DE68905987T2 - Korrosionsfester dauermagnet und herstellungsverfahren. - Google Patents

Korrosionsfester dauermagnet und herstellungsverfahren.

Info

Publication number
DE68905987T2
DE68905987T2 DE8989117425T DE68905987T DE68905987T2 DE 68905987 T2 DE68905987 T2 DE 68905987T2 DE 8989117425 T DE8989117425 T DE 8989117425T DE 68905987 T DE68905987 T DE 68905987T DE 68905987 T2 DE68905987 T2 DE 68905987T2
Authority
DE
Germany
Prior art keywords
atom
permanent magnet
atomic
corrosion
layer
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 - Lifetime
Application number
DE8989117425T
Other languages
German (de)
English (en)
Other versions
DE68905987D1 (de
Inventor
Takaki Sumitomo Special Hamada
Atsushi Sumitomo Spec Hamamura
Nanao Horiishi
Tomoyuki Imai
Yukimitsu Sumitomo Speci Miyao
Kouki Sumitomo Specia Tokuhara
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.)
Toda Kogyo Corp
Proterial Ltd
Original Assignee
Toda Kogyo Corp
Sumitomo Special Metals 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
Application filed by Toda Kogyo Corp, Sumitomo Special Metals Co Ltd filed Critical Toda Kogyo Corp
Publication of DE68905987D1 publication Critical patent/DE68905987D1/de
Application granted granted Critical
Publication of DE68905987T2 publication Critical patent/DE68905987T2/de
Anticipated expiration legal-status Critical
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
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
    • Y10T428/12063—Nonparticulate metal component
    • Y10T428/1209—Plural particulate metal components

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
DE8989117425T 1988-09-20 1989-09-20 Korrosionsfester dauermagnet und herstellungsverfahren. Expired - Lifetime DE68905987T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63237125A JPH0283905A (ja) 1988-09-20 1988-09-20 耐食性永久磁石およびその製造方法

Publications (2)

Publication Number Publication Date
DE68905987D1 DE68905987D1 (de) 1993-05-19
DE68905987T2 true DE68905987T2 (de) 1993-07-22

Family

ID=17010782

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989117425T Expired - Lifetime DE68905987T2 (de) 1988-09-20 1989-09-20 Korrosionsfester dauermagnet und herstellungsverfahren.

Country Status (4)

Country Link
US (1) US4959273A (enExample)
EP (1) EP0361308B1 (enExample)
JP (1) JPH0283905A (enExample)
DE (1) DE68905987T2 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0258729A (ja) * 1988-08-24 1990-02-27 Nec Corp 磁気ディスク基板およびその製造方法
US5314756A (en) * 1991-11-27 1994-05-24 Hitachi Metals, Ltd. Permanent magnet of rare-earth-element/transition-metal system having improved corrosion resistance and manufacturing method thereof
JP3135174B2 (ja) * 1991-11-27 2001-02-13 日立金属株式会社 耐食性を改善したｒ−ｔｍ−ｂ系永久磁石及びその製造方法
JPH05166618A (ja) * 1991-12-17 1993-07-02 Hitachi Metals Ltd 永久磁石
US5926925A (en) * 1994-01-06 1999-07-27 Hicks; Joel R. Magnetic sock holder
US5840432A (en) * 1995-02-13 1998-11-24 Hitachi Chemical Company, Ltd. Electroconductive paste
DE19512888A1 (de) * 1995-04-06 1996-10-10 Vacuumschmelze Gmbh Verfahren zur elektrolytischen Beschichtung von Seltene Erden enthaltenden Dauermagneten mit minimaler Oberflächenschädigung
DE19514018C1 (de) * 1995-04-13 1996-11-28 Hoechst Ceram Tec Ag Verfahren zur Herstellung eines metallbeschichteten, metallisierten Substrats aus Aluminiumnitridkeramik und damit erhaltenes metallbeschichtetes Substrat
DE19751710A1 (de) * 1997-11-21 1999-05-27 Leybold Systems Gmbh Magnetkörper mit Korrosionsschutzbeschichtung
JP4552161B2 (ja) * 1999-11-09 2010-09-29 日立金属株式会社 耐食性のすぐれた超小型磁石
GB0300753D0 (en) * 2003-01-14 2003-02-12 Rolls Royce Plc Rare earth-transmission metal alloy articles
TWI229150B (en) * 2003-03-05 2005-03-11 Tdk Corp Rare earth metal magnet and plating bath
BR112015004464A2 (pt) 2012-08-31 2017-07-04 Shinetsu Chemical Co método de produção de ímãs permanentes de terra rara
WO2014034851A1 (ja) 2012-08-31 2014-03-06 信越化学工業株式会社 希土類永久磁石の製造方法
EP2892063B1 (en) * 2012-08-31 2018-08-15 Shin-Etsu Chemical Co., Ltd. Production method for rare earth permanent magnet
DE102013224108A1 (de) * 2013-11-26 2015-06-11 Siemens Aktiengesellschaft Dauermagnet mit erhöhter Koerzitivfeldstärke
JP6191497B2 (ja) 2014-02-19 2017-09-06 信越化学工業株式会社 電着装置及び希土類永久磁石の製造方法
JP6090589B2 (ja) 2014-02-19 2017-03-08 信越化学工業株式会社 希土類永久磁石の製造方法
US9905345B2 (en) * 2015-09-21 2018-02-27 Apple Inc. Magnet electroplating
US10553352B2 (en) * 2016-03-18 2020-02-04 Apple Inc. Corrosion resistant magnet assembly

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1389867A (fr) * 1963-03-25 1965-02-19 Philips Nv Procédé de fabrication d'un corps magnétique en manganèse-bismuth
US3998669A (en) * 1974-09-20 1976-12-21 Th. Goldschmidt Ag Permanent magnet on the basis of cobalt-rare earth alloys and method for its production
CH612287A5 (enExample) * 1975-05-22 1979-07-13 Bbc Brown Boveri & Cie
GB1596314A (en) * 1978-02-02 1981-08-26 Fujimoto Co Ltd Magneto-therapeutic device
JPS5964733A (ja) * 1982-09-27 1984-04-12 Sumitomo Special Metals Co Ltd 永久磁石
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
JPS59132104A (ja) * 1983-01-19 1984-07-30 Sumitomo Special Metals Co Ltd 永久磁石
JPS5989401A (ja) * 1982-11-15 1984-05-23 Sumitomo Special Metals Co Ltd 永久磁石
CA1315571C (en) * 1982-08-21 1993-04-06 Masato Sagawa Magnetic materials and permanent magnets
JPS6034005A (ja) * 1983-08-04 1985-02-21 Sumitomo Special Metals Co Ltd 永久磁石
JPS6054406A (ja) * 1983-09-03 1985-03-28 Sumitomo Special Metals Co Ltd 耐酸化性のすぐれた永久磁石
JPS60153109A (ja) * 1984-01-21 1985-08-12 Sumitomo Special Metals Co Ltd 永久磁石体
US4668283A (en) * 1984-06-25 1987-05-26 Mitsui Toatsu Chemicals, Incorporated Magnetic powder and production process thereof
JPH0682574B2 (ja) * 1985-01-18 1994-10-19 住友特殊金属株式会社 耐食性のすぐれた永久磁石の製造方法
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
JPS61166117A (ja) * 1985-01-18 1986-07-26 Sumitomo Special Metals Co Ltd 耐食性のすぐれた永久磁石の製造方法
JPS61150201A (ja) * 1984-12-24 1986-07-08 Sumitomo Special Metals Co Ltd 耐食性のすぐれた永久磁石
JPS61166115A (ja) * 1985-01-18 1986-07-26 Sumitomo Special Metals Co Ltd 耐食性のすぐれた永久磁石の製造方法
AT386554B (de) * 1986-08-04 1988-09-12 Treibacher Chemische Werke Ag Verfahren zur herstellung korrosionsbestaendiger, hartmagnetischer pulver fuer die magneterzeugung, magnete aus hartmagnetischem pulver und verfahren zu deren herstellung
JPH0831364B2 (ja) * 1987-04-23 1996-03-27 住友特殊金属株式会社 耐食性永久磁石の製造方法
JPS63255376A (ja) * 1987-04-13 1988-10-21 Sumitomo Special Metals Co Ltd 耐食性永久磁石の製造方法
JP2724391B2 (ja) * 1987-03-26 1998-03-09 住友特殊金属株式会社 耐食性永久磁石
JPH0831363B2 (ja) * 1987-04-13 1996-03-27 住友特殊金属株式会社 耐食性永久磁石の製造方法

Also Published As

Publication number Publication date
DE68905987D1 (de) 1993-05-19
US4959273A (en) 1990-09-25
JPH0432523B2 (enExample) 1992-05-29
EP0361308B1 (en) 1993-04-14
EP0361308A1 (en) 1990-04-04
JPH0283905A (ja) 1990-03-26

Similar Documents

Publication Publication Date Title
DE68905987T2 (de) Korrosionsfester dauermagnet und herstellungsverfahren.
DE69909569T2 (de) Korrosionsbeständiger dauermagnet und verfahren zu seiner herstellung
DE102016219532B4 (de) Sintermagnet auf R-T-B Basis
DE102014105638B4 (de) R-T-B-basierter gesinterter Magnet
DE60201376T2 (de) Korrosionswiderstandsfähiger Seltenerdmetallmagnet und Herstellungsverfahren
DE60319339T2 (de) Verfahren zur herstellung eines seltenerdelement-permanentmagneten auf r-t-b-basis
DE102014221200A1 (de) Verfahren zum herstellen von seltenerdmagneten
DE4402783B4 (de) Nd-Fe-B-System-Dauermagnet
DE69219753T2 (de) Seltenerd-Eisen-Bor Legierungspulver für Dauermagneten
DE102015220415A1 (de) Seltenerd-Dauermagnet und Verfahren zur Herstellung desselben
DE102015105764A1 (de) Permanentmagnet und motor
DE112018000214T5 (de) Magnetpulver, das SM-Fe-N-basierte Kristallpartikel enthält, aus diesem hergestellter Sintermagnet, Verfahren zur Herstellung dieses Magnetpulvers; und Verfahren zur Herstellung des Sintermagneten
DE3786719T2 (de) Seltenerdmagnet und Seltenerdlegierung-Magnetpulver mit grossem Korrosionswiderstand.
DE69006459T2 (de) Seltenerd-Eisen-Bor-Dauermagnet.
DE3047636C2 (enExample)
DE69009013T2 (de) Seltenerd-Dauermagnet mit einer korrosionswiderstandsfähigen Schicht und Herstellungsverfahren.
DE69400618T2 (de) Verfahren zum Schutz von Magnetpudern und verdichte Dauermagneten, Typ Nd-Fe-B, gegen Oxydation und atmospherische Korrosion
DE69725750T2 (de) Pulver für Permanentmagnet, Herstellungsverfahren davon und mit diesem Pulver hergestellter anisotroper Permanentmagnet
EP0255816A2 (de) Verfahren zur Herstellung korrosionsbeständiger, hartmagnetischer Pulver für die Magneterzeugung, Magnete aus hartmagnetischen Pulver und Verfahren zu deren Herstellung
DE69728547T2 (de) Korrosionsfeste dauermagnet und herstellungsverfahren
WO1997017709A1 (de) MAGNETMATERIAL UND DAUERMAGNET DES NdFeB-TYPS
DE3208835A1 (de) Unloesliche elektrode und elektrochemische vorrichtung
EP4074856A1 (en) Rare earth sintered magnet
EP0923779A1 (de) SE-Fe-B-DAUERMAGNET UND VERFAHREN ZU SEINER HERSTELLUNG
DE112005000842B4 (de) Verfahren zum Verleihen von Widerstand gegenüber Wasserstoff an einen Artikel

Legal Events

Date Code Title Description
8364 No opposition during term of opposition