GB992859A - Permanent magnet ferrite - Google Patents

Permanent magnet ferrite

Info

Publication number
GB992859A
GB992859A GB1902062A GB1902062A GB992859A GB 992859 A GB992859 A GB 992859A GB 1902062 A GB1902062 A GB 1902062A GB 1902062 A GB1902062 A GB 1902062A GB 992859 A GB992859 A GB 992859A
Authority
GB
United Kingdom
Prior art keywords
ferrite
manganite
strontium
barium
permanent magnet
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
GB1902062A
Inventor
Godshalk Berge
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.)
THOMAS H MINER AND ASSOCIATES
Original Assignee
THOMAS H MINER AND ASSOCIATES
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 THOMAS H MINER AND ASSOCIATES filed Critical THOMAS H MINER AND ASSOCIATES
Priority to GB1902062A priority Critical patent/GB992859A/en
Publication of GB992859A publication Critical patent/GB992859A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2683—Other ferrites containing alkaline earth metals or lead

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)

Abstract

992,859. Magnetic compositions. THOMAS H. MINER & ASSOCIATES Inc. May 17, 1962, No. 19020/62. Heading H1H. A permanent magnet material comprises a sintered mixture of barium and/or strontium ferrite with barium and/or strontium manganite having the formula x(ZO.yFe 2 O 3 ).ZMnO 3 where Z is Ba, Sr or a combination of both, x is from 3 to 14 and y is from 5 to 7. The ferrite and manganite are made in separate sintering processes. The ferrite is formed by mixing barium (or strontium) carbonate with ferric oxide, drying, and sintering between 1900‹ F. and 2300‹ F. for 4 to 6 hours. A similar process is used to form the manganite. A mixture of 94%-98% ferrite with 6%-2% manganite by weight is mixed, ground to a size less than 5 Á, mixed with a consumable binder, moulded under 2000-20,000 p.s.i., or extruded and sintered in an oxidizing atmosphere between 1600‹ F. and 2700‹ F. for ¢ to 6 hours. The formed body is magnetized.
GB1902062A 1962-05-17 1962-05-17 Permanent magnet ferrite Expired GB992859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1902062A GB992859A (en) 1962-05-17 1962-05-17 Permanent magnet ferrite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1902062A GB992859A (en) 1962-05-17 1962-05-17 Permanent magnet ferrite

Publications (1)

Publication Number Publication Date
GB992859A true GB992859A (en) 1965-05-26

Family

ID=10122429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1902062A Expired GB992859A (en) 1962-05-17 1962-05-17 Permanent magnet ferrite

Country Status (1)

Country Link
GB (1) GB992859A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115196957A (en) * 2022-08-22 2022-10-18 上海宝钢磁业有限公司 Permanent magnetic ferrite and preparation method and application thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115196957A (en) * 2022-08-22 2022-10-18 上海宝钢磁业有限公司 Permanent magnetic ferrite and preparation method and application thereof

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