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BRPI0508979A - material magnético de óxido e magneto sinterizado - Google Patents

material magnético de óxido e magneto sinterizado

Info

Publication number
BRPI0508979A
BRPI0508979A BRPI0508979-4A BRPI0508979A BRPI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A BR PI0508979 A BRPI0508979 A BR PI0508979A
Authority
BR
Brazil
Prior art keywords
magnet
magnetic material
oxide material
sintered oxide
group
Prior art date
Application number
BRPI0508979-4A
Other languages
English (en)
Inventor
Yoshinori Kobayashi
Seiichi Kosokawa
Sachio Toyota
Original Assignee
Neomax 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 Neomax Co Ltd filed Critical Neomax Co Ltd
Publication of BRPI0508979A publication Critical patent/BRPI0508979A/pt
Publication of BRPI0508979B1 publication Critical patent/BRPI0508979B1/pt

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    • 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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    • C04B35/01—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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  • Engineering & Computer Science (AREA)
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  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

MATERIAL MAGNéTICO DE óXIDO DE MAGNETO SINTERIZADO. A presente invenção refere-se a um material magnético de óxido de acordo com a presente invenção que é representado pela fórmula: (1.x) CaO.(x/2)R~ 2~ O~ 3~. (n.y/2)Fe~ 2~O~ 3~.yMO, onde R é pelo menos um elemento selecionado do grupo que consiste em La, nd e Pr e sempre inclui la,M que é pelo menos um elemento selecionado do grupo consistindo em Co, Zn, Ni e Mn e sempre inclui Co, e as frações molares x,y, e n satisfazem 0,4.x.0,6,0,2.y0,35,4.n.6 e 1,4.x/y.2,5. O material magnético de óxido inclui uma ferrita tendo uma estrutura de magnetoplumbita do tipi M hexagonal como uma fase principal.
BRPI0508979A 2004-09-10 2005-09-08 material magnético de óxido e magneto sinterizado BRPI0508979B1 (pt)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014084059A1 (ja) * 2012-11-30 2014-06-05 日立金属株式会社 フェライト化合物

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4952957B2 (ja) 2006-03-10 2012-06-13 日立金属株式会社 回転機、ボンド磁石、マグネットロール、及びフェライト焼結磁石の製造方法
US20110126550A1 (en) * 2008-07-08 2011-06-02 Technical University Of Denmark Magnetocaloric refrigerators
KR101649242B1 (ko) 2009-06-30 2016-08-18 히타치 긴조쿠 가부시키가이샤 페라이트 소결 자석의 제조 방법 및 페라이트 소결 자석
KR20120041744A (ko) * 2009-07-08 2012-05-02 티디케이가부시기가이샤 페라이트 자성 재료
JP4883334B2 (ja) 2010-03-10 2012-02-22 日立金属株式会社 フェライト焼結磁石及びその製造方法
KR101858484B1 (ko) * 2010-12-28 2018-06-27 히타치 긴조쿠 가부시키가이샤 페라이트 소결 자석 및 그 제조 방법
EP2881956B1 (en) 2012-07-31 2017-07-05 Hitachi Metals, Ltd. Sintered ferrite magnet and its production method
WO2014034401A1 (ja) 2012-08-31 2014-03-06 日立金属株式会社 フェライト仮焼体、フェライト焼結磁石の製造方法及びフェライト焼結磁石
KR101836965B1 (ko) * 2012-09-28 2018-03-09 히타치 긴조쿠 가부시키가이샤 페라이트 소결 자석 및 그 제조 방법
GB2509753A (en) * 2013-01-14 2014-07-16 Bae Systems Plc Ferrite Fibre Composites
JP6596829B2 (ja) * 2014-03-07 2019-10-30 Ｔｄｋ株式会社 フェライト焼結磁石及びそれを備えるモータ
KR102277414B1 (ko) 2015-10-16 2021-07-14 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
KR102588230B1 (ko) 2016-06-20 2023-10-13 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
KR102588231B1 (ko) 2016-06-20 2023-10-13 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
KR102407046B1 (ko) 2016-06-20 2022-06-10 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
JP7247467B2 (ja) * 2017-03-23 2023-03-29 株式会社プロテリアル フェライト焼結磁石の製造方法及びフェライト焼結磁石
KR102258552B1 (ko) 2017-03-31 2021-06-01 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
JP6414372B1 (ja) 2017-05-24 2018-10-31 日立金属株式会社 フェライト焼結磁石
EP3633697A4 (en) * 2017-05-24 2021-03-10 Hitachi Metals, Ltd. SRIED FERRITE MAGNET
JP7000954B2 (ja) * 2018-03-28 2022-01-19 Tdk株式会社 フェライト焼結磁石
CN110323025B (zh) * 2018-03-28 2021-12-10 Tdk株式会社 铁氧体烧结磁铁
JP7047530B2 (ja) * 2018-03-28 2022-04-05 Tdk株式会社 フェライト焼結磁石及びフェライト焼結磁石の製造方法
US12243668B2 (en) 2019-03-29 2025-03-04 Tdk Corporation Ferrite sintered magnet, ferrite particles, bonded magnet, and rotating electrical machine
JP7338361B2 (ja) 2019-09-25 2023-09-05 Tdk株式会社 フェライト焼結磁石
JP7347296B2 (ja) * 2020-03-30 2023-09-20 Tdk株式会社 フェライト焼結磁石および回転電気機械
JP2022138110A (ja) * 2021-03-09 2022-09-22 Tdk株式会社 フェライト焼結磁石、及び、フェライト焼結磁石の製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05182820A (ja) 1991-12-27 1993-07-23 Hitachi Metals Ltd 異方性フェライト磁石の製造方法
JP2922864B2 (ja) 1996-11-18 1999-07-26 日立金属株式会社 フェライト磁石およびその製造方法
CN1155022C (zh) 1997-02-25 2004-06-23 Tdk株式会社 氧化物磁性材料、铁氧体颗粒、烧结磁体、粘结磁体、磁记录介质和电机
EP0940823B1 (en) * 1997-09-19 2008-03-05 TDK Corporation Sintered magnet
JP3181559B2 (ja) * 1997-09-19 2001-07-03 ティーディーケイ株式会社 酸化物磁性材料、フェライト粒子、ボンディット磁石、焼結磁石、これらの製造方法および磁気記録媒体
EP0940824B2 (en) 1997-09-19 2014-06-11 TDK Corporation Magnet powder, sintered magnet, method of manufacturing these materials, bonded magnet, motor, and magnetic recording medium
JP3957458B2 (ja) * 1998-11-26 2007-08-15 株式会社Ｎｅｏｍａｘ フェライト磁石粉末の製造方法および磁石の製造方法
JP3682850B2 (ja) 1999-06-23 2005-08-17 日立金属株式会社 回転機
JP2002246216A (ja) * 2000-12-15 2002-08-30 Sumitomo Special Metals Co Ltd 永久磁石、およびその製造方法
JP2002313618A (ja) * 2001-02-07 2002-10-25 Sumitomo Special Metals Co Ltd 永久磁石、およびその製造方法
FR2831317B1 (fr) 2001-10-19 2004-10-15 Ugimag Sa Aimants de type ferrite economiques et a proprietes ameliorees

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014084059A1 (ja) * 2012-11-30 2014-06-05 日立金属株式会社 フェライト化合物

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EP1808422A4 (en) 2011-04-13
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US7758767B2 (en) 2010-07-20
KR100910048B1 (ko) 2009-07-30
CN1956935B (zh) 2010-05-05
US20100237273A1 (en) 2010-09-23
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KR20060132917A (ko) 2006-12-22
EP1808422A1 (en) 2007-07-18
EP1808422B1 (en) 2012-06-06

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