GB988835A - Permanent-magnetic materials and processes for preparing them - Google Patents

Permanent-magnetic materials and processes for preparing them

Info

Publication number
GB988835A
GB988835A GB3011063A GB3011063A GB988835A GB 988835 A GB988835 A GB 988835A GB 3011063 A GB3011063 A GB 3011063A GB 3011063 A GB3011063 A GB 3011063A GB 988835 A GB988835 A GB 988835A
Authority
GB
United Kingdom
Prior art keywords
case
ferrite
dissolved
july
minutes
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
GB3011063A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB988835A publication Critical patent/GB988835A/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)
  • Hard Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

988,835. Magnetic compositions. A. COCHARDT. July 30, 1963 [July 31, 1962], No. 30110/63. Drawings to Specification. Heading H1H. A barium and/or strontium and/or lead ferrite contains additional material which, if the sintering temperature were held for a sufficient time, would dissolve in the ferrite, but which is not fully dissolved. In an example, 84À8% by weight of Fe 2 O 3 containing 0À5% SiO 2 is mixed with 15À2% SrCO 3 containing impurities (mainly SrSO 4 , BaSO 4 , CaO and Al 2 O 3 ) and the part of the mixture sintered for a long time (60 minutes) and part for a short time (3 minutes). In the first case nearly all the additional constituents were dissolved in the ferrite, but in the second case only about 20% were dissolved. The material formed in the second case had higher remanence, coercive force and maximum energy product than that formed in the first case. Specifications 988,834 and 988,836 are referred to.
GB3011063A 1962-07-31 1963-07-30 Permanent-magnetic materials and processes for preparing them Expired GB988835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0027597 1962-07-31

Publications (1)

Publication Number Publication Date
GB988835A true GB988835A (en) 1965-04-14

Family

ID=7018403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3011063A Expired GB988835A (en) 1962-07-31 1963-07-30 Permanent-magnetic materials and processes for preparing them

Country Status (2)

Country Link
DE (1) DE1471047B1 (en)
GB (1) GB988835A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU30876A1 (en) * 1950-09-19

Also Published As

Publication number Publication date
DE1471047B1 (en) 1969-11-06

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