ATE412966T1 - Gesinterter seltenerd-magnet und verfahren zur verbesserung seiner mechanischen festigkeit und seiner korrosionsbeständigkeit - Google Patents

Gesinterter seltenerd-magnet und verfahren zur verbesserung seiner mechanischen festigkeit und seiner korrosionsbeständigkeit

Info

Publication number
ATE412966T1
ATE412966T1 AT05002670T AT05002670T ATE412966T1 AT E412966 T1 ATE412966 T1 AT E412966T1 AT 05002670 T AT05002670 T AT 05002670T AT 05002670 T AT05002670 T AT 05002670T AT E412966 T1 ATE412966 T1 AT E412966T1
Authority
AT
Austria
Prior art keywords
rare earth
above described
corrosion resistance
mechanical strength
improving
Prior art date
Application number
AT05002670T
Other languages
English (en)
Inventor
Makoto Iwasaki
Chikara Ishizaka
Taku Takeishi
Original Assignee
Tdk Corp
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 Tdk Corp filed Critical Tdk Corp
Application granted granted Critical
Publication of ATE412966T1 publication Critical patent/ATE412966T1/de

Links

Classifications

    • 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
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • 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
    • H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/044—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by jet milling
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
AT05002670T 2004-02-10 2005-02-09 Gesinterter seltenerd-magnet und verfahren zur verbesserung seiner mechanischen festigkeit und seiner korrosionsbeständigkeit ATE412966T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004033231 2004-02-10

Publications (1)

Publication Number Publication Date
ATE412966T1 true ATE412966T1 (de) 2008-11-15

Family

ID=34697873

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05002670T ATE412966T1 (de) 2004-02-10 2005-02-09 Gesinterter seltenerd-magnet und verfahren zur verbesserung seiner mechanischen festigkeit und seiner korrosionsbeständigkeit

Country Status (5)

Country Link
US (1) US7208056B2 (de)
EP (1) EP1564758B1 (de)
CN (1) CN1655294B (de)
AT (1) ATE412966T1 (de)
DE (1) DE602005010623D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006249571A (ja) * 2005-02-10 2006-09-21 Tdk Corp 磁歪素子の製造方法、焼結用容器
US8823478B2 (en) * 2010-03-30 2014-09-02 Tdk Corporation Rare earth sintered magnet, method for producing same, motor and automobile
US9197965B2 (en) * 2013-03-15 2015-11-24 James J. Croft, III Planar-magnetic transducer with improved electro-magnetic circuit
CN103762070B (zh) * 2014-02-25 2016-05-04 浙江爱特新能源汽车有限公司 一种表面改性的稀土永磁磁环的制备方法
GB201511553D0 (en) * 2015-07-01 2015-08-12 Univ Birmingham Magnet production
WO2017061126A1 (ja) * 2015-10-08 2017-04-13 国立大学法人九州工業大学 希土類コバルト系永久磁石
CN108597709B (zh) * 2018-04-26 2020-12-11 安徽省瀚海新材料股份有限公司 一种耐腐蚀烧结钕铁硼的制备方法
CN109036829B (zh) * 2018-08-20 2020-07-07 浙江嘉兴南湖电子器材集团有限公司 一种磁钢片快速成型阶段工艺流程

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1007847B (zh) * 1984-12-24 1990-05-02 住友特殊金属株式会社 制造具有改进耐蚀性磁铁的方法
US5154978A (en) * 1989-03-22 1992-10-13 Tdk Corporation Highly corrosion-resistant rare-earth-iron magnets
JP2794496B2 (ja) 1991-02-22 1998-09-03 同和鉱業株式会社 不可逆減磁の小さい熱安定性に優れたＲ−Ｆｅ−Ｃｏ−Ｂ−Ｃ系永久磁石合金
JPH08330121A (ja) 1995-05-31 1996-12-13 Hitachi Metals Ltd 永久磁石体
US20030041920A1 (en) * 2000-07-17 2003-03-06 Hiroyuki Hoshi Coated r-t-b magnet and method for preparation thereof
DE60106695T2 (de) * 2000-08-11 2005-03-31 Neomax Co., Ltd. Auf einem Seltenerdmetall basierender Permanentmagnet mit einem korrosionsbeständigen Film und Verfahren zu seiner Herstellung
JP3294841B2 (ja) * 2000-09-19 2002-06-24 住友特殊金属株式会社 希土類磁石およびその製造方法
JP2002168188A (ja) * 2000-09-20 2002-06-14 Mitsuba Corp 再生式ポンプ
KR100771676B1 (ko) * 2000-10-04 2007-10-31 가부시키가이샤 네오맥스 희토류 소결자석 및 그 제조방법
KR100921874B1 (ko) * 2001-10-29 2009-10-13 히타치 긴조쿠 가부시키가이샤 물품표면에의 전기도금 피막의 형성방법

Also Published As

Publication number Publication date
US7208056B2 (en) 2007-04-24
DE602005010623D1 (de) 2008-12-11
CN1655294A (zh) 2005-08-17
CN1655294B (zh) 2010-04-28
EP1564758A2 (de) 2005-08-17
EP1564758A3 (de) 2006-03-15
US20050173025A1 (en) 2005-08-11
EP1564758B1 (de) 2008-10-29

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