公开(公告)号：US20210210996A1

公开(公告)日：2021-07-08

申请号：US17209326

申请日：2021-03-23

申请人： IHI Corporation

发明人： Haruki EGUCHI ,  Akihiro NOMURA ,  Natsuki YONEYAMA ,  Hiroo TAKAHASHI ,  Osamu HARASAKI ,  Hiroki YOSHIZAWA ,  Isao NAKANOWATARI

IPC分类号： H02K1/02 ,  H01F1/059 ,  H01F1/055 ,  H01F41/02

摘要： A method of manufacturing an Sm—Fe—N magnet includes a sealing step of filling a metal sheath with a magnet powder including an Sm—Fe—N compound as a main component and sealing the metal sheath, a Magnetic field applying step of applying a magnetic field to the magnet powder sealed in the metal sheath, and magnetizing the magnet powder by magnetically orienting the magnet powder and aligning a direction of magnetic orientation in one direction, a preliminary rolling step of preliminarily rolling the magnetically oriented magnet powder sealed in the metal sheath to make the magnetically oriented magnet powder into a green compact, and a pressurizing step of pressurizing the green compact sealed in the metal sheath and densifying the green compact to form a magnet body, wherein in the preliminary rolling step, the preliminary rolling is performed by lightly rolling the magnetically oriented magnet powder sealed in the metal sheath with a pressure smaller than a pressure in the pressurizing step.

公开(公告)号：US20190295753A1

公开(公告)日：2019-09-26

申请号：US16345270

申请日：2017-10-27

申请人： IHI Corporation

发明人： Nausuki YONEYAMA ,  Haruki EGUCHI ,  Hidekazu BANNO ,  Isao NAKANOWATARI ,  Keisuke NAGAO

IPC分类号： H01F1/057 ,  H01F41/02 ,  C22C38/00 ,  B22F3/10 ,  B22F3/24

摘要： A rare earth permanent magnet includes a main phase containing: a rare earth element R of one or more types including Nd; an element L of one or more types selected from a group consisting of Co, Be, Li, Al, and Si; B; and Fe, wherein crystals which form the main phase belong to P42/mnm; some of B atoms occupying a 4f site of the crystals are substituted with atoms of the element L; each distribution of Nd atoms and the atoms of the element L appears along a C-axis direction of the crystals in a plurality of cycles; and the rare earth permanent magnet includes an area where a cycle of the atoms of the element L matches a cycle of the Nd atoms.

公开(公告)号：US20180047488A1

公开(公告)日：2018-02-15

申请号：US15797841

申请日：2017-10-30

申请人： IHI CORPORATION

发明人： Hidekazu TOMONO ,  Haruki EGUCHI ,  Natsuki YONEYAMA ,  Isao NAKANOWATARI ,  Keisuke NAGAO ,  Hiroo TAKAHASHI

IPC分类号： H01F1/057 ,  B22F9/04 ,  H01F41/02 ,  B22F3/16 ,  B22F3/24 ,  C22C30/02 ,  B22F9/24

CPC分类号： H01F1/0577 ,  B22F1/00 ,  B22F3/00 ,  B22F3/16 ,  B22F3/24 ,  B22F9/04 ,  B22F9/24 ,  B22F2003/248 ,  B22F2009/043 ,  B22F2202/05 ,  B22F2301/355 ,  C22C30/02 ,  C22C38/00 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02 ,  H01F41/0266

摘要： A rare earth permanent magnet comprising a main phase containing: one or more elements R selected from a group consisting of Nd and Pr; one or more elements L selected from a group consisting of Co, Be, Li, Al and Si; one or more elements A selected from a group consisting of Tb, Sm, Gd, Ho and Er; Fe; and B, wherein crystals forming the main phase belong to P42/mnm, and some B atoms occupying a 4f site are substituted by atoms of the elements L.

公开(公告)号：US20160322135A1

公开(公告)日：2016-11-03

申请号：US15146932

申请日：2016-05-05

申请人： IHI CORPORATION

发明人： Haruki EGUCHI ,  Isao NAKANOWATARI ,  Natsuki YONEYAMA ,  Hidekazu TOMONO ,  Hiroo TAKAHASHI

IPC分类号： H01F1/057 ,  C22C38/14 ,  C22C38/12 ,  H01F41/02 ,  C22C38/06 ,  C22C38/00 ,  C21D6/00 ,  C21D9/00 ,  C22C38/16 ,  C22C38/10

CPC分类号： H01F1/057 ,  B22F3/00 ,  B22F2998/10 ,  B22F2999/00 ,  C21D6/007 ,  C21D9/0068 ,  C22C33/0278 ,  C22C38/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C2202/02 ,  H01F1/0577 ,  H01F41/0253 ,  H01F41/0273 ,  B22F3/02 ,  B22F2202/05 ,  B22F9/04 ,  B22F9/20 ,  B22F3/10 ,  B22F2201/20

摘要： A magnetic property of a rare earth permanent magnet containing neodymium, iron, and boron is enhanced. The present disclosure is a rare earth permanent magnet with a compound represented by a following expression as a main phase: Nd2Fe14B(1-x) Mx In the expression, M represents an element selected from any one of cobalt, beryllium, lithium, aluminum, and silicon and x satisfies 0.01≦x≦0.25. The main phase has an Nd—Fe—B layer and an Fe layer periodically and part of boron is substituted with any one or more types of elements selected from a group consisting of cobalt, beryllium, lithium, aluminum, and silicon.

摘要翻译： 含有钕，铁和硼的稀土永磁体的磁特性得到提高。 本公开是具有以下表达式表示的化合物作为主相的稀土永磁体：Nd2Fe14B（1-x）Mx在该表达式中，M表示选自钴，铍，锂，铝， 硅和x满足0.01≤x≤0.25。 主相具有周期性的Nd-Fe-B层和Fe层，部分硼被选自钴，铍，锂，铝和硅中的一种或多种元素取代。