GB1320939A - Manganese-zinc ferrites - Google Patents

Manganese-zinc ferrites

Info

Publication number
GB1320939A
GB1320939A GB4646970A GB4646970A GB1320939A GB 1320939 A GB1320939 A GB 1320939A GB 4646970 A GB4646970 A GB 4646970A GB 4646970 A GB4646970 A GB 4646970A GB 1320939 A GB1320939 A GB 1320939A
Authority
GB
United Kingdom
Prior art keywords
per cent
mol
ferrite
sintered
vol
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
GB4646970A
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.)
Siemens AG
Original Assignee
Siemens AG
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 claimed from DE19691949599 external-priority patent/DE1949599C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1320939A publication Critical patent/GB1320939A/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
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites

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)
  • Soft Magnetic Materials (AREA)

Abstract

1320939 Ferrites SIEMENS AG 30 Sept 1970 [1 Oct 1969] 46469/70 Heading H1H A manganeze-zinc ferrite is made from an initial composition of 51À25Œ0À5 mol. per cent Fe 2 O 3 ; 23À25Œ1 mol. per cent ZnO; 1Œ0À1 mol. per cent TiO 2 ; sufficient CaO or CaCO 3 to produce 0À05-0À2 wt. per cent CaO in the final ferrite, the remainder being MnO. The Ca compound(s) may be added to a pre-sintered (1050‹ C.) mixture of the other constituents while grinding. The ground mixture may then be compacted, sintered at 1250-1320‹ C. for 2-5 hours in a gas containing up to 5 vol. per cent O 2 , and then cooled over 3-10 hours in a shielding gas such that the gas contains at most 0À05 vol. per cent O 2 . When the temperature is below 1000‹ C. the ferrite has a low instability factor, and a substantially constant temperature coefficient of initial permeability α/Á between -40‹ C. and +100‹ C.
GB4646970A 1969-10-01 1970-09-30 Manganese-zinc ferrites Expired GB1320939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691949599 DE1949599C3 (en) 1969-10-01 Ferrimagnetic, highly permeable manganese-zinc ferrite core and process for its production

Publications (1)

Publication Number Publication Date
GB1320939A true GB1320939A (en) 1973-06-20

Family

ID=5747082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4646970A Expired GB1320939A (en) 1969-10-01 1970-09-30 Manganese-zinc ferrites

Country Status (5)

Country Link
BE (1) BE756936A (en)
FR (1) FR2068273A5 (en)
GB (1) GB1320939A (en)
LU (1) LU61793A1 (en)
NL (1) NL7011587A (en)

Also Published As

Publication number Publication date
BE756936A (en) 1971-04-01
DE1949599A1 (en) 1971-04-08
LU61793A1 (en) 1971-01-21
FR2068273A5 (en) 1971-08-20
DE1949599B2 (en) 1975-12-04
NL7011587A (en) 1971-04-05

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee