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1. 发明授权

EP2800108B1 SINTERED NEODYMIUM MAGNET 有权转让
标题翻译：烧结的NEODYMIUM磁体
公开(公告)号：EP2800108B1
公开(公告)日：2018-04-11
申请号：EP12863318.7
申请日：2012-12-27
申请人： INTERMETALLICS CO., LTD.
发明人： SAGAWA, Masato , MIZOGUCHI, Tetsuhiko
IPC分类号： H01F1/08 , B22F1/00 , B22F3/00 , C22C33/02 , H01F1/057 , H01F41/02
CPC分类号： H01F1/0577 , C22C33/02 , C22C38/005 , C22C2202/02 , H01F41/0293
摘要： Provided is a NdFeB system sintered magnet which is produced by the grain boundary diffusion method and yet has a high coercive force and squareness ratio with only a small decrease in the maximum energy product. A NdFeB system sintered magnet according to the present invention is a NdFeB system sintered magnet having a base material produced by orienting powder of a NdFeB system alloy and sintering the powder, with Dy and/or Tb (the "Dy and/or Tb" is hereinafter called R H ) attached to and diffused from a surface of the base material through the grain boundary inside the base material by a grain boundary diffusion treatment, wherein the difference C s -C d3 between the R H content C s (wt%) in the grain boundary reaching the surface to which R H is attached and the R H content C d3 (wt%) in the grain boundary at a depth of 3 mm from the aforementioned attachment surface is equal to or smaller than 20 wt%.

2. 发明公开

EP2597660A3 Method and system for manufacturing sintered rare-earth magnet having magnetic anisotropy 审中-公开
标题翻译：用于制造具有磁各向异性的烧结稀土磁体的方法和系统
公开(公告)号：EP2597660A3
公开(公告)日：2018-03-21
申请号：EP12195828.4
申请日：2005-06-30
申请人： INTERMETALLICS CO., LTD.
发明人： Sagawa, Masato , Nagata, Hiroshi , Itatani, Osamu
IPC分类号： H01F41/02 , B22F3/00 , B22F3/02 , B22F3/087 , C22C1/04 , C22C33/02
CPC分类号： H01F41/0246 , B22F3/1021 , B22F2998/10 , C22C1/0433 , C22C33/0278 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0557 , H01F1/0577 , H01F41/0273 , B22F2201/10 , B22F9/08 , B22F3/004 , B22F2202/01 , B22F3/005 , B22F2202/05 , B22F9/04
摘要： To improve the performance of a rare-earth magnet, it is effective to use a low-oxidized powder having a small grain size. One objective of the present invention is to provide a method for manufacturing a sintered rare-earth magnet having a magnetic anisotropy, in which a very active powder having a small grain size can be safely used in a low-oxidized state. Another objective is to provide a method capable of efficiently manufacturing products having various shapes. In a weighing and loading section 41 and a high-density loading section 42, a fine powder as a material of the sintered rare-earth magnet having a magnetic anisotropy is loaded into a mold until its density reaches a predetermined level. Then, in a magnetic orientation section 43, the fine powder is oriented by a pulsed magnetic field. Subsequently, the fine powder is not compressed but immediately sintered in a sintering furnace 44. The present method enables the mass-producing machine to be simple in its operation and its housing to be accordingly smaller, so that it will be possible to eliminate the danger of oxidization or burning of the powder, which has been a serious problem for a conventional method that uses a large-scale die-pressing machine. Furthermore, the manufacturing efficiency can be improved by using a multi-cavity mold for manufacturing a sintered rare-earth magnet having an industrially important shape, such as a plate magnet or an arched plate magnet.
摘要翻译：为了提高稀土类磁铁的性能，使用粒径小的低氧化粉末是有效的。本发明的一个目的是提供一种用于制造具有磁各向异性的烧结稀土磁体的方法，其中具有小粒径的非常活性的粉末可以在低氧化状态下安全地使用。另一个目的是提供一种能够有效地制造具有各种形状的产品的方法。在称量和加载部分41和高密度加载部分42中，将作为具有磁各向异性的烧结稀土磁体的材料的细粉填充到模具中直到其密度达到预定水平。然后，在磁定向部分43中，细粉通过脉冲磁场取向。接着，将细粉末不被压缩，而是立即在烧结炉44。本发明的方法中烧结能够大量生产机器是在其操作简单，其外壳是相应地小，因此，这将是可以消除危险对于使用大型模压机的传统方法而言，这是一个严重问题。此外，通过使用用于制造具有工业上重要形状的烧结稀土磁体如平板磁体或拱形板磁体的多腔模具，可以提高制造效率。

3. 发明授权

EP2571035B1 SYSTEM FOR PRODUCING NdFeB SYSTEM SINTERED MAGNET 有权
标题翻译：生产钕铁硼系列烧结磁体的系统
公开(公告)号：EP2571035B1
公开(公告)日：2017-09-20
申请号：EP11780578.8
申请日：2011-05-09
申请人： INTERMETALLICS CO., LTD.
发明人： HAYASHI, Shinichi
IPC分类号： B22F3/00 , B22F3/03 , B22F3/16 , C22C33/02 , H01F1/053 , H01F1/057 , H01F1/08 , H01F41/02
CPC分类号： H01F1/0577 , B22F3/004 , B22F3/03 , B22F2999/00 , C22C2202/02 , H01F41/0266 , B22F3/10 , B22F2202/05

4. 发明公开

EP3185252A1 RFeB-BASED SINTERED MAGNET 审中-公开
标题翻译：基于RFeB的烧结磁体
公开(公告)号：EP3185252A1
公开(公告)日：2017-06-28
申请号：EP15833977.0
申请日：2015-08-18
申请人： Intermetallics Co. Ltd.
发明人： UNE, Yasuhiro , KUBO, Hirokazu , SAGAWA, Masato , SUGIMOTO, Satoshi , MATSUURA, Masashi , NAKAMURA, Michihide
IPC分类号： H01F1/057 , B22F3/02 , H01F1/08 , H01F41/02 , C22C38/00
CPC分类号： H01F1/0577 , B22F3/02 , B22F3/16 , B22F9/023 , B22F2009/042 , B22F2009/044 , B22F2301/355 , B22F2304/05 , B22F2998/10 , C22C38/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , H01F1/0573 , H01F41/0266 , H02K1/02
摘要： The problem addressed by the present invention is to provide an RFeB system sintered magnet which does not contain a heavy rare-earth element R H (Dy, Tb and Ho) in a practically effective amount and yet is suited for applications in which the magnet undergoes a temperature increase during its use. The RFeB system sintered magnet according to the present invention is an RFeB system sintered magnet containing at least one element selected from the group consisting of Nd and Pr as a rare-earth element R in addition to Fe and B while containing none of Dy, Tb and Ho, the magnet having a temperature characteristic value t (100-23) which satisfies -0.58 (100-23 ) (100-23) is defined by the following equation: t 100 − 23 = H cj 100 − H cj 23 100 − 23 × H cj 23 × 100 using H cj (23) which is the value of the coercivity at a temperature of 23°C and He(100) which is the value of the coercivity at a temperature of 100°C.
摘要翻译：本发明所要解决的问题是提供一种RFeB系烧结磁体，其不含重量稀土元素RH（Dy，Tb和Ho），其实用有效量，并且适用于磁体经历在使用过程中温度会升高。本发明的RFeB系烧结磁铁是除Fe，B以外，还含有Dy，Tb中的任一种以外，还含有选自Nd和Pr中的至少一种元素作为稀土类元素R的RFeB系烧结磁铁和Ho，所述磁体具有满足-0.58

5. 发明公开

EP3151252A1 RFeB-BASED MAGNET AND PROCESS FOR PRODUCING RFeB-BASED MAGNET 审中-公开
标题翻译： RFEB-BASIERTES MAGNET UND VERFAHREN ZUR HERSTELLUNG EINES RFEB-BASIERTEN MAGNETS
公开(公告)号：EP3151252A1
公开(公告)日：2017-04-05
申请号：EP15803329.0
申请日：2015-05-25
申请人： Intermetallics Co. Ltd. , Daido Steel Co.,Ltd.
发明人： MIZOGUCHI, Tetsuhiko , SAGAWA, Masato
IPC分类号： H01F1/057 , B22F3/24 , C22C28/00 , C22C38/00 , H01F1/08 , H01F41/02
CPC分类号： H01F41/0293 , B22F3/24 , C22C28/00 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/10 , C23C10/30
摘要： The purpose of the present invention is to provide an RFeB system sintered magnet which has a high and uniform level of coercivity over the entirety of the single magnet even if the magnet is comparatively thick. The present invention is an RFeB system sintered magnet in which a heavy rare-earth element R H which is at least one kind of rare-earth element selected from the group of Dy, Tb and Ho is diffused into a base material through the grain boundaries of the same base material made of a sintered compact of an RFeB system magnet containing R L , Fe and B, where R L represents a light rare-earth element which is at least one kind of rare-earth element selected from the group of Nd and Pr, wherein: the size of the RFeB system sintered magnet at a smallest-size portion is greater than 3 mm; the amount of heavy rare-earth element R H contained in the RFeB system sintered magnet divided by the volume of the RFeB system sintered magnet is equal to or greater than 25 mg/cm 3 ; and the difference between a local coercivity at the surface of the smallest-size portion and a local coercivity in the central region of the smallest-size portion is equal to or less than 15 % of the local coercivity at the surface.
摘要翻译：本发明的目的是提供一种RFeB系烧结磁体，即使磁体相对较厚，也具有高于整个单个磁体的矫顽力水平和均匀的矫顽力。本发明是一种RFeB系烧结磁体，其中选自Dy，Tb和Ho组中的至少一种稀土元素的重稀土元素RH通过晶界的晶界扩散到基材中由包含RL，Fe和B的RFeB系磁体的烧结体制成的相同的基材，其中RL表示作为选自Nd和Pr中的至少一种稀土元素的轻稀土元素，其中：最小尺寸部分的RFeB系烧结磁体的尺寸大于3mm; RFeB系烧结磁体中所含的重稀土类元素R H除以RFeB系烧结磁体的体积的量等于或大于25mg / cm 3; 并且最小尺寸部分表面的局部矫顽力与最小尺寸部分的中心区域的局部矫顽力之差等于或小于表面局部矫顽力的15％。

6. 发明公开

EP3059743A1 NDFEB SYSTEM SINTERED MAGNET AND METHOD FOR PRODUCING THE SAME 有权转让
标题翻译： GESINTERTER NDFEB-SYSTEMMAGNET UND VERFAHREN ZUR HERSTELLUNG DAVON
公开(公告)号：EP3059743A1
公开(公告)日：2016-08-24
申请号：EP16162932.4
申请日：2012-12-27
申请人： Intermetallics Co. Ltd.
发明人： SAGAWA, Masato , MIZOGUCHI, Tetsuhiko
IPC分类号： H01F1/08 , B22F1/00 , B22F3/00 , C22C33/02 , H01F1/057 , H01F41/02
CPC分类号： H01F7/02 , B22F1/0011 , B22F9/023 , C22C33/02 , H01F1/0557 , H01F1/057 , H01F1/0577 , H01F41/0266 , H01F41/0293
摘要： Provided is a NdFeB system sintered magnet which can be used in the grain boundary diffusion method as a base material in which R H can be easily diffused through the rare-earth rich phase and which itself has a high coercive force, a high maximum energy product and a high squareness ratio, as well as a method for producing such a NdFeB system sintered magnet. A NdFeB system sintered magnet according to the present invention aimed at solving the aforementioned problem is characterized in that the average grain size of the main-phase grains in the NdFeB system sintered magnet is equal to or smaller than 4.5 µm, the carbon content of the entire NdFeB system sintered magnet is equal to or lower than 1000 ppm, and the percentage of the total volume of a carbon rich phase in a rare-earth rich phase at a grain-boundary triple point in the NdFeB system sintered magnet to the total volume of the rare-earth rich phase is equal to or lower than 50 %.
摘要翻译：本发明提供一种可用于晶界扩散法的NdFeB系烧结磁体，作为可以容易地通过富稀相扩散RH并且本身具有高矫顽力，高最大能量产物和高矩形比，以及这种NdFeB系烧结磁体的制造方法。针对解决上述问题的本发明的NdFeB系烧结磁体的特征在于，NdFeB系烧结磁体中的主相晶粒的平均粒径为4.5μm以下，整个钕铁硼系烧结磁体等于或低于1000ppm，并且在NdFeB系烧结磁体中的晶界三重点的富稀相中的富碳相的总体积百分比相对于总体积的稀土相浓度等于或低于50％。

7. 发明公开

EP2977998A4 RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS 失效转让
标题翻译：用于制造晶粒限制扩散工艺的RFEB磁体，RFEB磁体和涂覆材料的方法
公开(公告)号：EP2977998A4
公开(公告)日：2016-03-23
申请号：EP14768462
申请日：2014-03-13
申请人： INTERMETALLICS CO LTD , DAIDO STEEL CO LTD
发明人： SAGAWA MASATO , TAKAGI SHINOBU , HASHINO HAYATO
IPC分类号： H01F41/02 , B22F1/00 , B22F3/24 , B22F9/00 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F1/0571 , B22F1/02 , B22F3/14 , C22C28/00 , C22C38/00 , C22C2202/02 , H01F1/0576 , H01F1/0577 , H01F41/0253 , H01F41/0293
摘要： The present invention addresses the problem of providing a method for producing an RFeB system magnet with high coercivity by preventing a coating material from peeling off the surface of a base material during a grain boundary diffusion treatment. Provided is a method for producing an R L 2 Fe 14 B system magnet which is a sintered magnet or a hot-deformed magnet containing, as the main rare-earth element, a light rare-earth element R L which is at least one of the two elements ofNd and Pr, the method including the steps of: applying, to a surface of a base material M of the R L 2 Fe 14 B system magnet, a coating material 10 prepared by mixing a silicone grease 11 and an R H -containing powder 14 containing a heavy rare-earth element R H composed of at least one element selected from the group of Dy, Tb and Ho; and heating the base material M together with the coating material. The silicone having a siloxane bond prevents the coating material 10 from peeling off the surface of the base material M during the heating process. The improved adhesion of the coating material 10 to the base material M facilitates transfer of R H into the grain boundaries of the base material M, whereby the coercivity is increased.

8. 发明公开

EP2991086A1 MOLD FOR MANUFACTURING SINTERED MAGNET AND METHOD FOR MANUFACTURING SINTERED MAGNET USING SAME 审中-公开
标题翻译：用于制造烧结磁体的模具及使用该制造烧结磁体的方法
公开(公告)号：EP2991086A1
公开(公告)日：2016-03-02
申请号：EP14788918.2
申请日：2014-03-18
申请人： Intermetallics Co. Ltd.
发明人： KOMURA, Kazuyuki , SAGAWA, Masato
IPC分类号： H01F41/02 , B22F3/00 , B22F3/02
CPC分类号： H01F41/0266 , B22F1/0081 , B22F3/004 , B22F3/03 , B22F3/10 , B22F2998/10 , B22F2999/00 , B28B7/0097 , C22C2202/02 , H01F1/0577 , H01F1/086 , H01F41/0273 , B22F3/02 , B22F2202/05
摘要： The problem addressed by the present invention is to provide a sintered magnet production mold which can improve the uniformity in the filling density of the alloy powder, which allows its inside to be easily cleaned, and in which the alloy powder is hardly caught in the gap between the cover and the cavity. The main body 11 has: a main cavity 111 formed inwards from a main-body surface 110A, including an upper cavity 111A shaped like a rectangular parallelepiped and a lower cavity 111B shaped like a downward-convex partial cylinder directly joined to the deeper end of the upper cavity 111A; and a side cavity 112 provided on the outside of the opening of the upper cavity 111A on the main-body surface 110A at each of the two ends of the opening in the axial direction of the aforementioned partial cylinder, the side cavity 112 formed inwards from the main-body surface 110A and shaped like a partial cylinder having an axis parallel to the axis of the partial cylinder of the lower cavity 111B. The cover 12 has a base surface 110A corresponding to the main-body surface 110A and a convex rib 122 bulging from the base surface 110A, the convex rib 122 having a shape corresponding to the two side cavities 112 and a virtual cavity shaped like a partial cylinder connecting the two side cavities 112.
摘要翻译：本发明所要解决的问题是提供一种烧结磁体制造模具，其能够改善合金粉末的填充密度的均匀性，这使得其内部易于清洁，并且其中合金粉末很难被夹在间隙中盖子和空腔之间。主体11具有：从主体表面110A向内形成的主空腔111，该主空腔111包括形状像长方体的上空腔111A和下空腔111B，其形状像向下凸出的部分圆柱体，上腔111A; 以及在上述部分圆筒的轴向的开口部的两端部的主体表面110A上的上部空腔111A的开口部的外侧设置的侧部空腔112，主体表面110A并且形状像具有平行于下腔体111B的部分圆柱体的轴线的轴线的部分圆柱体。盖12具有与主体表面110A对应的基底表面110A和从基底表面110A凸出的凸肋122，凸肋122具有对应于两个侧腔112的形状和形状像部分圆柱体连接两个侧腔112。

9. 发明公开

EP2978000A1 GRAIN BOUNDARY DIFFUSION PROCESS JIG, AND CONTAINER FOR GRAIN BOUNDARY DIFFUSION PROCESS JIG 审中-公开
标题翻译： KORNGRENZENDIFFUSIONSPROZESSVORRICHTUNG UNDBEHÄLTERFÜRDIE KORNGRENZENDIFFUSIONSPROZESSVORRICHTUNG
公开(公告)号：EP2978000A1
公开(公告)日：2016-01-27
申请号：EP14770067.8
申请日：2014-03-13
申请人： Intermetallics Co. Ltd. , Daido Steel Co.,Ltd.
发明人： SAGAWA, Masato , TAKAGI, Shinobu
IPC分类号： H01F41/02 , B22F3/10 , H01F1/057 , H01F1/08
CPC分类号： H01F41/0293 , B22F2005/005 , C21D10/00 , C22C2202/02 , C23C10/28 , H01F1/0576 , H01F1/0577
摘要： The present invention addresses the problem of providing a grain boundary diffusion treatment jig that does not easily become fused with a base material S an R L 2 Fe 14 B system magnet having a surface coated with an adhesion material P containing an element R H (which is at least one element selected from the group of Dy, Tb and Ho) when subjected to a heating process for grain boundary diffusion treatment. The grain boundary diffusion treatment jig 10 includes a plate-shaped base 11 having a surface with a number of projections 12 arranged so that the tips 121 of the projections 12 lie in one plane, and the surfaces of the tips 121 are made of a ceramic material. Since the contact area between the adhesion material applied to the surface of the base material and the grain boundary diffusion treatment jig is reduced by the use of the projections 12 for supporting the base material S, and since a ceramic material that does not easily react with the adhesion material P is used, the fusion of the base material S and the grain boundary diffusion treatment jig 10 is less likely to occur in the aforementioned heating process.
摘要翻译：本发明的目的在于提供一种不容易与基材S的RL 2 Fe 14 B系磁体的容易熔融的晶界扩散处理夹具的问题，该磁体具有涂覆有包含元素RH（其处于当进行晶界扩散处理的加热处理时，选自Dy，Tb和Ho组中的至少一种元素）。晶界扩散处理夹具10包括具有多个突起12的表面的板状基底11，突起12的顶端121位于一个平面中，并且尖端121的表面由陶瓷材料。由于通过使用用于支撑基材S的突起12来减小施加到基材表面的粘合材料与晶界扩散处理夹具之间的接触面积，并且由于不容易与使用粘合材料P，在上述加热过程中不太可能发生基材S和晶界扩散处理夹具10的熔合。

10. 发明公开

EP2977998A1 RFeB-BASED MAGNET PRODUCTION METHOD, RFeB-BASED MAGNET, AND COATING MATERIAL FOR GRAIN BOUNDARY DIFFUSION PROCESS 失效转让
标题翻译：工艺制造用于晶界扩散处理RFeB磁铁RFeB磁铁及涂层材料
公开(公告)号：EP2977998A1
公开(公告)日：2016-01-27
申请号：EP14768462.5
申请日：2014-03-13
申请人： INTERMETALLICS CO., LTD. , Daido Steel Co.,Ltd.
发明人： SAGAWA, Masato , TAKAGI, Shinobu , HASHINO, Hayato
IPC分类号： H01F41/02 , B22F1/00 , B22F3/24 , B22F9/00 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F1/0571 , B22F1/02 , B22F3/14 , B22F2998/00 , B22F2999/00 , C22C28/00 , C22C38/00 , C22C2202/02 , H01F1/0576 , H01F1/0577 , H01F41/0253 , H01F41/0293 , B22F3/02 , B22F3/10 , B22F2003/242 , B22F1/0059 , B22F1/0088
摘要： The present invention addresses the problem of providing a method for producing an RFeB system magnet with high coercivity by preventing a coating material from peeling off the surface of a base material during a grain boundary diffusion treatment. Provided is a method for producing an R L 2 Fe 14 B system magnet which is a sintered magnet or a hot-deformed magnet containing, as the main rare-earth element, a light rare-earth element R L which is at least one of the two elements ofNd and Pr, the method including the steps of: applying, to a surface of a base material M of the R L 2 Fe 14 B system magnet, a coating material 10 prepared by mixing a silicone grease 11 and an R H -containing powder 14 containing a heavy rare-earth element R H composed of at least one element selected from the group of Dy, Tb and Ho; and heating the base material M together with the coating material. The silicone having a siloxane bond prevents the coating material 10 from peeling off the surface of the base material M during the heating process. The improved adhesion of the coating material 10 to the base material M facilitates transfer of R H into the grain boundaries of the base material M, whereby the coercivity is increased.
摘要翻译：本发明解决了这个问题，提供的用于通过从晶界扩散处理过程中剥离的基体材料的表面防止涂层材料在与高矫顽力RFeB体系磁铁制造的方法。提供了一种用于在RL 2制备的Fe 14 B系永磁体的方法的所有其是烧结磁体或热变形的磁体含有作为主要的稀土类元素，轻稀土类元素RL的所有这是两者中的至少一个元件中Nd和Pr，该方法包括以下步骤：施加到RL 2的Fe 14 B系磁体，通过混合硅润滑脂11和含至RH粉末14制备的涂层材料10的基材M的表面含有RH由选自的Dy，Tb和Ho组成中选择的至少一种元素的重稀土类元素; 并用涂层材料一起加热基材M。具有硅氧烷键的硅酮从在加热过程中剥离基材M的表面防止了涂层材料10。涂层材料10向基材M的改进的粘合性便于R H的转移到基材M的晶界，由此矫顽力增加。

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