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1. 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。

2. 发明申请

US20030098094A1 Rare earth magnet alloy ingot, manufacturing method for the same, R-T-B type magnet alloy ingot, R-T-B type magnet, R-T-B type bonded magnet, R-T-B type exchange spring magnet alloy ingot, R-T-B type exchange spring magnet, and R-T-B type exchange spring bonded magnet 有权
标题翻译：稀土磁体合金锭，制造方法相同，R-T-B型磁铁合金锭，R-T-B型磁铁，R-T-B型粘结磁铁，R-T-B型交换弹簧磁铁合金锭，R-T-B型交换弹簧磁铁和R-T-B型交换弹簧粘结磁铁
公开(公告)号：US20030098094A1
公开(公告)日：2003-05-29
申请号：US10232520
申请日：2002-09-03
申请人： SHOWA DENKO K.K.
发明人： Hiroshi Hasegawa , Masahide Utsunomiya , Tadanao Ito
IPC分类号： H01F001/057
CPC分类号： 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
摘要： 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 RnullTnullB 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 nullm or more is substantially absent on a cross section.
摘要翻译：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原子的一部分任选被Co，Ni，Cu，Al，Ga，Cr和Mn等所取代），其含有选自Nd，Pr和Dy中的至少一种元素，总计原子数为11.8〜16.5％，B为原子数为5.6〜9.1原子的B。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。

3. 发明授权

US06494968B1 Lamellar rare earth-iron-boron-based magnet alloy particles, process for producing the same and bonded magnet produced therefrom 失效
标题翻译：层状稀土 - 铁 - 硼基磁体合金颗粒，其制造方法和由其制造的粘结磁体
公开(公告)号：US06494968B1
公开(公告)日：2002-12-17
申请号：US09241423
申请日：1999-02-02
申请人： Masaaki Hamano , Minoru Yamasaki , Hirotaka Mizuguchi
发明人： Masaaki Hamano , Minoru Yamasaki , Hirotaka Mizuguchi
IPC分类号： H01F1057
CPC分类号： B82Y25/00 , B22F9/082 , B22F2009/086 , C22C1/0441 , H01F1/0574 , H01F1/0578 , H01F1/0579
摘要： Lamellar rare earth-iron-boron-based magnet alloy particles for a bonded magnet, having an intrinsic coercive force (iHc) of not less than 3.5 kOe, a residual magnetic flux density (Br) of not less than 9.5 kG, and a maximum energy product ((BH)max) of not less than 13 MGOe. These particles have an average major axial diameter of 60 to 500 &mgr;m, an average minor axial diameter of 50 to 460 &mgr;m, an average axis ratio (major axial diameter/minor axial diameter) of 1.1 to 10 and an average aspect ratio (major axial diameter/thickness) of 3 to 100. The magnet alloy particles have a residual magnetic flux density (Br) as high as not less than 10 kG, an intrinsic coercive force (iHc) as large as not less than 3.5 kOe and a maximum energy product ((BH)max) as large as not less than 13 MGOe, are used as a material for high-performance bonded magnets.
摘要翻译：具有不小于3.5kOe的本征矫顽力（iHc），不小于9.5kG的剩余磁通密度（Br）和最大值的最大值的用于粘结磁体的层状稀土 - 铁 - 硼基磁体合金颗粒能量积（（BH）max）不小于13MGOe。这些颗粒的平均主轴向直径为60至500μm，平均次轴径为50至460μm，平均轴比（主轴向直径/次轴径）为1.1至10，平均纵横比（主轴向直径/厚度）为3〜100。磁体合金粒子的残留磁通密度（Br）高达10kG以上，固有矫顽力（iHc）大至不小于3.5kOe，最大能量使用大于13MGOe的产品（（BH）max）用作高性能粘结磁体的材料。

4. 发明授权

US5589199A Apparatus for making environmentally stable reactive alloy powders 失效
标题翻译：用于制造环境稳定的反应性合金粉末的装置
公开(公告)号：US5589199A
公开(公告)日：1996-12-31
申请号：US328115
申请日：1994-10-24
申请人： Iver E. Anderson , Barbara K. Lograsso , Robert L. Terpstra
发明人： Iver E. Anderson , Barbara K. Lograsso , Robert L. Terpstra
IPC分类号： B22F1/00 , B22F1/02 , B22F9/08 , C22C1/04 , H01F1/055 , H01F1/057 , H01F1/06
CPC分类号： B22F9/082 , B22F1/0088 , B22F1/02 , C22C1/0441 , H01F1/0552 , H01F1/0572 , H01F1/0574 , B22F2998/00 , Y10T428/2991
摘要： Apparatus and method for making powder from a metallic melt by atomizing the melt to form droplets and reacting the droplets downstream of the atomizing location with a reactive gas. The droplets are reacted with the gas at a temperature where a solidified exterior surface is formed thereon and where a protective refractory barrier layer (reaction layer) is formed whose penetration into the droplets is limited by the presence of the solidified surface so as to avoid selective reduction of key reactive alloyants needed to achieve desired powder end use properties. The barrier layer protects the reactive powder particles from environmental constituents such as air and water in the liquid or vapor form during subsequent fabrication of the powder to end-use shapes and during use in the intended service environment.
摘要翻译：通过使熔体雾化以形成液滴并使雾化位置下游的液滴与反应性气体反应从金属熔体制造粉末的装置和方法。在其上形成凝固的外表面的温度下，液滴与气体反应，并且形成保护性耐火阻挡层（反应层），其中渗入液滴的渗透被固化表面的存在所限制，以避免选择性减少需要达到所需粉末末端使用性能的关键反应性合金。阻挡层在随后将粉末制成粉末至最终使用形状和使用期间在预期的使用环境中保护反应性粉末颗粒免受诸如空气和水的液体或蒸汽形式的环境成分的影响。

5. 发明授权

US5242508A Method of making permanent magnets 失效
标题翻译：制造永久磁铁的方法
公开(公告)号：US5242508A
公开(公告)日：1993-09-07
申请号：US869897
申请日：1992-04-15
申请人： R. William McCallum , Kevin W. Dennis , Barbara K. Lograsso , Iver E. Anderson
发明人： R. William McCallum , Kevin W. Dennis , Barbara K. Lograsso , Iver E. Anderson
IPC分类号： B22F1/02 , B22F9/08 , H01F1/057
CPC分类号： B22F9/082 , B22F1/02 , H01F1/0572 , H01F1/0574 , H01F1/0576
摘要： A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles wherein a majority of the particles are produced/size classified within a given size fraction (e.g., 5 to 40 microns diameter) exhibiting optimum as-atomized magnetic properties and subjecting the particles to concurrent elevated temperature and elevated isotropic pressure for a time effective to yield a densified, magnetically isotropic magnet compact having enhanced magnetic properties and mechanical properties.
摘要翻译：制造各向同性永磁体的方法包括在条件下使稀土 - 过渡金属合金（例如，富含Nd和B的Nd-Fe-B合金）的熔体雾化以产生保护性涂覆的，快速凝固的，通常为球形的合金颗粒其中大部分颗粒被生产/尺寸分类为显示最佳的雾化磁性能的给定尺寸级分（例如，5至40微米直径），并使颗粒同时升高温度和提高的各向同性压力达到有效产生的时间具有增强的磁特性和机械性能的致密化的磁各向同性磁体。

6. 发明授权

US07547346B2 Metal powder with nano-composite structure and its production method using a self assembling technique 有权
标题翻译：金属粉末纳米复合结构及其制备方法采用自组装技术
公开(公告)号：US07547346B2
公开(公告)日：2009-06-16
申请号：US11369843
申请日：2006-03-08
申请人： Shigenobu Sekine
发明人： Shigenobu Sekine
IPC分类号： B22F9/06
CPC分类号： H01F1/047 , B22F1/0014 , B22F1/0048 , B22F9/008 , B22F9/10 , B22F2009/084 , B22F2009/0844 , B22F2009/086 , B22F2009/0876 , H01F1/0551 , H01F1/0571 , H01F1/0574
摘要： Methods, apparatuses and systems for producing powder particles of extremely small, highly uniform spherical shape and high sphericity, composed of metal including single metals and alloys, including nanocomposite structures, using a self-assembling procedure. The invention further includes the produced spherical particles. The metal spherical particles are produced whereby molten metal, alloys or composites are directed onto a fast-rotating disk in an atmosphere containing one or more inert gases and small amounts of an oxidizing gas and the molten metal drops are dispersed as tiny droplets for a predetermined time using centrifugal force within a cooling-reaction gas, and then cooled rapidly to form solid spherical particles. The spherical particles comprise a crystalline, amorphous or porous composition, having a size of 1-300 μm±1% with a uniformity of size being ≦60-70% and a precise spherical shape of less than or equal to ±10%.
摘要翻译：使用自组装方法制造由包括单一金属和合金在内的金属（包括纳米复合结构）组成的极小，高度均匀的球形和高球形度的粉末颗粒的方法，装置和系统。本发明还包括所生产的球形颗粒。制造金属球形颗粒，其中熔融金属，合金或复合材料在含有一种或多种惰性气体和少量氧化气体的气氛中被引导到快速旋转盘上，并且熔融金属液滴以微小液滴分散在预定的时间在冷却反应气体内使用离心力，然后迅速冷却，形成固体球形颗粒。球形颗粒包含晶体，无定形或多孔组合物，其尺寸为1-300mum±1％，其尺寸均匀度为<= 60-70％，精确的球形形状小于或等于±10％。

7. 发明申请

US20060144188A1 Metal powder with nano-composite structure and its production method using a self assembling technique 有权
公开(公告)号：US20060144188A1
公开(公告)日：2006-07-06
申请号：US11369843
申请日：2006-03-08
申请人： Shigenobu Sekine
发明人： Shigenobu Sekine
IPC分类号： B22F9/10
CPC分类号： H01F1/047 , B22F1/0014 , B22F1/0048 , B22F9/008 , B22F9/10 , B22F2009/084 , B22F2009/0844 , B22F2009/086 , B22F2009/0876 , H01F1/0551 , H01F1/0571 , H01F1/0574
摘要： Methods, apparatuses and systems for producing powder particles of extremely small, highly uniform spherical shape and high sphericity, composed of metal including single metals and alloys, including nanocomposite structures, using a self-assembling procedure. The invention further includes the produced spherical particles. The metal spherical particles are produced whereby molten metal, alloys or composites are directed onto a fast-rotating disk in an atmosphere containing one or more inert gases and small amounts of an oxidizing gas and the molten metal drops are dispersed as tiny droplets for a predetermined time using centrifugal force within a cooling-reaction gas, and then cooled rapidly to form solid spherical particles. The spherical particles comprise a crystalline, amorphous or porous composition, having a size of 1-300 μm±1% with a uniformity of size being ≦60-70% and a precise spherical shape of less than or equal to ±10%.

8. 发明申请

US20050097989A1 Metal powder with nano-composite structure and its production method using a self-assembling technique 审中-公开
标题翻译：金属粉末纳米复合结构及其制备方法采用自组装技术
公开(公告)号：US20050097989A1
公开(公告)日：2005-05-12
申请号：US10964744
申请日：2004-10-15
申请人： Shigenabu Sekine
发明人： Shigenabu Sekine
IPC分类号： B22F1/00 , B22F1/02 , B22F9/00 , B22F9/10 , H01F1/047 , H01F1/055 , H01F1/057 , B22F9/06
CPC分类号： H01F1/047 , B22F1/0014 , B22F1/0048 , B22F9/008 , B22F9/10 , B22F2009/084 , B22F2009/0844 , B22F2009/086 , B22F2009/0876 , H01F1/0551 , H01F1/0571 , H01F1/0574
摘要： Methods, apparatuses and systems for producing powder particles of extremely small, highly uniform spherical shape and high sphericity, composed of metal including single metals and alloys, including nanocomposite structures, using a self-assembling procedure. The invention further includes the produced spherical particles. The metal spherical particles are produced whereby molten metal, alloys or composites are directed onto a fast-rotating disk in an atmosphere containing one or more inert gases and small amounts of an oxidizing gas and the molten metal drops are dispersed as tiny droplets for a predetermined time using centrifugal force within a cooling-reaction gas, and then cooled rapidly to form solid spherical particles. The spherical particles comprise a crystalline, amorphous or porous composition, having a size of 1-300 μm±1% with a uniformity of size being≦60-70% and a precise spherical shape of less than or equal to ±10%.
摘要翻译：使用自组装方法制造由包括单一金属和合金在内的金属（包括纳米复合结构）组成的极小，高度均匀的球形和高球形度的粉末颗粒的方法，装置和系统。本发明还包括所生产的球形颗粒。制造金属球形颗粒，其中熔融金属，合金或复合材料在含有一种或多种惰性气体和少量氧化气体的气氛中被引导到快速旋转盘上，并且熔融金属液滴以微小液滴分散在预定的时间在冷却反应气体内使用离心力，然后迅速冷却，形成固体球形颗粒。球形颗粒包含晶体，无定形或多孔组合物，其尺寸为1-300mum±1％，其尺寸均匀度为<= 60-70％，精确的球形形状小于或等于±10％。

9. 发明申请

US20020112783A1 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：US20020112783A1
公开(公告)日：2002-08-22
申请号：US09952056
申请日：2001-09-14
申请人： SUMITOMO SPECIAL METALS CO., LTD.
发明人： Hiroyuki Tomizawa , Yuji Kaneko
IPC分类号： H01F001/057
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。

10. 发明授权

US5240513A Method of making bonded or sintered permanent magnets 失效
标题翻译：制造粘结或烧结永磁体的方法
公开(公告)号：US5240513A
公开(公告)日：1993-08-31
申请号：US593943
申请日：1990-10-09
申请人： R. William McCallum , Kevin W. Dennis , Barbara K. Lograsso , Iver E. Anderson
发明人： R. William McCallum , Kevin W. Dennis , Barbara K. Lograsso , Iver E. Anderson
IPC分类号： B22F3/00 , B22F1/02 , B22F9/08 , H01F1/057 , H01F1/08 , H01F41/02
CPC分类号： H01F1/0574 , B22F1/02 , H01F1/0572 , H01F1/0577 , H01F1/0578
摘要： An isotropic permanent magnet is made by mixing a thermally responsive, low viscosity binder and atomized rare earth-transition metal (e.g., iron) alloy powder having a carbon-bearing (e.g., graphite) layer thereon that facilitates wetting and bonding of the powder particles by the binder. Prior to mixing with the binder, the atomized alloy powder may be sized or classified to provide a particular particle size fraction having a grain size within a given relatively narrow range. A selected particle size fraction is mixed with the binder and the mixture is molded to a desired complex magnet shape. A molded isotropic permanent magnet is thereby formed. A sintered isotropic permanent magnet can be formed by removing the binder from the molded mixture and thereafter sintering to full density.
摘要翻译：通过混合热响应性低粘度粘合剂和在其上具有含碳（例如石墨）层的雾化稀土过渡金属（例如铁）合金粉末来制备各向同性永磁体，其有利于粉末颗粒的润湿和结合通过粘合剂。在与粘合剂混合之前，可以将雾化合金粉末的尺寸或分级，以提供具有在给定的相对较窄范围内的晶粒尺寸的特定粒度分数。将选定的粒度级分与粘合剂混合，并将混合物模制成所需的复合磁体形状。由此形成各向同性永久磁铁。烧结的各向同性永磁体可以通过从模塑混合物中除去粘合剂，然后烧结成全密度而形成。

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