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1. CN110168674 - MAGNETIC POWDER CONTAINING SM-FE-N CRYSTAL GRAINS, SINTERED MAGNET PRODUCED FROM SAME, METHOD FOR PRODUCING SAID MAGNETIC POWDER, AND METHOD FOR PRODUCING SAID SINTERED MAGNET

官庁 中華人民共和国
出願番号 201880006182.X
出願日 01.03.2018
公開番号 110168674
公開日 23.08.2019
公報種別 A
IPC
H01F 1/059
H電気
01基本的電気素子
F磁石;インダクタンス;変成器;それらの磁気特性による材料の選択
1磁性材料を特徴とする磁石または磁性体;その磁気特性のための材料の選択
01無機材料
03保磁力によって特徴づけられるもの
032硬質磁性材料
04金属または合金
047組成に特徴のある合金
053希土類元素を含むもの
055磁性遷移金属を共に含むもの,例.SmCo↓5
059Va族元素を共に含むもの,例.Sm↓2Fe↓1↓7N↓2
B22F 1/00
B処理操作;運輸
22鋳造;粉末冶金
F金属質粉の加工;金属質粉からの物品の製造;金属質粉の製造;金属質粉に特に適する装置または機械
1金属質粉の特殊処理,例.加工を促進するためのもの,特性を改善するためのもの;金属粉それ自体,例.異なる組成の小片の混合
B22F 3/00
B処理操作;運輸
22鋳造;粉末冶金
F金属質粉の加工;金属質粉からの物品の製造;金属質粉の製造;金属質粉に特に適する装置または機械
3成形または焼結方法に特徴がある金属質粉からの工作物または物品の製造;特にそのために適した装置
B22F 3/14
B処理操作;運輸
22鋳造;粉末冶金
F金属質粉の加工;金属質粉からの物品の製造;金属質粉の製造;金属質粉に特に適する装置または機械
3成形または焼結方法に特徴がある金属質粉からの工作物または物品の製造;特にそのために適した装置
12成形と焼結の両者を特徴とするもの
14両者を同時に行なうもの
B22F 9/04
B処理操作;運輸
22鋳造;粉末冶金
F金属質粉の加工;金属質粉からの物品の製造;金属質粉の製造;金属質粉に特に適する装置または機械
9金属質粉またはその懸濁液の製造;それに特に適する装置または機械
02物理的プロセスを用いるもの
04固体物質からはじまるもの,例.破砕,研磨または粉砕によるもの
C22C 33/02
C化学;冶金
22冶金;鉄または非鉄合金;合金の処理または非鉄金属の処理
C合金
33鉄合金の製造
02粉末冶金によるもの
CPC
B22F 1/0011
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
0003Metallic powders per se; Mixtures of metallic powders; Metallic powders mixed with a lubricating or binding agent
0007Metallic powder characterised by its shape or structure, e.g. fibre structure
0011Metallic powder characterised by size or surface area only
B22F 1/025
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
1Special treatment of metallic powder, e.g. to facilitate working, to improve properties
02comprising coating of the powder
025Metallic coating
B22F 3/105
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
B22F 3/14
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
12Both compacting and sintering
14simultaneously
B22F 7/06
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
7Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting ; wherein at least one part is obtained by sintering or compression
06of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 2003/1051
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
3Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; ; Presses and furnaces
10Sintering only
105by using electric current ; other than for infra-red radiant energy; , laser radiation or plasma
1051by electric discharge
出願人 NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
国立研究开发法人产业技术综合研究所
MURATA MANUFACTURING CO., LTD.
株式会社村田制作所
発明者 TAKAGI KENTA
高木健太
YAMAGUCHI WATARU
山口渡
YOKOYAMA TAKAAKI
横山贵章
SAKAGUCHI KENJI
坂口健二
YOSHII KAZUHIRO
吉井和弘
YOKOYAMA YUJI
横山裕史
代理人 北京集佳知识产权代理有限公司 11227
北京集佳知识产权代理有限公司 11227
優先権情報 2017-046463 10.03.2017 JP
発明の名称
(EN) MAGNETIC POWDER CONTAINING SM-FE-N CRYSTAL GRAINS, SINTERED MAGNET PRODUCED FROM SAME, METHOD FOR PRODUCING SAID MAGNETIC POWDER, AND METHOD FOR PRODUCING SAID SINTERED MAGNET
(ZH) 含有Sm-Fe-N系晶粒的磁体粉末和由该磁体粉末制造的烧结磁体以及它们的制造方法
要約
(EN)
The purpose of the present invention is to provide: a sintered magnet which contains Sm-Fe-N crystal grains and has high coercivity; and a magnetic powder which is capable of forming a sintered magnetwithout lowering the coercivity even if heat is generated in association with the sintering. A sintered magnet which comprises a crystal phase that is composed of a plurality of Sm-Fe-N crystal grains and non-magnetic metal phases that are present between adjacent Sm-Fe-N crystal grains, and wherein the ratio of the Fe peak intensity IFe to the SmFeN peak intensity ISmFeN as determined by an X-ray diffraction method is 0.2 or less. A magnetic powder which contains Sm-Fe-N crystal grains and non-magnetic metal layers that cover the surfaces of the Sm-Fe-N crystal grains.

(ZH)
本发明的目的在于提供一种含有Sm‑Fe‑N系晶粒且具有高矫顽力的烧结磁体以及即便在随着烧结所产生的热的作用下也能够不使矫顽力降低地形成烧结磁体的磁体粉末。上述烧结磁体包含由多个Sm‑Fe‑N系晶粒构成的结晶相、和存在于邻接的Sm‑Fe‑N系晶粒之间的非磁性金属相,并且,由X射线衍射法测定的、Fe峰的强度IFe与SmFeN峰的强度ISmFeN之比为0.2以下。上述磁体粉末包含Sm‑Fe‑N系晶粒和被覆该Sm‑Fe‑N系晶粒的表面的非磁性金属层。