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1. 发明专利

JP2004265907A Hard magnetic composition 审中-公开
公开(公告)号：JP2004265907A
公开(公告)日：2004-09-24
申请号：JP2003019446
申请日：2003-01-28
申请人： Tdk Corp , Tdk株式会社
发明人： SAKAMOTO TOKUJI , NAKANE MAKOTO , NAKAMURA HIDEKI , FUKUNO AKIRA
IPC分类号： C22C38/00 , H01F1/04 , H01F1/053 , H01F1/058 , H01F1/059
CPC分类号： H01F1/0593 , H01F1/058
摘要： PROBLEM TO BE SOLVED: To provide a hard magnetic composition which is capable of easily producing a ThMn 12 phase even if Nd is used as a rare earth element. SOLUTION: The hard magnetic composition is represented by formula, R(Fe 100-y-w Co w Ti y ) x Si z A v (wherein, R denotes one or more rare earth elements containing Y, and 50 mol% or above of R is Nd; and A is N and/or C), and the mol ratios of the component elements in the formula are as follows: x is 10 to 12.5, y is (8.3-1.7×z) to 12, z is 0.2 to 2.3, v is 0.1 to 3, and w is 0 to 30, and (the sum of mol ratios of Fe, Co, Ti, and Si)/(mol ratio of R) is so set as to be above 12, whereby a single-phase structure having a ThMn 12 phase can be obtained. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2010226036A Method of manufacturing r-fe-b-based rare earth sintered magnet 审中-公开
标题翻译：制造基于R-FE-B的稀土烧结磁体的方法
公开(公告)号：JP2010226036A
公开(公告)日：2010-10-07
申请号：JP2009074425
申请日：2009-03-25
申请人： Tdk Corp , Tdk株式会社
发明人： KUNIYOSHI YOICHI , SAKAMOTO TOKUJI , KURAHASHI TAKAHIDE , MARO HITOSHI
IPC分类号： H01F41/02 , B22F1/00 , B22F3/02 , B22F3/22 , C22C33/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing an R-Fe-B-based rare earth sintered magnet that can sufficiently reduce variance in mass and defects in outward appearance (fracture, chip, crack, etc.). SOLUTION: The method of manufacturing the R-Fe-B-based rare earth sintered magnet includes a slurry preparing process of preparing slurry by mixing magnetic powder containing a rare earth element with higher alcohol, a molding process of forming a molding by subjecting the slurry to wet molding in a magnetic field, and a baking process of manufacturing the rare earth sintered magnet by baking the molding. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供可以充分减少质量变化和外观缺陷（断裂，芯片，裂纹等）的R-Fe-B系稀土类烧结磁体的制造方法。解决方案：制备R-Fe-B系稀土烧结磁体的方法包括：通过将含有稀土元素的磁性粉末与高级醇混合来制备浆料的浆料制备方法，通过使该浆料在磁场中进行湿式成型，以及通过烘焙成型制造稀土类烧结磁体的烘烤工序。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2006310786A Process for producing rare earth permanent magnet and method for mixing material powder and lubricant 有权
标题翻译：生产稀土永磁体的方法和混合材料粉末和润滑剂的方法
公开(公告)号：JP2006310786A
公开(公告)日：2006-11-09
申请号：JP2006063254
申请日：2006-03-08
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , NISHIZAWA KOICHI , SAKAMOTO TOKUJI
IPC分类号： H01F41/02 , B22F9/04 , C22C33/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a process for producing a rare earth permanent magnet in which even a smaller quantity of lubricant added can exhibit the effect as a lubricant sufficiently.
SOLUTION: The process for producing an R-T-B (R: one kind or more than one kind of rare earth elements, T: Co and/or Fe, B: boron) based rare earth permanent magnet comprises a step for pulverizing a material alloy roughly, a step for adding lubricant to roughly pulverized powder produced in the rough pulverization step, a step for pulverizing the roughly pulverized powder added with lubricant finely, a step for stirring the mixture of finely pulverized powder and lubricant produced in the fine pulverization step in a temperature zone between 30°C and melting point of the lubricant, a step for shaping the finely pulverized powder passed through the mixing step in a magnetic field, and a step for sintering the compact obtained in the shaping step.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供稀土永磁体的制造方法，即使添加的少量润滑剂也能充分发挥作为润滑剂的效果。解决方案：用于生产RTB（R：一种或多于一种稀土元素，T：Co和/或Fe，B：硼）的稀土永磁体的方法包括用于粉碎材料的步骤合金粗大化的步骤，在粗粉碎工序中生产的粗粉碎粉末中添加润滑剂的步骤，将微细粉碎的粉碎粉末和细粉碎工序中产生的润滑剂进行搅拌的步骤，在30℃与润滑剂的熔点之间的温度区域中，在磁场中使通过混合步骤的细粉碎粉末成形的步骤和用于烧结在成形步骤中获得的压块的步骤。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2005283268A Powder evaluation method, rare earth sintered magnet, and manufacturing method thereof 审中-公开
标题翻译：粉末评价方法，稀土烧结磁体及其制造方法
公开(公告)号：JP2005283268A
公开(公告)日：2005-10-13
申请号：JP2004096357
申请日：2004-03-29
申请人： Tdk Corp , Tdk株式会社
发明人： SAKAMOTO TOKUJI , IWASAKI MAKOTO , ISHIZAKA TSUTOMU
IPC分类号： G01N9/36 , H01F1/053 , H01F1/08 , H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a powder evaluation method for accurately evaluating powder to the occurrence of cracks and chips in a forming body for forming the powder. SOLUTION: The powder evaluation method is used to evaluate pulverized powder. Tapping density is measured for a different number of tapping times, and the powder is evaluated on the basis of the ratio of the tapping density. When for example the tapping density if the tapping count is small is set to be tapping density A, and when the tapping density if the tapping count is large is set to be tapping density B, powder is evaluated by the tapping density A/tapping density B. The powder is rare earth alloy powder, for example, used for manufacturing a rare-earth sintered magnet. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种粉末评估方法，用于在粉末形成用成型体中精确评价粉末的裂纹和碎屑的发生。
解决方案：粉末评价方法用于评价粉碎粉末。对于不同数量的攻丝时间测量攻丝密度，并且基于攻牙密度的比率来评估粉末。例如，如果攻丝数量小的攻丝密度设定为攻牙密度A，当攻丝强度大的攻丝密度设定为攻丝密度B时，粉碎物的攻牙密度A /攻牙密度 B.粉末是稀土类合金粉末，例如用于制造稀土类烧结磁体。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2009206511A Method of manufacturing rear earth sintered magnet 有权
标题翻译：制造后置烧结磁铁的方法
公开(公告)号：JP2009206511A
公开(公告)日：2009-09-10
申请号：JP2009018572
申请日：2009-01-29
申请人： Tdk Corp , Tdk株式会社
发明人： KURAHASHI TAKAHIDE , SASAKI HIDEKI , MARO HITOSHI , SAKAMOTO TOKUJI , OTSUKA KIWA , KUNIYOSHI YOICHI
IPC分类号： H01F41/02
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a rare earth sintered magnet, enhancing a residual magnetic flux density, and improving a removability of solvent in wet press forming, to improve productivity and economic efficiency. SOLUTION: The method of manufacturing a rare earth sintered magnet includes steps of: feeding slurry which includes rare earth magnetic powder and solvent, into a cavity of a forming machine and applying a static magnetic field to the slurry in a cavity in a first direction (a first step of applying a static magnetic field S14a); and applying a static magnetic field in a second direction differing from the first direction (a second step of applying a static magnetic field S14b), and then pressure-forming the slurry under the state of applying a constant static magnetic field (a step of wet forming S14). COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：为了提供稀土烧结磁体的制造方法，提高残留磁通密度，提高湿式成形时的溶剂的除去性，提高生产率和经济性。解决方案：制造稀土烧结磁体的方法包括以下步骤：将包含稀土磁性粉末和溶剂的浆料进料到成形机的空腔中，并将静态磁场施加到空腔中的浆料中第一方向（施加静磁场S14a的第一步骤）; 并且在与第一方向不同的第二方向施加静磁场（施加静磁场S14b的第二步骤），然后在施加恒定静磁场的状态下（湿度步骤）对浆料进行加压成形形成S14）。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2008243982A Method of manufacturing metal magnet 审中-公开
标题翻译：制造金属磁铁的方法
公开(公告)号：JP2008243982A
公开(公告)日：2008-10-09
申请号：JP2007079853
申请日：2007-03-26
申请人： Tdk Corp , Tdk株式会社
发明人： OTSUKA KIWA , SAKAMOTO TOKUJI , IRIE SHUICHIRO
IPC分类号： H01F41/02 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing a metal magnet wherein a metal magnet is manufactured by wet forming using an organic solvent and thereby a metal magnet having little degradation in magnetic characteristics can be obtained. SOLUTION: The method of manufacturing a magnet in a preferred embodiment of the present invention includes: a mixing process wherein a material powder of the metal magnet and a lubricant comprising a chemical having a carboxyl group, hydroxyl group, or ester group are mixed and churned; a slurry manufacturing process wherein the material powder after mixed with the lubricant and an organic solvent are mixed to obtain a slurry; a forming process wherein the slurry is formed into an formed object; and a burning process of burning the formed object. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种金属磁体的制造方法，其中通过使用有机溶剂的湿法成型制造金属磁体，从而可以获得几乎没有磁特性劣化的金属磁体。解决方案：在本发明的优选实施方案中，制造磁体的方法包括：混合过程，其中金属磁体的材料粉末和包含具有羧基，羟基或酯基的化学物质的润滑剂是混合搅拌浆料制造方法，其中将与润滑剂和有机溶剂混合的材料粉末混合以获得浆料; 成型工艺，其中浆料形成成形物; 以及燃烧形成的物体的燃烧过程。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2007234953A Lubricant removing method, and rare earth sintered magnet manufacturing method 有权
标题翻译：润滑剂去除方法和稀土烧结磁体制造方法
公开(公告)号：JP2007234953A
公开(公告)日：2007-09-13
申请号：JP2006056221
申请日：2006-03-02
申请人： Tdk Corp , Tdk株式会社
发明人： IRIE SHUICHIRO , SAKAMOTO TOKUJI , IWASAKI MAKOTO
IPC分类号： H01F41/02 , B22F3/02 , B22F3/10 , C22C33/02 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a lubricant removing method which efficiently removes a lubricant from a molded matter, and can obtain a high magnetic characteristic, while controlling a deformation after sintering and an occurrence of a crack; and to provide a rare earth sintered magnet manufacturing method. SOLUTION: After a composition which contains a lubricant composed of an organic substance as a component and an alloy powder having a predetermined constitution, and is press-formed in a magnetic field to obtain a molded matter; the lubricant is removed from the molded matter by making a heat treatment for the molded matter at a temperature area lower than the boil or resolving temperature of the lubricant, in an atmosphere gas containing hydrogen (H 2 ) at least in a part of the process. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种润滑剂去除方法，其有效地从成型物中去除润滑剂，并且可以在控制烧结后的变形和发生裂纹的同时获得高磁特性; 并提供稀土烧结磁体制造方法。解决方案：在含有作为组分的有机物质的润滑剂和具有预定结构的合金粉末的组合物之后，在磁场中压制形成成型物质; 在含氢的气氛气体（H 2 ）中，通过在低于润滑剂的沸腾或分解温度的温度区域对模制物质进行热处理，从模制物质中除去润滑剂至少在一部分过程中。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006310797A Process for producing rare earth permanent magnet 有权
标题翻译：生产稀土永磁体的方法
公开(公告)号：JP2006310797A
公开(公告)日：2006-11-09
申请号：JP2006070217
申请日：2006-03-15
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , NISHIZAWA KOICHI , SAKAMOTO TOKUJI
IPC分类号： H01F41/02 , B22F1/02 , B22F3/00 , B22F3/02 , B22F9/04 , C22C33/02 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a process for producing a rare earth permanent magnet in which even a smaller quantity of lubricant added can exhibit the effect as a lubricant sufficiently. SOLUTION: The process for producing an R-T-B (R: one kind or more than one kind of rare earth elements, T: Co and/or Fe, B: boron) based rare earth permanent magnet comprises a step for pulverizing a material alloy roughly, a step for adding first lubricant to roughly pulverized powder produced in the rough pulverization step, a step for pulverizing the roughly pulverized powder added with lubricant finely, a step for adding second lubricant to finely pulverized powder produced in the fine pulverization step and stirring it in a temperature zone between 30°C and Tm (Tm is the lowest temperature of melting points of first and second lubricants), a step for shaping the finely pulverized powder passed through the mixing step in a magnetic field, and a step for sintering the compact obtained in the shaping step. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供稀土永磁体的制造方法，即使添加的少量润滑剂也能充分发挥作为润滑剂的效果。解决方案：用于生产RTB（R：一种或多于一种稀土元素，T：Co和/或Fe，B：硼）的稀土永磁体的方法包括用于粉碎材料的步骤合金粗大化的步骤，在粗粉碎工序中制造的粗粉碎粉末中添加第一润滑剂的步骤，将微细添加润滑剂的粗粉碎粉末粉碎的步骤，向细粉碎工序中制造的细粉碎粉末添加第二润滑剂的工序;以及在30℃与Tm之间的温度区域（Tm是第一和第二润滑剂的熔点的最低温度）进行搅拌，在磁场中使通过混合步骤的细粉碎粉末成形的工序，烧结在成形步骤中获得的压块。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2006237212A Rare earth sintered magnet 审中-公开
标题翻译：稀土烧结磁铁
公开(公告)号：JP2006237212A
公开(公告)日：2006-09-07
申请号：JP2005048588
申请日：2005-02-24
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , SAKAMOTO TOKUJI , ENOKIDO YASUSHI , MASUDA TAKESHI
IPC分类号： H01F1/053 , C22C19/07 , C22C38/00 , H01F1/08
摘要： PROBLEM TO BE SOLVED: To provide a rare earth sintered magnet of high residual magnetic flux density (Br) without degrading coercive force (HcJ) and mechanical strength. SOLUTION: The rare earth sintered magnet consists of a sintered body whose carbon content is 500-1,500 ppm with cv value of carbon content on a fracture surface of 200 or less. The cv value of carbon content is preferably 150 or less. The rare earth sintered magnet is preferably an R-Fe-B sintered magnet containing R 2 Fe 14 B compound (R is one or more kinds among Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu). The R-Fe-B sintered magnet like this has such characteristics as flexural strength is 350 MPa or higher, residual magnetic flux density (Br) is 13 kG or higher, and coercive force (HcJ) is 18 kOe or higher. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供高残留磁通密度（Br）的稀土烧结磁体，而不降低矫顽力（HcJ）和机械强度。解决方案：稀土烧结磁体由碳含量为500-1,500ppm，断裂面上碳含量cv值为200以下的烧结体构成。碳含量的cv值优选为150以下。稀土类烧结磁体优选为含有R 2 SBB 14 B化合物的R-Fe-B烧结磁体（R是Y，La，Ce中的一种或多种， Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu）。这样的R-Fe-B烧结磁体具有弯曲强度为350MPa以上，残留磁通密度（Br）为13kG以上，矫顽力（HcJ）为18kOe以上的特性。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2006041507A Sintered magnet 审中-公开
标题翻译：烧结磁铁
公开(公告)号：JP2006041507A
公开(公告)日：2006-02-09
申请号：JP2005194532
申请日：2005-07-04
申请人： Tdk Corp , Tdk株式会社
发明人： ISHIZAKA TSUTOMU , SAKAMOTO TOKUJI , HIDAKA TETSUYA , UCHIDA SHINYA , KATO EIJI , NAKANE MAKOTO
IPC分类号： H01F1/08 , B22F3/00 , C22C33/02 , C22C38/00 , H01F1/053
摘要： PROBLEM TO BE SOLVED: To provide a Nd 2 Fe 14 B sintered magnet having a high maximum energy integral. SOLUTION: The sintered magnet has a texture including R 2 Fe 14 B (R represents at least a kind of rare-earth element and includes Nd and/or Pr as essential elements) crystal grains and a grain boundary existing on a boundary between the crystal grains. Composition analyses are conducted on a double-crystal grain boundary existing on a boundary between two adjacent crystal grains and a polycrystal grain boundary existing on a boundary among three or more adjacent crystal grains. For each of the crystal grain boundaries, Cu/R is determined which is a ratio of an amount of Cu to an amount of the element R and C M /C 2 ≤0.7 is established where C 2 represents Cu/R of the double-crystal grain boundary and C M represents Cu/R of the polycrystal grain boundary. Thus, it is possible to obtain a characteristic with the maximum energy integral of 400 kJ/m 3 or larger. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高最大能量积分的Nd 2 SB <14> SBB烧结磁体。＆lt; P＆gt;解决方案：烧结磁体具有包括R SB 2，SB 17，B的结构（R表示至少一种稀土元素，包括Nd和/或Pr 作为必需元素）晶粒和存在于晶粒之间的边界上的晶界。组成分析在存在于两个相邻晶粒之间的边界上的双晶晶界和存在于三个或更多个相邻晶粒中的边界上的多晶晶界之间进行。对于每个晶粒边界，确定Cu / R，其是Cu的量与元素R和C的量的比率.C / SB 0.7，其中C 2 表示双晶晶界的Cu / R，C M 表示多晶晶界的Cu / R。因此，可以获得最大能量积分为400kJ / m 3以上的特性。版权所有（C）2006，JPO＆NCIPI

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