KR830002684B1 - 자기 기록용 금속 철입자의 제조방법 - Google Patents

자기 기록용 금속 철입자의 제조방법 Download PDF

Info

Publication number
KR830002684B1
KR830002684B1 KR1019800003019A KR800003019A KR830002684B1 KR 830002684 B1 KR830002684 B1 KR 830002684B1 KR 1019800003019 A KR1019800003019 A KR 1019800003019A KR 800003019 A KR800003019 A KR 800003019A KR 830002684 B1 KR830002684 B1 KR 830002684B1
Authority
KR
South Korea
Prior art keywords
iron oxide
antimony
weight
coated
reduction
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
KR1019800003019A
Other languages
English (en)
Korean (ko)
Other versions
KR830003787A (ko
Inventor
제임스 디지크스 루이스
허만 로드리안 리챠드
Original Assignee
화이자 인코포레이티드
테렌스 제이. 겔라거
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 화이자 인코포레이티드, 테렌스 제이. 겔라거 filed Critical 화이자 인코포레이티드
Publication of KR830003787A publication Critical patent/KR830003787A/ko
Application granted granted Critical
Publication of KR830002684B1 publication Critical patent/KR830002684B1/ko
Expired 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)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
KR1019800003019A 1979-07-30 1980-07-29 자기 기록용 금속 철입자의 제조방법 Expired KR830002684B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61797 1979-07-30
US06/061,797 US4256484A (en) 1979-07-30 1979-07-30 Metallic iron particles for magnetic recording

Publications (2)

Publication Number Publication Date
KR830003787A KR830003787A (ko) 1983-06-22
KR830002684B1 true KR830002684B1 (ko) 1983-12-07

Family

ID=22038209

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019800003019A Expired KR830002684B1 (ko) 1979-07-30 1980-07-29 자기 기록용 금속 철입자의 제조방법

Country Status (22)

Country Link
US (1) US4256484A (cg-RX-API-DMAC10.html)
JP (1) JPS5623203A (cg-RX-API-DMAC10.html)
KR (1) KR830002684B1 (cg-RX-API-DMAC10.html)
AU (1) AU522889B2 (cg-RX-API-DMAC10.html)
BE (1) BE884529A (cg-RX-API-DMAC10.html)
BR (1) BR8004772A (cg-RX-API-DMAC10.html)
CA (1) CA1132008A (cg-RX-API-DMAC10.html)
CH (1) CH639014A5 (cg-RX-API-DMAC10.html)
DD (1) DD153195A5 (cg-RX-API-DMAC10.html)
DE (1) DE3028556C2 (cg-RX-API-DMAC10.html)
ES (1) ES493819A0 (cg-RX-API-DMAC10.html)
FI (1) FI70339C (cg-RX-API-DMAC10.html)
FR (1) FR2462222A1 (cg-RX-API-DMAC10.html)
IL (1) IL60693A (cg-RX-API-DMAC10.html)
IN (1) IN154408B (cg-RX-API-DMAC10.html)
IT (1) IT1132024B (cg-RX-API-DMAC10.html)
MX (1) MX152979A (cg-RX-API-DMAC10.html)
NL (1) NL8004337A (cg-RX-API-DMAC10.html)
PH (1) PH15943A (cg-RX-API-DMAC10.html)
PT (1) PT71622A (cg-RX-API-DMAC10.html)
SE (1) SE454548B (cg-RX-API-DMAC10.html)
SU (1) SU1419510A3 (cg-RX-API-DMAC10.html)

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
EP0237944B1 (de) * 1986-03-14 1993-01-07 BASF Aktiengesellschaft Verfahren zur Herstellung von nadelförmigem alpha-Eisen-III-Oxid
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 (cg-RX-API-DMAC10.html) * 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 (cg-RX-API-DMAC10.html) * 1974-09-17 1976-03-23 Fuji Photo Film Co Ltd
JPS5142990A (cg-RX-API-DMAC10.html) * 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
MX152979A (es) 1986-07-11
FI70339C (fi) 1986-09-12
SU1419510A3 (ru) 1988-08-23
ES8106267A1 (es) 1981-08-01
DE3028556C2 (de) 1986-04-17
AU6087080A (en) 1981-06-18
FR2462222B1 (cg-RX-API-DMAC10.html) 1984-01-06
NL8004337A (nl) 1981-02-03
IT8023788A0 (it) 1980-07-29
BE884529A (fr) 1981-01-29
JPH0146561B2 (cg-RX-API-DMAC10.html) 1989-10-09
US4256484A (en) 1981-03-17
JPS5623203A (en) 1981-03-05
DE3028556A1 (de) 1981-02-12
AU522889B2 (en) 1982-07-01
FI802370A7 (fi) 1981-01-31
CA1132008A (en) 1982-09-21
FI70339B (fi) 1986-02-28
IT1132024B (it) 1986-06-25
PH15943A (en) 1983-04-29
FR2462222A1 (fr) 1981-02-13
SE454548B (sv) 1988-05-09
SE8004264L (sv) 1981-01-31
IN154408B (cg-RX-API-DMAC10.html) 1984-10-27
CH639014A5 (fr) 1983-10-31
DD153195A5 (de) 1981-12-30
PT71622A (en) 1980-08-01
IL60693A (en) 1983-02-23
BR8004772A (pt) 1981-02-10
ES493819A0 (es) 1981-08-01
KR830003787A (ko) 1983-06-22

Similar Documents

Publication Publication Date Title
US4384892A (en) Production of magnetic powder
US4447264A (en) Production of magnetic powder
KR880001711B1 (ko) 자성분말의 제조방법
KR830002684B1 (ko) 자기 기록용 금속 철입자의 제조방법
JPH0145202B2 (cg-RX-API-DMAC10.html)
EP0041257B1 (en) Process for preparing ferromagnetic particles comprising metallic iron
US4305752A (en) Metallic iron particles for magnetic recording
KR890001971B1 (ko) 코발트함유 자성산화철 분말의 제조방법
GB1559145A (en) Acicular ferromagnetic metal particles and method for preparation of the same
US3910785A (en) Method of preparing a metal powder mainly consisting of iron
JPH04503938A (ja) 磁性ヘキサフェライト粒子の製造方法、得られた粒子及びそれを含む製品
JP3446961B2 (ja) α−オキシ水酸化鉄を用いた磁気記録用磁性金属粉末の製造方法
GB2061321A (en) Metallic iron particles for magnetic recording
JPS61163120A (ja) 等軸磁性酸化鉄顔料の製造方法
US4497654A (en) Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders
JPH032321B2 (cg-RX-API-DMAC10.html)
JP3446960B2 (ja) α−オキシ水酸化鉄を用いた磁気記録用磁性金属粉末の製造方法
JPS6090828A (ja) 針状スピネルフエライト粉体の製造法
JPS63143204A (ja) 磁性鉄粉の製造方法
JPS6320769B2 (cg-RX-API-DMAC10.html)
JPH0425687B2 (cg-RX-API-DMAC10.html)
JPH0430162B2 (cg-RX-API-DMAC10.html)
JPH0459613A (ja) 炭化鉄微粒子の製造法
JPS63183111A (ja) 強磁性金属微粒子の製造法
JPH0425686B2 (cg-RX-API-DMAC10.html)

Legal Events

Date Code Title Description
PA0109 Patent application

St.27 status event code: A-0-1-A10-A12-nap-PA0109

PE0902 Notice of grounds for rejection

St.27 status event code: A-1-2-D10-D21-exm-PE0902

PG1501 Laying open of application

St.27 status event code: A-1-1-Q10-Q12-nap-PG1501

T11-X000 Administrative time limit extension requested

St.27 status event code: U-3-3-T10-T11-oth-X000

P11-X000 Amendment of application requested

St.27 status event code: A-2-2-P10-P11-nap-X000

P13-X000 Application amended

St.27 status event code: A-2-2-P10-P13-nap-X000

PG1605 Publication of application before grant of patent

St.27 status event code: A-2-2-Q10-Q13-nap-PG1605

PE0701 Decision of registration

St.27 status event code: A-1-2-D10-D22-exm-PE0701

PR0701 Registration of establishment

St.27 status event code: A-2-4-F10-F11-exm-PR0701

PR1002 Payment of registration fee

St.27 status event code: A-2-2-U10-U11-oth-PR1002

Fee payment year number: 1

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 4

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 7

Fee payment year number: 6

Fee payment year number: 5

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 8

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

Fee payment year number: 9

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

PR1001 Payment of annual fee

St.27 status event code: A-4-4-U10-U11-oth-PR1001

PC1903 Unpaid annual fee

St.27 status event code: A-4-4-U10-U13-oth-PC1903

Not in force date: 19921208

Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

PC1903 Unpaid annual fee

St.27 status event code: N-4-6-H10-H13-oth-PC1903

Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE

Not in force date: 19921208

PN2301 Change of applicant

St.27 status event code: A-5-5-R10-R13-asn-PN2301

St.27 status event code: A-5-5-R10-R11-asn-PN2301

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000

R18-X000 Changes to party contact information recorded

St.27 status event code: A-5-5-R10-R18-oth-X000