ES259448A1 - Magnetic materials and applications - Google Patents
Magnetic materials and applicationsInfo
- Publication number
- ES259448A1 ES259448A1 ES0259448A ES259448A ES259448A1 ES 259448 A1 ES259448 A1 ES 259448A1 ES 0259448 A ES0259448 A ES 0259448A ES 259448 A ES259448 A ES 259448A ES 259448 A1 ES259448 A1 ES 259448A1
- Authority
- ES
- Spain
- Prior art keywords
- mixture
- hours
- pure nitrogen
- oxide
- temperature
- 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)
- Soft Magnetic Materials (AREA)
- Compounds Of Iron (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
Improvements introduced in the manufacture of ferromagnetic materials with very low losses at high frequency, with a coefficient of variation of permeability with positive and constant temperature between -60ºC and + 100ºC, manufactured by compression of a homogeneous mixture of powder of metallic oxides, at a pressure of 1 to 15 tons/cm2, subjecting the nuclei obtained to a heat treatment consisting of heating at a temperature of 1150º to 1280ºC in pure nitrogen containing from 2 to 10% by volume oxygen for a period of approximately 4 hours, followed by slow cooling for 15 hours, the latter taking place in pure nitrogen, said mixture being composed of ferric oxide, manganese oxide and zinc oxide, the final compositions of which comply with the formula: mFe2 O3, xMno, yFeO, qZnO, where the molecular percentages m, x, y, q satisfy the following relationships: m + x + y + q = 100 50% <m <52% 24% <x <28% 2% <and <6% and to which less than 1% by weight of calcium is added to the mixture before grinding, preferably 0.1%. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR801070A FR1241760A (en) | 1959-07-24 | 1959-07-24 | Magnetic materials and applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES259448A1 true ES259448A1 (en) | 1961-03-01 |
Family
ID=8717550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0259448A Expired ES259448A1 (en) | 1959-07-24 | 1960-07-06 | Magnetic materials and applications |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE593336A (en) |
| CH (1) | CH404003A (en) |
| ES (1) | ES259448A1 (en) |
| FR (1) | FR1241760A (en) |
| GB (1) | GB919176A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620701B (en) * | 2021-09-29 | 2023-04-18 | 海安南京大学高新技术研究院 | Preparation method of superfine-crystal high-temperature-resistant high-frequency manganese-zinc ferrite |
-
1959
- 1959-07-24 FR FR801070A patent/FR1241760A/en not_active Expired
-
1960
- 1960-07-06 ES ES0259448A patent/ES259448A1/en not_active Expired
- 1960-07-22 GB GB2562660A patent/GB919176A/en not_active Expired
- 1960-07-25 CH CH847960A patent/CH404003A/en unknown
- 1960-07-25 BE BE593336A patent/BE593336A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB919176A (en) | 1963-02-20 |
| BE593336A (en) | 1961-01-25 |
| CH404003A (en) | 1965-12-15 |
| FR1241760A (en) | 1960-09-23 |
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