CN102511071B - 永久磁铁及永久磁铁的制造方法 - Google Patents

永久磁铁及永久磁铁的制造方法 Download PDF

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Publication number
CN102511071B
CN102511071B CN2011800039595A CN201180003959A CN102511071B CN 102511071 B CN102511071 B CN 102511071B CN 2011800039595 A CN2011800039595 A CN 2011800039595A CN 201180003959 A CN201180003959 A CN 201180003959A CN 102511071 B CN102511071 B CN 102511071B
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sintering
magnet
permanent magnet
organo
metallic compound
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CN102511071A (zh
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尾关出光
久米克也
平野敬祐
大牟礼智弘
太白启介
尾崎孝志
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Nitto Denko Corp
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/16—Metallic particles coated with a non-metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/086—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 in the form of particles, e.g. powder pressed, sintered, or bound 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
    • H01F41/0266—Moulding; Pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • 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
    • H01F41/0293—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 diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
CN2011800039595A 2010-03-31 2011-03-28 永久磁铁及永久磁铁的制造方法 Expired - Fee Related CN102511071B (zh)

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JP2010-081963 2010-03-31
JP2010081963 2010-03-31
PCT/JP2011/057570 WO2011125589A1 (ja) 2010-03-31 2011-03-28 永久磁石及び永久磁石の製造方法

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CN102511071A CN102511071A (zh) 2012-06-20
CN102511071B true CN102511071B (zh) 2013-04-03

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US (1) US8491728B2 (enExample)
EP (1) EP2503570B1 (enExample)
JP (1) JP4923148B2 (enExample)
KR (1) KR101189856B1 (enExample)
CN (1) CN102511071B (enExample)
TW (1) TW201212065A (enExample)
WO (1) WO2011125589A1 (enExample)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
EP2503562B1 (en) * 2010-03-31 2014-07-02 Nitto Denko Corporation Manufacturing method for permanent magnet
JP4923151B2 (ja) * 2010-03-31 2012-04-25 日東電工株式会社 永久磁石及び永久磁石の製造方法
KR101189936B1 (ko) * 2010-03-31 2012-10-12 닛토덴코 가부시키가이샤 영구 자석 및 영구 자석의 제조 방법
KR101189856B1 (ko) * 2010-03-31 2012-10-10 닛토덴코 가부시키가이샤 영구 자석 및 영구 자석의 제조 방법
WO2011125595A1 (ja) * 2010-03-31 2011-10-13 日東電工株式会社 永久磁石及び永久磁石の製造方法
JP5011420B2 (ja) * 2010-05-14 2012-08-29 日東電工株式会社 永久磁石及び永久磁石の製造方法
JP5908247B2 (ja) * 2011-09-30 2016-04-26 日東電工株式会社 永久磁石の製造方法
CN104674115A (zh) 2013-11-27 2015-06-03 厦门钨业股份有限公司 一种低b的稀土磁铁
CN104952574A (zh) * 2014-03-31 2015-09-30 厦门钨业股份有限公司 一种含W的Nd-Fe-B-Cu系烧结磁铁
KR101719871B1 (ko) * 2014-07-14 2017-03-24 한양대학교 산학협력단 중희토류 원소를 포함하지 않는 R-Fe-B계 소결자석 및 이의 제조방법
KR20190066492A (ko) 2017-12-05 2019-06-13 권상철 함초를 이용하여 흙냄새와 나트륨을 낮춘 민물매운탕 시즈닝 및 그 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005203555A (ja) * 2004-01-15 2005-07-28 Neomax Co Ltd 焼結磁石の製造方法
JP2009259956A (ja) * 2008-04-15 2009-11-05 Nitto Denko Corp 永久磁石及び永久磁石の製造方法

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3298219B2 (ja) 1993-03-17 2002-07-02 日立金属株式会社 希土類―Ｆｅ−Ｃｏ−Ａｌ−Ｖ−Ｇａ−Ｂ系焼結磁石
US5641363A (en) * 1993-12-27 1997-06-24 Tdk Corporation Sintered magnet and method for making
JP3396323B2 (ja) * 1994-02-07 2003-04-14 三菱電機株式会社 高抵抗化合物半導体層とその結晶成長法，及び該高抵抗化合物半導体層を用いた半導体装置
JPH07240331A (ja) * 1994-03-01 1995-09-12 Hitachi Metals Ltd 希土類金属間化合物磁石の製造方法
JPH07263265A (ja) * 1994-03-18 1995-10-13 Hitachi Metals Ltd 希土類金属間化合物永久磁石およびその製造方法
WO2001091139A1 (en) * 2000-05-24 2001-11-29 Sumitomo Special Metals Co., Ltd. Permanent magnet including multiple ferromagnetic phases and method for producing the magnet
JP2004250781A (ja) 2002-10-08 2004-09-09 Neomax Co Ltd 焼結型永久磁石およびその製造方法
CN1303623C (zh) * 2002-10-17 2007-03-07 株式会社新王磁材 纳米复合磁体及制备该磁体的方法
US7199690B2 (en) * 2003-03-27 2007-04-03 Tdk Corporation R-T-B system rare earth permanent magnet
JP4525072B2 (ja) 2003-12-22 2010-08-18 日産自動車株式会社 希土類磁石およびその製造方法
US9551052B2 (en) * 2005-07-15 2017-01-24 Hitachi Metals, Ltd. Rare earth sintered magnet and method for production thereof
WO2008139556A1 (ja) * 2007-05-02 2008-11-20 Hitachi Metals, Ltd. Ｒ－ｔ－ｂ系焼結磁石
JP5057111B2 (ja) * 2009-07-01 2012-10-24 信越化学工業株式会社 希土類磁石の製造方法
JP4923151B2 (ja) * 2010-03-31 2012-04-25 日東電工株式会社 永久磁石及び永久磁石の製造方法
EP2503562B1 (en) * 2010-03-31 2014-07-02 Nitto Denko Corporation Manufacturing method for permanent magnet
JP4865100B2 (ja) * 2010-03-31 2012-02-01 日東電工株式会社 永久磁石及び永久磁石の製造方法
KR101189936B1 (ko) * 2010-03-31 2012-10-12 닛토덴코 가부시키가이샤 영구 자석 및 영구 자석의 제조 방법
WO2011125595A1 (ja) * 2010-03-31 2011-10-13 日東電工株式会社 永久磁石及び永久磁石の製造方法
KR101189856B1 (ko) * 2010-03-31 2012-10-10 닛토덴코 가부시키가이샤 영구 자석 및 영구 자석의 제조 방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005203555A (ja) * 2004-01-15 2005-07-28 Neomax Co Ltd 焼結磁石の製造方法
JP2009259956A (ja) * 2008-04-15 2009-11-05 Nitto Denko Corp 永久磁石及び永久磁石の製造方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP平7-240331A 1995.09.12
JP平7-263265A 1995.10.13

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TWI374462B (enExample) 2012-10-11
JP2011228656A (ja) 2011-11-10
KR20120049358A (ko) 2012-05-16
KR101189856B1 (ko) 2012-10-10
EP2503570A4 (en) 2012-12-05
TW201212065A (en) 2012-03-16
US8491728B2 (en) 2013-07-23
EP2503570B1 (en) 2015-01-21
WO2011125589A1 (ja) 2011-10-13
EP2503570A1 (en) 2012-09-26
JP4923148B2 (ja) 2012-04-25
CN102511071A (zh) 2012-06-20
US20120182107A1 (en) 2012-07-19

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