[go: up one dir, main page]

ES8106267A1 - Mejoras introducidas en un procedimiento de preparacion de un polvo magneticamente estable - Google Patents

Mejoras introducidas en un procedimiento de preparacion de un polvo magneticamente estable

Info

Publication number
ES8106267A1
ES8106267A1 ES493819A ES493819A ES8106267A1 ES 8106267 A1 ES8106267 A1 ES 8106267A1 ES 493819 A ES493819 A ES 493819A ES 493819 A ES493819 A ES 493819A ES 8106267 A1 ES8106267 A1 ES 8106267A1
Authority
ES
Spain
Prior art keywords
magnetic recording
metallic iron
iron particles
proportion
per
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
ES493819A
Other languages
English (en)
Other versions
ES493819A0 (es
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.)
Pfizer Corp Belgium
Pfizer Corp SRL
Original Assignee
Pfizer Corp Belgium
Pfizer Corp SRL
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 Pfizer Corp Belgium, Pfizer Corp SRL filed Critical Pfizer Corp Belgium
Publication of ES8106267A1 publication Critical patent/ES8106267A1/es
Publication of ES493819A0 publication Critical patent/ES493819A0/es
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C225/00—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones
    • C07C225/02—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C225/04—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being saturated
    • C07C225/06—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being saturated and acyclic
    • 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
    • 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
    • B22F1/18—Non-metallic particles coated with metal
    • 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
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PROCEDIMIENTO PARA LA PREPARACION DE UN POLVO DE HIERRO MAGNETICAMENTE ESTABLE. UN PRECURSOR DE OXIDO DE HIERRO SE RECUBRE CON UN COMPUESTO DE ANTIMONIO EN PROPORCION DEL 7 POR 100 EN PESO Y SE PRECIPITAN SOBRE EL MISMO HIDROXIDOS U OXIHIDROXIDOS DE ESTAÑO EN PROPORCION DEL 0,5 AL 8 POR 100 EN PESO. EL PRECURSOR DE OXIDO DE HIERRO ASI TRATADO SE SOMETE A REACCION DE REDUCCION EN PRESENCIA DE HIDROGENO A UNA TEMPERATURA DE UNOS 350 GC Y EL POLVO METALICO ASI OBTENIDO SE ESTABILIZA PARA SU UTILIZACION. DE APLICACION PARA FINES DE REGISTRO MAGNETICO. A
ES493819A 1979-07-30 1980-07-29 Mejoras introducidas en un procedimiento de preparacion de un polvo magneticamente estable Granted ES493819A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/061,797 US4256484A (en) 1979-07-30 1979-07-30 Metallic iron particles for magnetic recording

Publications (2)

Publication Number Publication Date
ES8106267A1 true ES8106267A1 (es) 1981-08-01
ES493819A0 ES493819A0 (es) 1981-08-01

Family

ID=22038209

Family Applications (1)

Application Number Title Priority Date Filing Date
ES493819A Granted ES493819A0 (es) 1979-07-30 1980-07-29 Mejoras introducidas en un procedimiento de preparacion de un polvo magneticamente estable

Country Status (22)

Country Link
US (1) US4256484A (es)
JP (1) JPS5623203A (es)
KR (1) KR830002684B1 (es)
AU (1) AU522889B2 (es)
BE (1) BE884529A (es)
BR (1) BR8004772A (es)
CA (1) CA1132008A (es)
CH (1) CH639014A5 (es)
DD (1) DD153195A5 (es)
DE (1) DE3028556C2 (es)
ES (1) ES493819A0 (es)
FI (1) FI70339C (es)
FR (1) FR2462222A1 (es)
IL (1) IL60693A (es)
IN (1) IN154408B (es)
IT (1) IT1132024B (es)
MX (1) MX152979A (es)
NL (1) NL8004337A (es)
PH (1) PH15943A (es)
PT (1) PT71622A (es)
SE (1) SE454548B (es)
SU (1) SU1419510A3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2815712A1 (de) * 1978-04-12 1979-10-25 Bayer Ag Eisenoxide zur magnetischen signalaufzeichnung und verfahren zu deren herstellung
JPS5677931A (en) * 1979-11-28 1981-06-26 Tdk Corp Magnetic recording medium and its producton
JPH0832563B2 (ja) * 1986-03-14 1996-03-29 バスフ アクチェン ゲゼルシャフト 針状α−Ｆｅ▲下２▼Ｏ▲下３▼の製造方法
US5219554A (en) 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
JPS63302420A (ja) * 1987-01-16 1988-12-09 Nissan Chem Ind Ltd 磁性鉄粉の製造法
KR100870992B1 (ko) 2007-04-04 2008-12-01 나노케미칼 주식회사 열전지 열원용 영가철 분말 제조방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215996A (fr) * 1957-12-16 1960-04-21 Thomson Houston Comp Francaise Matériaux magnétiques agglomérés et leur fabrication
JPS5528129B1 (es) * 1967-08-10 1980-07-25
NL162233C (nl) * 1968-03-05 1980-04-15 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel poeder, voor magnetische registratie.
NL163355C (nl) * 1969-04-08 1980-08-15 Philips Nv Werkwijze ter bereiding van een in hoofdzaak uit ijzer bestaand magnetisch stabiel metaalpoeder, voor magnetische registratie.
US3623859A (en) * 1970-05-22 1971-11-30 Ampex Process of making acicular stable magnetic iron particles
US3663318A (en) * 1970-10-05 1972-05-16 Du Pont Process for making ferromagnetic metal powders
DE2212933A1 (de) * 1972-03-17 1973-09-20 Philips Nv Verfahren zur herstellung eines im wesentlichen aus eisen bestehenden metallpulvers
US4067755A (en) * 1974-06-25 1978-01-10 Tdk Electronics Company, Ltd. Method of making powdered magnetic iron oxide material
JPS5133758A (es) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
JPS5142990A (es) * 1974-10-11 1976-04-12 Fuji Photo Film Co Ltd
IT1026663B (it) * 1974-11-29 1978-10-20 Montedison Spa Procedimento per preparare polve ri metalliche a base di ferro per registrzione hagnetica
US4020236A (en) * 1975-07-22 1977-04-26 Fuji Photo Film Co., Ltd. Process for producing a magnetic material and magnetic recording medium containing the same
DE2909995C2 (de) * 1978-03-16 1984-06-28 Kanto Denka Kogyo Co., Ltd., Tokyo Verfahren zur Herstellung eines Magnetpulvers

Also Published As

Publication number Publication date
IN154408B (es) 1984-10-27
FI802370A7 (fi) 1981-01-31
DE3028556C2 (de) 1986-04-17
BE884529A (fr) 1981-01-29
AU522889B2 (en) 1982-07-01
IL60693A (en) 1983-02-23
KR830002684B1 (ko) 1983-12-07
SU1419510A3 (ru) 1988-08-23
SE454548B (sv) 1988-05-09
JPS5623203A (en) 1981-03-05
CA1132008A (en) 1982-09-21
SE8004264L (sv) 1981-01-31
DE3028556A1 (de) 1981-02-12
PH15943A (en) 1983-04-29
CH639014A5 (fr) 1983-10-31
PT71622A (en) 1980-08-01
MX152979A (es) 1986-07-11
FR2462222B1 (es) 1984-01-06
BR8004772A (pt) 1981-02-10
FI70339C (fi) 1986-09-12
IT8023788A0 (it) 1980-07-29
FI70339B (fi) 1986-02-28
ES493819A0 (es) 1981-08-01
NL8004337A (nl) 1981-02-03
KR830003787A (ko) 1983-06-22
IT1132024B (it) 1986-06-25
US4256484A (en) 1981-03-17
JPH0146561B2 (es) 1989-10-09
FR2462222A1 (fr) 1981-02-13
DD153195A5 (de) 1981-12-30
AU6087080A (en) 1981-06-18

Similar Documents

Publication Publication Date Title
KR840003667A (ko) 열 안정성 산화철 안료 및 이의 제조방법
EP0361349A3 (en) Magnetic fine particles of epsilon' iron carbide
ES8106267A1 (es) Mejoras introducidas en un procedimiento de preparacion de un polvo magneticamente estable
JPS55154321A (en) Manufacture of magnetic oxide particle
GB1496890A (en) Manufacture of magnetic materials which exhibit exchange anisotropy
GB683722A (en) Ferromagnetic materials
US3547823A (en) Tellurium-tin modified chromium dioxide
JPS5370397A (en) Strongly magnetic metallic powder, preparation of same and magneticrecording media emplying same
US3583917A (en) Tellurium-lead modified chromium dioxide
JPS5584041A (en) Magnetic recording medium
JPS5536221A (en) Underwater antifouling coating material
JPS5475597A (en) Preparation of metal podwer for magnetic recording
GB817458A (en) Preparation of ferrites of high initial permeability and products obtained
JPS5556605A (en) Magnetic recording medium
SU634380A1 (ru) Ферритовый материал
JPS5525854A (en) Magnetic recording medium
SU63858A1 (ru) Способ получени ферромагнитного порошка дл магнитной записи колебаний
JPS56127984A (en) Hub piece of tape cassette
JPS5517834A (en) Magnetic recording media
JPS5249500A (en) Mnbi alloy magnetic material with excellent oxidation stability
GB815676A (en) Improvements in or relating to ferromagnetic ferrite materials
GB940251A (en) Friction discs
JPS53147799A (en) Curable composition
GB1436135A (en) Colbat and zinc ferrites and magnetic recording tape thereof
JPS5710675A (en) Heat-storing material composition