DK0466988T3 - Permanent magnet med forbedret korrosionsbestandighed og fremgangsmåde til fremstilling deraf - Google Patents

Permanent magnet med forbedret korrosionsbestandighed og fremgangsmåde til fremstilling deraf

Info

Publication number: DK0466988T3
Authority: DK; Denmark
Prior art keywords: corrosion resistance; weight percent; nitrogen; permanent magnet; improved corrosion
Prior art date: 1990-04-10

Application number

DK90313781.8T

Other languages

English (en)

Inventor

Edward J Dulis

Andrew S Kim

Floyd E Camp

Original Assignee

Crucible Materials 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.)

1990-04-10

Filing date

1990-12-21

Publication date

1994-07-11

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24016980&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK0466988(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1990-12-21 Application filed by Crucible Materials Corp filed Critical Crucible Materials Corp

1994-07-11 Application granted granted Critical

1994-07-11 Publication of DK0466988T3 publication Critical patent/DK0466988T3/da

Links

238000005260 corrosion Methods 0.000 title abstract 3
230000007797 corrosion Effects 0.000 title abstract 3
238000000034 method Methods 0.000 title 1
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 8
229910052757 nitrogen Inorganic materials 0.000 abstract 4
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 3
229910052799 carbon Inorganic materials 0.000 abstract 3
239000001301 oxygen Substances 0.000 abstract 3
229910052760 oxygen Inorganic materials 0.000 abstract 3
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 abstract 1
229910052786 argon Inorganic materials 0.000 abstract 1
239000012300 argon atmosphere Substances 0.000 abstract 1
239000012298 atmosphere Substances 0.000 abstract 1
229910001172 neodymium magnet Inorganic materials 0.000 abstract 1

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
- 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

Landscapes

Chemical & Material Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Inorganic Chemistry (AREA)
Engineering & Computer Science (AREA)
Power Engineering (AREA)
Hard Magnetic Materials (AREA)
Manufacturing Cores, Coils, And Magnets (AREA)
Preventing Corrosion Or Incrustation Of Metals (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Powder Metallurgy (AREA)

DK90313781.8T 1990-04-10 1990-12-21 Permanent magnet med forbedret korrosionsbestandighed og fremgangsmåde til fremstilling deraf DK0466988T3 (da)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US07/507,026 US5162064A (en)	1990-04-10	1990-04-10	Permanent magnet having improved corrosion resistance and method for producing the same

Publications (1)

Publication Number	Publication Date
DK0466988T3 true DK0466988T3 (da)	1994-07-11

Family

ID=24016980

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK90313781.8T DK0466988T3 (da)	1990-04-10	1990-12-21	Permanent magnet med forbedret korrosionsbestandighed og fremgangsmåde til fremstilling deraf

Country Status (7)

Country	Link
US (2)	US5162064A (da)
EP (1)	EP0466988B1 (da)
JP (1)	JPH04242902A (da)
AT (1)	ATE107077T1 (da)
CA (1)	CA2031281A1 (da)
DE (2)	DE9018099U1 (da)
DK (1)	DK0466988T3 (da)

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* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5186765A (en) *	1989-07-31	1993-02-16	Kabushiki Kaisha Toshiba	Cold accumulating material and method of manufacturing the same
US5162064A (en) *	1990-04-10	1992-11-10	Crucible Materials Corporation	Permanent magnet having improved corrosion resistance and method for producing the same
GB9217760D0 (en) *	1992-08-21	1992-10-07	Martinex R & D Inc	Permanent manget material containing a rare-earth element,iron,nitrogen & carbon
US5454998A (en) *	1994-02-04	1995-10-03	Ybm Technologies, Inc.	Method for producing permanent magnet
US5486240A (en) *	1994-04-25	1996-01-23	Iowa State University Research Foundation, Inc.	Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making
US5480471A (en) *	1994-04-29	1996-01-02	Crucible Materials Corporation	Re-Fe-B magnets and manufacturing method for the same
US5858123A (en) *	1995-07-12	1999-01-12	Hitachi Metals, Ltd.	Rare earth permanent magnet and method for producing the same
DE19541948A1 (de) *	1995-11-10	1997-05-15	Schramberg Magnetfab	Magnetmaterial und Dauermagnet des NdFeB-Typs
US6022424A (en) *	1996-04-09	2000-02-08	Lockheed Martin Idaho Technologies Company	Atomization methods for forming magnet powders
JP3779404B2 (ja) *	1996-12-05	2006-05-31	株式会社東芝	永久磁石材料、ボンド磁石およびモータ
WO1999002337A1 (en) *	1997-07-11	1999-01-21	Aura Systems, Inc.	High temperature passivation of rare earth magnets
US6332933B1 (en)	1997-10-22	2001-12-25	Santoku Corporation	Iron-rare earth-boron-refractory metal magnetic nanocomposites
US6159308A (en) *	1997-12-12	2000-12-12	Hitachi Metals, Ltd.	Rare earth permanent magnet and production method thereof
CN1265401C (zh)	1998-07-13	2006-07-19	株式会社三德	制造纳米复合磁性材料的方法以及制造粘结磁体的方法
EP1014392B9 (en) *	1998-12-15	2004-11-24	Shin-Etsu Chemical Co., Ltd.	Rare earth/iron/boron-based permanent magnet alloy composition
US6261515B1 (en)	1999-03-01	2001-07-17	Guangzhi Ren	Method for producing rare earth magnet having high magnetic properties
US6818041B2 (en) *	2000-09-18	2004-11-16	Neomax Co., Ltd	Magnetic alloy powder for permanent magnet and method for producing the same
WO2004046409A2 (en) *	2002-11-18	2004-06-03	Iowa State University Research Foundation, Inc.	Permanent magnet alloy with improved high temperature performance
US20050062572A1 (en) *	2003-09-22	2005-03-24	General Electric Company	Permanent magnet alloy for medical imaging system and method of making
KR100866018B1 (ko)	2004-03-31	2008-10-31	티디케이가부시기가이샤	희토류 자석 및 이의 제조방법
JPWO2005123974A1 (ja) *	2004-06-22	2008-04-10	信越化学工業株式会社	Ｒ−Ｆｅ−Ｂ系希土類永久磁石材料
US20070089806A1 (en) *	2005-10-21	2007-04-26	Rolf Blank	Powders for rare earth magnets, rare earth magnets and methods for manufacturing the same
CN101615462B (zh) *	2009-05-26	2011-08-17	安徽大地熊新材料股份有限公司	含有微量氮RE-Fe-B系永磁材料的制备方法
US8821650B2 (en) *	2009-08-04	2014-09-02	The Boeing Company	Mechanical improvement of rare earth permanent magnets
JP5494056B2 (ja) *	2010-03-16	2014-05-14	Ｔｄｋ株式会社	希土類焼結磁石、回転機及び往復動モータ
CN104766717B (zh) *	2014-01-07	2018-12-07	中国科学院宁波材料技术与工程研究所	一种提高烧结钕铁硼永磁体磁性能的方法
CN110957094B (zh) *	2019-12-23	2022-07-15	厦门优星电子科技有限公司	一种钕铁硼磁铁的烧结方法

Family Cites Families (16)

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Publication number	Priority date	Publication date	Assignee	Title
DE268977C (da) *
DE3587977T2 (de) *	1984-02-28	1995-05-18	Sumitomo Spec Metals	Dauermagnete.
JPS61208807A (ja) *	1985-03-13	1986-09-17	Hitachi Metals Ltd	永久磁石
US4588439A (en) *	1985-05-20	1986-05-13	Crucible Materials Corporation	Oxygen containing permanent magnet alloy
JPH07107882B2 (ja) *	1985-09-12	1995-11-15	日立金属株式会社	永久磁石
JPS62119903A (ja) *	1985-11-19	1987-06-01	Shin Etsu Chem Co Ltd	希土類永久磁石の製造方法
JPS62133040A (ja) *	1985-12-05	1987-06-16	Shin Etsu Chem Co Ltd	希土類永久磁石の製造方法
JPS62151542A (ja) *	1985-12-25	1987-07-06	S C M:Kk	改良された永久磁石材料
JPS62165305A (ja) *	1986-01-16	1987-07-21	Hitachi Metals Ltd	熱安定性良好な永久磁石およびその製造方法
KR960005323B1 (ko) *	1986-06-27	1996-04-23	나미기 세이미쓰 호오세키 가부시기가이샤	영구자석의 제조방법
JPH0668144B2 (ja) *	1986-08-04	1994-08-31	住友特殊金属株式会社	耐食性のすぐれた希土類磁石材料
DE3786719T2 (de) *	1986-08-04	1993-12-09	Sumitomo Spec Metals	Seltenerdmagnet und Seltenerdlegierung-Magnetpulver mit grossem Korrosionswiderstand.
DE3637521A1 (de) *	1986-11-04	1988-05-11	Schramberg Magnetfab	Permanentmagnet und verfahren zu seiner herstellung
FR2610411B1 (fr) *	1987-02-04	1989-06-09	Sfim	Procede et dispositif de mesure de la vitesse par rapport a l'air d'un helicoptere a basse vitesse
JP2791470B2 (ja) *	1987-06-01	1998-08-27	日立金属株式会社	Ｒ−Ｂ−Ｆｅ系焼結磁石
US5162064A (en) *	1990-04-10	1992-11-10	Crucible Materials Corporation	Permanent magnet having improved corrosion resistance and method for producing the same

1990
- 1990-04-10 US US07/507,026 patent/US5162064A/en not_active Expired - Lifetime
- 1990-11-30 CA CA002031281A patent/CA2031281A1/en not_active Abandoned
- 1990-12-21 DK DK90313781.8T patent/DK0466988T3/da active
- 1990-12-21 DE DE9018099U patent/DE9018099U1/de not_active Expired - Lifetime
- 1990-12-21 DE DE69009753T patent/DE69009753D1/de not_active Expired - Lifetime
- 1990-12-21 EP EP90313781A patent/EP0466988B1/en not_active Expired - Lifetime
- 1990-12-21 AT AT90313781T patent/ATE107077T1/de active
1991
- 1991-04-04 JP JP3097944A patent/JPH04242902A/ja active Pending
1992
- 1992-10-27 US US07/966,855 patent/US5282904A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US5162064A (en)	1992-11-10
DE69009753D1 (de)	1994-07-14
CA2031281A1 (en)	1991-10-11
JPH04242902A (ja)	1992-08-31
EP0466988B1 (en)	1994-06-08
US5282904A (en)	1994-02-01
EP0466988A3 (en)	1992-06-17
ATE107077T1 (de)	1994-06-15
EP0466988A2 (en)	1992-01-22
DE9018099U1 (de)	1995-06-01

Publication	Publication Date	Title
EP0466988A3 (en)	1992-06-17	Permanent magnet having improved corrosion resistance and method for producing the same
ATE227355T1 (de)	2002-11-15	Rostfreier austenitischer stahl mit niedrigem nickelgehalt
ES8306041A1 (es)	1983-05-01	Metodo de colada de un material en banda amorfo.
CA2015429A1 (en)	1990-11-01	High strength alpha-beta titanium-base alloy
DE3660442D1 (en)	1988-09-01	Permanent magnet alloy
ES2087277T3 (es)	1996-07-16	Procedimiento para producir 1-desoxinojirimicina n-sustituida.
GR3035916T3 (en)	2001-08-31	Magnetic strips and methods for making the same.
TW364127B (en)	1999-07-11	Electrical choke for power factor correction
TW351816B (en)	1999-02-01	Distributed gap electrical choke
GB1439563A (en)	1976-06-16	Induction-type reaction rails for high speed trains
ATE43932T1 (de)	1989-06-15	Dauermagnetlegierung.
ZA873096B (en)	1987-12-30	Composition and use
DK392087A (da)	1988-01-30	Antibiotikum a 42867 og syreadditionssalte deraf
AU2002361412A1 (en)	2003-06-30	Stabilising composition i
DK0529653T3 (da)	1996-11-18	Mikrobiologisk fremgangsmåde til fremstilling af 6-hydroxypyrazincarboxylsyre
KR910003697A (ko)	1991-02-28	희토류계 영구자석의 내식성 향상 방법
Kekalo et al.	1985	Time Instability of the Initial Permeability of the Amorphous Alloy Fe sub 5 Co sub 70 Si sub 15 B sub 10 After Various Forms of Magnetic Annealing
KR870002291A (ko)	1987-03-30	저철손 고자속 무방향성 전기강판 제조방법
JPS5662938A (en)	1981-05-29	Dental alloy
KR870006209A (ko)	1987-07-10	자성이 우수한 방향성 규소강판의 제조법
KR900019071A (ko)	1990-12-24	내산화성이 증가된 영구자석 합금분말의 제조방법
ATE36873T1 (de)	1988-09-15	Legiertes graugusseisen, verfahren zu dessen herstellung und dessen verwendung.
Nakagawa et al.	1991	Stepping Motor Yoke
Brandis et al.	1985	Permanent Magnets and Alloy Therefor
Tsurkov	1990	Increase of Fatigue Limit of Cast Carbon Steel