公开(公告)号：EP3866180A1

公开(公告)日：2021-08-18

申请号：EP19870224.3

申请日：2019-09-19

申请人： IHI Corporation

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

IPC分类号： H01F41/02 ,  B22F1/00 ,  B22F3/00 ,  B22F3/02 ,  C22C38/00 ,  H01F1/059

摘要： A method of manufacturing an Sm-Fe-N magnet includes a sealing step (S10) 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 (S12) 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 (S14) 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 (S16) 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 (S14), 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 (S16).

公开(公告)号：EP3291251A1

公开(公告)日：2018-03-07

申请号：EP16786608.6

申请日：2016-04-28

申请人： IHI Corporation

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

IPC分类号： H01F1/08 ,  B22F1/00 ,  B22F3/00 ,  C22C38/00 ,  H01F1/057 ,  H01F41/02

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 P4 2 /mnm, and some B atoms occupying a 4f site are substituted by atoms of the elements L.

摘要翻译： 一种稀土类永久磁铁，其特征在于，其主相含有选自Nd和Pr中的一种以上的元素R， 一种或多种选自Co，Be，Li，Al和Si的元素L; 一种或多种选自Tb，Sm，Gd，Ho和Er的元素A; 铁; 和B，其中形成主相的晶体属于P42 / mnm，并且占据4f位的一些B原子被元素L的原子取代。

公开(公告)号：EP3067900A1

公开(公告)日：2016-09-14

申请号：EP14860236.0

申请日：2014-11-04

申请人： IHI Corporation

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

IPC分类号： H01F1/057 ,  B22F3/00 ,  C22C33/02 ,  C22C38/00 ,  H01F1/08

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.
[Solution]
The present invention is a rare earth permanent magnet with a compound represented by a following expression (1) as a main phase:
[Chem. 1]

        Nd 2 Fe 14 B (1-x) M x      (1)

In the expression (1), 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. Furthermore, the main phase contains terbium and praseodymium in addition to the above-mentioned constituents. The rare earth permanent magnet further includes a grain boundary phase containing any one or more types of elements selected from a group consisting of aluminum, copper, niobium, zirconium, titanium, and gallium.

摘要翻译： 稀土类永久磁铁含有钕，铁和硼的磁特性提高。 [解决方法]本发明是具有由以下表达式（1）作为主相表示的化合物的稀土类永久磁铁：[化学式 1]€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒNd2 Fe 14 B系（1-X）的M×€ƒ€ƒ€ƒ€ƒ€ƒ（1）在表达式（1），M 从钴，铍，锂，铝，和硅中的任一个选定的元件的darstellt X SATIS外资企业00:01‰¤x‰¤0.25。 主相具有的Nd-Fe-B层和Fe层定期和硼的一部分取代有任何一个或多个类型从一组由钴。铍，锂，铝和硅中选择的元素。 进一步，主相含有除了上述成分铽和镨。 该稀土永磁铁还包括晶界相包含任何一个或多个类型从一组选自由铝，铜，铌，锆，钛，镓和所选元素。