FR2831317B1 - Aimants de type ferrite economiques et a proprietes ameliorees - Google Patents

Aimants de type ferrite economiques et a proprietes ameliorees

Info

Publication number
FR2831317B1
FR2831317B1 FR0113542A FR0113542A FR2831317B1 FR 2831317 B1 FR2831317 B1 FR 2831317B1 FR 0113542 A FR0113542 A FR 0113542A FR 0113542 A FR0113542 A FR 0113542A FR 2831317 B1 FR2831317 B1 FR 2831317B1
Authority
FR
France
Prior art keywords
improved properties
ferrite magnets
economical
economical ferrite
magnets
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
FR0113542A
Other languages
English (en)
Other versions
FR2831317A1 (fr
Inventor
Antoine Morel
Philippe Tenaud
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.)
Ugimag SA
Original Assignee
Ugimag SA
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
Priority to FR0113542A priority Critical patent/FR2831317B1/fr
Application filed by Ugimag SA filed Critical Ugimag SA
Priority to US10/491,895 priority patent/US20040251997A1/en
Priority to PCT/FR2002/003516 priority patent/WO2003033432A1/fr
Priority to BR0213387-3A priority patent/BR0213387A/pt
Priority to CNB028206649A priority patent/CN100386288C/zh
Priority to EP02801367A priority patent/EP1438270A1/fr
Priority to JP2003536177A priority patent/JP2005505944A/ja
Priority to MXPA04003449A priority patent/MXPA04003449A/es
Priority to KR1020047005733A priority patent/KR100845201B1/ko
Publication of FR2831317A1 publication Critical patent/FR2831317A1/fr
Application granted granted Critical
Publication of FR2831317B1 publication Critical patent/FR2831317B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H01F1/10—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—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 non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
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    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/009—Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00—Compounds of cobalt
    • C01G51/006—Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead
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    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/6261—Milling
    • C04B35/6262—Milling of calcined, sintered clinker or ceramics
    • 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
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    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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    • C01P2006/42—Magnetic properties
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Compounds Of Iron (AREA)
FR0113542A 2001-10-19 2001-10-19 Aimants de type ferrite economiques et a proprietes ameliorees Expired - Fee Related FR2831317B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR0113542A FR2831317B1 (fr) 2001-10-19 2001-10-19 Aimants de type ferrite economiques et a proprietes ameliorees
PCT/FR2002/003516 WO2003033432A1 (fr) 2001-10-19 2002-10-14 Aimants de type ferrite economiques et a proprietes ameliorees
BR0213387-3A BR0213387A (pt) 2001-10-19 2002-10-14 mãs de tipo ferrita econÈmicos e com propriedades melhoradas
CNB028206649A CN100386288C (zh) 2001-10-19 2002-10-14 具有改良性能的经济铁氧体型磁体
US10/491,895 US20040251997A1 (en) 2001-10-19 2002-10-14 Economical ferrite-type magnets with enhanced properties
EP02801367A EP1438270A1 (fr) 2001-10-19 2002-10-14 Aimants de type ferrite economiques et a proprietes ameliorees
JP2003536177A JP2005505944A (ja) 2001-10-19 2002-10-14 経済的かつ物性の向上したフェライト・タイプの磁石
MXPA04003449A MXPA04003449A (es) 2001-10-19 2002-10-14 Imanes de tipo ferrita economicos y con propiedades mejoradas.
KR1020047005733A KR100845201B1 (ko) 2001-10-19 2002-10-14 물성이 개선된 경제적인 페라이트형 자석

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0113542A FR2831317B1 (fr) 2001-10-19 2001-10-19 Aimants de type ferrite economiques et a proprietes ameliorees

Publications (2)

Publication Number Publication Date
FR2831317A1 FR2831317A1 (fr) 2003-04-25
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Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA06015044A (es) * 2004-09-10 2007-04-25 Neomax Co Ltd Material magnetico de oxido e iman sinterizado.
US7837893B2 (en) 2005-11-25 2010-11-23 Hitachi Metals, Ltd. Oxide-type, magnetic material and its production method, and sintered ferrite magnet and its production method
US7919007B2 (en) * 2005-12-19 2011-04-05 Tdk Corporation Ferrite magnetic material
JP5316737B2 (ja) * 2006-01-11 2013-10-16 Ｔｄｋ株式会社 フェライト磁性材料
EP2199266B1 (fr) * 2008-12-18 2016-05-11 Tridelta Hartferrite GmbH Matière active dure magnétique
KR101082389B1 (ko) 2011-05-31 2011-11-11 쌍용머티리얼 주식회사 마그네토플럼바이트형 페라이트 자성재료 및 이로부터 유도된 세그멘트형 영구자석
CN103058641B (zh) * 2011-12-14 2014-04-23 南京梅山冶金发展有限公司 一种制备非稀土高磁性永磁铁氧体材料的方法
JP5650270B2 (ja) * 2013-03-29 2015-01-07 株式会社リケン マグネトプランバイト型六方晶フェライト及びノイズ抑制シート
CN104003704B (zh) * 2014-02-27 2015-08-19 横店集团东磁股份有限公司 一种无镧钴永磁铁氧体的制备方法
CN104072124A (zh) * 2014-06-30 2014-10-01 中钢天源(马鞍山)通力磁材有限公司 一种直流变频电机用永磁铁氧体磁体的制备方法
CN107324406B (zh) * 2017-07-31 2019-09-24 电子科技大学 一种复合改性的锶铁氧体粉体的制备方法
JP7323221B2 (ja) * 2019-07-15 2023-08-08 漢陽大学校エリカ産学協力団 六角板状のフェライト構造体及びその製造方法
JP2021155317A (ja) * 2020-03-30 2021-10-07 Tdk株式会社 フェライト焼結磁石および回転電気機械
KR20220026316A (ko) * 2020-08-25 2022-03-04 현대자동차주식회사 GHz 대역의 전자파 흡수입자 및 이를 포함하는 전자파 흡수재
KR20220026315A (ko) * 2020-08-25 2022-03-04 현대자동차주식회사 GHz 대역의 전자파 흡수입자 및 이를 포함하는 전자파 흡수재
CN112299836A (zh) * 2020-11-25 2021-02-02 南通冠优达磁业有限公司 一种高频低损耗软磁铁氧体材料及制备方法
CN115849894B (zh) * 2022-11-07 2023-11-10 安徽龙磁科技股份有限公司 一种高磁特性永磁铁氧体材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2897871B2 (ja) * 1995-08-11 1999-05-31 ティーディーケイ株式会社 磁石粉末、焼結磁石、ボンディッド磁石および磁気記録媒体
WO1998038654A1 (fr) * 1997-02-25 1998-09-03 Tdk Corporation Materiau magnetique a base d'oxyde, particule de ferrite, aimant obtenu par frittage, aimant issu d'une liaison, support d'enregistrement magnetique et moteur
EP0940824B2 (fr) * 1997-09-19 2014-06-11 TDK Corporation Poudre d'aimant, aimant fritte, procede de fabrication de ces materiaux, aimant agglomere, moteur, et support d'enregistrement magnetique
FR2785281B1 (fr) * 1999-07-05 2001-04-27 Ugimag Sa Procede de fabrication de poudres ou biscuits d'hexaferrites de type m
JP2001135512A (ja) * 1999-11-08 2001-05-18 Sumitomo Special Metals Co Ltd フェライト磁石粉末および該磁石粉末を用いた磁石およびそれらの製造方法
FR2784498B1 (fr) * 1999-11-30 2001-10-12 Ugimag Sa Procede de fabrication d'aimants du type ferrite

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JP2005505944A (ja) 2005-02-24
MXPA04003449A (es) 2004-07-08
KR20050036879A (ko) 2005-04-20
WO2003033432A1 (fr) 2003-04-24
CN1571761A (zh) 2005-01-26
KR100845201B1 (ko) 2008-07-10
US20040251997A1 (en) 2004-12-16
CN100386288C (zh) 2008-05-07
EP1438270A1 (fr) 2004-07-21
FR2831317A1 (fr) 2003-04-25
BR0213387A (pt) 2004-12-21

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