公开(公告)号：US06884513B2

公开(公告)日：2005-04-26

申请号：US09924476

申请日：2001-08-09

申请人： Atsushi Kikugawa ,  Fumiaki Kikui

发明人： Atsushi Kikugawa ,  Fumiaki Kikui

IPC分类号： H01F41/02 ,  B22B15/04 ,  H01F1/053

CPC分类号： H01F41/026 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/31678

摘要： The chemical conversion film containing, at least as the constituent components thereof, (a) at least one of the metals selected from molybdenum, zirconium, vanadium, and tungsten; (b) a rare earth metal constituting the magnet; and (c) oxygen, which is formed on the surface of a rare earth metal-based permanent magnet according to the present invention, contains a composite metal oxide provided on the surface of the R-rich phase having a lower oxidation-reduction potential through a preferential reaction of the metallic ions that are present in the form of complex ions or oxide ions, such as of molybdenum, contained in the treatment solution, with the rare earth metals that elute from the magnet. Thus formed composite metal oxide reduces the difference in corrosion potential as to realize a uniform surface potential, and effectively suppresses the corrosion based on potential difference. Furthermore, the chemical conversion film thus formed exhibits excellent corrosion resistance even if it is provided as a thin film. The production method thereof can be implemented at low cost and by a simple process comprising treating the surface of the magnet by using a treatment solution containing a molybdate and the like.

公开(公告)号：US6120620A

公开(公告)日：2000-09-19

申请号：US248951

申请日：1999-02-12

申请人： Mark Gilbert Benz ,  Juliana Ching Shei

发明人： Mark Gilbert Benz ,  Juliana Ching Shei

IPC分类号： C22C1/04 ,  H01F1/057 ,  H01F1/053

CPC分类号： C22C1/0441 ,  H01F1/0577

摘要： A permanent magnet having substantially stable magnetic properties is disclosed having as the active magnetic component a sintered product of compacted particulate iron-boron-rare earth intermetallic material, said sintered product having pores which are substantially non-interconnecting, a density of at least 87 percent of theoretical and a composition consisting essentially of in atomic percent about 13 to about 19 percent rare earth elements, about 4 to about 20 percent boron and about 61 to about 83 percent of iron with or without impurities; where the rare earth content is greater than 50 percent praseodymium with an effective amount of a light rare earth selected from the group consisting of cerium, lanthanum, yttrium and mixtures thereof, and balance neodymium.

摘要翻译： 公开了一种具有基本上稳定的磁特性的永磁体，其具有作为活性磁性组分的致密颗粒铁 - 硼 - 稀土金属间化合物的烧结产品，所述烧结产品具有基本上非互连的孔，至少87％的密度 的理论和基本上由原子百分比组成的约13至约19％的稀土元素，约4至约20％的硼和约61％至约83％的具有或不含杂质的铁的组合物; 其中稀土含量大于50％的镨，有效量的选自铈，镧，钇及其混合物的轻稀土，余量为钕。

公开(公告)号：US6001193A

公开(公告)日：1999-12-14

申请号：US827322

申请日：1997-03-25

申请人： Akinori Kojima ,  Takao Mizushima ,  Akihiro Makino ,  Akihisa Inoue ,  Tsuyoshi Masumoto

发明人： Akinori Kojima ,  Takao Mizushima ,  Akihiro Makino ,  Akihisa Inoue ,  Tsuyoshi Masumoto

IPC分类号： C22C1/04 ,  C22C45/02 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08 ,  H01F1/03

CPC分类号： B82Y25/00 ,  H01F1/0571 ,  H01F1/0576 ,  H01F1/0579 ,  Y10S977/838

摘要： A method of producing a hard magnetic alloy compact at low cost, in which an alloy that contains not less than 50% by weight of an amorphous phase and exhibits hard magnetism in a crystallized state is solidified and molded at around its crystallization temperature under applied pressure by utilizing the softening phenomenon occurring during a crystallization process. The resulting compact has high hard magnetic characteristics and can be applied as permanent magnet members such as in motors, actuators, and speakers.

摘要翻译： 制造低成本的硬磁性合金成形体的方法，其中含有不少于50重量％的非晶相并且在结晶状态下显示出硬磁性的合金在施加压力下在其结晶温度附近固化和模制 通过利用在结晶过程中发生的软化现象。 所得到的压块具有高的硬磁特性，并且可以用作诸如电动机，致动器和扬声器中的永久磁体部件。

公开(公告)号：US5567891A

公开(公告)日：1996-10-22

申请号：US437719

申请日：1995-05-08

申请人： Jacob G. Bogatin ,  Andrey Belov

发明人： Jacob G. Bogatin ,  Andrey Belov

IPC分类号： C22C1/04 ,  C22C32/00 ,  C22C33/02 ,  C22C38/00 ,  H01F1/053 ,  H01F1/057 ,  H01F41/02 ,  C22C30/00

CPC分类号： C22C32/00 ,  H01F1/0573 ,  H01F1/0577

摘要： A permanent magnet is provided which is comprised of, by atomic percent: 10-24% R; 2-28% boron, 0.1-18.12% hydrogen; and balance being M. R is at least one element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y and Sc, and M is at least one metal selected from Fe, Co, Ni, Li, Be, Mg, Rs, Si, Ti, V, Cr, Mn, Cu, Zn, Ga Ge, Zn, Nb, Mo, Ru, Rh, Pd, Ag, Sb, Te, Hf, Ta, W, Re, Os, Ir, Pt, Au, and Bi. A process for producing the rare earth element-metal-hydrogen boron magnets is also disclosed wherein the magnetic materials are treated in an atmosphere having partial pressures of hydrogen containing gas at temperatures below the phase transformation temperature of the rare earth element-metal hydrides prior to sintering.

摘要翻译： 提供永磁体，其由原子百分比组成：10-24％R; 2-28％硼，0.1-18.12％氢; 余量为M.R为选自La，Ce，Pr，Nd，Pm，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb，Lu，Y和Sc中的至少一种元素，M为 选自Fe，Co，Ni，Li，Be，Mg，Rs，Si，Ti，V，Cr，Mn，Cu，Zn，Ga Ge，Zn，Nb，Mo，Ru，Rh，Pd，Ag ，Sb，Te，Hf，Ta，W，Re，Os，Ir，Pt，Au和Bi。 还公开了一种制备稀土元素 - 金属 - 氢硼磁体的方法，其中在低于稀土元素 - 金属氢化物的相变温度的温度下，在具有含氢气体分压的气氛中处理磁性材料， 烧结。

公开(公告)号：US5472661A

公开(公告)日：1995-12-05

申请号：US357493

申请日：1994-12-16

申请人： David E. Gay

发明人： David E. Gay

IPC分类号： B22F1/00 ,  H01F1/053 ,  H01F1/057 ,  H01F1/26 ,  B22F1/02 ,  B22F3/00

CPC分类号： B22F1/0062 ,  B22F1/0059 ,  B22F1/0096 ,  H01F1/0533 ,  H01F1/0578 ,  H01F1/26 ,  B22F2998/00 ,  Y10T428/12014 ,  Y10T428/12049

摘要： Method of distributing and retaining insoluble additive particles uniformly throughout a mass of moldable metal particles. The additive particles are suspended in a solution of a polymeric binder and spray-coated onto the metal particles. When the solvent evaporates, the additives remain glued to the metal particles by the binder.

摘要翻译： 将不溶性添加剂颗粒均匀地分布和保留在整个可模制金属颗粒群中的方法。 将添加剂颗粒悬浮在聚合物粘合剂的溶液中并喷涂在金属颗粒上。 当溶剂蒸发时，添加剂通过粘合剂保持粘合到金属颗粒上。

公开(公告)号：US5470400A

公开(公告)日：1995-11-28

申请号：US251455

申请日：1994-05-31

申请人： Yakov Bogatin ,  Mark Robinson ,  Frank S. Greenwald ,  John Ormerod

发明人： Yakov Bogatin ,  Mark Robinson ,  Frank S. Greenwald ,  John Ormerod

IPC分类号： B22F1/00 ,  H01F1/053 ,  H01F1/055 ,  H01F1/057 ,  H01F1/059

CPC分类号： B22F1/0088 ,  H01F1/053 ,  H01F1/0552 ,  H01F1/0572 ,  H01F1/0577 ,  H01F1/059

摘要： This invention relates to a process for producing a non-pyrophoric, corrosion resistant rare earth-containing material capable of being formed into a polymer bonded permanent magnet comprising forming particles from a rare earth-containing alloy, and treating the alloy with a passivating gas comprised of nitrogen, carbon dioxide or a combination of nitrogen and carbon dioxide at a temperature below the phase transformation temperature of the alloy, and heat treating the alloy to produce material having a coercivity of at least 1,000 Oersteds. Rare earth-containing alloys suitable for use in producing magnets, such as Nd--Fe--B and Sm--Co alloys, can be used. If nitrogen is used as the passivating gas, the resultant powder particles have a nitrogen surface concentration of from about 0.4 to about 26.8 atomic percent. Moreover, if carbon dioxide is used as the passivating gas, the resultant powder particles have a carbon surface concentration of from about 0.02 to about 15 atomic percent. The particles made in accordance with the present invention are capable of being aligned by a magnetic field to produce an anisotropic polymer bonded permanent magnet.

摘要翻译： 本发明涉及一种生产能够形成聚合物粘结永磁体的非自燃，耐腐蚀的含稀土材料的方法，包括从含稀土合金形成颗粒，并用包含的钝化气体处理该合金 的氮气，二氧化碳或氮和二氧化碳的组合在低于合金的相变温度的温度下进行热处理，并且对该合金进行热处理以制备具有至少1,000奥斯特矫顽力的材料。 可以使用适用于制造磁体的稀土类合金，例如Nd-Fe-B和Sm-Co合金。 如果使用氮作为钝化气体，则所得粉末颗粒的氮表面浓度为约0.4至约26.8原子％。 此外，如果使用二氧化碳作为钝化气体，则所得粉末颗粒的碳表面浓度为约0.02至约15原子％。 根据本发明制备的颗粒能够通过磁场对准以产生各向异性聚合物粘结的永磁体。

公开(公告)号：US5447034A

公开(公告)日：1995-09-05

申请号：US146735

申请日：1993-11-04

申请人： Toru Kuriyama ,  Masahiko Takahashi ,  Hideki Nakagome ,  Akiko Takahashi ,  Yoichi Tokai

发明人： Toru Kuriyama ,  Masahiko Takahashi ,  Hideki Nakagome ,  Akiko Takahashi ,  Yoichi Tokai

IPC分类号： F16J9/06 ,  F25B9/14 ,  F25B9/10 ,  H01F1/053

CPC分类号： F16J9/062 ,  F16J9/06 ,  F25B9/14 ,  F02G2258/10 ,  F05C2225/08 ,  F25B2309/003

摘要： A cryogenic refrigerator includes a first refrigerant filled in a final refrigerating force storage chamber on a high temperature side thereof and consisting essentially of a composition expressed by (a) (Er.sub.(x) R.sub.(1-x)).sub.3 Ni.sub.(y) Co.sub.(1-y), or (b) Er.sub.(x) R.sub.(1-x) Ni.sub.(y) Cu.sub.(1-y) wherein 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1, and R denotes a rare earth element selected from the group consisting of Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb and Sc, a second refrigerant filled in the final refrigerating force storage chamber on a low temperature side thereof and consisting essentially of a composition expressed by (f) Er.sub.(x) R.sub.(1-x) Ni.sub.(y) Co.sub.(1-y), or (g) (Er.sub.(x) R.sub.(1-x)).sub.3 AlC.sub.(y) wherein 0.ltoreq.x.ltoreq.1, 0.ltoreq.y.ltoreq.1 and R represents a rare earth element selected from the group consisting of Y, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Tm, Yb and Sc, and a partition member for separating the second refrigerant from the first one so as to not be mixed in the refrigerating force storage chamber.

摘要翻译： 低温冰箱包括填充在其高温侧的最终制冷力储存室中的第一制冷剂，其基本上由（a）（Er（x）R（1-x））3 Ni（y）Co 1-y）或（b）Er（x）R（1-x）Ni（y）Cu（1-y）其中0≤x≤1,0≤y≤1， R表示选自Y，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Tm，Yb和Sc的稀土元素，填充在最终制冷力储存室中的第二制冷剂 基本上由（f）Er（x）R（1-x）Ni（y）Co（1-y）或（g）（Er（x）R（1-x））表示的组成 ））3AlC（y）其中0≤x≤1,0≤y≤1，R表示选自Y，Pr，Nd，Sm，Eu，Gd的稀土元素 ，Tb，Dy，Ho，Tm，Yb和Sc，以及用于将第一制冷剂与第一制冷剂分离的分隔构件，以便不在冷藏力贮存室中混合。

公开(公告)号：US5417773A

公开(公告)日：1995-05-23

申请号：US319465

申请日：1994-10-06

申请人： Ryoji Nakayama ,  Takuo Takeshita ,  Yoshinari Ishii ,  Tamotsu Ogawa

发明人： Ryoji Nakayama ,  Takuo Takeshita ,  Yoshinari Ishii ,  Tamotsu Ogawa

IPC分类号： B22F1/00 ,  B22F9/02 ,  B22F9/04 ,  C22C33/02 ,  C22C38/00 ,  H01F1/053 ,  H01F1/057 ,  H01F1/06

CPC分类号： H01F1/0573 ,  B22F9/023

摘要： The present invention provides a method for producing a rare earth alloy magnet powder exhibiting stable and superior magnetic properties using hydrogenation followed by dehydrogenation. In a method for producing a rare earth alloy magnet powder wherein a homogenized rare earth alloy magnet alloy material is subjected to hydrogenation at a temperature in a range between 750.degree. C. and 950.degree. C., followed by dehydrogenation at a temperature in a range between 750.degree. C. and 950.degree. C.; cooled; and crushed, both the hydrogenation and the dehydrogenation are carried out in a vacuum tube furnace; and the alloy material in the dehydrogenation step maintains a temperature drop of at most 50.degree. C. due to an endothermic reaction which occurs during the dehydrogenation step.

摘要翻译： 本发明提供一种稀土合金磁粉的制造方法，其特征在于，使用氢化脱氢后表现出稳定而优异的磁性能。 在稀土合金磁铁粉末的制造方法中，在750〜950℃的温度范围内使均质化的稀土类合金磁铁合金材料进行氢化，然后在一定范围的温度下脱氢 在750℃和950℃之间。 冷却 粉碎，氢化和脱氢均在真空管式炉中进行; 并且脱氢步骤中的合金材料由于在脱氢步骤期间发生的吸热反应而保持至多50℃的温度下降。

公开(公告)号：US5382303A

公开(公告)日：1995-01-17

申请号：US868030

申请日：1992-04-13

申请人： Richard L. Anderson ,  Fred G. Jones

发明人： Richard L. Anderson ,  Fred G. Jones

IPC分类号： B22F3/10 ,  H01F1/055 ,  H01F1/053

CPC分类号： H01F1/0557 ,  B22F3/1017 ,  B22F2009/041 ,  B22F2998/10

摘要： Novel permanent magnets of Sm.sub.2 Co.sub.17 type crystal structure are provided herein. The magnets preferably have samarium, cobalt, iron, copper and zirconium in specified amounts. They have superior magnetic properties, including maximum energy product, intrinsic coercivity and second quadrant loop squareness. The compositions of the magnets can be expressed by a general formula [Co.sub.a Fe.sub.b Cu.sub.c Zr.sub.d ].sub.e Sm. Preferred embodiments, wherein a is about 0.6 to about 0.7, b is about 0.2 to about 0.3, c is about 0.06 to about 0.07, d is about 0.02 to about 0.03, and e is about 7.2 to about 7.4, have unexpectedly high maximum energy product, high intrinsic coercive force and squareness. Processes for producing the improved alloy are also provided.

摘要翻译： 本文提供了Sm2Co17型晶体结构的新型永磁体。 磁体优选具有规定量的钐，钴，铁，铜和锆。 它们具有优异的磁性能，包括最大能量乘积，固有矫顽力和第二象限环矩形度。 磁体的组成可以由通式[Coa Feb Cuc Zrd] e Sm表示。 优选的实施方案，其中a为约0.6至约0.7，b为约0.2至约0.3，c为约0.06至约0.07，d为约0.02至约0.03，e为约7.2至约7.4，具有出乎意料的高的最大能量 产品，高内在矫顽力和矩形度。 还提供了用于生产改进的合金的方法。

公开(公告)号：US5356489A

公开(公告)日：1994-10-18

申请号：US777547

申请日：1991-12-12

申请人： Jean P. Nozieres ,  Rene P. De La Bathie ,  Marc Lelievre

发明人： Jean P. Nozieres ,  Rene P. De La Bathie ,  Marc Lelievre

IPC分类号： C22C33/02 ,  B22F3/14 ,  B22F3/15 ,  C21D6/00 ,  C21D8/12 ,  H01F1/053 ,  H01F1/057 ,  H01F1/02

CPC分类号： H01F1/0576

摘要： The present invention is a process for the preparation of copper-neodymium-iron-boron permanent magnets. The process comprises forging a cast bulk copper-neodymium-iron-boron alloy in a temperature range in which the alloy exists in two phases, a first solid phase and a second liquid phase.

摘要翻译： PCT No.PCT / FR90 / 00452 Sec。 371日期1991年12月12日 102（e）日期1991年12月12日PCT Filed 1990年6月21日PCT公布。 出版物WO91 / 00602 日本1991年1月10日。本发明是一种制备铜 - 钕 - 铁 - 硼永磁体的方法。 该方法包括在合金存在于两相的温度范围内锻制铸造体铜 - 钕 - 铁 - 硼合金，第一固相和第二液相。