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GB974853A - Improvements in or relating to polycrystalline ferrite bodies - Google Patents

Improvements in or relating to polycrystalline ferrite bodies

Info

Publication number
GB974853A
GB974853A GB31952/63A GB3195263A GB974853A GB 974853 A GB974853 A GB 974853A GB 31952/63 A GB31952/63 A GB 31952/63A GB 3195263 A GB3195263 A GB 3195263A GB 974853 A GB974853 A GB 974853A
Authority
GB
United Kingdom
Prior art keywords
sintering
aug
relating
case
magnetic
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
GB31952/63A
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 GB974853A publication Critical patent/GB974853A/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
    • C04B35/2666—Other ferrites containing nickel, copper or cobalt
    • 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
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
    • 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

974,853. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 13, 1963 [Aug. 16, 1962], No. 31952/63. Heading H1H. A polycrystalline ferrite body having a porosity of less than 1% and a resistivity greater than 100 ohm cm. has the composition: Ni a .Zn b Cu c .Co d .Fe (2-x-y) .(Al, Cr, Mn) y .O z where: The ferrite body may be a magnetomechanical converter element (in which case b=0) or a magnetic recording head (in which case a < 0.5 and d=0). The ferrite is formed by presintering the starting material at a temperature not exceeding 950‹ C., grinding, compressing at 1 ton per square inch and sintering at 1230‹ C. The Specification gives examples of ferrites of different compositions, made by sintering for different times in varying atmospheres, and the magnetic properties of the products.
GB31952/63A 1962-08-16 1963-08-13 Improvements in or relating to polycrystalline ferrite bodies Expired GB974853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL282192 1962-08-16

Publications (1)

Publication Number Publication Date
GB974853A true GB974853A (en) 1964-11-11

Family

ID=19754048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31952/63A Expired GB974853A (en) 1962-08-16 1963-08-13 Improvements in or relating to polycrystalline ferrite bodies

Country Status (11)

Country Link
JP (1) JPS5218395B1 (en)
AT (1) AT252591B (en)
BE (1) BE636191A (en)
CH (1) CH442550A (en)
DE (1) DE1696425B1 (en)
DK (1) DK117085B (en)
ES (1) ES290826A1 (en)
FR (1) FR1367157A (en)
GB (1) GB974853A (en)
NL (2) NL282192A (en)
OA (1) OA00814A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6057649A (en) * 1993-05-11 2000-05-02 U.S. Philips Corporation Illumination unit, electrodeless low-pressure discharge lamp, and coil suitable for use therein
GB2362155A (en) * 2000-05-12 2001-11-14 Murata Manufacturing Co Laminated electronic component

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2165011A5 (en) * 1971-12-14 1973-08-03 Thomson Csf
JPS5386076A (en) * 1976-12-30 1978-07-29 Morinaga & Co Continuous rice cracker rolling apparatus
JP3465649B2 (en) * 1999-11-11 2003-11-10 株式会社村田製作所 Ceramic inductor parts and composite parts
DE102007009740A1 (en) * 2007-02-28 2008-09-04 Siemens Ag Production of a magnetic ceramic material comprises heat treating a mechanical-chemical activated starting material at a specified temperature

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE472170A (en) * 1946-03-27

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6057649A (en) * 1993-05-11 2000-05-02 U.S. Philips Corporation Illumination unit, electrodeless low-pressure discharge lamp, and coil suitable for use therein
GB2362155A (en) * 2000-05-12 2001-11-14 Murata Manufacturing Co Laminated electronic component
GB2362155B (en) * 2000-05-12 2002-09-04 Murata Manufacturing Co Laminated electronic component
US6492733B2 (en) 2000-05-12 2002-12-10 Murata Manufacturing Co., Ltd. Laminated electronic component
CN100520996C (en) * 2000-05-12 2009-07-29 株式会社村田制作所 Laminated electronic assembly

Also Published As

Publication number Publication date
DK117085B (en) 1970-03-16
JPS5218395B1 (en) 1977-05-21
NL282192A (en)
FR1367157A (en) 1964-07-17
NL136207C (en)
CH442550A (en) 1967-08-31
OA00814A (en) 1967-11-15
BE636191A (en) 1964-02-14
AT252591B (en) 1967-02-27
ES290826A1 (en) 1964-02-16
DE1696425B1 (en) 1970-01-15

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