GB1263382A - Improvements in permanent magnet material powders having superior magnetic characteristics and method for their production - Google Patents

Improvements in permanent magnet material powders having superior magnetic characteristics and method for their production

Info

Publication number
GB1263382A
GB1263382A GB22515/69A GB2251569A GB1263382A GB 1263382 A GB1263382 A GB 1263382A GB 22515/69 A GB22515/69 A GB 22515/69A GB 2251569 A GB2251569 A GB 2251569A GB 1263382 A GB1263382 A GB 1263382A
Authority
GB
United Kingdom
Prior art keywords
compound
production
permanent magnet
magnetic characteristics
magnet material
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
GB22515/69A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1263382A publication Critical patent/GB1263382A/en
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
    • H01F1/032—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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • 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
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • 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
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0552—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes with a protective layer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

1,263,382. Magnetic materials. GENERAL ELECTRIC CO. 2 May, 1969 [20 May, 1968], No. 22515/69. Heading H1H. [Also in Divisions C1 and C7] Powdered cobalt-rare earth metal compound, made by reducing in size a bulk body of the compound is contacted with nitric, hydrochloric, sulphuric, phosphoric or acetic acid for a time sufficient to increase the coercive force of the compound. Specified compounds are Co 5 Y, Co 5 Sm and Co 5 M where M is Ce-rich misch metal. Examples describe the treatment of the above compounds, after grinding to particle sizes of < 30 microns to 147 microns, with 1%, 2% and 20% HNO 3 ; 20% HCl; 20% H 3 PO 4 ; 20% H 2 SO 4 and 20% CH 3 COOH (per cent by vol.) for 10 seconds to 90 minutes at about 25‹ C.
GB22515/69A 1968-05-20 1969-05-02 Improvements in permanent magnet material powders having superior magnetic characteristics and method for their production Expired GB1263382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73057768A 1968-05-20 1968-05-20

Publications (1)

Publication Number Publication Date
GB1263382A true GB1263382A (en) 1972-02-09

Family

ID=24935903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22515/69A Expired GB1263382A (en) 1968-05-20 1969-05-02 Improvements in permanent magnet material powders having superior magnetic characteristics and method for their production

Country Status (7)

Country Link
US (1) US3558371A (en)
BE (1) BE733308A (en)
DE (1) DE1925269C3 (en)
ES (1) ES367179A1 (en)
FR (1) FR2008948A1 (en)
GB (1) GB1263382A (en)
NL (1) NL6907474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035633A1 (en) * 1980-03-10 1981-09-16 International Business Machines Corporation Method of coating magnetic particles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3905841A (en) * 1973-08-30 1975-09-16 Ibm Method of improving dispersability of small metallic magnetic particles in organic resin binders
US4310349A (en) * 1979-02-02 1982-01-12 Ampex Corporation Highly orientable iron particles
US4316738A (en) * 1979-02-02 1982-02-23 Ampex Corporation Economical process for producing metal particles for magnetic recording
JPS5810454B2 (en) * 1980-02-07 1983-02-25 住友特殊金属株式会社 permanent magnet alloy
US4668283A (en) * 1984-06-25 1987-05-26 Mitsui Toatsu Chemicals, Incorporated Magnetic powder and production process thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035633A1 (en) * 1980-03-10 1981-09-16 International Business Machines Corporation Method of coating magnetic particles

Also Published As

Publication number Publication date
US3558371A (en) 1971-01-26
DE1925269C3 (en) 1981-02-19
BE733308A (en) 1969-11-03
DE1925269A1 (en) 1969-11-27
ES367179A1 (en) 1971-04-01
NL6907474A (en) 1969-11-24
DE1925269B2 (en) 1978-07-13
FR2008948A1 (en) 1970-01-30

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