GB1304237A - - Google Patents

Info

Publication number
GB1304237A
GB1304237A GB1304237DA GB1304237A GB 1304237 A GB1304237 A GB 1304237A GB 1304237D A GB1304237D A GB 1304237DA GB 1304237 A GB1304237 A GB 1304237A
Authority
GB
United Kingdom
Prior art keywords
temperature
ats
cores
sintering
partial
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
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 filed Critical
Publication of GB1304237A publication Critical patent/GB1304237A/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

1304237 Ferrite cores PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 Sept 1970 42043/70 Heading H1H Magnetic ferrite cores have the composition: The cores may be made by sintering at 1150- 1400‹ C., e.g. for 30-60 minutes, a compressed, optionally pre-fired mixture of oxides and/or oxide-forming compounds. The partial pressure of oxygen during sintering and cooling down to 1000‹ C., is related to the core temperature such that where T=temperature in ‹ K., P=partial O 2 pressure and C 1 and C 2 are constants such that when PO 2 = 0À001 ats., the temperature is >1040‹ C.; at 1350‹ C. PO 2 is <0À06 ats.; while during cooling from 1000‹ C. to room temperature, PO 2 <0À0003 ats. The products have low disaccommodation values over a wide temperature range.
GB1304237D 1970-09-02 1970-09-02 Expired GB1304237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4204370 1970-09-02

Publications (1)

Publication Number Publication Date
GB1304237A true GB1304237A (en) 1973-01-24

Family

ID=10422576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1304237D Expired GB1304237A (en) 1970-09-02 1970-09-02

Country Status (11)

Country Link
JP (1) JPS5631730B1 (en)
AU (1) AU456153B2 (en)
BE (1) BE772036A (en)
BR (1) BR7105722D0 (en)
CA (1) CA974366A (en)
DE (1) DE2143439A1 (en)
ES (1) ES394684A1 (en)
FR (1) FR2102053A5 (en)
GB (1) GB1304237A (en)
NL (1) NL173686C (en)
SE (1) SE378322B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0980856A1 (en) * 1998-08-19 2000-02-23 Minebea Co., Ltd. A Mn-Zn Ferrite
EP1136460A1 (en) * 2000-03-22 2001-09-26 Minebea Co., Ltd. Mn-Zn Ferrite and production process thereof
US6468441B1 (en) 2000-03-15 2002-10-22 Minebea Co., Ltd. Mn-Zn ferrite and production process thereof
US6547984B2 (en) 2000-02-08 2003-04-15 Minebea Co., Ltd. Mn-Zn ferrite and production process thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642852C2 (en) * 1976-09-23 1985-07-18 Siemens AG, 1000 Berlin und 8000 München Process for the production of a high and medium permeability Mn-Zn-Sn-Ti ferroferrite for a wide temperature and frequency range
JPS5812346A (en) * 1981-07-15 1983-01-24 Nec Corp Semiconductor integrated circuit
NL8403282A (en) * 1984-10-30 1986-05-16 Philips Nv TITANIC AND COBALT-CONTAINING MANGANESE-ZINC FERRITE CORE AND METHOD OF MANUFACTURING THE SAME

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0980856A1 (en) * 1998-08-19 2000-02-23 Minebea Co., Ltd. A Mn-Zn Ferrite
US6210598B1 (en) 1998-08-19 2001-04-03 Minebea Co., Ltd. Mn-Zn ferrite
US6547984B2 (en) 2000-02-08 2003-04-15 Minebea Co., Ltd. Mn-Zn ferrite and production process thereof
US6468441B1 (en) 2000-03-15 2002-10-22 Minebea Co., Ltd. Mn-Zn ferrite and production process thereof
EP1136460A1 (en) * 2000-03-22 2001-09-26 Minebea Co., Ltd. Mn-Zn Ferrite and production process thereof
US6461531B2 (en) 2000-03-22 2002-10-08 Minebea Co., Ltd. Mn-Zn ferrite and production process thereof

Also Published As

Publication number Publication date
AU3292671A (en) 1973-03-08
DE2143439A1 (en) 1972-03-09
NL7111884A (en) 1972-03-06
NL173686C (en) 1984-02-16
JPS5631730B1 (en) 1981-07-23
ES394684A1 (en) 1974-02-16
AU456153B2 (en) 1974-12-12
BR7105722D0 (en) 1973-04-17
NL173686B (en) 1983-09-16
SE378322B (en) 1975-08-25
BE772036A (en) 1972-02-29
FR2102053A5 (en) 1972-03-31
CA974366A (en) 1975-09-16

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Legal Events

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