公开(公告)号：US20180226180A1

公开(公告)日：2018-08-09

申请号：US15750238

申请日：2015-08-24

Applicant: Nissan Motor Co., Ltd.

Inventor： Yoshio KAWASHITA ,  Masaya ARAI ,  Ryou MURAKAMI ,  Shinichirou FUJIKAWA

IPC: H01F1/053 ,  H01F41/02 ,  B22F1/02

CPC classification number: H01F1/0533 ,  B22F1/0062 ,  B22F1/0085 ,  B22F1/0088 ,  B22F1/02 ,  B22F3/14 ,  B22F2301/45 ,  H01F1/059 ,  H01F1/083 ,  H01F1/09 ,  H01F41/0266

Abstract: A bond magnet molding is provided that contains coated magnetic particles having at least two layers of an oxide layer of 1-20 nm on a surface of magnetic particles and an organic layer of 1-100 nm on an outer side of the oxide layer. The bond magnet molding preferably includes a Zn alloy as a binder. The Zn alloy has a strain rate sensitivity exponent (m value) of not less than 0.3 and an elongation at break of not less than 50%. The magnet particles have a nitrogen compound containing Sm and Fe that are solidified using the binder at a temperature not higher than a molding temperature.

公开(公告)号：US20100072138A1

公开(公告)日：2010-03-25

申请号：US12562708

申请日：2009-09-18

Applicant: Tatsuoki Kohno ,  Akiko Suzuki ,  Shinji Murai ,  Ichiro Tai

Inventor： Tatsuoki Kohno ,  Akiko Suzuki ,  Shinji Murai ,  Ichiro Tai

IPC: B03C1/00 ,  C02F1/28 ,  H01F1/00

CPC classification number: B03C1/01 ,  B03C2201/18 ,  B82Y25/00 ,  C02F1/285 ,  C02F1/288 ,  C02F1/488 ,  C02F2101/32 ,  H01F1/061 ,  H01F1/09 ,  H01F1/20 ,  H01F1/33

Abstract: The present invention provides a functional powder capable of effectively adsorbing impurities in water treatment. The powder can be rapidly separated by use of magnetic force, and hence is excellent in workability. This functional powder comprises magnetic particles having surfaces modified with hydrophobic groups and hydrophilic groups loaded thereon. The hydrophobic groups have a function of adsorbing the impurities, and the hydrophilic groups have a function of dispersing the powder stably in water. The numbers M and N of the hydrophobic groups and the hydrophilic groups, respectively, satisfy the condition of 0.2

Abstract translation: 本发明提供能够在水处理中有效吸附杂质的功能性粉末。 可以通过使用磁力快速分离粉末，因此加工性优异。 该功能性粉末包括具有用疏水性基团改性并具有亲水基团的表面的磁性颗粒。 疏水基具有吸附杂质的功能，亲水基具有将粉末稳定分散在水中的功能。 疏水基团和亲水基团的M和N分别满足0.2

公开(公告)号：US20090236558A1

公开(公告)日：2009-09-24

申请号：US12244240

申请日：2008-10-02

Applicant: Takako Kobayashi ,  Yoshihiro Inaba

Inventor： Takako Kobayashi ,  Yoshihiro Inaba

IPC: B32B5/16 ,  H01F1/44 ,  G03G15/08

CPC classification number: H01F41/16 ,  G03G15/0855 ,  G03G15/0865 ,  H01F1/0027 ,  H01F1/061 ,  H01F1/09 ,  H01F1/442 ,  Y10T428/2982

Abstract: A magnetic polymer particle develops a magnetic latent image. The magnetic polymer particle includes a magnetic component, a polymer, and a colorant. The magnetic component is a magnetic particle containing iron having a number average particle diameter of from about 0.2 μm to about 1.2 μm. The magnetic particle is contained in one magnetic polymer particle in an amount of from 1 to 10 particles. The number average particle diameter of the magnetic polymer particle is from about 2.0 μm to about 7.0 μm.

Abstract translation: 磁性聚合物颗粒形成磁性潜像。 磁性聚合物颗粒包括磁性组分，聚合物和着色剂。 磁性组分是含有数均粒径为约0.2μm至约1.2μm的铁的磁性颗粒。 磁性颗粒以1至10个颗粒的量包含在一个磁性聚合物颗粒中。 磁性聚合物颗粒的数均粒径为约2.0μm至约7.0μm。

公开(公告)号：US20070059557A1

公开(公告)日：2007-03-15

申请号：US11520624

申请日：2006-09-14

Applicant: Yoshiyuki Shoji ,  Toshihiko Ueyama

Inventor： Yoshiyuki Shoji ,  Toshihiko Ueyama

IPC: G11B5/708 ,  B32B15/00 ,  H01F1/00

CPC classification number: H01F1/09 ,  G11B5/70621 ,  G11B5/70647 ,  G11B5/70657 ,  G11B5/70663 ,  G11B5/70689 ,  G11B5/714 ,  H01F1/065 ,  Y10T428/2982 ,  Y10T428/32

Abstract: A magnetic powder is provided composed of particles having a balanced shape and distribution, the particles having a small, uniform volume, making it possible to achieve improved density and reliability of a coating type magnetic recording medium. The magnetic powder has Fe as a main component, and is comprised of particles having a cross-section perpendicular to the particle major axis that is substantially round or elliptical, wherein a standard geometrical deviation indicating the variation in cross-sectional area thereof is within the range of 1.01 to 3.0. The invention is also directed to a magnetic powder in which the standard geometrical deviation indicating the variation in the particle volume is within the range of 1.01 to 4.0, and the standard geometrical deviation indicating variation in the flat acicularity is within 1.01 to 2.0.

Abstract translation: 由具有平衡形状和分布的颗粒构成的磁粉由于具有体积小，体积均匀的粒子，能够提高涂布型磁记录介质的密度和可靠性。 该磁性粉末以Fe为主成分，由具有垂直于大致圆形或椭圆形的粒子长轴的截面的粒子构成，其中，表示其横截面积的变化的标准几何偏差在 范围为1.01〜3.0。 本发明还涉及一种磁性粉末，其中指示颗粒体积变化的标准几何偏差在1.01至4.0的范围内，并且指示平针对性变化的标准几何偏差在1.01至2.0之内。

公开(公告)号：US07163591B2

公开(公告)日：2007-01-16

申请号：US10734544

申请日：2003-12-12

Applicant: Andrew S. Kim ,  Seok Namkung ,  Dong-Hwan Kim

Inventor： Andrew S. Kim ,  Seok Namkung ,  Dong-Hwan Kim

IPC: H01F1/053 ,  H01F1/057

CPC classification number: H01F1/09 ,  H01F1/0573

Abstract: Disclosed is a method of preparing a micro-structured powder for bonded magnets having high coercivity, which is advantageous in terms of low preparation costs by recycling magnet scraps, simplified mass production, minimal environmental contamination by such a recycling process, and the preparation of stable anisotropic powders having high coercivity. Further, a magnet powder prepared by the above method is provided. The current method is characterized in that R—Fe—B type anisotropic sintered magnets or scraps thereof are crushed to prepare 50–500 μm sized magnet powders, which are then mixed with 1–10 wt % of rare earth fluoride (RF3) powders and thermally treated at high temperatures (500–1100° C.) in a vacuum or an inert gas, to cause the change of matrix-near surface and grain boundary of the powders. Thus obtained powders include a matrix phase having R2Fe14B crystal structure, a R-rich grain boundary phase containing rare earth fluoride, and other phases, in which the matrix phase has an average grain size of 1–20 μm, and the powders have an average size of 50–500 μm with superior magnetic characteristics of (BH)max≧20 MGOe and iHc≧5 kOe.

Abstract translation: 公开了一种制备具有高矫顽力的粘结磁体的微结构粉末的方法，其通过回收磁体废料，简化的批量生产，通过这种再循环过程的最小环境污染而制备成本低，并且制备稳定的 具有高矫顽力的各向异性粉末。 此外，提供通过上述方法制备的磁铁粉末。 目前的方法的特征在于将R-Fe-B型各向异性烧结磁体或其废料压碎以制备50-500毫米尺寸的磁体粉末，然后与1-10重量％的稀土氟化物（RF < 3）粉末，并在真空或惰性气体中在高温（500-1100℃）下进行热处理，导致粉末的基质 - 近表面和晶界的变化。 由此获得的粉末包括具有R 2 Fe 14 B晶体结构的基质相，含有稀土氟化物的富R晶界相和其它相，其中基质 相的平均粒径为1-20μm，粉末的平均粒径为50-500μm，具有优异的（BH）max> = 20MGOe和iHc> 5kOe的磁特性。

公开(公告)号：US07147686B2

公开(公告)日：2006-12-12

申请号：US10600602

申请日：2003-06-23

Applicant: Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano

Inventor： Tetsurou Tayu ,  Hideaki Ono ,  Munekatsu Shimada ,  Makoto Kano

IPC: C22C29/14

CPC classification number: H01F1/09 ,  H01F1/0572 ,  H01F41/0293 ,  H02K1/02

Abstract: A rare earth magnet comprises rare earth magnet particles and a rare earth oxide being present between the rare earth magnet particles. The rare earth oxide is represented by a following general formula (I): R2O3  (I) where R is any one of terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium.

Abstract translation: 稀土磁体包括稀土磁体颗粒和稀土磁体颗粒之间存在的稀土氧化物。 稀土氧化物由以下通式（I）表示：<？in-line-formula description =“In-line Formulas”end =“lead”？> R＆lt; 2＆lt; 其中R是铽，镝，钬，铒，ium，镱和镥中的任何一种，其中R是任意一种铽，镝，镱，镥， 。

公开(公告)号：US20050048282A1

公开(公告)日：2005-03-03

申请号：US10912156

申请日：2004-08-06

Applicant: Kimitaka Sato

Inventor： Kimitaka Sato

IPC: H01F1/053 ,  B22F1/00 ,  B22F1/02 ,  G11B5/712 ,  H01F1/09 ,  H01F1/33 ,  B32B15/02 ,  B32B5/16

CPC classification number: B22F1/0062 ,  B22F1/02 ,  B22F2998/00 ,  B22F2998/10 ,  G11B5/712 ,  H01F1/09 ,  H01F1/33 ,  Y10T428/256 ,  Y10T428/2991 ,  B22F1/0085 ,  B22F1/0088

Abstract: A fine magnetic powder suitable for magnetic tape capable of high-density magnetic recording is provided that helps to prevent degradation of tape surface property and durability with increasing fineness of the magnetic powder particles, which magnetic powder consists of particles composed chiefly of Fe whose surface layer contains an oxide of at least one of Al, Si and Ra (where Ra represents one or more rare earth elements, defined as including Y), has an average particle diameter of less than 70 nm, the number of basic sites on the particle surface of not greater than 0.85 sites/nm2, and the number of acid sites on the particle surface of not greater than 0.75 sites/nm2.

Abstract translation: 提供适用于能够进行高密度磁记录的磁带的精细磁性粉末，其有助于防止磁性粉末颗粒的细度随着磁性粉末颗粒的细度而降低胶带表面性能和耐久性，该磁性粉末由主要由Fe组成的颗粒组成，其表面层 包含Al，Si和Ra中的至少一种的氧化物（其中Ra表示一种或多种稀土元素，定义为Y），其平均粒径小于70nm，颗粒表面上的碱性位点数 不大于0.85个位点/ nm 2，并且颗粒表面上的酸位数不大于0.75个位点/ nm 2。

公开(公告)号：US5647886A

公开(公告)日：1997-07-15

申请号：US303233

申请日：1994-09-08

Applicant: Atsunori Kitazawa ,  Toshiyuki Ishibashi ,  Koji Akioka

Inventor： Atsunori Kitazawa ,  Toshiyuki Ishibashi ,  Koji Akioka

IPC: H01F1/03 ,  H01F1/055 ,  H01F1/058 ,  H01F1/059 ,  H01F1/08 ,  H01F1/09 ,  H01F1/26 ,  B22F1/00

CPC classification number: H01F1/059 ,  H01F1/0302 ,  H01F1/0306 ,  H01F1/055 ,  H01F1/0557 ,  H01F1/0558 ,  H01F1/058 ,  H01F1/083 ,  H01F1/09 ,  H01F1/26

Abstract: A magnetic powder and a permanent magnet are provided which have magnetic properties enhanced by magnetic interaction. Disclosed are a magnetic powder comprising a mixture of two or more powders including a magnetic powder A (residual magnetic flux density: BrA, coercive force: HcA) and a magnetic powder B (residual magnetic flux density: BrB, coercive force: HcB) of which the residual magnetic flux densities and the coercive forces have the following relationships: BrA>BrB and HcA

Abstract translation: 提供具有通过磁相互作用增强的磁特性的磁粉和永磁体。 公开了包括两种或更多种粉末的混合物的磁性粉末，其包括磁粉A（剩余磁通密度：BrA，矫顽力：HcA）和磁粉B（剩余磁通密度：BrB，矫顽力：HcB） 残留磁通密度和矫顽力具有以下关系：BrA> BrB和HcA

公开(公告)号：US5328618A

公开(公告)日：1994-07-12

申请号：US923569

申请日：1992-08-03

Applicant: Bijan K. Miremadi ,  Stanley R. Morrison ,  Konrad Colbow

Inventor： Bijan K. Miremadi ,  Stanley R. Morrison ,  Konrad Colbow

IPC: C01G1/12 ,  C01G39/06 ,  C10M103/02 ,  C10M103/06 ,  H01F1/09 ,  C04B35/00

CPC classification number: H01F1/09 ,  C01G1/12 ,  C01G39/06 ,  C10M103/02 ,  C10M103/06 ,  C10M2201/041 ,  C10M2201/042 ,  C10M2201/066

Abstract: A lubricant has the formula X:Y, wherein X is a layered material selected from the group consisting of layered transition metal dichalcogenides and graphite. Y is a magnetic inclusion between layers of X. The lubricant is made by adding X to a solution containing ions of Y. The solution is continuously mixed and dried. The Y is then reduced to a metallic form.

Abstract translation: 润滑剂具有式X：Y，其中X是选自层状过渡金属二硫属化物和石墨的层状材料。 Y是X层之间的磁性夹杂物。通过将X加入到含有Y离子的溶液中来制备润滑剂。将溶液连续混合并干燥。 然后将Y还原成金属形式。

公开(公告)号：US3198717A

公开(公告)日：1965-08-03

申请号：US21485262

申请日：1962-08-06

Applicant: GEN ELECTRIC

Inventor： FALK RICHARD B

IPC: H01F1/09 ,  H01F1/20

CPC classification number: H01F1/09 ,  H01F1/20