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GB994240A - Improvements in or relating to methods of manufacturing magnetic cores and magnetic cores manufactured by such methods - Google Patents

Improvements in or relating to methods of manufacturing magnetic cores and magnetic cores manufactured by such methods

Info

Publication number
GB994240A
GB994240A GB20383/63A GB2038363A GB994240A GB 994240 A GB994240 A GB 994240A GB 20383/63 A GB20383/63 A GB 20383/63A GB 2038363 A GB2038363 A GB 2038363A GB 994240 A GB994240 A GB 994240A
Authority
GB
United Kingdom
Prior art keywords
mol
methods
magnetic cores
temperature
relating
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
GB20383/63A
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 GB994240A publication Critical patent/GB994240A/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
    • 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
    • C04B35/2625—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 magnesium

Landscapes

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

Abstract

994,240. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 22, 1963 [May 25, 1962], No. 20383/63. Heading H1H. A ferromagnetic ferrite core having a square hysteresis loop and consisting in a sintered body formed from the following constituents: 2À5 to 16À4 % mol. of Li 2 O; 0À3 to 68 % mol. of MnO; 32 to 82 % mol. of Fe 2 O 3 ; 0 to 14 % mol. of NiO, is produced by grinding the oxides or oxide-yielding compounds, presintering at a temperature below 800‹ C. regrinding, adding an organic binder, pressing into shape under 1À5 tons/cm.<SP>2</SP>, and sintering at between 1200‹ and 1400‹ C. in a moisture-free atmosphere of air or oxygen-enriched air. Cooling may take place quickly or slowly to a temperature 100-600‹ C. lower than the sintering temperature. The body may be held at this temperature and then quenched. Various examples with their heating schedules are disclosed.
GB20383/63A 1962-05-25 1963-05-22 Improvements in or relating to methods of manufacturing magnetic cores and magnetic cores manufactured by such methods Expired GB994240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL278942 1962-05-25

Publications (1)

Publication Number Publication Date
GB994240A true GB994240A (en) 1965-06-02

Family

ID=19753850

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20383/63A Expired GB994240A (en) 1962-05-25 1963-05-22 Improvements in or relating to methods of manufacturing magnetic cores and magnetic cores manufactured by such methods

Country Status (11)

Country Link
US (1) US3372123A (en)
AT (1) AT241138B (en)
BE (1) BE632810A (en)
CH (1) CH428013A (en)
DE (1) DE1471340B2 (en)
DK (1) DK116144B (en)
ES (1) ES288241A1 (en)
FR (1) FR1358754A (en)
GB (1) GB994240A (en)
NL (2) NL135253C (en)
OA (1) OA00820A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663360A (en) * 1951-05-03 1953-12-22 Englander Co Inc Seat
DE1671022B1 (en) * 1966-03-17 1971-05-19 Siemens Ag USE OF LITHIUM FERRITE

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS528517B1 (en) * 1966-12-28 1977-03-09
US3477960A (en) * 1967-08-23 1969-11-11 Ampex Preparation of lithium-manganese ferrite
JPS5427560B1 (en) * 1971-03-10 1979-09-11
US6210293B1 (en) 1993-06-01 2001-04-03 Spalding Sports Worldwide, Inc. Multi-layer golf ball

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82272C (en) * 1953-12-21 1956-08-15
US3038860A (en) * 1956-12-20 1962-06-12 Francis E Vinal Lithium nickel ferrites
US3034987A (en) * 1957-12-31 1962-05-15 Rca Corp Magnetic cores
NL257266A (en) * 1959-11-10
US3065182A (en) * 1959-11-17 1962-11-20 Ibm Low flux density ferromagnetic material
US3093588A (en) * 1960-04-04 1963-06-11 Ampex Lithium ferrites
US3039962A (en) * 1961-01-30 1962-06-19 Rca Corp Ferromagnetic ferrite and process of preparing same
NL273242A (en) * 1962-01-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663360A (en) * 1951-05-03 1953-12-22 Englander Co Inc Seat
DE1671022B1 (en) * 1966-03-17 1971-05-19 Siemens Ag USE OF LITHIUM FERRITE

Also Published As

Publication number Publication date
NL135253C (en) 1972-05-15
DE1471340A1 (en) 1970-02-05
FR1358754A (en) 1964-04-17
BE632810A (en) 1963-11-25
OA00820A (en) 1967-11-15
NL278942A (en)
ES288241A1 (en) 1963-12-01
DK116144B (en) 1969-12-15
DE1471340B2 (en) 1971-07-01
US3372123A (en) 1968-03-05
CH428013A (en) 1967-01-15
AT241138B (en) 1965-07-12

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