DE69017309T3 - Permanentmagnetlegierung mit verbesserter Widerstandsfähigkeit gegen Oxidation sowie Verfahren zur Herstellung. - Google Patents

Permanentmagnetlegierung mit verbesserter Widerstandsfähigkeit gegen Oxidation sowie Verfahren zur Herstellung.

Info

Publication number
DE69017309T3
DE69017309T3 DE69017309T DE69017309T DE69017309T3 DE 69017309 T3 DE69017309 T3 DE 69017309T3 DE 69017309 T DE69017309 T DE 69017309T DE 69017309 T DE69017309 T DE 69017309T DE 69017309 T3 DE69017309 T3 DE 69017309T3
Authority
DE
Germany
Prior art keywords
oxidation
manufacture
permanent magnet
improved resistance
magnet alloy
Prior art date
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.)
Expired - Fee Related
Application number
DE69017309T
Other languages
English (en)
Other versions
DE69017309T2 (de
DE69017309D1 (de
Inventor
Toshio C O Dowa Mining Co Ueda
Yuichi C O Dowa Mining Co Sato
Masayasu C O Dowa Mining Senda
Seiji C O Dowa Mining Isoyama
Seiichi C O Dowa Mining Hisano
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.)
Dowa Holdings Co Ltd
Original Assignee
Dowa Mining Co Ltd
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=27476830&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69017309(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1217500A external-priority patent/JP2739502B2/ja
Priority claimed from JP1217501A external-priority patent/JP2779654B2/ja
Priority claimed from JP1301907A external-priority patent/JP2789364B2/ja
Priority claimed from JP01301908A external-priority patent/JP3142851B2/ja
Application filed by Dowa Mining Co Ltd filed Critical Dowa Mining Co Ltd
Application granted granted Critical
Publication of DE69017309D1 publication Critical patent/DE69017309D1/de
Publication of DE69017309T2 publication Critical patent/DE69017309T2/de
Publication of DE69017309T3 publication Critical patent/DE69017309T3/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0433—Nickel- or cobalt-based alloys
    • C22C1/0441—Alloys based on intermetallic compounds of the type rare earth - Co, Ni
    • 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
    • H01F1/0572—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 with a protective layer
    • 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
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
DE69017309T 1989-08-25 1990-08-22 Permanentmagnetlegierung mit verbesserter Widerstandsfähigkeit gegen Oxidation sowie Verfahren zur Herstellung. Expired - Fee Related DE69017309T3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1217500A JP2739502B2 (ja) 1989-08-25 1989-08-25 耐酸化性の優れた永久磁石合金
JP1217501A JP2779654B2 (ja) 1989-08-25 1989-08-25 耐酸化性の優れた焼結永久磁石合金
JP1301907A JP2789364B2 (ja) 1989-11-22 1989-11-22 耐酸化性の優れた永久磁石合金の製造方法
JP01301908A JP3142851B2 (ja) 1989-11-22 1989-11-22 耐酸化性の優れた永久磁石合金の製造法

Publications (3)

Publication Number Publication Date
DE69017309D1 DE69017309D1 (de) 1995-04-06
DE69017309T2 DE69017309T2 (de) 1995-11-16
DE69017309T3 true DE69017309T3 (de) 2003-08-14

Family

ID=27476830

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69017309T Expired - Fee Related DE69017309T3 (de) 1989-08-25 1990-08-22 Permanentmagnetlegierung mit verbesserter Widerstandsfähigkeit gegen Oxidation sowie Verfahren zur Herstellung.
DE69029405T Expired - Fee Related DE69029405T3 (de) 1989-08-25 1990-08-22 Dauermagnetlegierung mit besserem Oxidationswiderstand und Herstellungsverfahren

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69029405T Expired - Fee Related DE69029405T3 (de) 1989-08-25 1990-08-22 Dauermagnetlegierung mit besserem Oxidationswiderstand und Herstellungsverfahren

Country Status (3)

Country Link
US (1) US5147473A (de)
EP (2) EP0571002B2 (de)
DE (2) DE69017309T3 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269855A (en) * 1989-08-25 1993-12-14 Dowa Mining Co., Ltd. Permanent magnet alloy having improved resistance
US5250206A (en) * 1990-09-26 1993-10-05 Mitsubishi Materials Corporation Rare earth element-Fe-B or rare earth element-Fe-Co-B permanent magnet powder excellent in magnetic anisotropy and corrosion resistivity and bonded magnet manufactured therefrom
JPH05503322A (ja) * 1990-10-09 1993-06-03 アイオワ・ステイト・ユニバーシティ・リサーチ・ファウンデーション・インコーポレイテッド 環境に対して安定な反応性を有する合金粉末及びその製造方法
CN1066280C (zh) * 1993-04-16 2001-05-23 同和矿业株式会社 耐氧化性能优良的永久磁铁合金
US5454998A (en) * 1994-02-04 1995-10-03 Ybm Technologies, Inc. Method for producing permanent magnet
WO1999002337A1 (en) * 1997-07-11 1999-01-21 Aura Systems, Inc. High temperature passivation of rare earth magnets
CN101036202B (zh) 2004-11-17 2010-09-01 Tdk株式会社 稀土类烧结磁铁
GB2505226A (en) * 2012-08-23 2014-02-26 Melexis Technologies Nv Arrangement, method and sensor for measuring an absolute angular position using a multi-pole magnet
CN103643134B (zh) * 2013-11-05 2015-10-28 北京工业大学 硼化物颗粒强化Fe-B-C合金及其制备方法

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU384922A1 (ru) * 1971-07-01 1973-05-29 Сплав на основе системы самарий-кобальт
JPS5927758A (ja) * 1982-08-03 1984-02-14 Tohoku Metal Ind Ltd 強磁性薄板材料およびその製造方法
US4792368A (en) * 1982-08-21 1988-12-20 Sumitomo Special Metals Co., Ltd. Magnetic materials and permanent magnets
JPS5946008A (ja) * 1982-08-21 1984-03-15 Sumitomo Special Metals Co Ltd 永久磁石
CA1316375C (en) * 1982-08-21 1993-04-20 Masato Sagawa Magnetic materials and permanent magnets
JPS59132105A (ja) † 1983-01-19 1984-07-30 Sumitomo Special Metals Co Ltd 永久磁石用合金
US4597938A (en) * 1983-05-21 1986-07-01 Sumitomo Special Metals Co., Ltd. Process for producing permanent magnet materials
US4601875A (en) † 1983-05-25 1986-07-22 Sumitomo Special Metals Co., Ltd. Process for producing magnetic materials
JPS60144908A (ja) † 1984-01-06 1985-07-31 Daido Steel Co Ltd 永久磁石材料
JPS61119642A (ja) * 1984-11-16 1986-06-06 Tdk Corp 永久磁石合金焼結体
JPS61143553A (ja) * 1984-12-14 1986-07-01 Sumitomo Special Metals Co Ltd 永久磁石材料の製造方法
CN1007847B (zh) * 1984-12-24 1990-05-02 住友特殊金属株式会社 制造具有改进耐蚀性磁铁的方法
US4765848A (en) † 1984-12-31 1988-08-23 Kaneo Mohri Permanent magnent and method for producing same
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
JPS62181403A (ja) † 1986-02-05 1987-08-08 Hitachi Metals Ltd 永久磁石
JPS63114939A (ja) * 1986-04-11 1988-05-19 Tokin Corp Ｒ↓２ｔ↓１↓４ｂ系複合型磁石材料とその製造方法
JPH0828295B2 (ja) * 1986-04-30 1996-03-21 株式会社トーキン 耐酸化性に優れた永久磁石とその製造方法
JPS62291904A (ja) * 1986-06-12 1987-12-18 Namiki Precision Jewel Co Ltd 永久磁石の製造方法
JPH0770382B2 (ja) * 1986-09-19 1995-07-31 住友特殊金属株式会社 耐食性のすぐれた希土類磁石及びその製造方法
DE3637521A1 (de) † 1986-11-04 1988-05-11 Schramberg Magnetfab Permanentmagnet und verfahren zu seiner herstellung
JPS63213315A (ja) † 1987-03-02 1988-09-06 Tdk Corp 高性能希土類磁石とその製造方法
US5022939A (en) * 1987-07-30 1991-06-11 Tdk Corporation Permanent magnets
JPH01103805A (ja) * 1987-07-30 1989-04-20 Tdk Corp 永久磁石
US4849035A (en) † 1987-08-11 1989-07-18 Crucible Materials Corporation Rare earth, iron carbon permanent magnet alloys and method for producing the same
JPH01168844A (ja) † 1987-12-24 1989-07-04 Namiki Precision Jewel Co Ltd 永久磁石材料
JP2812964B2 (ja) * 1988-10-31 1998-10-22 出光興産株式会社 水−グリコール型作動液
JP3047239B2 (ja) † 1989-04-14 2000-05-29 日立金属株式会社 温間加工磁石及びその製造方法
DE3928389A1 (de) * 1989-08-28 1991-03-14 Schramberg Magnetfab Permanentmagnet

Also Published As

Publication number Publication date
EP0571002A3 (de) 1994-01-19
EP0571002A2 (de) 1993-11-24
EP0414645B2 (de) 2003-01-02
US5147473A (en) 1992-09-15
DE69029405D1 (de) 1997-01-23
EP0414645B1 (de) 1995-03-01
EP0571002B2 (de) 2003-01-02
EP0571002B1 (de) 1996-12-11
EP0414645A1 (de) 1991-02-27
DE69029405T3 (de) 2003-08-21
DE69029405T2 (de) 1997-07-10
DE69017309T2 (de) 1995-11-16
DE69017309D1 (de) 1995-04-06

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Legal Events

Date Code Title Description
8332 No legal effect for de
8370 Indication related to discontinuation of the patent is to be deleted
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings
8339 Ceased/non-payment of the annual fee