公开(公告)号：US20190153565A1

公开(公告)日：2019-05-23

申请号：US16257864

申请日：2019-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Jinbae KIM ,  Yangwoo BYUN ,  Sanggeun CHO

IPC: C22C12/00 ,  B22F1/00 ,  H01F1/055 ,  H01F1/057 ,  H01F1/059 ,  H01F41/02 ,  C22F1/16 ,  B22F9/04 ,  B22F3/16 ,  B22D11/00 ,  B22F3/087 ,  B22F3/105 ,  B22F3/14 ,  B22F3/15

Abstract: The present invention relates to a method of preparing an anisotropic complex sintered magnet having MnBi, that includes: (a) preparing a non-magnetic phase MnBi-based ribbon by a rapidly solidification process (RSP); (b) heat treating the non-magnetic phase MnBi-based ribbon to convert the non-magnetic phase MnBi-based ribbon into a magnetic phase MnBi-based ribbon; (c) grinding the magnetic phase MnBi-based ribbon to form a MnBi hard magnetic phase powder; (d) mixing the MnBi hard magnetic phase powder with a rare-earth hard magnetic phase powder; (e) magnetic field molding the mixture obtained in step (d) by applying an external magnetic field to form a molded article; and (f) sintering the molded article.

公开(公告)号：US20140070130A1

公开(公告)日：2014-03-13

申请号：US13962130

申请日：2013-08-08

Applicant: Industry-University Cooperation Foundation Hanyang University ERICA Campus ,  LG ELECTRONICS INC.

Inventor： Namseok KANG ,  Jinbae KIM ,  Yongho CHOA ,  Jongyoul KIM ,  Gukhwan AN ,  Sanggeun CHO

IPC: H01F1/01

CPC classification number: H01F1/01 ,  H01F1/113 ,  H01F1/37 ,  H01F41/0246 ,  H01F41/0266

Abstract: A ferrite magnet with salt includes 40 to 99.9 weight % of ferrite and 0.1 to 60 weight % of salt, wherein the salt has a melting point lower than a synthetic temperature of the ferrite, and the salt is melted to form a matrix between the ferrite particles, and a manufacturing thereof. The ferrite magnet with salt has advantages in terms of process conditions due to fast synthesis reaction at low temperatures compared to typical magnets, easily obtaining nano-sized particles having high crystallinity, preventing cohesion between particles and particle growth by molten salt, allowing sintering at temperatures lower than typical during the molding and sintering processes for producing a ferrite magnet with salt due to synthesized ferrite magnetic powder with salt thus preventing the deterioration of magnetic characteristics due to particle growth, and allowing alignment in the direction of magnetization easy axis to obtain higher magnetic characteristics.

Abstract translation: 具有盐的铁氧体磁体包含40至99.9重量％的铁素体和0.1至60重量％的盐，其中盐的熔点低于铁素体的合成温度，并且盐被熔化以在铁素体之间形成基质 颗粒及其制造。 具有盐的铁氧体磁体在工艺条件方面具有优势，因为与典型的磁体相比，在低温下快速的合成反应，容易获得具有高结晶度的纳米尺寸的颗粒，防止颗粒之间的内聚和通过熔融盐的颗粒生长，允许在温度 低于典型的用于由于合成的铁氧体磁性粉末与盐制造具有盐的铁氧体磁体的模制和烧结过程，从而防止由于颗粒生长导致的磁特性的劣化，并且允许在易磁化方向上的取向以获得更高的磁性 特点

公开(公告)号：US20170323710A1

公开(公告)日：2017-11-09

申请号：US15526958

申请日：2015-06-24

Applicant: LG ELECTRONICS INC. ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS

Inventor： Jinbae KIM ,  Yongho CHOA ,  Jongryoul KIM ,  Hyoryoung LIM

IPC: H01F1/147 ,  H01Q9/04 ,  H01Q1/38 ,  H01Q9/16 ,  H01Q1/24

CPC classification number: H01F1/14708 ,  H01F1/0081 ,  H01Q1/243 ,  H01Q1/38 ,  H01Q9/0485 ,  H01Q9/16

Abstract: The present invention relates to a magnetic-dielectric composite for a high-frequency antenna substrate, and a manufacturing method therefor, the composite comprising: a porous insulating dielectric substrate including an upper surface, a lower surface and lateral surfaces, and having a plurality of pores penetrating the upper surface and the lower surface; and soft ferrite nano-wires provided within the pores, wherein the soft ferrite nano-wires are encompassed by the insulating dielectric substrate so as to be separated from each other. The present invention controls a dielectric constant and can minimize eddy current loss by having a structure in which the soft ferrite nano-wires are provided within the pores of the insulating dielectric substrate and in which the soft ferrite nano-wires are encompassed by the insulating dielectric substrate so as to be separated from each other.

公开(公告)号：US20160322134A1

公开(公告)日：2016-11-03

申请号：US15153417

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Jinbae KIM ,  Yangwoo BYUN

IPC: H01F1/01 ,  B22F3/16 ,  B22F9/04 ,  B22F1/00

Abstract: Disclosed are an MnBi sintered magnet exhibiting excellent thermal stability as well as excellent magnetic characteristics at high temperature, an MnBi anisotropic complex sintered magnet, and a method of preparing the same.

Abstract translation: 公开了具有优异的热稳定性以及高温下的优异磁特性的MnBi烧结磁体，MnBi各向异性复合烧结磁体及其制备方法。

公开(公告)号：US20160314882A1

公开(公告)日：2016-10-27

申请号：US15153199

申请日：2016-05-12

Applicant: LG ELECTRONICS INC.

Inventor： Jinbae KIM ,  Yangwoo BYUN

IPC: H01F1/057 ,  H01F1/059 ,  H01F41/02 ,  H01F1/053

Abstract: The present invention relates to an anisotropic complex sintered magnet including MnBi with magnetic characteristics enhanced and an atmospheric sintering method for preparing the same. The anisotropic complex sintered magnet including MnBi according to the present invention may implement excellent magnetic characteristics, and thus may replace rare earth bond magnets in the related art, and a continuous process is enabled because the magnet is prepared by an atmospheric sintering method, and a sintering method used in the permanent magnet process in the related art is used as it is, so that the anisotropic complex sintered magnet is economical.

Abstract translation: 本发明涉及包含具有磁特性的MnBi的各向异性复合烧结磁体及其制备方法。 包括根据本发明的MnBi的各向异性复合烧结磁体可以实现优异的磁特性，并且因此可以替代现有技术中的稀土键磁体，并且由于磁体是通过大气烧结法制备的，所以可以进行连续的工艺， 直接使用现有技术的永久磁铁工艺中使用的烧结方法，因此各向异性复合烧结磁体是经济的。

公开(公告)号：US20160168660A1

公开(公告)日：2016-06-16

申请号：US14837800

申请日：2015-08-27

Applicant: LG ELECTRONICS INC.

Inventor： Jinbae KIM ,  Yangwoo BYUN ,  Sanggeun CHO

IPC: C22C12/00 ,  H01F1/059 ,  B22F1/00 ,  B22F3/16 ,  B22D11/00 ,  B22F3/105 ,  B22F3/15 ,  B22F3/14 ,  B22F9/04 ,  C22F1/16 ,  H01F1/055 ,  B22F3/087

CPC classification number: C22C12/00 ,  B22D11/001 ,  B22F1/0003 ,  B22F1/0059 ,  B22F3/087 ,  B22F3/105 ,  B22F3/14 ,  B22F3/15 ,  B22F3/16 ,  B22F9/04 ,  B22F2003/1051 ,  B22F2003/1054 ,  B22F2009/043 ,  B22F2301/00 ,  B22F2301/30 ,  B22F2301/355 ,  B22F2301/45 ,  B22F2303/01 ,  B22F2304/10 ,  C22F1/16 ,  H01F1/0557 ,  H01F1/0577 ,  H01F1/059 ,  H01F41/0266 ,  H01F41/0273

Abstract: The present invention relates to a method of preparing an anisotropic complex sintered magnet having MnBi, that includes: (a) preparing a non-magnetic phase MnBi-based ribbon by a rapidly solidification process (RSP); (b) heat treating the non-magnetic phase MnBi-based ribbon to convert the non-magnetic phase MnBi-based ribbon into a magnetic phase MnBi-based ribbon; (c) grinding the magnetic phase MnBi-based ribbon to form a MnBi hard magnetic phase powder; (d) mixing the MnBi hard magnetic phase powder with a rare-earth hard magnetic phase powder; (e) magnetic field molding the mixture obtained in step (d) by applying an external magnetic field to form a molded article; and (f) sintering the molded article.

Abstract translation: 本发明涉及一种制备具有MnBi的各向异性复合烧结磁体的方法，其包括：（a）通过快速凝固过程（RSP）制备非磁性MnBi系带; （b）热处理非磁性相MnBi基带以将非磁性相MnBi基带转变为基于MnBi的磁性带; （c）研磨磁性MnBi基带以形成MnBi硬磁相粉末; （d）将MnBi硬磁性相粉末与稀土类硬磁性粉末混合; （e）通过施加外部磁场对步骤（d）中获得的混合物进行磁场成型以形成模制品; 和（f）烧结模制品。

公开(公告)号：US20160035487A1

公开(公告)日：2016-02-04

申请号：US14741105

申请日：2015-06-16

Applicant: LG ELECTRONICS INC.

Inventor： Jinbae KIM ,  Yangwoo BYUN

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

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

Abstract: 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.

Abstract translation: 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。