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
DK0466988T3 DK90313781.8T DK90313781T DK0466988T3 DK 0466988 T3 DK0466988 T3 DK 0466988T3 DK 90313781 T DK90313781 T DK 90313781T DK 0466988 T3 DK0466988 T3 DK 0466988T3
Authority
DK
Denmark
Prior art keywords
corrosion resistance
weight percent
nitrogen
permanent magnet
improved corrosion
Prior art date
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.)
Filing date
Publication date
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.
Application filed by Crucible Materials Corp filed Critical Crucible Materials Corp
Application granted granted Critical
Publication of DK0466988T3 publication Critical patent/DK0466988T3/da

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
    • 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)
  • Powder Metallurgy (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (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) DE69009753D1 (da)
DK (1) DK0466988T3 (da)

Families Citing this family (27)

* 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
AU2003291539A1 (en) * 2002-11-18 2004-06-15 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
CN1938795B (zh) 2004-03-31 2012-05-02 Tdk株式会社 稀土类磁铁及其制造方法
US7485193B2 (en) * 2004-06-22 2009-02-03 Shin-Etsu Chemical Co., Ltd R-FE-B based rare earth permanent magnet material
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)

* Cited by examiner, † Cited by third party
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
WO1988000387A1 (en) * 1986-06-27 1988-01-14 Namiki Precision Jewel Co., Ltd. Process for producing permanent magnets
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

Also Published As

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

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