JPS647503A - Permanent magnet with high thermal stability - Google Patents

Permanent magnet with high thermal stability

Info

Publication number
JPS647503A
JPS647503A JP62183881A JP18388187A JPS647503A JP S647503 A JPS647503 A JP S647503A JP 62183881 A JP62183881 A JP 62183881A JP 18388187 A JP18388187 A JP 18388187A JP S647503 A JPS647503 A JP S647503A
Authority
JP
Japan
Prior art keywords
thermal stability
magnet
permanent magnet
high thermal
zcoxbygaz
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
JP62183881A
Other languages
Japanese (ja)
Other versions
JP2751109B2 (en
Inventor
Minoru Endo
Masaaki Tokunaga
Hiroshi Kogure
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Publication of JPS647503A publication Critical patent/JPS647503A/en
Priority to JP2188347A priority Critical patent/JPH03148804A/en
Application granted granted Critical
Publication of JP2751109B2 publication Critical patent/JP2751109B2/en
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
    • 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)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

PURPOSE:To obtain the high thermal stability of a permanent magnet by making it consist of R(Fe1-x-y-zCOxByGaz)A, with the rest of the constituents being impurities that are inevitable results of manufacture, and increasing both Curie point and coercive force thereof. CONSTITUTION:A permanent magnet consists of R(Fe1-x-y-zCOxByGaz)A (wherein R is a combination of one or more kinds of elements among Nd, Pr, Ce and other rare earth elements, 0<=x<=0.7, 0.02<=y<=0.3, 0.001<=z<=0.15, 4.0<=A<=7.5), with the rest of the constituents being impurities that are inevitable results of manufacture. In the grain boundary of an R-Fe-B magnet, there exists a BCC phase that is a soft magnetic phase, where it is assumed that the coercive force of the magnet is generated by pinning the magnetic domain walls. Addition of Ga causes Curie temperature Tc of the BCC phase to increase and, the thermal stability of the magnet is improved.
JP62183881A 1986-07-23 1987-07-23 Sintered permanent magnet with good thermal stability Expired - Lifetime JP2751109B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2188347A JPH03148804A (en) 1987-07-23 1990-07-17 Permanent magnet excellent in thermal stability and manufacture thereof

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP17298786 1986-07-23
JP61-172987 1986-07-23
JP61-185905 1986-08-07
JP18590586 1986-08-07
JP61-243490 1986-10-14
JP24349086 1986-10-14
JP85787 1987-01-06
JP62-857 1987-01-06

Related Child Applications (3)

Application Number Title Priority Date Filing Date
JP2188346A Division JPH03148803A (en) 1990-07-17 1990-07-17 Permanent magnet
JP2188347A Division JPH03148804A (en) 1987-07-23 1990-07-17 Permanent magnet excellent in thermal stability and manufacture thereof
JP26614497A Division JP3255593B2 (en) 1997-09-30 1997-09-30 Manufacturing method of sintered permanent magnet with good thermal stability

Publications (2)

Publication Number Publication Date
JPS647503A true JPS647503A (en) 1989-01-11
JP2751109B2 JP2751109B2 (en) 1998-05-18

Family

ID=27453258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62183881A Expired - Lifetime JP2751109B2 (en) 1986-07-23 1987-07-23 Sintered permanent magnet with good thermal stability

Country Status (5)

Country Link
EP (2) EP0421488B1 (en)
JP (1) JP2751109B2 (en)
KR (1) KR910001065B1 (en)
CN (1) CN1036554C (en)
DE (2) DE3783975T2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532701A1 (en) * 1990-06-08 1993-03-24 SPS TECHNOLOGIES, Inc. Improved magnetic materials and process for producing the same
JPWO2002103719A1 (en) * 2001-06-19 2004-10-07 三菱電機株式会社 Rare earth permanent magnet material
WO2008139559A1 (en) 2007-05-02 2008-11-20 Hitachi Metals, Ltd. R-t-b sintered magnet
WO2008139556A1 (en) 2007-05-02 2008-11-20 Hitachi Metals, Ltd. R-t-b sintered magnet
JP2016509365A (en) * 2012-12-24 2016-03-24 北京中科三環高技術股▲ふん▼有限公司 NdFeB-based sintered magnet and method for producing the same

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983232A (en) * 1987-01-06 1991-01-08 Hitachi Metals, Ltd. Anisotropic magnetic powder and magnet thereof and method of producing same
JPH01257308A (en) * 1987-09-09 1989-10-13 Hitachi Metals Ltd Magnet for voice coil motor
JPS6472502A (en) * 1987-09-11 1989-03-17 Hitachi Metals Ltd Permanent magnet for accelerating particle beam
US5000800A (en) * 1988-06-03 1991-03-19 Masato Sagawa Permanent magnet and method for producing the same
DE3825358A1 (en) * 1988-07-26 1990-02-01 Siemens Ag Magnetic material and method for producing it
JPH0257662A (en) * 1988-08-23 1990-02-27 M G:Kk Rapidly cooled thin strip alloy for bond magnet
DE3840414A1 (en) * 1988-11-30 1990-05-31 Siemens Ag Process for producing a body containing a hard magnetic material
ES2056642T3 (en) * 1990-03-16 1994-10-01 Secr Defence Brit FERROMAGNETIC MATERIALS.
US5143560A (en) * 1990-04-20 1992-09-01 Hitachi Metals, Inc., Ltd. Method for forming Fe-B-R-T alloy powder by hydrogen decrepitation of die-upset billets
DE69202515T2 (en) * 1991-06-04 1995-09-21 Shinetsu Chemical Co Process for the production of two-phase permanent magnets based on rare earths.
US5405455A (en) * 1991-06-04 1995-04-11 Shin-Etsu Chemical Co. Ltd. Rare earth-based permanent magnet
DE4331563A1 (en) * 1992-09-18 1994-03-24 Hitachi Metals Ltd Sintered permanent magnet with good thermal stability - containing defined percentages by weight of specified elements
US5472525A (en) * 1993-01-29 1995-12-05 Hitachi Metals, Ltd. Nd-Fe-B system permanent magnet
DE19541948A1 (en) * 1995-11-10 1997-05-15 Schramberg Magnetfab Magnetic material and permanent magnet of the NdFeB type
AU2002346235A1 (en) * 2002-06-28 2004-01-19 Aichi Steel Corporation Alloy for use in bonded magnet, isotropic magnet powder and anisotropic magnet powder and method for production thereof, and bonded magnet
CN101240398B (en) * 2007-02-07 2010-12-29 罗阳 Intermetallic compound anisotropy magnetic powder, preparation method and special device
JP5163630B2 (en) * 2009-12-18 2013-03-13 トヨタ自動車株式会社 Rare earth magnet and manufacturing method thereof
US10497497B2 (en) 2012-02-02 2019-12-03 Santoku Corporation R-T-B—Ga-based magnet material alloy and method of producing the same
JP6084601B2 (en) * 2012-02-23 2017-02-22 Ｊｘ金属株式会社 Neodymium rare earth permanent magnet and manufacturing method thereof
CN104952574A (en) 2014-03-31 2015-09-30 厦门钨业股份有限公司 Nd-Fe-B-Cu type sintered magnet containing W
CN104020032A (en) * 2014-06-17 2014-09-03 攀钢集团攀枝花钢钒有限公司 Preparation method of test specimens for unbreakable ferro-vanadium chemical analysis
CN110148506A (en) * 2019-04-03 2019-08-20 宁波同创强磁材料有限公司 Widen the method for rare-earth permanent magnet sintering temperature window and the preparation method of rare-earth permanent magnet
CN111627633B (en) * 2020-06-28 2022-05-31 福建省长汀金龙稀土有限公司 R-T-B magnetic material and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218455A (en) * 1984-04-12 1985-11-01 Seiko Epson Corp Permanent magnetic alloy
JPS60224761A (en) * 1984-04-23 1985-11-09 Seiko Epson Corp Permanent magnet alloy
JPS61179803A (en) * 1985-02-05 1986-08-12 Seiko Epson Corp Production of ferromagnetic resin composition
JPS62136551A (en) * 1985-12-10 1987-06-19 Daido Steel Co Ltd Permanent magnet material
JPS6318603A (en) * 1986-07-11 1988-01-26 Toshiba Corp Permanent magnet

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1316375C (en) * 1982-08-21 1993-04-20 Masato Sagawa Magnetic materials and permanent magnets
JPS6034005A (en) * 1983-08-04 1985-02-21 Sumitomo Special Metals Co Ltd Permanent magnet
JPS60228652A (en) * 1984-04-24 1985-11-13 Nippon Gakki Seizo Kk Magnet containing rare earth element and its manufacture
JPH062930B2 (en) * 1984-05-14 1994-01-12 セイコーエプソン株式会社 Rare earth permanent magnet
JPS60243247A (en) * 1984-05-15 1985-12-03 Namiki Precision Jewel Co Ltd Permanent magnet alloy
JPS6139507A (en) * 1984-07-30 1986-02-25 Seiko Instr & Electronics Ltd Neodymium-iron permanent magnet
JPH0685369B2 (en) * 1985-05-17 1994-10-26 日立金属株式会社 Permanent magnet manufacturing method
US4859254A (en) * 1985-09-10 1989-08-22 Kabushiki Kaisha Toshiba Permanent magnet
KR880000992A (en) * 1986-06-12 1988-03-30 와다리 스기이찌로오 Permanent magnet
JP3084975B2 (en) * 1992-11-06 2000-09-04 松下電器産業株式会社 Liquid crystal display cell manufacturing equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60218455A (en) * 1984-04-12 1985-11-01 Seiko Epson Corp Permanent magnetic alloy
JPS60224761A (en) * 1984-04-23 1985-11-09 Seiko Epson Corp Permanent magnet alloy
JPS61179803A (en) * 1985-02-05 1986-08-12 Seiko Epson Corp Production of ferromagnetic resin composition
JPS62136551A (en) * 1985-12-10 1987-06-19 Daido Steel Co Ltd Permanent magnet material
JPS6318603A (en) * 1986-07-11 1988-01-26 Toshiba Corp Permanent magnet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0532701A1 (en) * 1990-06-08 1993-03-24 SPS TECHNOLOGIES, Inc. Improved magnetic materials and process for producing the same
JPWO2002103719A1 (en) * 2001-06-19 2004-10-07 三菱電機株式会社 Rare earth permanent magnet material
WO2008139559A1 (en) 2007-05-02 2008-11-20 Hitachi Metals, Ltd. R-t-b sintered magnet
WO2008139556A1 (en) 2007-05-02 2008-11-20 Hitachi Metals, Ltd. R-t-b sintered magnet
JP2016509365A (en) * 2012-12-24 2016-03-24 北京中科三環高技術股▲ふん▼有限公司 NdFeB-based sintered magnet and method for producing the same

Also Published As

Publication number Publication date
DE3750661D1 (en) 1994-11-17
JP2751109B2 (en) 1998-05-18
KR910001065B1 (en) 1991-02-23
CN87105186A (en) 1988-02-03
KR880002202A (en) 1988-04-29
EP0421488B1 (en) 1994-10-12
DE3783975T2 (en) 1993-05-27
EP0258609A3 (en) 1989-04-26
EP0421488A3 (en) 1991-08-28
EP0258609B1 (en) 1993-02-03
DE3750661T2 (en) 1995-04-06
CN1036554C (en) 1997-11-26
EP0258609A2 (en) 1988-03-09
DE3783975D1 (en) 1993-03-18
EP0421488A2 (en) 1991-04-10

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