EP0447567A4 - Corrosion-resistant, rare earth-transition metal magnet and method of production thereof - Google Patents

Corrosion-resistant, rare earth-transition metal magnet and method of production thereof

Info

Publication number
EP0447567A4
EP0447567A4 EP19900914967 EP90914967A EP0447567A4 EP 0447567 A4 EP0447567 A4 EP 0447567A4 EP 19900914967 EP19900914967 EP 19900914967 EP 90914967 A EP90914967 A EP 90914967A EP 0447567 A4 EP0447567 A4 EP 0447567A4
Authority
EP
European Patent Office
Prior art keywords
phase
corrosion
resistant
production
transition metal
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.)
Granted
Application number
EP19900914967
Other versions
EP0447567A1 (en
EP0447567B1 (en
Inventor
Yukiko Kawasaki Steel Corporation Technical Ozaki
Michio Kawasaki Steel Corp. Shimotomai
Yasutaka Kawasaki Steel Corporation Fukuda
Akira Kawasaki Steel Corporation Fujita
Yoko Kawasaki Steel Corporation Kitano
Junichi Kawasaki Steel Corporation Shimomura
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel 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
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Publication of EP0447567A1 publication Critical patent/EP0447567A1/en
Publication of EP0447567A4 publication Critical patent/EP0447567A4/en
Application granted granted Critical
Publication of EP0447567B1 publication Critical patent/EP0447567B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

A two-phase permanent magnet which has not only excellent magnetic characteristics but also significantly high corrosion resistance. It is manufactured by use of two magnetically useful phases as the starting materials. One is an RE2TM14B phase having a high residual flux density; the other is a low-melting RE-TM phase and/or RE-TM-B phase which contributes to the improvement of sinterability and has a function of cleaning the main phase grain boundary and a property of causing the resultant material to be an electrochemically noble composition.
EP90914967A 1989-10-12 1990-10-11 Corrosion-resistant tm-b-re type magnet and method of production thereof Expired - Lifetime EP0447567B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP26394689 1989-10-12
JP263946/89 1989-10-12
JP33502889 1989-12-26
JP335028/89 1989-12-26
JP269635/90 1990-10-09
JP2269635A JP2675430B2 (en) 1989-10-12 1990-10-09 Corrosion resistant rare earth-transition metal magnet and method of manufacturing the same
PCT/JP1990/001315 WO1991006107A1 (en) 1989-10-12 1990-10-11 Corrosion-resistant, rare earth-transition metal magnet and method of production thereof

Publications (3)

Publication Number Publication Date
EP0447567A1 EP0447567A1 (en) 1991-09-25
EP0447567A4 true EP0447567A4 (en) 1992-05-20
EP0447567B1 EP0447567B1 (en) 1996-05-29

Family

ID=27335262

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914967A Expired - Lifetime EP0447567B1 (en) 1989-10-12 1990-10-11 Corrosion-resistant tm-b-re type magnet and method of production thereof

Country Status (6)

Country Link
EP (1) EP0447567B1 (en)
JP (1) JP2675430B2 (en)
KR (1) KR960013029B1 (en)
CA (1) CA2044171C (en)
DE (1) DE69027201T2 (en)
WO (1) WO1991006107A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5405455A (en) * 1991-06-04 1995-04-11 Shin-Etsu Chemical Co. Ltd. Rare earth-based permanent magnet
DE69202515T2 (en) * 1991-06-04 1995-09-21 Shinetsu Chemical Co Process for the production of two-phase permanent magnets based on rare earths.
JP2782024B2 (en) * 1992-01-29 1998-07-30 住友特殊金属株式会社 Method for producing raw material powder for R-Fe-B-based permanent magnet
US5387291A (en) * 1992-03-19 1995-02-07 Sumitomo Special Metals Co., Ltd. Process for producing alloy powder material for R-Fe-B permanent magnets and alloy powder for adjusting the composition therefor
EP0583041B1 (en) * 1992-08-13 1997-02-05 Koninklijke Philips Electronics N.V. Method of manufacturing a permanent magnet on the basis of NdFeB
CN1044940C (en) * 1992-08-13 1999-09-01 Ybm麦格奈克斯公司 Method of manufacturing a permanent magnet on the basis of ndfeb
US5482575A (en) * 1992-12-08 1996-01-09 Ugimag Sa Fe-Re-B type magnetic powder, sintered magnets and preparation method thereof
JPWO2005123974A1 (en) 2004-06-22 2008-04-10 信越化学工業株式会社 R-Fe-B rare earth permanent magnet material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261579A1 (en) * 1986-09-16 1988-03-30 Tokin Corporation A method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder
EP0311049A2 (en) * 1987-10-08 1989-04-12 Kawasaki Steel Corporation Corrosion resistant rare earth metal magnet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2700643B2 (en) * 1987-04-11 1998-01-21 株式会社トーキン Manufacturing method of rare earth permanent magnet with excellent oxidation resistance
JPH0621324B2 (en) * 1986-10-04 1994-03-23 信越化学工業株式会社 Rare earth permanent magnet alloy composition
JPS63127505A (en) * 1986-11-17 1988-05-31 Taiyo Yuden Co Ltd Magnet and manufacture thereof
JPH063763B2 (en) * 1986-12-26 1994-01-12 信越化学工業株式会社 Rare earth permanent magnet manufacturing method
JP2948223B2 (en) * 1987-03-31 1999-09-13 住友特殊金属 株式会社 High performance permanent magnet with excellent corrosion resistance and method of manufacturing the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261579A1 (en) * 1986-09-16 1988-03-30 Tokin Corporation A method for producing a rare earth metal-iron-boron permanent magnet by use of a rapidly-quenched alloy powder
EP0311049A2 (en) * 1987-10-08 1989-04-12 Kawasaki Steel Corporation Corrosion resistant rare earth metal magnet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9106107A1 *

Also Published As

Publication number Publication date
JPH03250607A (en) 1991-11-08
EP0447567A1 (en) 1991-09-25
JP2675430B2 (en) 1997-11-12
CA2044171A1 (en) 1991-04-13
CA2044171C (en) 2000-12-12
DE69027201D1 (en) 1996-07-04
EP0447567B1 (en) 1996-05-29
DE69027201T2 (en) 1996-10-10
WO1991006107A1 (en) 1991-05-02
KR920701999A (en) 1992-08-12
KR960013029B1 (en) 1996-09-25

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