ES394684A1 - A method of manufacturing a magnetic nucleus. (Machine-translation by Google Translate, not legally binding) - Google Patents
A method of manufacturing a magnetic nucleus. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES394684A1 ES394684A1 ES394684A ES394684A ES394684A1 ES 394684 A1 ES394684 A1 ES 394684A1 ES 394684 A ES394684 A ES 394684A ES 394684 A ES394684 A ES 394684A ES 394684 A1 ES394684 A1 ES 394684A1
- Authority
- ES
- Spain
- Prior art keywords
- moles
- temperature
- atm
- translation
- manufacturing
- 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
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
A method of manufacturing a magnetic core of material based on manganese-zinc-ferrous ferrite, which contains tin and optionally titanium in the crystal lattice, and which has a composition comprised within the range defined by the following limit values of percentages in moles of metal oxides: 24 - 40% in moles of MnO, 5 - 24% in moles of ZnO, 41 - 48.5% in moles of Fe2O3, 3-7% in moles of FeO, 1 - 4% in moles of SnO2, and 0 - 5 mol% of TiO2, characterized in that a comprised mixture, which may have been previously calcined of the ferrite-forming metal oxides, is sintered at a temperature of 1150ºC to 1400ºC, where, during sintering and the subsequent cooling of the core to 1000ºC, the partial pressure of oxygen, PO2, expressed in atmospheres, in the gas mixture in which sintering and cooling takes place, is related to the core temperature in such a way that the co Ndition: ** (See formula) ** where T is the temperature in degrees Kelvin, and C1 and C2 are constants that have values such that when PO2 is 0.001 atm the temperature is greater than 1040ºC, and that at a temperature of 1350ºC PO2 is greater than 0.06 atm, while during cooling from 1000ºC to ambient temperature PO2 is less than 0.0003 atm. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4204370 | 1970-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES394684A1 true ES394684A1 (en) | 1974-02-16 |
Family
ID=10422576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES394684A Expired ES394684A1 (en) | 1970-09-02 | 1971-08-31 | A method of manufacturing a magnetic nucleus. (Machine-translation by Google Translate, not legally binding) |
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) |
Families Citing this family (7)
| 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 |
| JP3108803B2 (en) * | 1998-08-19 | 2000-11-13 | ミネベア株式会社 | Mn-Zn ferrite |
| JP3584439B2 (en) | 2000-02-08 | 2004-11-04 | ミネベア株式会社 | Mn-Zn ferrite and method for producing the same |
| JP3418827B2 (en) | 2000-03-15 | 2003-06-23 | ミネベア株式会社 | Mn-Zn ferrite and method for producing the same |
| JP3446082B2 (en) * | 2000-03-22 | 2003-09-16 | ミネベア株式会社 | Mn-Zn ferrite and method for producing the same |
-
1970
- 1970-09-02 GB GB1304237D patent/GB1304237A/en not_active Expired
-
1971
- 1971-08-28 NL NL7111884A patent/NL173686C/en not_active IP Right Cessation
- 1971-08-30 CA CA121,643A patent/CA974366A/en not_active Expired
- 1971-08-30 SE SE1096071A patent/SE378322B/xx unknown
- 1971-08-31 FR FR7131472A patent/FR2102053A5/fr not_active Expired
- 1971-08-31 BR BR572271A patent/BR7105722D0/en unknown
- 1971-08-31 DE DE19712143439 patent/DE2143439A1/en not_active Ceased
- 1971-08-31 JP JP6639271A patent/JPS5631730B1/ja active Pending
- 1971-08-31 AU AU32926/71A patent/AU456153B2/en not_active Expired
- 1971-08-31 ES ES394684A patent/ES394684A1/en not_active Expired
- 1971-08-31 BE BE772036A patent/BE772036A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7105722D0 (en) | 1973-04-17 |
| NL173686C (en) | 1984-02-16 |
| CA974366A (en) | 1975-09-16 |
| AU3292671A (en) | 1973-03-08 |
| BE772036A (en) | 1972-02-29 |
| FR2102053A5 (en) | 1972-03-31 |
| AU456153B2 (en) | 1974-12-12 |
| DE2143439A1 (en) | 1972-03-09 |
| GB1304237A (en) | 1973-01-24 |
| SE378322B (en) | 1975-08-25 |
| JPS5631730B1 (en) | 1981-07-23 |
| NL7111884A (en) | 1972-03-06 |
| NL173686B (en) | 1983-09-16 |
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