb, Mo, Ag, In, Sn, Hf, Ta, W, Au, Pb and Bi; and T as the balance, which is either Fe alone or Fe and Co and of which at most 20 at % is Co if T includes both Fe and Co.

摘要翻译： 一种RT-Cu-Mn-B系烧结磁体包括：12.0at％至15.0at％的R，其是至少一种包括Y的稀土元素，并且其中至少50原子％是Pr和/或 钕 5.5％至6.5％的B; 0.08原子％至0.35原子％的Cu; 0.04％至小于0.2at％的Mn; 最多为2原子％（包括0原子％）的M，其为选自Al，Ti，V，Cr，Ni，Zn，Ga，Zr，Nb，Mo中的一种，两种或更多种元素 ，Ag，In，Sn，Hf，Ta，W，Au，Pb和Bi; 和T为余量，单独为Fe或Fe和Co，其中最多为20原子％为Co，如果T包括Fe和Co

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。

公开(公告)号：US07534311B2

公开(公告)日：2009-05-19

申请号：US10567502

申请日：2004-08-10

申请人： Hiroyuki Tomizawa ,  Yutaka Matsuura

发明人： Hiroyuki Tomizawa ,  Yutaka Matsuura

IPC分类号： H01F1/08

CPC分类号： C22C38/06 ,  B22F2003/248 ,  B22F2998/00 ,  B22F2998/10 ,  C22C33/0278 ,  C22C38/005 ,  C22C38/10 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F1/058 ,  B22F3/02 ,  B22F2202/05 ,  B22F9/08 ,  B22F9/023 ,  B22F9/04 ,  B22F3/10 ,  B22F3/24

摘要： A rare-earth sintered magnet according to the present invention, of which the main phase is an R2T14B type compound phase, includes: 27 mass % through 32 mass % of R, which is at least one rare-earth element that is selected from the group consisting of Nd, Pr, Tb, and Dy and that always includes at least one of Nd and Pr; 60 mass % through 73 mass % of T, which is either Fe alone or a mixture of Fe and Co; 0.85 mass % through 0.98 mass % of Q, which is either B alone or a mixture of B and C and which is converted-into B on a number of atoms basis when its mass percentage is calculated; more than 0 mass % through 0.3 mass % of Zr; at most 2.0 mass % of an additive element M, which is at least one element selected from the group consisting of Al, Cu, Ga, In and Sn; and inevitably contained impurities.

摘要翻译： 根据本发明的稀土类烧结磁体，其主相是R2T14B型化合物相，包括：27质量％〜32质量％的R，其是至少一种稀土元素，其选自 由Nd，Pr，Tb和Dy构成的组，并且总是包括Nd和Pr中的至少一种; 60质量％至73质量％的T，其为单独的Fe或Fe和Co的混合物; 0.85质量％至0.98质量％的Q，其为单独的B或B和C的混合物，并且当其质量百分比计算时，以多个原子转化为B; 大于0质量％至0.3质量％的Zr; 至多2.0质量％的添加元素M，其为选自Al，Cu，Ga，In和Sn中的至少一种元素; 并且不可避免地含有杂质。

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。

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。