BR0213387A - mãs de tipo ferrita econÈmicos e com propriedades melhoradas - Google Patents

mãs de tipo ferrita econÈmicos e com propriedades melhoradas

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Publication number
BR0213387A
BR0213387A BR0213387-3A BR0213387A BR0213387A BR 0213387 A BR0213387 A BR 0213387A BR 0213387 A BR0213387 A BR 0213387A BR 0213387 A BR0213387 A BR 0213387A
Authority
BR
Brazil
Prior art keywords
low
improved properties
ferrite
type hands
element chosen
Prior art date
Application number
BR0213387-3A
Other languages
English (en)
Inventor
Antoine Morel
Philippe Tenaud
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
Application filed by Ugimag Sa filed Critical Ugimag Sa
Publication of BR0213387A publication Critical patent/BR0213387A/pt

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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
    • 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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    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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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
    • C04B35/2608—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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    • C04B35/2641—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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  • 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)

Abstract

"ìMãS DE TIPO FERRITA ECONÈMICOS E COM PROPRIEDADES MELHORADAS". A presente invenção refere-se a um ímã de tipo ferrita compreendendo uma fase magnetoplumbita de fórmula M~ 1-x~ R~ x~ Fe~ 12-Y~ T~ y~ O~ 19~, na qual: - M designa pelo menos um elemento escolhido dentre o grupo constituído por Sr, Ba, Ca e Pb; - R designa pelo menos um elemento escolhido pelas terras raras e Bi; - T designa pelo menos um elemento escolhido dentre Co, Mn, Ni, Zn; - 0,15 < x < 0,42 - 0,50 < <244> = y/x < 0,90 de maneira a ter um ímã ferrita que apresente simultaneamente uma taxa reduzida em elemento T e um índice global de desempenho GIP = Br + 0,5. Hk pelo menos igual a 580, e de preferência pelo menos igual a 585, Br sendo a indução remanente expressa em mT, Hk correspondendo ao campo H, expresso em kA/m, para B = 0,9.Br.
BR0213387-3A 2001-10-19 2002-10-14 mãs de tipo ferrita econÈmicos e com propriedades melhoradas BR0213387A (pt)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
BR0213387A true BR0213387A (pt) 2004-12-21

Family

ID=8868510

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0213387-3A BR0213387A (pt) 2001-10-19 2002-10-14 mãs de tipo ferrita econÈmicos e com propriedades melhoradas

Country Status (9)

Country Link
US (1) US20040251997A1 (pt)
EP (1) EP1438270A1 (pt)
JP (1) JP2005505944A (pt)
KR (1) KR100845201B1 (pt)
CN (1) CN100386288C (pt)
BR (1) BR0213387A (pt)
FR (1) FR2831317B1 (pt)
MX (1) MXPA04003449A (pt)
WO (1) WO2003033432A1 (pt)

Families Citing this family (17)

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Publication number Priority date Publication date Assignee Title
KR100910048B1 (ko) * 2004-09-10 2009-07-30 히타치 긴조쿠 가부시키가이샤 산화물자성재료 및 소결자석
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
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US20040251997A1 (en) 2004-12-16
KR100845201B1 (ko) 2008-07-10
WO2003033432A1 (fr) 2003-04-24
FR2831317B1 (fr) 2004-10-15
FR2831317A1 (fr) 2003-04-25
EP1438270A1 (fr) 2004-07-21
CN1571761A (zh) 2005-01-26

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