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1. 发明申请

US20060278517A1 Minute high-performance rare earth magnet for micromini product and process for producing the same 失效
标题翻译：微型高性能稀土磁体用于微型产品及其制造方法
公开(公告)号：US20060278517A1
公开(公告)日：2006-12-14
申请号：US10551432
申请日：2004-03-04
申请人： Kenichi Machida , Shunji Suzuki , Eiji Sakaguchi , Naoyuki Ishigaki
发明人： Kenichi Machida , Shunji Suzuki , Eiji Sakaguchi , Naoyuki Ishigaki
IPC分类号： C23C16/00 , B05D7/00 , H05H1/24
CPC分类号： H01F1/0577 , C23C14/3464 , C23C14/3471 , H01F1/057 , H01F41/0253 , H01F41/0293
摘要： A method of manufacturing a rare earth permanent magnet comprises the steps of: forming a rare earth magnet by applying mechanical processing to a magnet block material, thereby damaging the surface of the magnet and causing a magnetic characteristic (BH)max of the magnet to deteriorate, followed by transforming a rare earth metal or an alloy thereof into fine particles or a vapor, and allowing the fine particles or vapor to diffuse and permeate the magnet, thereby improving the quality of the damaged magnet surface portion so that the magnetic characteristic (BH)max is recovered.
摘要翻译：一种制造稀土永磁体的方法包括以下步骤：通过对磁体块材料进行机械加工来形成稀土磁体，从而损坏磁体的表面并产生磁特性（BH） SUB>劣化，然后将稀土金属或其合金转变成细颗粒或蒸汽，并使微粒或蒸汽扩散并渗透到磁体中，从而提高损坏的磁体表面部分的质量使得磁特性（BH）最大值被恢复。

2. 发明授权

US06491765B2 Rare earth magnet and method for manufacturing the same 有权
公开(公告)号：US06491765B2
公开(公告)日：2002-12-10
申请号：US09851423
申请日：2001-05-09
申请人： Katsumi Okayama , Naoyuki Ishigaki , Shuhei Okumura
发明人： Katsumi Okayama , Naoyuki Ishigaki , Shuhei Okumura
IPC分类号： H01F1057
CPC分类号： B82Y25/00 , H01F1/0573 , H01F1/0577 , H01F1/0579
摘要： The method for manufacturing alloy powder for R—Fe—B type rare earth magnets of the present invention includes a first pulverization step of coarsely pulverizing a material alloy for rare earth magnets and a second pulverization step of finely pulverizing the material alloy. In the first pulverization step, the material alloy is pulverized by a hydrogen pulverization method. In the second pulverization step, easily oxidized super-fine powder (particle size: 1.0 &mgr;m or less) is removed to adjust the particle quantity of the super-fine powder to 10% or less of the particle quantity of the entire powder.

3. 发明授权

US06221270B1 Process for producing compound for rare earth metal resin-bonded magnet 有权
标题翻译：稀土金属树脂粘结磁体用化合物的制造方法
公开(公告)号：US06221270B1
公开(公告)日：2001-04-24
申请号：US09335829
申请日：1999-06-18
申请人： Katsuyoshi Saito , Yasunari Kaneko , Naoyuki Ishigaki , Shin Mishima , Shinji Otsuki , Yoshihiko Nishino
发明人： Katsuyoshi Saito , Yasunari Kaneko , Naoyuki Ishigaki , Shin Mishima , Shinji Otsuki , Yoshihiko Nishino
IPC分类号： B22F100
CPC分类号： H01F1/0558 , B22F1/0059 , B22F9/026 , H01F1/0578 , H01F1/059
摘要： A process for producing a compound for a rare earth metal resin-bonded magnet includes: a slurry preparation step of mixing materials containing a magnetic alloy powder of a rare earth metal alloy, a resin binder, and an organic solvent into a slurry; and a drying step of spraying and drying the slurry by means of a spray dryer apparatus to produce the compound containing the magnetic alloy powder of the rare earth metal alloy and the resin binder.
摘要翻译：制备稀土金属树脂粘结磁体用化合物的方法包括：将含有稀土金属合金的磁性合金粉末，树脂粘合剂和有机溶剂的材料混合成浆料的浆料制备工序; 以及通过喷雾干燥装置喷雾和干燥浆料以制备含有稀土金属合金和树脂粘合剂的磁性合金粉末的化合物的干燥步骤。

4. 发明授权

US5666635A Fabrication methods for R-Fe-B permanent magnets 失效
标题翻译： R-Fe-B永磁体的制造方法
公开(公告)号：US5666635A
公开(公告)日：1997-09-09
申请号：US523928
申请日：1995-09-06
申请人： Yuji Kaneko , Naoyuki Ishigaki
发明人： Yuji Kaneko , Naoyuki Ishigaki
IPC分类号： B22F3/12 , B22F3/00 , H01F1/057 , H01F1/08 , H01F41/00 , B22F1/00
CPC分类号： B22F3/004 , H01F1/0577 , B22F2999/00
摘要： This invention, using finely ground powders obtained by either a ingot grinding method, a Ca reduction diffusion method or a strip casting method, proposes a fabrication method for high-performance R--Fe--B permanent magnets with excellent press packing characteristics, a high degree of orientation of the magnetization direction of each crystallite and a total sum of A, (BH)max (MGOe) and B, iHc (kOe), A+B greater than 59.5. Here, cast alloys or ground alloys are coarse ground by mechanical grinding or by a H.sub.2 absorption and decomposition method, and then fine ground by either mechanical grinding or by a jet mill grinding process to yield R--Fe--B fine powders with an average particle size of 1.0 .mu.m.about.10 .mu.m. These powders are then packed into a mold at a packing density of 1.4.about.3.5 g/cm.sup.3, a pulsed magnetic field with a field intensity greater than 10 kOe is applied so as to repeatedly invert the magnetization direction, and finally cold isostatic pressing is performed in a static magnetic field.
摘要翻译：本发明使用通过锭磨法，Ca还原扩散法或带铸造法获得的细磨粉末，提出了一种高性能R-Fe-B永磁体的制造方法，其具有优异的压制包装特性，高度每个微晶的磁化方向的取向和A，（BH）max（MGOe）和B，iHc（kOe），A + B的总和大于59.5。这里，铸造合金或地面合金通过机械研磨或H2吸收分解法粗磨，然后通过机械研磨或喷射磨研磨法精细研磨，得到具有平均粒子的R-Fe-B细粉尺寸为1.0亩，差异为10亩。然后将这些粉末以1.4DIFFERENCE 3.5g / cm 3的填充密度包装在模具中，施加场强大于10kOe的脉冲磁场，以反复反转磁化方向，最后进行冷等静压在静态磁场中。

5. 发明授权

US5527504A Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets 失效
标题翻译：用于压实生产稀土铁烧结永磁体的粉末混合物
公开(公告)号：US5527504A
公开(公告)日：1996-06-18
申请号：US437373
申请日：1995-05-09
申请人： Yoshihisa Kishimoto , Nobushige Hiraishi , Wataru Takahashi , Masakazu Ohkita , Naoyuki Ishigaki , Yutaka Matsuura
发明人： Yoshihisa Kishimoto , Nobushige Hiraishi , Wataru Takahashi , Masakazu Ohkita , Naoyuki Ishigaki , Yutaka Matsuura
IPC分类号： C22C1/04 , H01F1/057 , B22F3/12
CPC分类号： H01F1/0577 , C22C1/0441 , Y10T428/2991
摘要： To a fine R-Fe-B alloy powder comprised predominantly of 10-30 atomic % of R (wherein R stands for at least one elements selected from rare earth elements including yttrium), 2-28 atomic % of B, and 65-82 atomic % of Fe in which up to 50 atomic % of Fe may be replaced by Co, at least one boric acid ester compound such as tributyl borate is added as a lubricant in a proportion of 0.01%-2% by weight and mixed uniformly before, during, or after fine grinding of the alloy powder. The resulting powder mixture is compacted by compression molding in a magnetic field and the green compacts are sintered and aged. Compression molding can be performed continuously without need of mold lubrication, and the resulting magnets have improved magnet properties with respect to residual flux density, maximum energy product, and intrinsic coercive force.
摘要翻译：对于主要由10-30原子％的R（其中R代表选自包括钇在内的稀土元素中的至少一种元素），2-28原子％的B和65-82的细R-Fe-B合金粉末其中至多50原子％的Fe可被Co替代的Fe的原子％，至少一种硼酸酯化合物如硼酸三丁酯作为润滑剂以0.01重量％-2重量％的比例加入，并在，在合金粉末的精细研磨期间或之后。所得粉末混合物通过在磁场中的压缩成型而压实，并将生坯压坯烧结和老化。压缩成型可以连续进行而不需要模具润滑，并且所得到的磁体相对于剩余磁通密度，最大能量积和固有矫顽力具有改进的磁体性质。

6. 发明授权

US4769063A Method for producing rare earth alloy 失效
标题翻译：稀土合金的制造方法
公开(公告)号：US4769063A
公开(公告)日：1988-09-06
申请号：US832890
申请日：1986-02-26
申请人： Naoyuki Ishigaki , Takaki Hamada , Setsuo Fujimura
发明人： Naoyuki Ishigaki , Takaki Hamada , Setsuo Fujimura
IPC分类号： B22F9/20 , C22B5/04 , C22B59/00 , C22C1/04 , H01F1/057 , H01F1/06
CPC分类号： H01F1/0577 , B22F9/20 , C22B5/04 , C22B59/00 , C22C1/0441 , H01F1/0573 , H01F1/06
摘要： A rare earth alloy for producing permanent magnet comprised of: 15-65 atomic % R.sub.1, 35-83 atomic % Fe, and 0-15 atomic % B, where R.sub.1 represents at least one of heavy rare earth elements Gd, Tb, Dy, Ho, Er, Tm and Yb. This alloy is produced by reducing a mixture of correspoding rare earth oxides, Fe, and a boron containing material by Ca, contacting the reduced mass with water, and treating the resultant slurry with water. Using this alloy, Fe-B-R base magnets wherein R.sub.1 is substituted for part of R (R representing lanthanide and/or Y) having a high performance are produced with a reduced cost.
摘要翻译：一种用于制造永磁体的稀土合金，包括：15-65原子％的R1，35-83原子％的Fe和0-15原子％的B，其中R1表示重稀土元素Gd，Tb，Dy， Ho，Er，Tm和Yb。该合金是通过将还原体与水接触的方法，通过还原与对应的稀土氧化物Fe和含硼材料的混合物来制备的，并用水处理得到的浆料。使用该合金，以降低成本制造其中R1代替具有高性能的部分R（R代表镧系元素和/或Y）的Fe-B-R基础磁体。

7. 发明授权

US07402226B2 Minute high-performance rare earth magnet for micromini product and process for producing the same 失效
标题翻译：微型高性能稀土磁体用于微型产品及其制造方法
公开(公告)号：US07402226B2
公开(公告)日：2008-07-22
申请号：US10551432
申请日：2004-03-04
申请人： Kenichi Machida , Shunji Suzuki , Eiji Sakaguchi , Naoyuki Ishigaki
发明人： Kenichi Machida , Shunji Suzuki , Eiji Sakaguchi , Naoyuki Ishigaki
IPC分类号： C23C14/34
CPC分类号： H01F1/0577 , C23C14/3464 , C23C14/3471 , H01F1/057 , H01F41/0253 , H01F41/0293
摘要： A method of manufacturing a rare earth permanent magnet comprises the steps of: forming a rare earth magnet by applying mechanical processing to a magnet block material, thereby damaging the surface of the magnet and causing a magnetic characteristic (BH)max of the magnet to deteriorate, followed by transforming a rare earth metal or an alloy thereof into fine particles or a vapor, and allowing the fine particles or vapor to diffuse and permeate the magnet, thereby improving the quality of the damaged magnet surface portion so that the magnetic characteristic (BH)max is recovered.
摘要翻译：一种制造稀土永磁体的方法包括以下步骤：通过对磁体块材料进行机械加工来形成稀土磁体，从而损坏磁体的表面并使磁体的磁特性（BH）最大值劣化然后将稀土金属或其合金转变为细颗粒或蒸汽，并使微粒或蒸汽扩散并渗透到磁体中，从而提高损坏的磁体表面部分的质量，使得磁特性（BH ）max被恢复。

8. 发明授权

US5486224A Powder mixture for use in compaction to produce rare earth iron sintered permanent magnets 失效
标题翻译：用于压实生产稀土铁烧结永磁体的粉末混合物
公开(公告)号：US5486224A
公开(公告)日：1996-01-23
申请号：US364315
申请日：1994-12-27
申请人： Yoshihisa Kishimoto , Nobushige Hiraishi , Wataru Takahashi , Masakazu Ohkita , Naoyuki Ishigaki , Yutaka Matsuura
发明人： Yoshihisa Kishimoto , Nobushige Hiraishi , Wataru Takahashi , Masakazu Ohkita , Naoyuki Ishigaki , Yutaka Matsuura
IPC分类号： C22C1/04 , H01F1/057 , B22F1/00
CPC分类号： H01F1/0577 , C22C1/0441 , Y10T428/2991
摘要： To a fine R--Fe--B alloy powder comprised predominantly of 10-30 atomic % of R (wherein R stands for at least one element selected from rare earth elements including yttrium), 2-28 atomic % of B, and 65-82 atomic % of Fe in which up to 50 atomic % of Fe may be replaced by Co, at least one boric acid ester compound such as tributyl borate is added as a lubricant in a proportion of 0.01%-2% by weight and mixed uniformly before, during, or after fine grinding of the alloy powder. The resulting powder mixture is compacted by compression molding in a magnetic field and the green compacts are sintered and aged. Compression molding can be performed continuously without need of mold lubrication, and the resulting magnets have improved magnet properties with respect to residual flux density, maximum energy product, and intrinsic coercive force.
摘要翻译：对于主要由10-30原子％的R（其中R表示选自包括钇的稀土元素中的至少一种元素），B-28的2-28原子％和65-82的细R-Fe-B合金粉末其中至多50原子％的Fe可被Co替代的Fe的原子％，至少一种硼酸酯化合物如硼酸三丁酯作为润滑剂以0.01重量％-2重量％的比例加入并在，在合金粉末的精细研磨期间或之后。所得粉末混合物通过在磁场中的压缩成型而压实，并将生坯压坯烧结和老化。压缩成型可以连续进行而不需要模具润滑，并且所得到的磁体相对于剩余磁通密度，最大能量积和固有矫顽力具有改进的磁体性质。

9. 发明授权

US4767450A Process for producing the rare earth alloy powders 失效
标题翻译：稀土合金粉末的制造方法
公开(公告)号：US4767450A
公开(公告)日：1988-08-30
申请号：US801321
申请日：1985-11-25
申请人： Naoyuki Ishigaki , Takaki Hamada , Setsuo Fujimura
发明人： Naoyuki Ishigaki , Takaki Hamada , Setsuo Fujimura
IPC分类号： B22F9/20 , C22B5/04 , C22B59/00 , C22C1/04 , C22C38/00 , H01F1/04 , H01F1/053 , H01F1/057
CPC分类号： B22F9/20 , C22B5/04 , C22B59/00 , C22C1/0441 , C22C38/00 , H01F1/0571 , H01F1/0573
摘要： A rare earth-iron-boron alloy powder which consists essentially of:12.5 to 20 at % R wherein R.sub.1 is 0.05 to 5 at %, 4 to 20 at % B, and 60 to 83.5 at % Fe,wherein R.sub.1 is at least one heavy rare earth element selected from the group consisting of Gd, Tb, Dy, Ho, Er, Tm, and Yb, 80 to 100 at % of R.sub.2 consists of Nd and/or Pr, the balance in the R.sub.2 being at least one element selected from the group consisting of rare earth elements including Y and except for R.sub.1, and R=R.sub.1 +R.sub.2 by atomic %, wherein a major phase of at least 80 vol % of the entire alloy coinsists of a tetragonal structure, and wherein oxygen does not exceed 10,000 ppm, carbon does not exceed 1000 ppm and calcium does not exceed 2000 ppm. The alloy powder is produced by directly reducing a mixture comprising rare earth oxide, iron and other ingredients or oxide thereof with a reducing agent Ca and CaCl.sub.2, putting the reduced product into water, then treating with water. Up to 35 at % Co may be substituted for Fe.
摘要翻译：一种稀土 - 铁 - 硼合金粉末，其基本上由以下组成：12.5至20原子％的R，其中R1为0.05至5原子％，4至20原子％的B和60至83.5原子％的Fe，其中R1为至少一个从Gd，Tb，Dy，Ho，Er，Tm和Yb中选出的重稀土元素为80〜100at％的R2由Nd和/或Pr组成，R2中的余量为至少一种元素选自由包括Y的稀土元素和除R1之外的R-R1 + R2的稀土元素组成的组，其中，四方结构的整个合金硬币的至少80体积％的主相，其中氧不超过10000ppm，碳不超过1000ppm，钙不超过2000ppm。合金粉末通过将还原剂Ca和CaCl 2直接还原包含稀土氧化物，铁和其它成分或其氧化物的混合物，将还原产物放入水中，然后用水处理来制备。高达35at％的Co可以代替Fe。

10. 发明授权

US06537385B2 Rare earth magnet and method for manufacturing the same 有权
公开(公告)号：US06537385B2
公开(公告)日：2003-03-25
申请号：US10190733
申请日：2002-07-09
申请人： Katsumi Okayama , Naoyuki Ishigaki , Shuhei Okumura
发明人： Katsumi Okayama , Naoyuki Ishigaki , Shuhei Okumura
IPC分类号： H01F1057
CPC分类号： B82Y25/00 , H01F1/0573 , H01F1/0577 , H01F1/0579
摘要： The method for manufacturing alloy powder for R—Fe—B type rare earth magnets of the present invention includes a first pulverization step of coarsely pulverizing a material alloy for rare earth magnets and a second pulverization step of finely pulverizing the material alloy. In the first pulverization step, the material alloy is pulverized by a hydrogen pulverization method. In the second pulverization step, easily oxidized super-fine powder (particle size: 1.0 &mgr;m or less) is removed to adjust the particle quantity of the super-fine powder to 10% or less of the particle quantity of the entire powder.

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