GB2001950A - Manganese-zinc ferrites - Google Patents
Manganese-zinc ferritesInfo
- Publication number
- GB2001950A GB2001950A GB7832307A GB7832307A GB2001950A GB 2001950 A GB2001950 A GB 2001950A GB 7832307 A GB7832307 A GB 7832307A GB 7832307 A GB7832307 A GB 7832307A GB 2001950 A GB2001950 A GB 2001950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coo
- mol
- weight
- small amount
- temperature coefficient
- 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.)
- Granted
Links
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 title 1
- 229910000859 α-Fe Inorganic materials 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000035699 permeability Effects 0.000 abstract 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 abstract 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
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
- C04B35/265—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
Abstract
A high or medium-permeability, low loss, calcium containing manganese-zinc ferrite with a given initial permeability temperature coefficient that is constant and positive or only fluctuates by a small amount around zero over a wide temperature range, has the following basic composition:- 49 to 55 mol % Fe2O3 0.2 to 5 mol % (SnO2 and/or TiO2> remainder to 100 mol % MnO and ZnO combined with 0.03 to 0.4% by weight of CaO and a very small amount of CoO, in particular 0.02 to 0.5% by weight of CoO, the amount of CoO being chosen to match the theoretical Fe<2+>-content level, which is controlled by the proportion of Sn, Ti and extra- stoichiometric iron present, in such a way that the desired temperature coefficient of the initial permeability mu i is obtained.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2735440A DE2735440C3 (en) | 1977-08-05 | 1977-08-05 | Manganese zinc ferrite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2001950A true GB2001950A (en) | 1979-02-14 |
| GB2001950B GB2001950B (en) | 1982-02-10 |
Family
ID=6015760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7832307A Expired GB2001950B (en) | 1977-08-05 | 1978-08-04 | Magnetic-zinc ferrites |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2735440C3 (en) |
| FR (1) | FR2399393A1 (en) |
| GB (1) | GB2001950B (en) |
| IT (1) | IT1097665B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0182406A1 (en) * | 1984-10-30 | 1986-05-28 | Koninklijke Philips Electronics N.V. | Titanium-containing and cobalt-containing manganese-zinc ferrite core and method of manufacturing same |
| EP0986074A2 (en) * | 1998-09-07 | 2000-03-15 | Kureha Kagaku Kogyo Kabushiki Kaisha | Resinous magnetic composition and manufacturing process |
| US6440323B1 (en) * | 1999-11-19 | 2002-08-27 | Minebea Co., Ltd. | Mn-Zn ferrite and production process thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL135865C (en) | 1963-07-26 | |||
| DE1671035C2 (en) | 1966-07-01 | 1975-02-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Ferromagnetically highly permeable manganese-zinc-ferrite core with great temporal and thermal constancy of the initial permeability and process for its production |
| DE2165009B2 (en) | 1971-12-28 | 1975-12-04 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Process for the production of a manganese-zinc ferrite |
-
1977
- 1977-08-05 DE DE2735440A patent/DE2735440C3/en not_active Expired
-
1978
- 1978-07-27 FR FR7822251A patent/FR2399393A1/en active Granted
- 1978-08-04 IT IT26493/78A patent/IT1097665B/en active
- 1978-08-04 GB GB7832307A patent/GB2001950B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0182406A1 (en) * | 1984-10-30 | 1986-05-28 | Koninklijke Philips Electronics N.V. | Titanium-containing and cobalt-containing manganese-zinc ferrite core and method of manufacturing same |
| EP0986074A2 (en) * | 1998-09-07 | 2000-03-15 | Kureha Kagaku Kogyo Kabushiki Kaisha | Resinous magnetic composition and manufacturing process |
| EP0986074A3 (en) * | 1998-09-07 | 2000-08-23 | Kureha Kagaku Kogyo Kabushiki Kaisha | Resinous magnetic composition and manufacturing process |
| US6342557B1 (en) | 1998-09-07 | 2002-01-29 | Kureha Kagaku Kogyo K.K. | Resin composition and molded or formed product |
| US6440323B1 (en) * | 1999-11-19 | 2002-08-27 | Minebea Co., Ltd. | Mn-Zn ferrite and production process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2001950B (en) | 1982-02-10 |
| DE2735440A1 (en) | 1979-02-08 |
| IT1097665B (en) | 1985-08-31 |
| FR2399393A1 (en) | 1979-03-02 |
| IT7826493A0 (en) | 1978-08-04 |
| DE2735440B2 (en) | 1981-04-02 |
| FR2399393B1 (en) | 1983-11-18 |
| DE2735440C3 (en) | 1982-04-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |