GB726264A - Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets - Google Patents

Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets

Info

Publication number
GB726264A
GB726264A GB1302352A GB1302352A GB726264A GB 726264 A GB726264 A GB 726264A GB 1302352 A GB1302352 A GB 1302352A GB 1302352 A GB1302352 A GB 1302352A GB 726264 A GB726264 A GB 726264A
Authority
GB
United Kingdom
Prior art keywords
oxide
iron
heating
alkali metal
carbonate
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
GB1302352A
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.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
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
Priority to NLAANVRAGE7711818,B priority Critical patent/NL178480B/xx
Priority to NL85333D priority patent/NL85333C/xx
Application filed by General Electric Company PLC filed Critical General Electric Company PLC
Priority to GB1302352A priority patent/GB726264A/en
Priority to FR1076496D priority patent/FR1076496A/fr
Priority to DES33461A priority patent/DE1031771B/de
Publication of GB726264A publication Critical patent/GB726264A/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
    • H01F1/12—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
    • 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)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
GB1302352A 1952-05-22 1952-05-22 Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets Expired GB726264A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NLAANVRAGE7711818,B NL178480B (nl) 1952-05-22 Boorband, in het bijzonder voor tapijten of viltachtige banen.
NL85333D NL85333C (enExample) 1952-05-22
GB1302352A GB726264A (en) 1952-05-22 1952-05-22 Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets
FR1076496D FR1076496A (fr) 1952-05-22 1953-04-27 Procédé de fabrication de poudres de fer magnétisables et aimants obtenus à partir de ces poudres
DES33461A DE1031771B (de) 1952-05-22 1953-05-18 Verfahren zur Gewinnung von im wesentlichen aus metallischen Eisenteilchen bestehenden Eisenpulvern, die zur Herstellung permanenter Magnete geeignet sind

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1302352A GB726264A (en) 1952-05-22 1952-05-22 Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets

Publications (1)

Publication Number Publication Date
GB726264A true GB726264A (en) 1955-03-16

Family

ID=10015397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1302352A Expired GB726264A (en) 1952-05-22 1952-05-22 Improvements in or relating to the preparation of ferrous powders suitable for the manufacture of permanent magnets

Country Status (4)

Country Link
DE (1) DE1031771B (enExample)
FR (1) FR1076496A (enExample)
GB (1) GB726264A (enExample)
NL (2) NL178480B (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879154A (en) * 1956-10-02 1959-03-24 Franklin Inst Of The State Of Acicular metal particles and method of making the same
US11607734B2 (en) 2018-05-30 2023-03-21 Hela Novel Metals Llc Methods for the production of fine metal powders from metal compounds
CN117658645A (zh) * 2022-08-26 2024-03-08 横店集团东磁股份有限公司 一种永磁铁氧体用高硅铁红中硅杂质的去除方法及使用高硅铁红制备永磁铁氧体的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935394A (en) * 1956-04-16 1960-05-03 Commw Engineering Corp Method and apparatus for producing micron and sub-micron metals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879154A (en) * 1956-10-02 1959-03-24 Franklin Inst Of The State Of Acicular metal particles and method of making the same
US11607734B2 (en) 2018-05-30 2023-03-21 Hela Novel Metals Llc Methods for the production of fine metal powders from metal compounds
CN117658645A (zh) * 2022-08-26 2024-03-08 横店集团东磁股份有限公司 一种永磁铁氧体用高硅铁红中硅杂质的去除方法及使用高硅铁红制备永磁铁氧体的方法

Also Published As

Publication number Publication date
FR1076496A (fr) 1954-10-27
NL178480B (nl)
DE1031771B (de) 1958-06-12
NL85333C (enExample)

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