FR1397228A - Procédé de préparation de particules magnétiques - Google Patents

Procédé de préparation de particules magnétiques

Info

Publication number
FR1397228A
FR1397228A FR960672A FR960672A FR1397228A FR 1397228 A FR1397228 A FR 1397228A FR 960672 A FR960672 A FR 960672A FR 960672 A FR960672 A FR 960672A FR 1397228 A FR1397228 A FR 1397228A
Authority
FR
France
Prior art keywords
magnetic particles
preparing magnetic
preparing
particles
magnetic
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.)
Expired
Application number
FR960672A
Other languages
English (en)
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Application granted granted Critical
Publication of FR1397228A publication Critical patent/FR1397228A/fr
Expired 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
    • H01F1/12—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
    • 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
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
    • 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
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
    • 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
    • C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
    • 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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dispersion Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
FR960672A 1963-01-21 1964-01-17 Procédé de préparation de particules magnétiques Expired FR1397228A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US252610A US3186829A (en) 1963-01-21 1963-01-21 Process of preparing magnetic particles

Publications (1)

Publication Number Publication Date
FR1397228A true FR1397228A (fr) 1965-04-30

Family

ID=22956753

Family Applications (1)

Application Number Title Priority Date Filing Date
FR960672A Expired FR1397228A (fr) 1963-01-21 1964-01-17 Procédé de préparation de particules magnétiques

Country Status (6)

Country Link
US (1) US3186829A (fr)
BE (1) BE642776A (fr)
DE (1) DE1217073B (fr)
FR (1) FR1397228A (fr)
GB (1) GB1007901A (fr)
NL (1) NL6400382A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376107A (en) * 1963-10-10 1968-04-02 Oka Akira Stoichiometric transition metal hydrides
US3767464A (en) * 1968-11-13 1973-10-23 Fuji Photo Film Co Ltd Magnetic recording member and method of producing same
US4594230A (en) * 1985-02-04 1986-06-10 Gte Products Corporation Recovery of cobalt
CA3101795C (fr) 2018-05-30 2023-10-10 Hela Novel Metals Llc Procedes de production de poudres metalliques fines a partir de composes metalliques

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR999197A (fr) * 1952-01-25
GB419953A (en) * 1933-05-22 1934-11-22 Telegraph Constr & Maintenance Manufacture of nickel iron alloys
US2636892A (en) * 1948-04-23 1953-04-28 Int Standard Electric Corp Production of metal oxalates
DE873539C (de) * 1950-05-22 1953-04-16 Electro Chimie Soc D Verfahren zur Herstellung von Metallpulvern, insbesondere von Eisenpulvern

Also Published As

Publication number Publication date
DE1217073B (de) 1966-05-18
GB1007901A (en) 1965-10-22
BE642776A (fr)
NL6400382A (fr) 1964-07-22
US3186829A (en) 1965-06-01

Similar Documents

Publication Publication Date Title
FR1436182A (fr) Procédé de préparation de particules densifiées de nitrocellulose
CH433313A (fr) Procédé de préparation de benzoxazépines
FR1346126A (fr) Procédé de préparation de quinacridones
FR1397228A (fr) Procédé de préparation de particules magnétiques
CH435298A (fr) Procédé de préparation de 3-acylamino-5-pyrazolones
FR1403372A (fr) Procédé de préparation de 5-aminopyrazols substitués
FR1392872A (fr) Procédé de préparation des phtaloylpyrrocolines
FR1359343A (fr) Procédé de préparation du beta-ionylidène-acétaldéhyde
FR1384309A (fr) Procédé de préparation de benzène-sulfonyl-urées
FR1361270A (fr) Procédé de préparation de n-vinylimides
FR1380579A (fr) Procédé de préparation de fluoro-alcanols
FR1354508A (fr) Procédé de préparation de 3-alcoyl-phénols
FR1357970A (fr) Procédé de préparation de polyhalophénates
FR1403545A (fr) Procédé de préparation de 4-amino-3-nitro-azobenzènes
FR1396616A (fr) Procédé perfectionné de préparation de diaminomonoazotriazines
FR1378405A (fr) Procédé de préparation de 3-alcoyl-phénols
FR1381644A (fr) Procédé de préparation de 19-nor-stéroïdes
FR84404E (fr) Procédé de préparation de quinacridones linéaires
FR1536154A (fr) Procédé de préparation du glutamate de dexamphétamine
FR1358762A (fr) Procédé de préparation du nitrocyclopropane
FR1409078A (fr) Procédé de préparation du s-octahydroanthracène
FR1371142A (fr) Procédé de préparation de carbodiimides
FR1348944A (fr) Procédé de préparation de cyclodécanol-6-one-1
FR83098E (fr) Procédé de préparation de bêta-diols bitertiaires
FR1458077A (fr) Procédé de préparation de diaza-cyclo-alcanes