GB1003533A - - Google Patents

Info

Publication number
GB1003533A
GB1003533A GB25072/64A GB2507264A GB1003533A GB 1003533 A GB1003533 A GB 1003533A GB 25072/64 A GB25072/64 A GB 25072/64A GB 2507264 A GB2507264 A GB 2507264A GB 1003533 A GB1003533 A GB 1003533A
Authority
GB
United Kingdom
Prior art keywords
temperature
mol
minutes
per cent
june
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
GB25072/64A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1003533A publication Critical patent/GB1003533A/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
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2616—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing lithium
    • 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

Landscapes

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

Abstract

1,003,533. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 17, 1964 [June 20, 1963], No. 25072/64. Heading H1H. A method of manufacturing a " square loop " magnetic core comprises the steps of forming a mixture of 14 to 15 mol. per cent of Li 2 O, 6 to 7 mol. per cent of NiO and 77 to 81 mol. per cent of Fe 2 0 3 , or compounds yielding these oxides, presintering at a temperature between 600‹ and 750‹ C., regrinding the product and compressing it into shape, heating a temperature between 1370‹ and 1400‹ C. within a period of not more than 16 minutes, maintaining this temperature for 5 to 10 minutes, cooling to a temperature of between 940‹ and 960‹ C. within a period between 70 to 90 minutes, and quenched in air. A grinding liquid (ethanol) and an organic binder may be used. The cores may be rings with outside diameter between 2.8 and 4 mm. inside diameter more than 0.6 times the inside diameter, and height of 1 to 2 mm. Specification 959,643 is referred to.
GB25072/64A 1963-06-20 1964-06-17 Expired GB1003533A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL294371 1963-06-20

Publications (1)

Publication Number Publication Date
GB1003533A true GB1003533A (en) 1965-09-02

Family

ID=19754802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25072/64A Expired GB1003533A (en) 1963-06-20 1964-06-17

Country Status (11)

Country Link
US (1) US3376227A (en)
AT (1) AT247036B (en)
BE (1) BE649467A (en)
CH (1) CH455957A (en)
DE (1) DE1471347A1 (en)
DK (1) DK116805B (en)
ES (1) ES301174A1 (en)
FR (1) FR1399248A (en)
GB (1) GB1003533A (en)
NL (1) NL294371A (en)
OA (1) OA00766A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528517B1 (en) * 1966-12-28 1977-03-09
US3860524A (en) * 1969-12-29 1975-01-14 Spang Ind Inc High permeability manganese-zinc ferrites

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038860A (en) * 1956-12-20 1962-06-12 Francis E Vinal Lithium nickel ferrites
NL273242A (en) * 1962-01-05

Also Published As

Publication number Publication date
DK116805B (en) 1970-02-16
ES301174A1 (en) 1962-12-16
FR1399248A (en) 1965-05-14
NL294371A (en)
DE1471347A1 (en) 1969-02-27
US3376227A (en) 1968-04-02
CH455957A (en) 1968-05-15
OA00766A (en) 1967-11-15
BE649467A (en)
AT247036B (en) 1966-05-25

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