EP0372948A3 - Composition pour aimant permanent - Google Patents

Composition pour aimant permanent Download PDF

Info

Publication number: EP0372948A3
Authority: EP; European Patent Office
Prior art keywords: permanent magnet; magnet composition; bismath; zince; oomposition
Prior art date: 1988-12-08
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19890312748

Other languages

German (de)

English (en)

Other versions

EP0372948B1 (fr

EP0372948A2 (fr

Inventor

Takaaki Yasumura

Teruo Kiyomiya

Yasutoshi Mizuno

Kazuo Matsui

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

FDK Corp

Original Assignee

FDK Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-12-08

Filing date

1989-12-07

Publication date

1991-05-29

1989-12-07 Application filed by FDK Corp filed Critical FDK Corp

1990-06-13 Publication of EP0372948A2 publication Critical patent/EP0372948A2/fr

1991-05-29 Publication of EP0372948A3 publication Critical patent/EP0372948A3/fr

1994-06-29 Application granted granted Critical

1994-06-29 Publication of EP0372948B1 publication Critical patent/EP0372948B1/fr

2009-12-07 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Chemical & Material Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Inorganic Chemistry (AREA)
Hard Magnetic Materials (AREA)

EP19890312748 1988-12-08 1989-12-07 Composition pour aimant permanent Expired - Lifetime EP0372948B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP63308720A JPH02156051A (ja)	1988-12-08	1988-12-08	永久磁石材料
JP308720/88		1988-12-08

Publications (3)

Publication Number	Publication Date
EP0372948A2 EP0372948A2 (fr)	1990-06-13
EP0372948A3 true EP0372948A3 (fr)	1991-05-29
EP0372948B1 EP0372948B1 (fr)	1994-06-29

Family

ID=17984471

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19890312748 Expired - Lifetime EP0372948B1 (fr)	1988-12-08	1989-12-07	Composition pour aimant permanent

Country Status (3)

Country	Link
EP (1)	EP0372948B1 (fr)
JP (1)	JPH02156051A (fr)
DE (1)	DE68916522T2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN1035700C (zh) *	1992-07-07	1997-08-20	上海跃龙有色金属有限公司	稀土磁性合金粉末制造方法及其产品
JP5558447B2 (ja) *	2011-09-29	2014-07-23	株式会社東芝	永久磁石とそれを用いたモータおよび発電機
DE102012110629A1 (de)	2012-11-06	2014-05-08	Rainer Geschwandtner	Eindeckbare Sicherungsvorrichtung für Steildächer
JP6125687B2 (ja) *	2016-03-18	2017-05-10	株式会社東芝	モータ、発電機、および自動車
JP6462754B2 (ja) *	2017-04-04	2019-01-30	株式会社東芝	永久磁石、モータ、発電機、および車

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4497672A (en) *	1982-04-06	1985-02-05	Shin-Etsu Chemical Co., Ltd.	Method for the preparation of a rare earth-cobalt based permanent magnet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5812331B2 (ja) *	1974-10-25	1983-03-08	セイコーエプソン株式会社	金属間化合物磁石
JPS55128502A (en) *	1979-03-23	1980-10-04	Tdk Corp	Permanent magnet material and its manufacture
JPS56116862A (en) *	1980-02-15	1981-09-12	Seiko Instr & Electronics Ltd	Manufacture of rare earth element magnet

1988
- 1988-12-08 JP JP63308720A patent/JPH02156051A/ja active Granted
1989
- 1989-12-07 EP EP19890312748 patent/EP0372948B1/fr not_active Expired - Lifetime
- 1989-12-07 DE DE1989616522 patent/DE68916522T2/de not_active Expired - Fee Related

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4497672A (en) *	1982-04-06	1985-02-05	Shin-Etsu Chemical Co., Ltd.	Method for the preparation of a rare earth-cobalt based permanent magnet

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 93, no. 11, December 1980 Columbus, Ohio, USA S.Seikosha Co.: "Permanent magnet material" page 681; column 1; ref. no. 214498N *
PATENT ABSTRACTS OF JAPAN vol. 5, no. 103 (E-64)(775) 3 July 1981, & JP-A-56 46508 (SUWA SEIKOSHA K.K.) 27 April 1981, *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 25 (E-225)(1462) 2 February 1984, & JP-A-58 186906 (TOKYO SHIBAURA DENKI K.K.) 1 November 1983, *

Also Published As

Publication number	Publication date
JPH02156051A (ja)	1990-06-15
DE68916522D1 (de)	1994-08-04
EP0372948B1 (fr)	1994-06-29
DE68916522T2 (de)	1994-10-13
JPH0524219B2 (fr)	1993-04-07
EP0372948A2 (fr)	1990-06-13

Legal Events

Date	Code	Title	Description
1990-04-28	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1990-06-13	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB
1991-02-27	17P	Request for examination filed	Effective date: 19901220
1991-04-10	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1991-05-29	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB
1993-05-05	17Q	First examination report despatched	Effective date: 19930322
1994-05-12	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-06-29	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB
1994-08-04	REF	Corresponds to:	Ref document number: 68916522 Country of ref document: DE Date of ref document: 19940804
1994-08-19	ET	Fr: translation filed
1995-04-29	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-04-29	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-06-21	26N	No opposition filed
2000-11-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20001129 Year of fee payment: 12
2000-12-06	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20001206 Year of fee payment: 12
2000-12-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20001212 Year of fee payment: 12
2001-12-07	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20011207
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-07-02	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020702
2002-07-31	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20011207
2002-08-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020830
2002-09-27	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
DE3686043D1 (de)	1992-08-20	Dauermagnetherstellung aus einer seltenerd-uebergangsmetall-bor-legierung sehr niedriger koerzivitaet.
DE3773113D1 (de)	1991-10-24	Lumineszente mischkristalle aus seltenerdboraten.
EP0160868A3 (fr)	1987-01-14	Moteur sans balai
EP0140981A4 (fr)	1985-07-30	Rotor a champ magnetique permanent.
DE3480673D1 (de)	1990-01-11	Gebundene seltene erden-eisen-magnete.
EP0215129A4 (fr)	1987-07-09	Assemblage de rotor de champ a aimant permanent.
EP0269067A3 (fr)	1989-11-02	Alternateur à aimant permanent réglable
GB9321785D0 (en)	1993-12-15	Permanent magnet rotor
EP0248981A3 (en)	1989-04-12	Permanent magnet and permanent magnetic alloy
DE3786719D1 (de)	1993-09-02	Seltenerdmagnet und seltenerdlegierung-magnetpulver mit grossem korrosionswiderstand.
AU3861685A (en)	1985-08-15	Permanent magnet prime mover
EP0372948A3 (fr)	1991-05-29	Composition pour aimant permanent
EP0362805A3 (fr)	1991-07-24	Aimant permanent et procédé de fabrication
GB9302496D0 (en)	1993-03-24	Permanent magnet rotor
EP0571002A3 (fr)	1994-01-19	Alliage pour aimant permanent à résistance contré l'oxydation améliorée et procédé de fabrication
AU7993887A (en)	1988-04-21	Rare earth transition metal alloy magnets
DE3570457D1 (en)	1989-06-29	Sm2co17 alloys suitable for use as permanent magnets
JPS5567110A (en)	1980-05-21	Intermetallic compound magnet
JPS5285311A (en)	1977-07-15	Rotor for pulse motor
AU572120B2 (en)	1988-05-05	High energy product rare earth transition metal magnet alloys
EP0384414A3 (fr)	1991-04-17	Substrat de disque magnétique
JPS5569233A (en)	1980-05-24	Intermetallic compound magnet
ATE26360T1 (de)	1987-04-15	Samarium-kobalt-magnetlegierung.
JPS5521521A (en)	1980-02-15	Permanent magnet material
CA2034632A1 (fr)	1991-08-21	Aimants produits a chaud a partir d'elements de terres rares, de fer et de carbone