IL39014A - Ferromagnetic acicular cobalt particles their preparation and use - Google Patents

Ferromagnetic acicular cobalt particles their preparation and use

Info

Publication number
IL39014A
IL39014A IL39014A IL3901472A IL39014A IL 39014 A IL39014 A IL 39014A IL 39014 A IL39014 A IL 39014A IL 3901472 A IL3901472 A IL 3901472A IL 39014 A IL39014 A IL 39014A
Authority
IL
Israel
Prior art keywords
particles
preparing
oxalate
organic
metal
Prior art date
Application number
IL39014A
Other languages
English (en)
Other versions
IL39014A0 (en
Original Assignee
Graham Magnetics Inc
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 Graham Magnetics Inc filed Critical Graham Magnetics Inc
Publication of IL39014A0 publication Critical patent/IL39014A0/xx
Publication of IL39014A publication Critical patent/IL39014A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • C07C51/418—Preparation of metal complexes containing carboxylic acid moieties
    • 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
    • B22F1/16—Metallic particles coated with a non-metal
    • 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
    • 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
    • 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
    • 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
    • G11B5/714—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 dimension of the magnetic particles
    • 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
    • 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
    • H01F1/065—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 obtained by a reduction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Power Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Paints Or Removers (AREA)
  • Hard Magnetic Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Magnetic Record Carriers (AREA)
  • Powder Metallurgy (AREA)
IL39014A 1971-03-24 1972-03-17 Ferromagnetic acicular cobalt particles their preparation and use IL39014A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12751471A 1971-03-24 1971-03-24
US228387A US3892673A (en) 1971-03-24 1972-02-22 Composition of metal salt crystals having a polymeric coating

Publications (2)

Publication Number Publication Date
IL39014A0 IL39014A0 (en) 1972-05-30
IL39014A true IL39014A (en) 1976-10-31

Family

ID=26825704

Family Applications (1)

Application Number Title Priority Date Filing Date
IL39014A IL39014A (en) 1971-03-24 1972-03-17 Ferromagnetic acicular cobalt particles their preparation and use

Country Status (15)

Country Link
US (1) US3892673A (de)
JP (1) JPS5245660B1 (de)
AT (1) AT331052B (de)
BE (1) BE781111A (de)
CA (1) CA972190A (de)
CH (1) CH566396A5 (de)
DE (1) DE2213131A1 (de)
ES (1) ES401098A1 (de)
FR (1) FR2130609B1 (de)
GB (1) GB1382724A (de)
IE (1) IE36220B1 (de)
IL (1) IL39014A (de)
IT (1) IT954521B (de)
NL (1) NL7203970A (de)
SE (1) SE388962B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909240A (en) * 1973-09-28 1975-09-30 Graham Magnetics Inc Method of producing acicular metal crystals
DE2535277C2 (de) * 1975-08-07 1984-10-18 Basf Ag, 6700 Ludwigshafen Verwendung von Alkylenoxiden zur Stabilisierung pyrophorer Metallpulverteilchen
NO155316C (no) * 1982-04-23 1987-03-11 Sintef Fremgangsmaate for fremstilling av magnetiske polymerpartikler.
WO1984002031A1 (en) * 1982-11-10 1984-05-24 Sintef Magnetic polymer particles and process for the preparation thereof
JP4072994B2 (ja) * 2001-10-11 2008-04-09 学校法人日本大学 磁性粒子
CN101781186A (zh) * 2009-01-21 2010-07-21 尤米科尔公司 草酸钴粉末及其用于制造具有优良冷压和烧结性质的Co粉末的用途

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2216770A (en) * 1937-02-11 1940-10-08 Glidden Co Method of making metal powders and product
US2621137A (en) * 1948-07-13 1952-12-09 Charles Hardy Inc Reducing metal powders
US2791561A (en) * 1950-04-27 1957-05-07 Gen Aniline & Film Corp Magnetic powders and method of making the same
US3228882A (en) * 1963-01-04 1966-01-11 Chevron Res Dispersions of ferromagnetic cobalt particles
US3228881A (en) * 1963-01-04 1966-01-11 Chevron Res Dispersions of discrete particles of ferromagnetic metals
US3574685A (en) * 1969-01-14 1971-04-13 Ibm Manufacture of magnetic particles by reacting iron,cobalt,or nickel salts with oxalic acid salts in dialkyl sulfoxide

Also Published As

Publication number Publication date
NL7203970A (de) 1972-09-26
BE781111A (fr) 1972-09-25
CH566396A5 (de) 1975-09-15
AT331052B (de) 1976-08-10
IE36220B1 (en) 1976-09-15
US3892673A (en) 1975-07-01
IE36220L (en) 1972-09-24
FR2130609A1 (de) 1972-11-03
JPS5245660B1 (de) 1977-11-17
IL39014A0 (en) 1972-05-30
GB1382724A (en) 1975-02-05
SE388962B (sv) 1976-10-18
IT954521B (it) 1973-09-15
ES401098A1 (es) 1975-07-16
DE2213131A1 (de) 1972-09-28
ATA243672A (de) 1975-10-15
CA972190A (en) 1975-08-05
FR2130609B1 (de) 1978-09-01

Similar Documents

Publication Publication Date Title
US4425250A (en) Preparation of finely divided ferrite powders
DE3724156A1 (de) Verfahren zum herstellen von metallischen oder keramischen hohlkugeln
EP0106577B2 (de) Pulver für magnetische Aufzeichnungsmedien und ein Verfahren für seine Erzeugung
CA1176830A (en) Process for producing ferromagnetic metallic particles
US3994346A (en) Investment shell mold, for use in casting of reacting and refractory metals
US3855016A (en) Acicular cobalt powders having high squarenesss ratios
US3766642A (en) Process for preparing a ductile metal ferrite
EP0615231B1 (de) Verfahren zur Herstellung von magnetischen metallischen Teilchen
US3925114A (en) Process for preparation of magnetic alloy powder
US3892673A (en) Composition of metal salt crystals having a polymeric coating
JP3449104B2 (ja) 脱酸素剤及びその製造方法
EP0328534B1 (de) Verfahren zur herstellung von magnetischen hexaferritteilchen, dadurch erhaltene teilchen und diese erhaltene produkte
GB2026998A (en) Process for preparing magnetic powder
EP0231128B1 (de) Plättchenförmige Bariumferritteilchen und Verfahren zu ihrer Herstellung
JPS5919964B2 (ja) 強磁性金属粉末の製造方法
JPS59213664A (ja) セラミツクス前駆体フイルムおよびその製造法
US20070108255A1 (en) Process for the pressureless sintering of metal alloys; and application to the manufacture of hollow spheres
JP3374189B2 (ja) 脱酸素材料及びその製造方法
US2936286A (en) Production of acicular iron particles
SU1180250A1 (ru) Шихта дл приготовлени металлической св зки
JPH0332884B2 (de)
JPS62222425A (ja) 磁気記録媒体
US4137287A (en) Method of preparing beta alkaline alumina parts
JPH03130371A (ja) ニッケル薄膜形成方法
JPS6188505A (ja) 強磁性鉄粉の製造方法