公开(公告)号：US09623482B2

公开(公告)日：2017-04-18

申请号：US14187190

申请日：2014-02-21

申请人： Yantai Zhenghai Magnetic Material Co., Ltd.

发明人： Yongjiang Yu ,  Xiuyan Sun ,  Zhiqiang Li ,  Yulin Wang ,  Lei Liu

IPC分类号： B22F3/26 ,  H01F1/057 ,  H01F41/02 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C33/02

CPC分类号： B22F3/26 ,  B22F2998/10 ,  B22F2999/00 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293 ,  B22F3/10 ,  B22F2201/20 ,  B22F2003/242 ,  B22F2003/248

摘要： A method for preparing an R—Fe—B based sintered magnet, including: preparing a R1—Fe—B-M sintered magnet having a thickness of between 1 and 10 mm; spraying a layer of Tb or Dy having a thickness of between 10 and 200 μm on each surface of the sintered magnet in a sealed box under an Ar atmosphere by hot spraying method; and transferring the sintered magnet coated with the layer of Tb or Dy to a vacuum sintering furnace, heating the sintered magnet at the temperature of between 750 and 1000° C. in a vacuum condition or under the Ar atmosphere, and allowing heavy rare earth element Tb or Dy to enter an inner part of the sintered magnet via grain boundary diffusion.

公开(公告)号：US20170103836A1

公开(公告)日：2017-04-13

申请号：US15285113

申请日：2016-10-04

申请人： TDK CORPORATION

发明人： Tetsuya HIDAKA ,  Takuma HAYAKAWA ,  Makoto IWASAKI ,  Ayato KAKOKI

IPC分类号： H01F1/057 ,  C22C38/14 ,  H01F1/058 ,  C22C38/06 ,  C22C38/04 ,  C22C38/00 ,  C22C38/16 ,  C22C38/10

CPC分类号： H01F1/0577 ,  C22C38/002 ,  C22C38/005 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/058 ,  H01F41/0293

摘要： An R-T-B based sintered magnet includes “R”, “T”, and “B”. “R” represents a rare earth element. “T” represents a metal element other than rare earth elements including at least Fe, Cu, Mn, Al, Co, Ga, and Zr. “B” represents boron or boron and carbon. With respect to 100 mass % of a total mass of the R-T-B based sintered magnet, a content of “R” is 28.0 to 31.5 mass %, a content of Cu is 0.04 to 0.50 mass %, a content of Mn is 0.02 to 0.10 mass %, a content of Al is 0.15 to 0.30 mass %, a content of Co is 0.50 to 3.0 mass %, a content of Ga is 0.08 to 0.30 mass %, a content of Zr is 0.10 to 0.25 mass %, and a content of “B” is 0.85 to 1.0 mass %.

公开(公告)号：US20170098496A1

公开(公告)日：2017-04-06

申请号：US15382672

申请日：2016-12-18

申请人： SHENYANG GENERAL MAGNETIC CO., LTD.

发明人： Baoyu Sun ,  Yongli Duan

IPC分类号： H01F1/057 ,  C22C38/16 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C22C38/00 ,  C22C33/04 ,  B22F9/08 ,  B22F1/00 ,  B22F9/04 ,  B22F3/16 ,  B22F3/087 ,  B22F3/10 ,  C21D9/00 ,  C21D6/00 ,  H01F41/02

CPC分类号： C21D6/007 ,  B22F1/0055 ,  B22F3/101 ,  B22F3/16 ,  B22F3/162 ,  B22F2998/10 ,  B22F2999/00 ,  C21D9/00 ,  C22C33/02 ,  C22C33/04 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F1/059 ,  H01F41/0293 ,  B22F9/08 ,  B22F2009/048 ,  B22F2009/044 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/02 ,  B22F2201/20 ,  B22F2201/05

摘要： A high-performance NdFeB permanent magnet including a nitride phase and a production method thereof are provided. A main phase of the NdFeB permanent magnet has a structure of R2T14B; a grain boundary phase is distributed around the main phase and contains N, F, Zr, Ga and Cu; a composite phase containing R1, Tb and N exists between the main phase and the grain boundary phase and includes a phase having a structure of (R1, Tb)2T14(B, N). R represents at least two rare earth elements, and includes Pr and Nd; T represents Fe, Mn, Al and Co; R1 represents at least one rare earth element, and includes at least one of Dy and Tb; the main phase contains Pr, Nd, Fe, Mn, Al, Co and B; and the grain boundary phase further contains at least one of Nb and Ti. Through placing partially B by N, a magnetic performance is increased.

公开(公告)号：US20170062127A1

公开(公告)日：2017-03-02

申请号：US15060188

申请日：2016-03-03

申请人： Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.

发明人： Haibo Yi ,  Yi Dong ,  Shulin Diao ,  Yi Yuan ,  Shujie Wu ,  Cailing Sun ,  Juchang Miao ,  Ya Chen ,  Wenjie Yuan

IPC分类号： H01F41/02 ,  H01F1/057 ,  B22F3/12 ,  B22F3/24 ,  B22F3/26 ,  H01F41/00 ,  C21D6/00

CPC分类号： H01F41/0266 ,  B22F3/12 ,  B22F3/24 ,  B22F3/26 ,  B22F2003/248 ,  C21D6/00 ,  H01F1/0577 ,  H01F41/005 ,  H01F41/0293

摘要： The present invention provides a method for preparing a permanent magnet material, the method comprising coating step and infiltrating step, wherein, coating a rare earth element-containing substance on the surface of a permanent magnet, the magnet having a thickness of 10 mm or less at least in one direction, then placing the magnet into a container, vacuuming to an atmospheric pressure of below 10 Pa, closing the passageway, and then heat treating the closed container. Using the method of the present invention enables the rare earth element to infiltrate homogeneously with a high permeability. In addition, the present invention may have a lower production cost, significantly increase coercive force of the permanent magnet material, but decrease the remanence very little.

摘要翻译： 本发明提供一种永久磁铁材料的制备方法，其特征在于，包括上述步骤和渗透工序，其中，在永久磁铁表面上涂覆含有稀土元素的物质，其厚度为10mm以下 至少在一个方向上，然后将磁体放置在容器中，抽真空至低于10Pa的大气压力，关闭通道，然后热处理密闭容器。 使用本发明的方法能够使稀土元素以高渗透性均匀地渗透。 此外，本发明可以具有较低的生产成本，显着增加了永久磁铁材料的矫顽力，但是减少了剩磁。

公开(公告)号：US20170062105A1

公开(公告)日：2017-03-02

申请号：US15060123

申请日：2016-03-03

申请人： Tianhe (Baotou) Advanced Tech Magnet Co., Ltd.

发明人： Yi Dong ,  Shulin Diao ,  Haibo Yi ,  Shujie Wu ,  Zhanjiang Hu ,  Qian Zhang ,  Gazhen Liu ,  Juchang Miao ,  Yi Yuan ,  Ya Chen ,  Wenjie Yuan

IPC分类号： H01F1/057 ,  B22F9/02 ,  B22F9/04 ,  B22F3/24

CPC分类号： H01F1/0577 ,  B22F3/24 ,  B22F9/023 ,  B22F9/04 ,  B22F2003/248 ,  B22F2009/044 ,  H01F41/0293

摘要： The present invention provides a rare earth permanent magnet material and manufacturing method thereof. The manufacturing method of the present invention comprises a multi-arc ion plating step and a infiltrating step, wherein multi-arc ion plating process is adopted to deposit a metal containing a heavy rare earth element on a surface of a sintered neodymium-iron-boron magnet which has a thickness of 10 mm or less in at least one direction; and then heat treatment is performed on the sintered neodymium-iron-boron after deposition. The sum of an intrinsic coercive force (Hcj, in unit of kOe) and a maximum magnetic energy product ((BH)max, in unit of MGOe) of the permanent magnet material of the present invention is 66.8 or more. Moreover, the manufacturing method of the present invention has high production efficiency and does not increase harmful substances, and the price of devices is relatively low.

摘要翻译： 本发明提供一种稀土永磁材料及其制造方法。 本发明的制造方法包括多弧离子镀步骤和渗透工序，其中采用多弧离子电镀工艺将含有重稀土元素的金属沉积在烧结钕铁硼 在至少一个方向上具有10mm或更小的厚度的磁体; 然后在沉积后对烧结的钕 - 铁 - 硼进行热处理。 本发明的永久磁铁材料的固有矫顽力（Hcj，以kOe为单位）和最大磁能积（（BH）max，以MGOe为单位）的总和为66.8以上。 此外，本发明的制造方法生产效率高，不会增加有害物质，装置价格相对较低。

公开(公告)号：US09548157B2

公开(公告)日：2017-01-17

申请号：US13384896

申请日：2011-03-29

申请人： Makoto Iwasaki ,  Ryota Kunieda ,  Fumitaka Baba ,  Satoshi Tanaka ,  Yoshinori Fujikawa

发明人： Makoto Iwasaki ,  Ryota Kunieda ,  Fumitaka Baba ,  Satoshi Tanaka ,  Yoshinori Fujikawa

IPC分类号： H01F41/00 ,  H01F41/02 ,  C21D6/00 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F7/02 ,  H01F1/057

CPC分类号： H01F41/0293 ,  B22F2207/01 ,  C21D6/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/0577 ,  H01F7/02

摘要： The present invention provides a sintered magnet having superior residual magnetic flux density and coercive force. The sintered magnet of the present invention comprises a group of R-T-B based rare earth magnet crystal particles 2 having a core 4 and a shell 6 covering the core 4, the mass ratio of a heavy rare earth element in the shell 6 is higher than the mass ratio of a heavy rare earth element in the core 4, and the thickest part of the shell 6 in the crystal particles 2 faces a grain boundary triple junction 1. A lattice defect 3 is formed between the core 4 and the shell 6.

摘要翻译： 本发明提供了具有优异的剩余磁通密度和矫顽力的烧结磁体。 本发明的烧结磁体包括一组具有核心4的RTB基稀土磁体晶体颗粒2和覆盖核心4的壳体6，壳体6中的重稀土元素的质量比高于质量 芯4中的重稀土元素的比例和晶体颗粒2中的壳6的最厚部分面对晶界三重结1.在芯4和壳6之间形成晶格缺陷3。

公开(公告)号：US20160284468A1

公开(公告)日：2016-09-29

申请号：US14915801

申请日：2014-09-01

申请人： HITACHI METALS, LTD.

发明人： Ryouichi YAMAGATA ,  Rintaro ISHII ,  Futoshi KUNIYOSHI ,  Teppei SATOH

IPC分类号： H01F41/02 ,  B22F3/24

CPC分类号： H01F41/0266 ,  B22F3/24 ,  B22F2003/248 ,  C21D6/00 ,  C22C33/02 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0293

摘要： Disclosed is a method for producing a magnet, including a step of preparing a magnet represented by the formula: uRwBxGayCuzAlqM(balance)T, where RH is 5% or less, 0.20≦x≦0.70, 0.07≦y≦0.2, 0.05≦z≦0.5, 0≦q≦0.1; when 0.40≦x≦0.70, v and w satisfy the following inequality expressions: 50w−18.5≦v≦50w−14, and −12.5w+38.75≦v≦−62.5w+86.125; and, when 0.20≦x≦0.40, v and w satisfy the following inequality expressions: 50w−18.5≦v≦50w−15.5 and −12.5w+39.125≦v≦−62.5w+86.125, and x satisfy the following inequality expression: −(62.5w+v −81.625)/15+0.5≦x≦−(62.5w+v−81.625)/15+0.8; a high-temperature heat treatment step of heating the magnet to a temperature of 730° C. or higher and 1,020° C. or lower, and then cooling to 300° C. at a cooling rate of 20° C./min; and a low-temperature heat treatment step of heating the magnet to a temperature of 440° C. or higher and 550° C. or lower.

摘要翻译： 公开了一种制造磁体的方法，包括以下公式制备磁铁的步骤：uRwBxGayCuzAlqM（余量）T，其中RH为5％以下，0.20≤x≤0.70,0.07≤y≤0.2,0.05≤z ≤0.5,0≤q≤0.1; 当0.40≤x≤0.70时，v和w满足以下不等式：50w-18.5≤v≤50w-14，-12.5w +38.75≤v≤-62.5w + 86.125; 并且当0.20≤x≤0.40时，v和w满足以下不等式：50w-18.5≤v≤50w-15.5和-12.5w +39.125≤v≤-62.5w + 86.125，x满足以下不等式： - （62.5w + v -81.625）/15+0.5宜克斯 - （62.5w + v-81.625）/15+0.8; 将该磁体加热至730℃以上且1020℃以下的高温热处理工序，然后以20℃/分钟的冷却速度冷却至300℃。 以及将磁体加热至440℃以上且550℃以下的低温热处理工序。

公开(公告)号：US09415444B2

公开(公告)日：2016-08-16

申请号：US13382587

申请日：2010-07-12

申请人： Futoshi Kuniyoshi

发明人： Futoshi Kuniyoshi

IPC分类号： H01F41/02 ,  H01F7/02 ,  B22F3/24 ,  C22C28/00 ,  C22C33/02 ,  C22C19/07 ,  C22C38/00 ,  C22F1/10 ,  C22F1/16 ,  H01F1/057

CPC分类号： B22F3/24 ,  B22F2003/241 ,  C22C19/07 ,  C22C28/00 ,  C22C33/0278 ,  C22C38/005 ,  C22C2202/02 ,  C22F1/10 ,  C22F1/16 ,  H01F1/0577 ,  H01F41/0293

摘要： A method for producing a sintered R-T-B based magnet includes the steps of: providing a sintered R-T-B based magnet body 1; providing an RH diffusion source 2 including a metal or an alloy of a heavy rare-earth element RH (which is at least one of Dy an Tb); loading the sintered magnet body 1 and the RH diffusion source 2 into a processing chamber 3 so that the magnet body 1 and the diffusion source 2 are movable relative to each other and brought close to, or in contact with, each other; and performing an RH diffusion process by conducting a heat treatment on the sintered R-T-B based magnet body 1 and the RH diffusion source 2 at a temperature of 500° C. to 850° C. for at least 10 minutes while moving the magnet body 1 and the diffusion source 2 either continuously or discontinuously in the processing chamber 3.

摘要翻译： 制造R-T-B系烧结磁体的方法包括以下步骤：提供R-T-B系烧结磁体1; 提供包括重稀土元素RH（其为Dy和Tb中的至少一种）的金属或合金的RH扩散源2; 将烧结磁体1和RH扩散源2加载到处理室3中，使得磁体1和扩散源2相对于彼此可移动并且彼此接近或接触; 并且通过在温度为500℃至850℃的温度下在基于RTB的磁体1和RH扩散源2上进行热处理至少10分钟进行RH扩散处理，同时移动磁体1和 扩散源2在处理室3中连续地或不连续地。

公开(公告)号：US20160163435A1

公开(公告)日：2016-06-09

申请号：US14906682

申请日：2014-08-08

申请人： TDK CORPORATION

发明人： Masashi MIWA ,  Haruna NAKAJIMA ,  Isao KANADA

IPC分类号： H01F1/053

CPC分类号： H01F1/0536 ,  H01F1/0577 ,  H01F41/0293

摘要： The present invention provides an R-T-B based sintered magnet having excellent corrosion resistance together with good magnetic properties. The R-T-B based sintered magnet contains R2T14B crystal grains, wherein, an R—Ga—Co—Cu—N concentrated part exists in a grain boundary formed between or among two or more adjacent R2T14B crystal grains, and the concentrations of R, Ga, Co, Cu and N in the R—Ga—Co—Cu—N concentrated part are higher than those in the R2T14B crystal grains respectively.

摘要翻译： 本发明提供了具有优异的耐腐蚀性和良好磁性的R-T-B系烧结磁体。 RTB型烧结磁体含有R2T14B晶粒，其中R-Ga-Co-Cu-N浓度部分存在于两个或更多相邻的R2T14B晶粒之间形成的晶界中，R，Ga，Co的浓度 ，R-Ga-Co-Cu-N浓缩部分的Cu和N分别高于R2T14B晶粒中的Cu和N。

公开(公告)号：US09324494B2

公开(公告)日：2016-04-26

申请号：US13809198

申请日：2011-07-11

申请人： Futoshi Kuniyoshi ,  Shohji Nakayama

发明人： Futoshi Kuniyoshi ,  Shohji Nakayama

IPC分类号： H01F41/02 ,  B22F3/24 ,  C21D9/00 ,  C22C33/02 ,  C22C38/00 ,  C23C10/28 ,  F27B7/02 ,  F27B7/16 ,  F27B7/22 ,  F27B7/33 ,  C22C1/02 ,  H01F1/057

CPC分类号： H01F41/0293 ,  B22F3/24 ,  C21D9/0018 ,  C21D9/0031 ,  C21D9/0056 ,  C21D9/0068 ,  C21D2281/00 ,  C22C1/02 ,  C22C33/0278 ,  C22C38/00 ,  C23C10/28 ,  F27B7/02 ,  F27B7/16 ,  F27B7/22 ,  F27B7/33 ,  H01F1/0577

摘要： A processing system according to the present invention includes: a diffusion processing section 10 which heats a sintered R-T-B based magnet body 1 and an RH diffusion source 2 made of either a metal or alloy of a heavy rare-earth element RH (which is at least one of Dy and Tb) while rotating; a sorting section 20 which selectively sorts the RH diffusion source 2 from the sintered R-T-B based magnet body 1 when the diffusion source and the magnet body come from the diffusion processing section 10; and a heat treatment processing section 30 which conducts a heat treatment process on the sintered R-T-B based magnet body 1, in which the heavy rare-earth element RH has been diffused and from which the RH diffusion source 2 has been removed.

摘要翻译： 根据本发明的处理系统包括：扩散处理部分10，其加热基于RTB的磁体1和由稀土元素RH（至少为重金属）的金属或合金制成的RH扩散源2 Dy和Tb之一）旋转; 分选部20，其在扩散源和磁体来自扩散处理部10时，从烧结的R-T-B系磁体1选择性地分选RH扩散源2; 以及对已经扩散了重稀土类元素RH并且从其中去除了RH扩散源2的烧结的R-T-B系磁体1进行热处理的热处理处理部30。