公开(公告)号：US20180301275A1

公开(公告)日：2018-10-18

申请号：US16011887

申请日：2018-06-19

申请人： TDK CORPORATION

发明人： Toshio Tomonari ,  Tsutomu Kobayashi ,  Kazunori Arimitsu

IPC分类号： H01F27/28 ,  H01F1/047 ,  H01F17/04 ,  H01F27/24

CPC分类号： H01F27/2823 ,  H01F1/047 ,  H01F17/045 ,  H01F27/24 ,  H01F27/28

摘要： A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i−1th turn, ith turn, and i+1th turn. The ith turn of the first wire intersects with the ith turn of the second wire without intersecting each of the i−1th and i+1th turns of the second wire.

公开(公告)号：US20180221959A1

公开(公告)日：2018-08-09

申请号：US15427278

申请日：2017-02-08

申请人： FORD GLOBAL TECHNOLOGIES, LLC

发明人： Wanfeng Li

IPC分类号： B22F9/04 ,  C22C12/00 ,  C22C22/00 ,  B02C19/06 ,  B02C23/08 ,  B07B7/08 ,  H01F1/03

CPC分类号： B22F9/04 ,  B02C19/063 ,  B02C23/08 ,  B07B7/08 ,  B07B7/086 ,  B07B7/10 ,  B22F2009/044 ,  B22F2999/00 ,  C22C12/00 ,  C22C22/00 ,  H01F1/047 ,  C22C2202/02

摘要： A method of increasing volume ratio of magnetic particles in a MnBi alloy includes operating a jet miller fed with a MnBi alloy powder containing magnetic particles and non-magnetic particles with gas flow parameters selected such that, only for the magnetic particles, a gas drag force is greater than a centrifugal force within the jet miller to separate the magnetic particles from the non-magnetic particles.

公开(公告)号：US09968999B2

公开(公告)日：2018-05-15

申请号：US14516007

申请日：2014-10-16

申请人： COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

发明人： Nidhi Singh ,  Jiji Thomas Joseph Pulikkotil ,  Anurag Gupta ,  Kanika Anand ,  Ajay Dhar ,  Ramesh Chandra Budhani

IPC分类号： H01F41/02 ,  B22F3/10 ,  C22C12/00 ,  H01F1/047 ,  H01F1/08

CPC分类号： B22F3/10 ,  C22C12/00 ,  H01F1/047 ,  H01F1/08

摘要： Permanent magnets are used for several important applications, including dc electrical motors, wind turbines, hybrid automobile, and for many other applications. Modern widely used rare-earth based permanent magnet materials, such as Sm—Co and Nd—Fe—B, are generally intermetallic alloys made from rare earth elements and transition metals such as cobalt. However, the high costs of rare earth elements make the widespread use of these permanent magnets commercially unattractive. The present work focuses on producing a new permanent magnet material, with good magnetic properties, which is free from rare-earth elements and thus cost-effective. The present invention provides a process to synthesis boron doped manganese antimonide as an alternative to rare earth based permanent magnet materials. The boron doped manganese antimonide disclosed in this invention is free from rare-earth element with good magnetic properties. The material in the present study has been synthesized employing sequential combination of high energy ball milling, arc melting under argon atmosphere and again high energy ball milling followed by annealing. The annealed boron doped manganese antimonide shows improved magnetic properties as compared to manganese antimonide.

公开(公告)号：US20180114615A1

公开(公告)日：2018-04-26

申请号：US15572707

申请日：2016-05-13

申请人： DALIAN UNIVERSITY OF TECHNOLOGY

发明人： Wei ZHANG ,  Yingmin WANG ,  Yanhui LI ,  Dianguo MA

IPC分类号： H01F1/047 ,  C22C1/08 ,  C22C5/04 ,  C22C38/00 ,  C22C38/10 ,  B82Y30/00 ,  B82Y40/00

CPC分类号： H01F1/047 ,  B22F2999/00 ,  B82Y30/00 ,  B82Y40/00 ,  C22C1/08 ,  C22C5/04 ,  C22C38/002 ,  C22C38/10 ,  C22C2202/02 ,  H01F10/123 ,  H01F41/0253 ,  C22C1/05

摘要： A kind of nano-porous Fe—Pt alloys with strong permanent magnetism and a preparation method therefor. The nano-porous Fe—Pt alloys have the composition of FewCoxPtyPdz and are composed of an ordered hard magnetic L10-FePt phase, and have an integrated doubly-connected nano-porous structure with pore sizes of 10-50 nm, and ligament thicknesses of 20-80 nm. Under an applied magnetic field of 50 kOe, the coercivity, magnetization intensity and remanence of the alloys are 13.4-18.5 kOe, 40.4-56.3 emu/g and 28.3-37.4 emu/g, respectively. The master alloy ingots are prepared using electric arc melting or induction melting; the alloy ribbons are prepared using the single-roller melt-spinning equipment; the precursors mainly containing nano-composite phases of hard magnetic L10-FePt and soft magnetic Fe2B are obtained directly by the melt-spinning or obtained by conducting vacuum annealing on the melt-spun ribbons; and the nano-porous Fe—Pt alloys with a single L10-FePt phase are obtained by the electrochemical dealloying technique, thereby filling in the technical blank of nano-porous metal materials with permanent magnetism.

公开(公告)号：US20170229533A1

公开(公告)日：2017-08-10

申请号：US15410987

申请日：2017-01-20

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Hariklia Deligianni ,  William J. Gallagher ,  Maurice Mason ,  Eugene J. O'Sullivan ,  Lubomyr T. Romankiw ,  Naigang Wang

IPC分类号： H01L49/02 ,  H01F41/02 ,  H01L23/532 ,  H01F1/047 ,  H01L21/288 ,  H01L23/522

CPC分类号： H01L28/10 ,  H01F1/04 ,  H01F1/047 ,  H01F41/02 ,  H01F41/04 ,  H01F41/046 ,  H01F41/26 ,  H01L21/288 ,  H01L23/5227 ,  H01L23/53209 ,  H01L23/53242

摘要： An on-chip magnetic structure includes a palladium activated seed layer and a substantially amorphous magnetic material disposed onto the palladium activated seed layer. The substantially amorphous magnetic material includes nickel in a range from about 50 to about 80 atomic % (at. %) based on the total number of atoms of the magnetic material, iron in a range from about 10 to about 50 at. % based on the total number of atoms of the magnetic material, and phosphorous in a range from about 0.1 to about 30 at. % based on the total number of atoms of the magnetic material. The magnetic material can include boron in a range from about 0.1 to about 5 at. % based on the total number of atoms of the magnetic material.

公开(公告)号：US09685267B2

公开(公告)日：2017-06-20

申请号：US15132102

申请日：2016-04-18

申请人： TAIYO YUDEN CO., LTD.

发明人： Hitoshi Matsuura ,  Tomomi Kobayashi ,  Yoshikazu Okino ,  Hidemi Iwao ,  Kenichiro Nogi ,  Kenji Otake

IPC分类号： H01F5/00 ,  H01F27/28 ,  H01F17/00 ,  H01F1/047 ,  H01F1/08 ,  H01F27/255 ,  H01F27/29

CPC分类号： H01F27/2823 ,  H01F1/047 ,  H01F1/08 ,  H01F17/0033 ,  H01F27/255 ,  H01F27/2804 ,  H01F27/29 ,  H01F2027/2809

摘要： A coil component is of the type where a helical coil is directly contacting a magnetic body where such coil component still meets the demand for electrical current amplification. The coil component is structured in such a way that a helical coil is covered with a magnetic body. The magnetic body is mainly constituted by magnetic alloy grains and contains substantially no glass component, and each of the magnetic alloy grains has an oxide film of the grain on its surface.

公开(公告)号：US20160035487A1

公开(公告)日：2016-02-04

申请号：US14741105

申请日：2015-06-16

申请人： LG ELECTRONICS INC.

发明人： Jinbae KIM ,  Yangwoo BYUN

IPC分类号： H01F41/02 ,  C22C12/00 ,  C22C1/04 ,  H01F1/08 ,  B22F3/12 ,  B22F9/04 ,  H01F1/047 ,  C22F1/16 ,  C22C1/02

CPC分类号： H01F41/0266 ,  B22F3/12 ,  B22F9/04 ,  B22F2009/043 ,  C22C1/02 ,  C22C1/04 ,  C22C12/00 ,  C22F1/16 ,  H01F1/047 ,  H01F1/086

摘要： The method of preparing an MnBi-based magnetic substance according to the present invention includes: (a) preparing a mixed melt by simultaneously melting a manganese-based material and a bismuth-based material; (b) forming a non-magnetic MnBi-based ribbon by cooling the mixed melt; and (c) converting the non-magnetic MnBi-based ribbon into a magnetic MnBi-based ribbon by performing a heat treatment. The method for preparing an MnBi-based sintered magnet includes: (a) preparing a magnetic powder by pulverizing the MnBi-based magnetic substance; (b) molding the magnetic powder in a state where a magnetic field is applied; and (c) sintering the molded magnetic powder.

摘要翻译： 制备本发明的MnBi系磁性物质的方法包括：（a）通过同时熔融锰基材料和铋基材料来制备混合熔体; （b）通过冷却混合熔体形成非磁性MnBi系带; 和（c）通过进行热处理将非磁性MnBi基带转变成磁性MnBi基带。 制备MnBi系烧结磁体的方法包括：（a）通过粉碎MnBi系磁性物质制备磁性粉末; （b）在施加磁场的状态下成型磁粉; 和（c）烧结成型的磁性粉末。

公开(公告)号：US09136049B2

公开(公告)日：2015-09-15

申请号：US13499245

申请日：2009-11-10

申请人： Jung-Goo Lee ,  Chul-Jin Choi

发明人： Jung-Goo Lee ,  Chul-Jin Choi

IPC分类号： H01F1/08 ,  B22F1/00 ,  B82Y30/00 ,  C22C1/04 ,  H01F1/047

CPC分类号： H01F1/08 ,  B22F1/0018 ,  B22F2998/10 ,  B82Y30/00 ,  C22C1/04 ,  C22C1/0416 ,  H01F1/047 ,  B22F1/0003 ,  B22F3/02 ,  B22F9/12 ,  B22F1/0085

摘要： This invention relates to Mn—Al magnetic powders of a high coercive force which are obtained from Mn—Al alloy vaporized by plasma arc discharging, and a manufacturing method thereof.The Mn—Al magnetic powders are produced by discharging a plasma arc to a compact which is formed by compacting a blend containing 20-60% by weight of Mn powder and 40-80% by weight of Al powder, collecting nanoscale Mn—Al particles after cooling the vaporized blend, and heat-treating the particles.According to the present invention, the Mn—Al magnetic powders of light weight and enhanced corrosion resistance are produced at a low cost.

摘要翻译： 本发明涉及由通过等离子体电弧放电气化的Mn-Al合金获得的高矫顽力的Mn-Al磁粉及其制造方法。 通过将等离子体电弧放电到通过压制含有20-60重量％的Mn粉末和40-80重量％的Al粉末的共混物形成的压块来制造Mn-Al磁性粉末，收集纳米尺度的Mn-Al颗粒 在蒸发的混合物冷却后，对该颗粒进行热处理。 根据本发明，以低成本制造重量轻且耐腐蚀性提高的Mn-Al磁粉。

公开(公告)号：US20140370290A1

公开(公告)日：2014-12-18

申请号：US14300857

申请日：2014-06-10

申请人： TDK CORPORATION

发明人： Hirotaka YOKOTA ,  Masakazu HOSONO ,  Kiyoyuki MASUSAWA

IPC分类号： H01F1/11 ,  C01B21/06

CPC分类号： H01F1/11 ,  C01B21/0622 ,  C01P2006/12 ,  C01P2006/42 ,  C01P2006/80 ,  H01F1/047 ,  Y10T428/2982

摘要： The present invention provides an iron nitride based magnetic powder which comprises the Fe16N2 phases and the Fe4N phases. The iron nitride based magnetic powder of the present invention is obtained by subjecting the iron oxide or the starting material to an reduction treatment and a nitriding treatment, wherein the starting material is obtained by covering the surfaces of the iron oxide particles by a Si-based compound as required. The iron nitride based magnetic powder consists of 70 at % or more and 95 at or less of the phases of Fe16N2. compound and 5 at % or more and 30 at % or less of the phases of Fe4N compound in terms of Fe as measured by the Mossbauer spectra.

摘要翻译： 本发明提供一种包含Fe16N2相和Fe4N相的基于氮化铁的磁性粉末。 本发明的氮化铁基磁性粉末是通过对氧化铁或原料进行还原处理和氮化处理而获得的，其中起始材料是通过以Si为基础覆盖氧化铁颗粒的表面而获得的 根据需要复合。 铁氮化物磁性粉末由Fe16N2相的70at％以上且95以下的相组成。 化合物，以Fe计为5原子％以上且30原子％以下，Fe4N化合物相以Fe计，通过Mossbauer光谱测定。

公开(公告)号：US20110074529A1

公开(公告)日：2011-03-31

申请号：US12895793

申请日：2010-09-30

申请人： Ottmar Roth

发明人： Ottmar Roth

IPC分类号： H01F1/03 ,  H01F1/047 ,  B22D23/00 ,  C21D1/00 ,  B22D27/15

CPC分类号： H01F1/047 ,  C21D8/1222 ,  C21D8/1266 ,  H01F1/14708 ,  H01F41/0213

摘要： The invention relates to a magnetic strip, the strip having a magnetically easy direction axially parallel to a transverse axis of the strip. The strip is cut to length from a band of a magnetically semi-hard, crystalline alloy along a transverse axis of the band essentially corresponding to a width (b) of the strip. The band has a magnetically easy direction axially parallel to a longitudinal axis of the band.

摘要翻译： 本发明涉及一种磁条，该条带具有沿磁带方向轴向平行于该条带的横向轴线。 条带从磁性半硬质结晶合金的带沿着带的横向轴线切割成长度，基本上对应于条的宽度（b）。 带具有轴向平行于带的纵向轴线的易磁化方向。