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21. 发明专利

JP2014194958A Sintered magnet 审中-公开
标题翻译：烧结磁铁
公开(公告)号：JP2014194958A
公开(公告)日：2014-10-09
申请号：JP2011136875
申请日：2011-06-21
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SATSU YUICHI , KOMURO MATAHIRO
IPC分类号： H01F1/08 , H01F1/057
CPC分类号： H01F1/0579 , B22F1/02 , B32B15/011 , C22C28/00 , C22C38/002 , C22C38/005 , C22C38/10 , C22C38/14 , C22C2202/02 , H01F1/0577 , H01F41/0293
摘要： PROBLEM TO BE SOLVED: To provide a sintered magnet that satisfies reduction of rare earth elements that are rare resources and increase of coercive force and a maximum energy product.SOLUTION: An Fe-based powder of high saturation magnetic flux density is mixed with a NdFeB-based magnetic powder. The Fe-based powder has shape anisotropy and a surface of which is coated with a fluoride containing heavy rare earth element by a solution treatment. An average particle diameter of the Fe-based powder is larger than an average particle diameter of the NdFeB-based magnetic powder.
摘要翻译：要解决的问题：提供一种满足稀有资源的稀土元素的还原和矫顽力的增加和最大能量乘积的烧结磁体。解决方案：将高饱和磁通密度的Fe基粉末与NdFeB 的磁粉。 Fe基粉末具有形状各向异性，并通过固溶处理将其表面涂覆有含有重稀土元素的氟化物。 Fe系粉末的平均粒径大于NdFeB系磁性粉末的平均粒径。

22. 发明专利

JP5600090B2 Methods of making nd-fe-b sintered magnet with Dy or tb 有权
公开(公告)号：JP5600090B2
公开(公告)日：2014-10-01
申请号：JP2011245644
申请日：2011-11-09
申请人：ジーエム・グローバル・テクノロジー・オペレーションズ・エルエルシー
发明人：ユーコン・ワン
IPC分类号： H01F41/02 , B22F1/02 , C22C33/02 , H01F1/057 , H01F1/08
CPC分类号： B22F1/025 , B22F9/023 , B22F2009/041 , B22F2998/10 , B22F2999/00 , H01F1/0572 , H01F1/0577 , H01F41/0293 , B22F9/04 , B22F3/02 , B22F3/04 , B22F3/10 , C23C16/00
摘要： A method of making a permanent magnet is described. In one embodiment, the method includes providing a first alloy powder having a desired composition, the alloy powder containing neodymium, iron, and boron; coating the first alloy powder with dysprosium, dysprosium alloy, terbium, or terbium alloy so that the first alloy powder has a surface concentration of dysprosium, terbium, or both in excess of a bulk concentration of dysprosium, terbium, or both; and forming the permanent magnet from the coated alloy powder using a powder metallurgy process, the permanent magnet having a non-uniform distribution of dysprosium, terbium, or both therein. Permanent magnets are also described.

23. 发明专利

JP2014146788A R-t-b-based rare earth sintered magnet, alloy for r-t-b-based rare earth sintered magnet, and method for manufacturing the same 有权
标题翻译：基于R-T-B的稀土焊接磁铁，用于R-T-B的稀土烧结磁体的合金及其制造方法
公开(公告)号：JP2014146788A
公开(公告)日：2014-08-14
申请号：JP2013256492
申请日：2013-12-11
申请人： Showa Denko Kk , 昭和電工株式会社
发明人： YAMAZAKI TAKASHI , NAKAJIMA KENICHIRO
IPC分类号： H01F1/057 , B22F3/00 , C22C38/00 , H01F1/08 , H01F41/02
CPC分类号： H01F1/40 , B22F1/0055 , B22F2998/10 , B22F2999/00 , C22C38/002 , C22C38/005 , C22C38/06 , C22C38/16 , C22C2202/02 , H01F1/0571 , H01F1/0577 , H01F41/0266 , H01F41/0273 , H01F41/0293 , B22F1/0059 , B22F3/03 , B22F3/10 , B22F2003/248 , B22F2009/044 , B22F2009/048 , B22F2009/049 , B22F2201/02 , B22F2201/11 , B22F2202/05
摘要： PROBLEM TO BE SOLVED: To provide an R-T-B-based magnet with high coercive force without increasing a Dy content.SOLUTION: An R-T-B-based rare earth sintered magnet comprises: a rare earth element R; a transition metal T including Fe as an essential element; a metal element M including Al and/or Ga; B; Cu; and inevitable impurities. The R-T-B-based rare earth sintered magnet includes 13.4-17 atom% of R, 4.5-5.5 atom% of B, and 0.1-2.0 atom% of M with the balance consisting of T. The R-T-B-based rare earth sintered magnet is composed of a sintered compact comprising a main phase comprising RFeB, and a grain boundary phase including the rare earth element R more than that in the main phase. The main phase has a direction of magnetization coincident with a c-axis direction. The main phase has a crystal grain which takes an elliptical or oval-shaped form extending in a direction intersecting the c-axis direction. The grain boundary phase includes: an R-rich phase having a total atomic concentration of 70 atom% or more for the rare earth element; and a transition metal-rich phase having a total atomic concentration of 25-35 atom% for the rare earth element.
摘要翻译：要解决的问题：提供具有高矫顽力的R-T-B系磁体，而不增加Dy含量。解决方案：R-T-B系稀土烧结磁体包括：稀土元素R; 包含Fe作为必需元素的过渡金属T; 包括Al和/或Ga的金属元素M; B; 铜; 和不可避免的杂质。 RTB型稀土烧结磁体包括13.4-17原子％的R，4.5-5.5原子％的B和0.1-2.0原子％的M，余量由T组成.RBB基稀土烧结磁体由包括包含RFeB的主相和包含稀土元素R的晶界相的烧结体比主相中的。主相具有与c轴方向一致的磁化方向。主相具有沿与c轴方向交叉的方向延伸的椭圆形或椭圆形的晶粒。晶界相包括：稀土元素的总原子浓度为70原子％以上的富R相; 和稀土元素的总原子浓度为25〜35原子％的过渡金属富集相。

24. 发明专利

JP5553461B2 NdFeB sintered magnet 有权
公开(公告)号：JP5553461B2
公开(公告)日：2014-07-16
申请号：JP2013536354
申请日：2012-12-27
申请人：インターメタリックス株式会社
发明人：眞人佐川 , 徹彦溝口
IPC分类号： H01F1/08 , B22F3/00 , B22F3/24 , C22C33/02 , C22C38/00 , H01F1/057 , H01F41/02
CPC分类号： H01F1/0577 , C22C33/0278 , C22C38/00 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C22C2202/02 , H01F1/057 , H01F41/0293

25. 发明专利

JP2014063997A Method 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：JP2014063997A
公开(公告)日：2014-04-10
申请号：JP2013179444
申请日：2013-08-30
申请人： Shin Etsu Chem Co Ltd , 信越化学工業株式会社
发明人： NAGASAKI KINSHI , SHIMAO MASANOBU
IPC分类号： H01F41/02 , B22F3/24 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F41/0253 , B22F3/24 , B22F2003/242 , B22F2003/248 , C21D1/18 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/14 , C25D5/34 , C25D5/48 , C25D7/001 , C25D13/02 , C25D13/22 , C25D15/00 , H01F1/0577 , H01F41/005 , H01F41/0293
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a rare earth permanent magnet, by which a high-performance rare earth magnet having a good residual magnetic flux density and a high coercive force can be efficiently produced.SOLUTION: In a method for producing a rare earth permanent magnet, a sintered magnet body comprising a R-Fe-B based composition (Rrepresents one or two or more elements selected from rare earth elements including Y and Sc) is immersed in an electrodeposition liquid obtained by dispersing powder containing an acid fluoride of Rand/or a hydride of R(Rand Rrepresent one or two or more selected from rare earth elements including Y and Sc) in a solvent, an electrodeposition process is used to coat the powder to the surface of the sintered magnet body, and, in the state where the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to heat treatment in a vacuum or inert gas at a temperature equal to or less than the sintering temperature of the magnet. By the method, a coating quantity of powder can be easily controlled, and a powder coating film small in variation of film thickness, precise, and less in unevenness of coating can be formed on the surface of a magnet body with good adhesion. Further, a large area can be efficiently processed for a short time, and a high-performance rare earth magnet having a good residual magnetic flux density and a high coercive force can be extremely efficiently produced.
摘要翻译：要解决的问题：提供一种稀土永磁体的制造方法，通过该方法可以有效地制造具有良好的剩余磁通密度和高矫顽力的高性能稀土磁体。方案：在一种生产方法中，稀土永磁体，包含R-Fe-B基组合物（R表示选自由Y和Sc的稀土元素选择的一种或两种以上的元素）的烧结磁体浸渍在通过使含有酸的粉末分散而得到的电沉积液中兰德的氟化物或R（在R和R中的一种或两种以上选自包括Y和Sc的稀土元素中的一种或多种）在溶剂中的氢化物，使用电沉积方法将粉末涂覆到烧结磁体的表面，以及在粉末存在于磁体表面的状态下，磁体和粉末在真空或惰性气体中在等于或小于sin的温度下进行热处理打磨磁铁的温度。通过该方法，可以容易地控制粉末的涂布量，并且可以在具有良好粘附性的磁体的表面上形成涂膜的不均匀性，膜厚变化小，精度差，涂膜不均匀性小的粉末涂膜。此外，可以在短时间内有效地加工大面积，并且可以非常有效地产生具有良好的剩余磁通密度和高矫顽力的高性能稀土磁体。

26. 发明专利

JP2014063996A Method 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：JP2014063996A
公开(公告)日：2014-04-10
申请号：JP2013179407
申请日：2013-08-30
申请人： Shin Etsu Chem Co Ltd , 信越化学工業株式会社
发明人： NAGASAKI KINSHI , SHIMAO MASANOBU
IPC分类号： H01F41/02 , B22F3/24 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： C25D7/001 , B22F3/24 , B22F2003/242 , B22F2003/248 , C21D1/28 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/14 , C25D3/562 , H01F1/0536 , H01F1/057 , H01F1/0577 , H01F41/0293
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a rare earth permanent magnet, by which a high-performance rare earth magnet having a good residual magnetic flux density and a high coercive force can be efficiently produced.SOLUTION: In a method for producing a rare earth permanent magnet, a sintered magnet body comprising a R-Fe-B based composition (Rrepresents one or two or more elements selected from rare earth elements including Y and Sc) is immersed in an electrodeposition liquid obtained by dispersing powder containing an oxide of R(Rrepresents one or two or more selected from rare earth elements including Y and Sc) in a solvent, an electrodeposition process is used to coat the powder to the surface of the sintered magnet body, and, in the state where the powder is present on the surface of the magnet body, the magnet body and the powder are subjected to heat treatment in a vacuum or inert gas at a temperature equal to or less than the sintering temperature of the magnet. By the method, a coating quantity of powder can be easily controlled, and a powder coating film small in variation of film thickness, precise, and less in unevenness of coating can be formed on the surface of a magnet body with good adhesion. Further, a large area can be efficiently processed for a short time, and a high-performance rare earth magnet having a good residual magnetic flux density and a high coercive force can be extremely efficiently produced.
摘要翻译：要解决的问题：提供一种稀土永磁体的制造方法，通过该方法可以有效地制造具有良好的剩余磁通密度和高矫顽力的高性能稀土磁体。方案：在一种生产方法中，稀土永磁体，包含R-Fe-B基组合物（R表示选自Y和Sc中的稀土元素中的一种或两种以上的元素）的烧结磁体浸渍在通过使含有氧化物的粉末分散而得到的电沉积液中的R（R表示选自包括Y和Sc的稀土元素中的一种或两种以上的）在溶剂中，使用电沉积方法将粉末涂覆到烧结磁体的表面，并且在粉末为在磁体的表面上，磁体和粉末在真空或惰性气体中在等于或小于磁体的烧结温度的温度下进行热处理。通过该方法，可以容易地控制粉末的涂布量，并且可以在具有良好粘附性的磁体的表面上形成涂膜的不均匀性，膜厚变化小，精度差，涂膜不均匀性小的粉末涂膜。此外，可以在短时间内有效地加工大面积，并且可以非常有效地产生具有良好的剩余磁通密度和高矫顽力的高性能稀土磁体。

27. 发明专利

JP5429002B2 Sintered magnets, motors and motor vehicles 有权
公开(公告)号：JP5429002B2
公开(公告)日：2014-02-26
申请号：JP2010079052
申请日：2010-03-30
申请人： Tdk株式会社
发明人：信岩崎 , 良太國枝 , 文崇馬場 , 哲田中 , 佳則藤川
IPC分类号： H01F1/08 , B22F3/24 , C21D6/00 , C22C38/00 , H01F1/057 , H01F41/02
CPC分类号： H01F41/0293
摘要： PROBLEM TO BE SOLVED: To provide a sintered magnet which is superior in residual flux density and coercivity.SOLUTION: The sintered magnet includes a group of crystal grains 2 for an R-T-B rare-earth magnet, which has a core 4, and a shell 6 for covering the core 4. Percentage of the mass of heavy rare earth elements in the shell 6 is higher than the percentage of the mass of heavy rare earth elements in the core 4, and the thickest portion of the shell 6 in the crystal grains 2 faces a grain boundary triple point 1.

28. 发明专利

JPWO2012043692A1 Ｒ−Ｔ−Ｂ系焼結磁石の製造方法有权
公开(公告)号：JPWO2012043692A1
公开(公告)日：2014-02-24
申请号：JP2012536532
申请日：2011-09-29
申请人：日立金属株式会社
发明人：國吉　太 , 太國吉
IPC分类号： H01F41/02 , B22F3/24 , C21D6/00 , C22C33/02 , C22C38/00 , H01F1/057 , H01F1/08
CPC分类号： H01F41/005 , C22C38/005 , C22C38/06 , C22C38/10 , C22C38/16 , C22C38/32 , C22C2202/02 , H01F1/0577 , H01F41/0293
摘要：【課題】量産性に優れた重希土類元素RHの拡散処理を提供する。【解決手段】焼結磁石の製造方法は、R−T−B系焼結磁石体を準備する工程と、DyおよびTbの少なくとも一方を含むフッ化物、酸化物、酸フッ化物の少なくともいずれかからなるRH拡散源を準備する工程と、前記R−T−B系焼結磁石体と前記RH拡散源とを相対的に移動可能かつ近接または接触可能に処理室内に装入する工程と、前記R−T−B系焼結磁石体と前記RH拡散源とを前記処理室内にて連続的または断続的に移動させながら、前記R−T−B系焼結磁石体および前記RH拡散源を800℃以上950℃以下の処理温度に加熱するRH拡散処理工程とを包含する。【選択図】図1

29. 发明专利

JP2014017956A Divided permanent magnet and method of manufacturing the same 有权
标题翻译：分离永磁体及其制造方法
公开(公告)号：JP2014017956A
公开(公告)日：2014-01-30
申请号：JP2012153196
申请日：2012-07-09
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KITAHARA MAKOTO
IPC分类号： H02K15/03 , H01F7/02 , H01F41/02 , H02K1/27
CPC分类号： H01F41/0293 , H01F1/0577 , H01F7/02 , H01F41/0253
摘要： PROBLEM TO BE SOLVED: To suppress demagnetization of a divided permanent magnet formed by dividing a permanent magnet matrix into multiple parts.SOLUTION: Divided permanent magnets 30 and 32 are formed by forming straight notch portions in a permanent magnet matrix, diffusing metal having higher coercivity performance than the permanent magnet matrix into the permanent magnet matrix from surfaces thereof including the notched surfaces, and dividing the permanent magnet matrix into a plurality of permanent magnets along the straight notch portions. An Nd-Fe-B sintered magnet may be used as the permanent magnet matrix, and dysprosium (Dy) may be used as the metal having higher coercivity performance. A plurality of straight recessed portions 12, 14 and 16 or straight grooves may be used as the notch portions.
摘要翻译：要解决的问题：为了抑制通过将永磁体矩阵分成多个部分而形成的分割永久磁铁的退磁。解决方案：通过在永久磁铁基体中形成直的切口部分形成分割的永久磁铁30和32，具有较高矫顽力的扩散金属将永磁体矩阵从包括凹槽表面的表面分解成永久磁体矩阵，并将永磁体矩阵沿直线切口部分分成多个永磁体。可以使用Nd-Fe-B烧结磁体作为永磁体基体，并且可以使用镝（Dy）作为具有较高矫顽力性能的金属。可以使用多个直凹部12,14和16或直槽作为切口部。

30. 发明专利

JP5400256B1 NdFeB sintered magnet 有权
公开(公告)号：JP5400256B1
公开(公告)日：2014-01-29
申请号：JP2013536352
申请日：2012-12-27
申请人：インターメタリックス株式会社
发明人：眞人佐川 , 徹彦溝口
IPC分类号： H01F1/08 , B22F1/00 , B22F3/00 , C22C33/02 , H01F1/057 , H01F41/02
CPC分类号： H01F1/0536 , C22C33/0278 , C22C38/00 , C22C2202/02 , H01F1/0577 , H01F7/02 , H01F41/0293
摘要：粒界拡散法によって製造されるNdFeB系焼結磁石であって、高い保磁力と角型比を有し、最大エネルギー積の低下の少ないNdFeB系焼結磁石を提供することである。本発明に係るNdFeB系焼結磁石は、NdFeB系合金の粉末を配向し、焼結することにより製造した基材の表面に付着させたDy及び／又はTb（以下、「Dy及び／又はTb」を「R
H 」とする）を、粒界拡散処理によって該基材内部の粒界に拡散させたNdFeB系焼結磁石であって、粒界三重点におけるR
H の濃度C
t (wt%)と、該粒界三重点に繋がる二粒子粒界部におけるR
H の濃度C
w (wt%)の差C
t -C
w が4wt%以下となる粒界三重点の数が、粒界三重点の総数の60%以上、であることを特徴とする。

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