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1. 发明授权

US6045629A Alloy used for production of a rare-earth magnet and method for producing the same 失效
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US6045629A
公开(公告)日：2000-04-04
申请号：US18050
申请日：1998-02-03
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D13/02 , B22D13/10 , B22F1/00 , C22C1/04 , C22C33/02 , C22C38/00 , H01F1/053 , H01F1/057 , H01F1/055
CPC分类号： C22C1/0441 , H01F1/057 , H01F1/0571 , B22F2009/041 , B22F2998/10 , B22F2999/00
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability.The alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, 1% or less of B, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, 1% or less of B, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The total volume fraction of R.sub.2 Fe.sub.17 and R.sub.2 Fe.sub.14 B phases (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy. The average size of each of the R.sub.2 Fe.sub.17 and R.sub.2 Fe.sub.14 B phases is 20 .mu.m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，1％以下的B，余量为Fe，（b）35〜60％的Nd，Dy和/ Pr，1％以下的B，以及选自Co，35重量％以下的Co，4重量％以下的Cu，3重量％以下的Al和3重量％以下的至少一种元素，重量或更少的Ga，余量为Fe。在合金中，R2Fe17和R2Fe14B相（Fe可以用Cu，Co，Al或Ga代替）的总体积分数为25％以上。 R2Fe17和R2Fe14B相的平均尺寸为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

2. 发明授权

US06328825B1 Alloy used for production of a rare-earth magnet and method for producing the same 有权
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US06328825B1
公开(公告)日：2001-12-11
申请号：US09314164
申请日：1999-05-19
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D1300
CPC分类号： H01F1/0571 , H01F1/0551
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability. The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The volume fraction of R2Fe17 phase (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy and the average size of an R2Fe17 phase is 20 &mgr;m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，余量为Fe，或（b）35〜60％的Nd，Dy和/或Pr，以及至少一种元素选自Co占35重量％或更少，Cu为4重量％以下，Al为3重量％以下，Ga为3重量％以下，余量为Fe。在合金中，R2Fe17相（Fe可以被Cu，Co，Al或Ga代替）的体积分数为25％以上，R2Fe17相的平均粒径为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

3. 发明授权

US5948179A Alloy used for production of a rare-earth magnet and method for producing the same 失效
标题翻译：用于生产稀土磁体的合金及其制造方法
公开(公告)号：US5948179A
公开(公告)日：1999-09-07
申请号：US968005
申请日：1997-11-12
申请人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
发明人： Hiroshi Hasegawa , Shiro Sasaki , Yoichi Hirose , Shinya Fujito , Koichi Yajima
IPC分类号： B22D13/02 , B22D13/10 , C22C38/00 , H01F1/055 , H01F1/057 , H01F1/06
CPC分类号： H01F1/0551 , H01F1/055 , H01F1/0571
摘要： An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability.The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, or (b) from 35 to 60% of Nd, Dy and/or Pr, and at least one element selected from the group consisting of 35% by weight or less of Co, 4% by weight or less of Cu, 3% by weight or less of Al and 3% by weight or less of Ga, and the balance being Fe. The volume fraction of R.sub.2 Fe.sub.17 phase (Fe may be replaced with Cu, Co, Al or Ga) is 25% or more in the alloy and the average size of an R.sub.2 Fe.sub.17 phase is 20 .mu.m or less. The alloy can be produced by a centrifugal casting at an average accumulating rate of melt at 0.1 cm/second or less.
摘要翻译：提供了用于生产稀土类磁体合金的合金，特别是双合金方法中的边界相合金，以提高粉碎性。该合金由（a）35〜60％的Nd，Dy和/或Pr，余量为Fe，或（b）35〜60％的Nd，Dy和/或Pr，以及至少一种元素选自Co占35重量％或更少，Cu为4重量％以下，Al为3重量％以下，Ga为3重量％以下，余量为Fe。在合金中，R2Fe17相的体积分数（Fe可以被Cu，Co，Al或Ga代替）为25％以上，R2Fe17相的平均粒径为20μm以下。该合金可以以0.1cm /秒以下的熔融物的平均累积速度通过离心铸造来制造。

4. 发明授权

US5595608A Preparation of permanent magnet 失效
标题翻译：永磁体的制备
公开(公告)号：US5595608A
公开(公告)日：1997-01-21
申请号：US333982
申请日：1994-11-02
申请人： Katashi Takebuchi , Shinya Fujito , Shinya Hashimoto , Koichi Yajima
发明人： Katashi Takebuchi , Shinya Fujito , Shinya Hashimoto , Koichi Yajima
IPC分类号： H01F1/057 , H01F1/03
CPC分类号： H01F1/0577
摘要： A permanent magnet which contains R, T and B as main ingredients wherein R is Y or a rare earth element and T is Fe or Fe and Co and has a primary phase of R.sub.2 T.sub.14 B is produced by compacting a mixture of 60 to 95 wt % of a primary phase-forming master alloy and a grain boundary phase-forming master alloy both in powder form and sintering the compact. The primary phase-forming master alloy has columnar crystal grains of R.sub.2 T.sub.14 B with a mean grain size of 3-50 .mu.m and grain boundaries of an R rich phase and contains 26-32 wt % of R. The grain boundary phase-forming master alloy is a crystalline alloy consisting essentially of 32-60 wt % of R and the balance of Co or Co and Fe. In anther form, a permanent magnet which contains R, T and B as main ingredients wherein R is yttrium or a rare earth element, T is Fe or Fe+Co/Ni and has a primary phase of R.sub.2 T.sub.14 B is produced by compacting a mixture of a primary phase-forming master alloy and a grain boundary-forming master alloy both in powder form and sintering the compact. The primary phase-forming master alloy has a primary phase of R.sub.2 T.sub.14 B and grain boundaries of an R rich phase. The grain boundary-forming master alloy contains 40-65 wt % of R, 30-60 wt % of Fe, Co or Ni and 1-12 wt % of Sn, In or Ga.
摘要翻译：含有R，T和B作为主要成分的永磁体，其中R是Y或稀土元素，T是Fe或Fe和Co，并且具有R2T14B的初相是通过将60至95重量％的主要成型母合金和晶界相成形母合金粉末形式并烧结成型。主相成形母合金具有R2T14B的平均晶粒尺寸为3-50μm的柱状晶粒和富R相的晶界，并且含有26-32wt％的R。晶界相形成母合金是基本上由32-60重量％的R和余量的Co或Co和Fe组成的结晶合金。在花药形式中，含有R，T和B作为主要成分的永磁体，其中R是钇或稀土元素，T是Fe或Fe + Co / Ni，并且具有R2T14B的初相通过压制主要成型母合金和晶界形成母合金，均为粉末形式并烧结成型。主相成型母合金具有R2T14B的初相和富R相的晶界。晶界形成母合金含有40-65重量％的R，30-60重量％的Fe，Co或Ni和1-12重量％的Sn，In或Ga。

5. 发明授权

US09177705B2 Sintered rare earth magnet, method of producing the same, and rotating machine 有权
标题翻译：烧结稀土磁铁，其制造方法和旋转机
公开(公告)号：US09177705B2
公开(公告)日：2015-11-03
申请号：US14119354
申请日：2012-05-25
申请人： Tetsuya Hidaka , Kazuo Sato , Kazuya Sakamoto , Shinya Fujito , Motoaki Hosako , Motohisa Murata , Koji Mitake
发明人： Tetsuya Hidaka , Kazuo Sato , Kazuya Sakamoto , Shinya Fujito , Motoaki Hosako , Motohisa Murata , Koji Mitake
IPC分类号： H01F1/08 , H01F41/02 , C22C33/02 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , H01F1/057
CPC分类号： H01F1/086 , B22F2998/10 , C22C33/02 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , C22C2202/02 , H01F1/0577 , H01F41/0266 , B22F1/0003 , B22F3/02 , B22F3/10
摘要： A sintered rare earth magnet rotating machine and method improve temperature properties and strength having an excellent corrosion resistance. The sintered rare earth magnet includes at least a main phase composed of R2T14B (R represents at least one rare earth element of Nd, Pr or both and T represents at least one transition metal element including Fe or Fe and Co) compound and a grain boundary phase containing a higher proportion of R than the main phase, wherein the main phase includes a heavy rare earth element (one of Dy, Tb or both), at least part of main phase grains of the main phase included in the sintered rare earth magnet includes at least the following regions, low, high and intermediate concentration regions. These regions exist in order of low, high, and intermediate concentration regions, from low concentration region towards the grain boundary phase in the main phase grains.
摘要翻译：一种烧结稀土磁体旋转机及改善耐腐蚀性的温度特性和强度的方法。烧结稀土类磁体至少包括由R2T14B构成的主相（R表示至少一种Nd，Pr或二者的稀土元素，T表示至少一种包含Fe或Fe和Co）化合物的过渡金属元素和晶界相中含有比主相高的R比例，其中主相包括重稀土元素（Dy，Tb或其中之一），主相的至少部分主相晶粒包括在烧结稀土磁体中至少包括以下区域，低，高和中等浓度区域。这些区域按照主相晶粒中低浓度区域和晶界相的低，高和中等浓度区域的顺序存在。

6. 发明申请

US20140184370A1 SINTERED RARE EARTH MAGNET, METHOD OF PRODUCING THE SAME, AND ROTATING MACHINE 有权
标题翻译：烧结稀土磁铁，其制造方法和旋转机
公开(公告)号：US20140184370A1
公开(公告)日：2014-07-03
申请号：US14119354
申请日：2012-05-25
申请人： Tetsuya Hidaka , Kazuo Sato , Kazuya Sakamoto , Shinya Fujito , Motoaki Hosako , Motohisa Murata , Koji Mitake
发明人： Tetsuya Hidaka , Kazuo Sato , Kazuya Sakamoto , Shinya Fujito , Motoaki Hosako , Motohisa Murata , Koji Mitake
IPC分类号： H01F1/08 , H01F41/02
CPC分类号： H01F1/086 , B22F2998/10 , C22C33/02 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/14 , C22C38/16 , C22C2202/02 , H01F1/0577 , H01F41/0266 , B22F1/0003 , B22F3/02 , B22F3/10
摘要： A sintered rare earth magnet rotating machine and method improve temperature properties and strength having an excellent corrosion resistance. The sintered rare earth magnet includes at least a main phase composed of R2T14B (R represents at least one rare earth element of Nd, Pr or both and T represents at least one transition metal element including Fe or Fe and Co) compound and a grain boundary phase containing a higher proportion of R than the main phase, wherein the main phase includes a heavy rare earth element (one of Dy, Tb or both), at least part of main phase grains of the main phase included in the sintered rare earth magnet includes at least the following regions, low, high and intermediate concentration regions. These regions exist in order of low, high, and intermediate concentration regions, from low concentration region towards the grain boundary phase in the main phase grains.
摘要翻译：一种烧结稀土磁体旋转机及改善耐腐蚀性的温度特性和强度的方法。烧结稀土类磁体至少包括由R2T14B构成的主相（R表示至少一种Nd，Pr或二者的稀土元素，T表示至少一种包含Fe或Fe和Co）化合物的过渡金属元素和晶界相中含有比主相高的R比例，其中主相包括重稀土元素（Dy，Tb或其中之一），主相的至少部分主相晶粒包括在烧结稀土磁体中至少包括以下区域，低，高和中等浓度区域。这些区域按照主相晶粒中低浓度区域和晶界相的低，高和中等浓度区域的顺序存在。

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