EA200000224A1 - Магнитная жидкость и способ ее получения - Google Patents

Магнитная жидкость и способ ее получения

Info

Publication number
EA200000224A1
EA200000224A1 EA200000224A EA200000224A EA200000224A1 EA 200000224 A1 EA200000224 A1 EA 200000224A1 EA 200000224 A EA200000224 A EA 200000224A EA 200000224 A EA200000224 A EA 200000224A EA 200000224 A1 EA200000224 A1 EA 200000224A1
Authority
EA
Eurasian Patent Office
Prior art keywords
magnetic
oxidation
fluid
metal particles
particles coated
Prior art date
Application number
EA200000224A
Other languages
English (en)
Other versions
EA001645B1 (ru
Inventor
Катсуто Накатсука
Янг-сам Ким
Тойохиса Фудзита
Такафуми Атараси
Original Assignee
Ниттецу Майнинг Ко., Лтд.
Катсуто Накатсука
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 Ниттецу Майнинг Ко., Лтд., Катсуто Накатсука filed Critical Ниттецу Майнинг Ко., Лтд.
Publication of EA200000224A1 publication Critical patent/EA200000224A1/ru
Publication of EA001645B1 publication Critical patent/EA001645B1/ru

Links

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
    • H01F1/12—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 soft-magnetic materials
    • H01F1/14—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 soft-magnetic materials metals or alloys
    • H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/28—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
    • 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
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
    • 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
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Lubricants (AREA)

Abstract

Предоставлены магнитная жидкость и способ ее получения. Магнитная жидкость является отличной жидкостью, которая мощно и точно активируется под действием внешнего магнитного поля так, что ее вязкость может значительно возрастать и может легко и точно контролироваться с помощью регулировки воздействующего на нее внешнего магнитного поля. Магнитная жидкость также уникальна в смысле невосприимчивости к окислению и дисперсионной способности частиц и имеет достаточно широкий диапазон вязкости. Магнитная жидкость включает покрытые предотвращающей окисление пленкой, частицы металла, диспергированные в растворителе, в котором поддерживаются условия дисперсии, и способ получения жидкости включает образование пленки оксида на поверхности исходных частиц оксида частиц магнитного металла, восстановление исходных частиц оксида, покрытых пленкой оксида, для получения частиц магнитного металла, покрытых предотвращающей окисление пленкой, и устойчивую дисперсию в растворителе частиц магнитного металла, покрытых предотвращающей окисление пленкой.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200000224A 1997-09-16 1998-09-11 Магнитная жидкость и способ ее получения EA001645B1 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP25071397A JP3746884B2 (ja) 1997-09-16 1997-09-16 磁性流体及びその製造方法
PCT/JP1998/004122 WO1999014767A1 (fr) 1997-09-16 1998-09-11 Fluide magnetique et procede de production correspondant

Publications (2)

Publication Number Publication Date
EA200000224A1 true EA200000224A1 (ru) 2000-10-30
EA001645B1 EA001645B1 (ru) 2001-06-25

Family

ID=17211951

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200000224A EA001645B1 (ru) 1997-09-16 1998-09-11 Магнитная жидкость и способ ее получения

Country Status (13)

Country Link
US (1) US6440322B1 (ru)
EP (1) EP1017067B1 (ru)
JP (1) JP3746884B2 (ru)
KR (1) KR100520697B1 (ru)
CN (1) CN1159735C (ru)
AT (1) ATE320073T1 (ru)
AU (1) AU757338B2 (ru)
CA (1) CA2304229A1 (ru)
DE (1) DE69833770T2 (ru)
EA (1) EA001645B1 (ru)
HK (1) HK1033385A1 (ru)
NO (1) NO20001351L (ru)
WO (1) WO1999014767A1 (ru)

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JP3537023B2 (ja) * 1998-01-23 2004-06-14 Ｎｏｋ株式会社 磁性流体
JP4071401B2 (ja) * 1999-09-07 2008-04-02 財団法人地域地盤環境研究所 廃棄物処分場の遮水構造とその形成方法
ES2304096B1 (es) * 2003-11-26 2009-05-07 Hoeganaes Corporation Suspensiones de composiciones de polvos metalurgicos y articulos y metodos que utilizan dichas composiciones.
CN100424370C (zh) * 2003-11-26 2008-10-08 赫格纳斯公司 冶金粉组合物和制品及其使用方法
US7704604B2 (en) * 2004-09-15 2010-04-27 Air Products And Chemicals, Inc. Silicate coating and method of coating by acoustic excitation
US7163248B2 (en) * 2004-11-08 2007-01-16 Lear Corporation Automotive console with adjustable armrest
US7240941B2 (en) * 2004-11-08 2007-07-10 Lear Corporation Vehicle storage assembly with adjustable door
US20060100764A1 (en) * 2004-11-08 2006-05-11 Adams Robert J Adjustable automotive center console
DE102005057384A1 (de) * 2005-11-30 2007-05-31 Nanogate Ag Silikatumhüllte Teilchen in einer Metallschicht
US8808568B2 (en) * 2008-10-08 2014-08-19 University Of Rochester Magnetorheological materials, method for making, and applications thereof
CN101928626A (zh) * 2009-06-22 2010-12-29 重庆仪表材料研究所 高性能磁流变液
JP2012230958A (ja) * 2011-04-25 2012-11-22 Mitsumi Electric Co Ltd 磁性粒子、高周波用磁性材料及び高周波デバイス
NL2010439C2 (en) * 2013-03-12 2014-09-24 Ioniqa Technologies B V Magnetic fluid.
CN106504845A (zh) * 2016-11-15 2017-03-15 成都创驰汽车底盘系统有限公司 一种磁流变液制作方法
JP6765335B2 (ja) * 2017-03-31 2020-10-07 株式会社栗本鐵工所 磁気粘性流体
KR101808228B1 (ko) * 2017-08-23 2017-12-13 주식회사 씨케이머티리얼즈랩 자성 유체 디스플레이
CA3080871C (en) * 2017-10-31 2024-05-28 F. Hoffmann-La Roche Ag Improved magnetic beads comprising a liquid-glass coating and uses thereof in nucleic acid capture or purification
CN109599240B (zh) * 2018-11-21 2020-09-18 湖南金泓电子科技有限责任公司 一种铁氧体类软磁粉芯及其制备方法
CN111243817A (zh) * 2020-02-17 2020-06-05 河北地质大学 非晶纳米颗粒液态金属磁性流体及其制备方法
CN113066632A (zh) * 2021-03-25 2021-07-02 中国科学院宁波材料技术与工程研究所 一种磁性液态金属粉末及其制备方法和应用

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Publication number Priority date Publication date Assignee Title
GB1436595A (en) * 1973-03-30 1976-05-19 Sherritt Gordon Mines Ltd Process for the production of finely divided cobalt powders
JPS5950722B2 (ja) 1975-12-08 1984-12-10 ティーディーケイ株式会社 キヨウジセイキンゾクアルイハゴウキンリユウシノトクセイレツカボウシホウホウ
JPS5415195A (en) * 1977-07-05 1979-02-03 Shinko Electric Co Ltd Magnetic powder for magnetic linking device
JPS58161709A (ja) 1982-03-20 1983-09-26 Hitachi Maxell Ltd 磁性金属鉄粉の製造法
JPH0269859A (ja) * 1988-09-05 1990-03-08 Matsushita Electric Ind Co Ltd 文章校正支援装置
US5702630A (en) * 1992-07-16 1997-12-30 Nippon Oil Company, Ltd. Fluid having both magnetic and electrorheological characteristics
US5578238A (en) * 1992-10-30 1996-11-26 Lord Corporation Magnetorheological materials utilizing surface-modified particles
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JPH07226316A (ja) * 1994-02-14 1995-08-22 Toyohisa Fujita 磁性エレクトロレオロジー流体及びその製造方法

Also Published As

Publication number Publication date
AU9003098A (en) 1999-04-05
NO20001351L (no) 2000-05-16
CN1159735C (zh) 2004-07-28
AU757338B2 (en) 2003-02-20
EP1017067A4 (en) 2001-05-23
JP3746884B2 (ja) 2006-02-15
EP1017067A1 (en) 2000-07-05
CN1278946A (zh) 2001-01-03
NO20001351D0 (no) 2000-03-15
US6440322B1 (en) 2002-08-27
KR20010024058A (ko) 2001-03-26
ATE320073T1 (de) 2006-03-15
DE69833770D1 (de) 2006-05-04
DE69833770T2 (de) 2006-08-17
EP1017067B1 (en) 2006-03-08
KR100520697B1 (ko) 2005-10-12
WO1999014767A1 (fr) 1999-03-25
CA2304229A1 (en) 1999-03-25
JPH1197230A (ja) 1999-04-09
EA001645B1 (ru) 2001-06-25
HK1033385A1 (en) 2001-08-24

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Legal Events

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ KZ KG MD TJ TM

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): BY

MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): RU