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1. 发明授权

US06527822B2 Quenched thin ribbon of rare earth/iron/boron-based magnet alloy 有权
公开(公告)号：US06527822B2
公开(公告)日：2003-03-04
申请号：US09942844
申请日：2001-08-31
申请人： Koichi Hirota , Takehisa Minowa , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto
发明人： Koichi Hirota , Takehisa Minowa , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto
IPC分类号： C22C2914
CPC分类号： B82Y25/00 , B22F9/023 , H01F1/0571 , H01F1/0573 , H01F1/0577 , H01F1/0579
摘要： Disclosed is a novel thin ribbon of a rare earth/iron/boron-based magnet alloy prepared by quenching of an alloy melt by the method of strip casting, from which a sintered permanent magnet is obtained by the powder metallurgical method. The sintered permanent magnet can be imparted with greatly improved magnetic properties or, in particular, residual magnetic flux density when the thin alloy ribbon as the base material thereof has a metallographic phase structure containing “four-phase regions” consisting of (a) an &agr;-iron phase, (b) a R-rich phase, in which R is a rare earth element selected from praseodymium, neodymium, terbium and dysprosium, (c) a RxT4B4 phase, in which T is iron or a combination of iron and a transition metal element other than iron and rare earth elements and x is a positive number varying with the rare earth element, and (d) a R2T14B phase, in which R and T each have the same meaning as defined above, each phase being dispersed with a grain diameter in a limited range, in a volume fraction of from 1 to 10%.

2. 发明授权

US06419723B2 Thin ribbon of rare earth-based permanent magnet alloy 有权
标题翻译：稀土永磁合金薄带
公开(公告)号：US06419723B2
公开(公告)日：2002-07-16
申请号：US09943273
申请日：2001-08-31
申请人： Koichi Hirota , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto , Takehisa Minowa
发明人： Koichi Hirota , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto , Takehisa Minowa
IPC分类号： C22C2914
CPC分类号： H01F1/0577 , H01F1/0571
摘要： Disclosed is a thin alloy ribbon prepared by the strip casting method as an intermediate for the preparation of a sintered rare earth-based permanent magnet or, in particular, a neodymium/iron/boron-type permanent magnet. The thin alloy ribbon is characterized by a specific volume fraction of the four-phase coexisting region consisting of the &agr;-iron phase, R-rich phase, RXT4B4 phase and R2T14B phase each having an average grain diameter in a specified range and a specific volume fraction of the chill crystalline phase. When these requirements are satisfied, the sintered rare earth-based permanent magnet prepared from the thin alloy ribbons can be imparted with improved magnetic properties and high sintering density even without increasing the sintering temperature.
摘要翻译：公开了一种通过带状铸塑法制备的薄合金带，作为制备稀土类烧结永磁体，特别是钕/铁/硼型永磁体的中间体。该薄合金带的特征在于由α-铁相，富R相，RXT4B4相和R2T14B相组成的四相共存区的比体积分数，每相的平均粒径在特定范围内，比容积冷冻结晶相的分数。当满足这些要求时，即使不增加烧结温度，也可以将由薄合金带制备的烧结稀土类永久磁铁赋予改善的磁性能和高烧结密度。

3. 发明授权

US06322637B1 Thin ribbon of rare earth-based permanent magnet alloy 有权
标题翻译：稀土永磁合金薄带
公开(公告)号：US06322637B1
公开(公告)日：2001-11-27
申请号：US09588536
申请日：2000-06-07
申请人： Koichi Hirota , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto , Takehisa Minowa
发明人： Koichi Hirota , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto , Takehisa Minowa
IPC分类号： H01F1057
CPC分类号： H01F1/0577 , H01F1/0571
摘要： Disclosed is a thin alloy ribbon prepared by the strip casting method as an intermediate for the preparation of a sintered rare earth-based permanent magnet or in particular, a neodymium/iron/boron-type permanent magnet. The thin alloy ribbon is characterized by a specific volume fraction of the four-phase coexisting region consisting of the &agr;-iron phase, R-rich phase, RxT4B4 phase and R2T14B phase each having an average grain diameter in a specified range and a specific volume fraction of the chill crystalline phase. When these requirements are satisfied, the sintered rare earth-based permanent magnet prepared from the thin alloy ribbons can be imparted with improved magnetic properties and high sintering density even without increasing the sintering temperature.
摘要翻译：公开了一种薄带合金带，其通过带状铸造法制备为制备稀土类烧结永磁体，特别是钕/铁/硼型永磁体的中间体。该薄合金带的特征在于由α-铁相，富R相，RxT4B4相和R2T14B相组成的四相共存区域的比体积分数，其平均晶粒直径在特定范围内，比容积冷冻结晶相的分数。当满足这些要求时，即使不增加烧结温度，也可以将由薄合金带制备的烧结稀土类永久磁铁赋予改善的磁性能和高烧结密度。

4. 发明授权

US06319335B1 Quenched thin ribbon of rare earth/iron/boron-based magnet alloy 有权
标题翻译：淬火的稀土/铁/硼基磁体合金薄带
公开(公告)号：US06319335B1
公开(公告)日：2001-11-20
申请号：US09502777
申请日：2000-02-11
申请人： Koichi Hirota , Takehisa Minowa , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto
发明人： Koichi Hirota , Takehisa Minowa , Takahiro Hashimoto , Koji Sato , Kenji Yamamoto
IPC分类号： H01F1057
CPC分类号： B82Y25/00 , B22F9/023 , H01F1/0571 , H01F1/0573 , H01F1/0577 , H01F1/0579
摘要： Disclosed is a novel thin ribbon of a rare earth/iron/boron-based magnet alloy prepared by quenching of an alloy melt by the method of strip casting, from which a sintered permanent magnet is obtained by the powder metallurgical method. The sintered permanent magnet can be imparted with greatly improved magnetic properties or, in particular, residual magnetic flux density when the thin alloy ribbon as the base material thereof has a metallographic phase structure containing “four-phase regions” consisting of (a) an &agr;-iron phase, (b) a R-rich phase, in which R is a rare earth element selected from praseodymium, neodymium, terbium and dysprosium, (c) a RxT4B4 phase, in which T is iron or a combination of iron and a transition metal element other than iron and rare earth elements and x is a positive number varying with the rare earth element, and (d) a R2T14B phase, in which R and T each have the same meaning as defined above, each phase being dispersed with a grain diameter in a limited range, in a volume fraction of from 1 to 10%.
摘要翻译：公开了一种稀土/铁/硼基磁体合金的新颖薄带，其通过带状铸造方法淬火合金熔体而制备，通过粉末冶金法获得烧结永久磁铁。当作为其基材的薄合金带具有包含由（a）α（a））组成的“四相区域”的金相相结构时，可以赋予烧结永久磁铁大大提高的磁性能，特别是剩余磁通密度 - 相，（b）富R相，其中R是选自镨，钕，铽和镝的稀土元素，（c）RxT4B4相，其中T是铁或铁和除铁和稀土元素以外的过渡金属元素，x是稀土元素变化的正数，（d）R2T14B相，其中R和T各自具有与上述相同的含义，每相分散有粒径在有限范围内，体积分数为1〜10％。

5. 发明申请

US20080277028A1 Rare-Earth Alloy, Rare-Earth Sintered Magnet, And Methods Of Manufacturing 有权
标题翻译：稀土合金，稀土烧结磁体及制造方法
公开(公告)号：US20080277028A1
公开(公告)日：2008-11-13
申请号：US12044101
申请日：2008-03-07
申请人： Kazuaki SAKAKI , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki SAKAKI , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的1-200毫米等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

6. 发明授权

US07211157B2 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
标题翻译：稀土类合金，稀土类烧结磁体及制造方法
公开(公告)号：US07211157B2
公开(公告)日：2007-05-01
申请号：US10864427
申请日：2004-06-10
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20–30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10–45 wt % of Fe, 1–10 wt % of Cu and 0.5–5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1–200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05–3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的1-200毫米等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

7. 发明授权

US06793742B2 Preparation of bonded rare earth magnet-forming alloy and bonded rare earth magnet composition 有权
标题翻译：粘结稀土磁体成形合金和结合稀土磁体组合物的制备
公开(公告)号：US06793742B2
公开(公告)日：2004-09-21
申请号：US10151096
申请日：2002-05-21
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Takehisa Minowa
IPC分类号： H01F1055
CPC分类号： H01F1/0551 , B22F2009/041 , B22F2998/00 , C22C1/0441 , H01F1/055 , H01F1/0558 , B22F9/04
摘要： An alloy powder for bonded rare earth magnets is prepared by melting an alloy consisting essentially of 20-30 wt % of Sm or a mixture of rare earth elements (inclusive of Y) containing at least 50 wt % of Sm, 10-45 wt % of Fe, 1-10 wt % of Cu, 0.5-5 wt % of Zr, and the balance of Co, quenching the melt by a strip casting technique, to form a rare earth alloy strip containing at least 20% by volume of equiaxed crystals with a grain size of 1-200 &mgr;m and having a gage of 0.05-3 mm, and heat treating the strip in a non-oxidizing atmosphere at 1000-1300° C. for 0.5-20 hours, followed by aging treatment and grinding.
摘要翻译：通过熔融基本上由20-30重量％的Sm组成的合金或含有至少50重量％的Sm，10〜45重量％的Sm的稀土元素（包括Y）的混合物来制备用于粘结稀土磁体的合金粉末，的Fe，1-10重量％的Cu，0.5-5重量％的Zr，余量为Co，通过带钢铸造技术淬火熔体，以形成含有至少20体积％等轴的稀土合金条晶粒尺寸为1-200μm，表面积为0.05-3mm，并在非氧化性气氛中在1000-1300℃下热处理该条带0.5-20小时，然后进行时效处理和研磨。

8. 发明授权

US07691323B2 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
标题翻译：稀土类合金，稀土类烧结磁体及制造方法
公开(公告)号：US07691323B2
公开(公告)日：2010-04-06
申请号：US12044101
申请日：2008-03-07
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： B22F1/00 , H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.
摘要翻译：稀土合金锭通过将由20-30重量％的Sm单独或至少50重量％的Sm与至少一种其它稀土元素组合的稀土组分，10重量％ 45重量％的Fe，1-10重量％的Cu和0.5-5重量％的Zr，余量为Co，并在条带铸造工艺中淬火熔融合金。带状铸造合金锭的含量为至少20体积％，厚度为0.05-3毫米的等于1-200微米的等轴晶粒。由这种合金制成的稀土烧结磁体显示出优异的磁性能，并且可以在烧结和固溶处理期间在宽的最佳温度范围内制造。

9. 发明申请

US20070051431A1 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 审中-公开
公开(公告)号：US20070051431A1
公开(公告)日：2007-03-08
申请号：US11591547
申请日：2006-11-02
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.

10. 发明申请

US20060185766A1 Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing 有权
公开(公告)号：US20060185766A1
公开(公告)日：2006-08-24
申请号：US10864427
申请日：2004-06-10
申请人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
发明人： Kazuaki Sakaki , Koji Sato , Takahiro Hashimoto , Hajime Nakamura , Takehisa Minowa
IPC分类号： H01F1/055
CPC分类号： C22C1/0441 , B22F2003/248 , B22F2009/041 , B22F2998/10 , C22C19/007 , C22C19/07 , H01F1/0557 , H01F41/026 , H01F41/0266 , H01F41/0273 , B22F9/04 , B22F3/02 , B22F3/10 , B22F3/24
摘要： A rare-earth alloy ingot is produced by melting an alloy composed of 20-30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10-45 wt % of Fe, 1-10 wt % of Cu and 0.5-5 wt % of Zr, with the balance being Co, and quenching the molten alloy in a strip casting process. The strip-cast alloy ingot has a content of 1-200 μm size equiaxed crystal grains of at least 20 vol % and a thickness of 0.05-3 mm. Rare-earth sintered magnets made from such alloys exhibit excellent magnetic properties and can be manufactured under a broad optimal temperature range during sintering and solution treatment.

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