JPS57126103A - Cohesive magnetic iron particle - Google Patents

Cohesive magnetic iron particle

Info

Publication number
JPS57126103A
JPS57126103A JP56201023A JP20102381A JPS57126103A JP S57126103 A JPS57126103 A JP S57126103A JP 56201023 A JP56201023 A JP 56201023A JP 20102381 A JP20102381 A JP 20102381A JP S57126103 A JPS57126103 A JP S57126103A
Authority
JP
Japan
Prior art keywords
magnetic iron
iron particle
cohesive magnetic
cohesive
particle
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.)
Pending
Application number
JP56201023A
Other languages
English (en)
Inventor
Rademahaasu Yakopu
Nauman Rorufu
Piiaman Hansuupeetaa
Bukusubaumu Guntaa
Ramuboruto Buorufugangu
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of JPS57126103A publication Critical patent/JPS57126103A/ja
Pending legal-status Critical Current

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
    • H01F1/032—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
    • H01F1/06—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 in the form of particles, e.g. powder
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70605—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys
    • G11B5/70621—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material metals or alloys containing Co metal or alloys
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/148—Agglomerating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • 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
    • H01F1/06—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 in the form of particles, e.g. powder
    • H01F1/061—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 in the form of particles, e.g. powder with a protective layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Compounds Of Iron (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Magnetic Record Carriers (AREA)
JP56201023A 1980-12-19 1981-12-15 Cohesive magnetic iron particle Pending JPS57126103A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803048086 DE3048086A1 (de) 1980-12-19 1980-12-19 Agglomerierte ferromagnetische eisenteilchen

Publications (1)

Publication Number Publication Date
JPS57126103A true JPS57126103A (en) 1982-08-05

Family

ID=6119721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56201023A Pending JPS57126103A (en) 1980-12-19 1981-12-15 Cohesive magnetic iron particle

Country Status (7)

Country Link
US (1) US4470844A (ja)
EP (1) EP0054818B1 (ja)
JP (1) JPS57126103A (ja)
KR (1) KR880002127B1 (ja)
BR (1) BR8108270A (ja)
CA (1) CA1168430A (ja)
DE (2) DE3048086A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203224A (ja) * 1983-05-02 1984-11-17 Fuji Photo Film Co Ltd 磁気記録媒体

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3330767A1 (de) * 1983-08-26 1985-03-14 Bayer Ag, 5090 Leverkusen Handhabungsstabile im wesentlichen aus eisen bestehende magnetpigmente, verfahren zu ihrer herstellung sowie ihre verwendung
JPH0611008B2 (ja) * 1983-11-16 1994-02-09 株式会社東芝 圧粉鉄心
GB8529418D0 (en) * 1985-11-29 1986-01-08 Allied Colloids Ltd Iron ore pelletisation
US4728537A (en) * 1985-11-29 1988-03-01 Allied Colloids Limited Ore pelletization
NL8601635A (nl) * 1986-06-27 1988-01-18 Vmei Lenin Nis Hittebestendig amorf ferromagnetisch poeder alsmede een werkwijze en inrichting voor de bereiding ervan.
JPS63199801A (ja) * 1987-02-12 1988-08-18 Chisso Corp 強磁性金属粉末の安定化処理装置
US4743466A (en) * 1987-06-05 1988-05-10 Eastman Kodak Company Corrosion inhibition of iron and its alloys
JPH0620008B2 (ja) * 1987-08-24 1994-03-16 チッソ株式会社 酸化皮膜を有する強磁性金属粉末の製造方法
DE69717718T2 (de) * 1996-05-28 2003-11-13 Hitachi Powdered Metals Co., Ltd. Weichmagnetischer Pulververbund-Kern aus Teilchen mit isolierenden Schichten
US6720094B2 (en) 2000-06-13 2004-04-13 Toda Kogyo Corporation Secondary agglomerates of magnetic metal particles for magnetic recording and process for producing the same
US6589667B1 (en) * 2000-09-26 2003-07-08 Höganäs Ab Spherical porous iron powder and method for producing the same
US6783608B2 (en) * 2001-04-27 2004-08-31 Toda Kogyo Corporation Secondary agglomerates of magnetic metal particles for magnetic recording and process for producing the same
JP5544928B2 (ja) * 2010-02-26 2014-07-09 セイコーエプソン株式会社 造粒粉末および造粒粉末の製造方法
US20110217555A1 (en) * 2010-03-03 2011-09-08 Seiko Epson Corporation Granulated powder and method for producing granulated powder
JP5544945B2 (ja) * 2010-03-11 2014-07-09 セイコーエプソン株式会社 造粒粉末および造粒粉末の製造方法
DE102019207824A1 (de) * 2019-05-28 2020-12-03 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung von Eisenpulver

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5120593A (ja) * 1974-08-13 1976-02-18 Matsushita Electric Ind Co Ltd

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857201A (en) * 1931-07-02 1932-05-10 Bell Telephone Labor Inc Process for insulating magnetic bodies
DE2524517B2 (de) * 1975-06-03 1979-01-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur Stabilisierung pyrophorer Eisenpulver
JPS5424000A (en) * 1977-07-22 1979-02-22 Fuji Photo Film Co Ltd High density magnetograph substance
DE2743298A1 (de) * 1977-09-27 1979-04-05 Basf Ag Ferromagnetische, im wesentlichen aus eisen bestehende metallteilchen und verfahren zu deren herstellung
JPS5813008B2 (ja) * 1977-10-06 1983-03-11 日本ビクター株式会社 磁性鉄粉の製造方法
JPS54121269A (en) * 1978-03-14 1979-09-20 Tdk Corp Manufacture of ferromagnetic metal powder
US4305752A (en) * 1979-07-30 1981-12-15 Pfizer Inc. Metallic iron particles for magnetic recording
JPS579802A (en) * 1980-06-20 1982-01-19 Dainippon Ink & Chem Inc Metallic magnetic powder and its manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5120593A (ja) * 1974-08-13 1976-02-18 Matsushita Electric Ind Co Ltd

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59203224A (ja) * 1983-05-02 1984-11-17 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0479046B2 (ja) * 1983-05-02 1992-12-14 Fuji Photo Film Co Ltd

Also Published As

Publication number Publication date
DE3048086A1 (de) 1982-07-15
EP0054818A1 (de) 1982-06-30
KR880002127B1 (ko) 1988-10-15
DE3163927D1 (en) 1984-07-05
BR8108270A (pt) 1982-10-05
EP0054818B1 (de) 1984-05-30
US4470844A (en) 1984-09-11
KR830007189A (ko) 1983-10-14
CA1168430A (en) 1984-06-05

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