公开(公告)号：US07736585B2

公开(公告)日：2010-06-15

申请号：US12453376

申请日：2009-05-08

申请人： Shigenobu Sekine

发明人： Shigenobu Sekine

IPC分类号： B29B9/00

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。 球形颗粒包括具有1-300μm±1％尺寸的晶体，无定形或多孔组合物，尺寸均匀度为60-70％，精确球形小于或等于±10％。

公开(公告)号：US20090304834A1

公开(公告)日：2009-12-10

申请号：US12453376

申请日：2009-05-08

申请人： Shigenobu Sekine

发明人： Shigenobu Sekine

IPC分类号： B29B9/00

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％。

公开(公告)号：US5865873A

公开(公告)日：1999-02-02

申请号：US779218

申请日：1997-01-06

申请人： Shigenobu Sekine ,  Hiroji Sato

发明人： Shigenobu Sekine ,  Hiroji Sato

IPC分类号： B22F9/22 ,  B22F1/00 ,  H01F1/057 ,  H01F1/059 ,  H01F1/06

CPC分类号： H01F1/059 ,  B22F1/0007 ,  B22F1/0085 ,  H01F1/0571 ,  H01F1/0578 ,  B22F2999/00

摘要： The present invention is directed to provide a method of preparing a raw material powder for permanent magnets superior in moldability, especially in moldability and productivity of bonded magnets. The method comprises subjecting an acicular iron powder having an aspect ratio of not smaller than 5:1 to heating at 800.degree.-900.degree. C. in fluidized state with a gas stream containing no oxygen until the acicular iron powder is transformed into a columnar shape iron powder having an aspect ratio of not larger than 3:1, a die-like shape iron powder or a spherical shape iron powder. The acicular iron powder may contain or may be attached by such a component effective for improving magnetic properties as a rare earth element metal, a rare earth element metal oxide, boron, cobalt and nickel.

摘要翻译： 本发明的目的在于提供一种制备永久磁铁用原料粉末的方法，该成型性优异，特别是成形性和粘结磁铁的生产率。 该方法包括使长径比不小于5:1的针状铁粉在流化状态下在不含氧的气流中加热至800-900℃，直到针状铁粉转变为柱状 长径比不大于3:1的铁粉，模具状铁粉或球形铁粉。 针状铁粉可以含有或者可以通过这样一种有助于提高作为稀土元素金属，稀土元素金属氧化物，硼，钴和镍的磁性能的组分附着。

公开(公告)号：US6051077A

公开(公告)日：2000-04-18

申请号：US893991

申请日：1997-07-16

申请人： Shigenobu Sekine ,  Hiroji Sato

发明人： Shigenobu Sekine ,  Hiroji Sato

IPC分类号： B22F1/00 ,  H01F1/057

CPC分类号： B82Y25/00 ,  B22F1/0096 ,  H01F1/0577 ,  H01F1/0579

摘要： The present invention is directed to provide a raw material powder for modified permanent magnets capable of enhancing magnetic properties of iron.rare earth element metal.boron permanent magnets and reducing the production cost, and further to provide its production method. The raw material powder is a pulverized powder of sintered mass obtained by sintering in vacuum or in a non-oxidative gas a mixture of an acicular iron powder and an alloy powder containing iron, a rare earth element metal and boron.

摘要翻译： 本发明旨在提供一种能够提高铁土金属硼永磁体的磁性能的改性永磁体用原料粉末，降低生产成本，进一步提供其制造方法。 原料粉末是通过在真空中或非氧化性气体中烧结针状铁粉和含铁，稀土元素金属和硼的合金粉末的混合物而获得的烧结体粉碎粉末。

公开(公告)号：US5942053A

公开(公告)日：1999-08-24

申请号：US089222

申请日：1998-06-03

申请人： Shigenobu Sekine ,  Hiroji Sato ,  Minoru Narita

发明人： Shigenobu Sekine ,  Hiroji Sato ,  Minoru Narita

IPC分类号： C22C38/00 ,  H01F1/053 ,  H01F1/057

CPC分类号： H01F1/0577 ,  H01F1/057

摘要： The object of the invention is to provide a composition for permanent magnet with excellent magnetic properties exhibiting well the latent ability of the RFeB system tetragonal compounds. The composition for permanent magnet according to the present invention is a complex of (1) a crystalline RFeB or RFeCoB system compound having a tetragonal crystal structure with lattice constants of a.sub.o about 8.8 .ANG. and c.sub.o about 12 .ANG., in which R is at least one of rare earth elements, and (2) a crystalline neodymium oxide having a cubic crystal structure, in which both crystal grains are epitaxially connected and the RFeB or RFeCoB crystal grains are oriented to the c.sub.o direction. The lattice constant a.sub.o of the cubic Nd.sub.2 O.sub.3 is about 4.4 .ANG. which is the half length of the lattice constant a.sub.o about 8.8 .ANG. for the RFeB or RFeCoB tetragonal crystal, and the epitaxial connection is achieved, and the RFeB or RFeCoB crystal grains are oriented to the c.sub.o direction.

摘要翻译： 本发明的目的是提供一种具有优异磁性能的永磁体组合物，其表现出良好的RFeB系四正方晶化合物的潜能。 根据本发明的永磁体组合物是（1）具有四方晶系结构的结晶RFeB或RFeCoB体系化合物的复合物，其晶格常数大约为8.8安培和约12安培姆，其中R为至少一个 的稀土元素，和（2）具有立方晶体结构的结晶钕氧化物，其中两个晶粒外延连接，并且RFeB或RFeCoB晶粒取向于共方向。 立方Nd2O3的晶格常数ao为约4.4 ANGSTROM，其为RFeB或RFeCoB四方晶体的晶格常数ao约为8.8Ag的一半长度，并且实现了外延连接，并且RFeB或RFeCoB晶粒取向为 公司方向。