GB1071611A - Process for producting ferrites - Google Patents
Process for producting ferritesInfo
- Publication number
- GB1071611A GB1071611A GB2476164A GB2476164A GB1071611A GB 1071611 A GB1071611 A GB 1071611A GB 2476164 A GB2476164 A GB 2476164A GB 2476164 A GB2476164 A GB 2476164A GB 1071611 A GB1071611 A GB 1071611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrite
- ferrites
- stage
- sintering
- takes place
- 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
- 229910000859 α-Fe Inorganic materials 0.000 title abstract 10
- 238000005245 sintering Methods 0.000 abstract 4
- 239000012298 atmosphere Substances 0.000 abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 1
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 abstract 1
- 229910017518 Cu Zn Inorganic materials 0.000 abstract 1
- 229910018068 Li 2 O Inorganic materials 0.000 abstract 1
- 229910017709 Ni Co Inorganic materials 0.000 abstract 1
- 229910010413 TiO 2 Inorganic materials 0.000 abstract 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 abstract 1
- 238000007792 addition Methods 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229910052596 spinel Inorganic materials 0.000 abstract 1
- 239000011029 spinel Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 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
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
-
- 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
-
- 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
- C04B35/2683—Other ferrites containing alkaline earth metals or lead
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)
- Magnetic Ceramics (AREA)
Abstract
1,071,611. Magnetic compositions. SUMITOMO SPECIAL METALS CO. Ltd. June 15, 1964, No..24761/64. Heading H1H. In the manufacture of spinel ferrites the sintering is performed in two stages; in the first stage sintering takes place in a reducing atmosphere such as to produce a ferrite deficient in oxygen, and in the second stage sintering takes place in a more oxidizing atmosphere. The ferrites may be simple or mixed ferrites of Mn, Ni, Cu, Mg, Zn, Cd, Co, and Fe and may contain up to 0.035% by weight of CaO, Al 2 O 3 , TiO 2 , ZrO 2 , Li 2 O, BeO, MgO and B 2 O 3 and up to 3.5% by weight of In 2 O 3 , Sb 2 O 3 , SnO, Bi 2 O 3, As 2 O 3 CeO 2 and CuO. The sintering may take place in a N 2 atmosphere containing O 2 , the first stage being at 800‹ C.-1400‹ C. in an atmosphere having a partial pressure of oxygen between 10<SP>-6</SP> mm. Hg and 10 mm. Hg, and the second stage being performed at a higher temperature between 1000‹ and 1500‹ C. and at an increased pressure of 10<SP>-4</SP> mm. Hg to 200 mm. Hg. Cooling takes place at a pressure less than 40 mm. Hg. Specific examples of the manufacture of MnZn ferrite Mn Zn Cd ferrite, Ni Co ferrite, Mg ferrite and Cu Zn ferrite with various additions are disclosed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2476164A GB1071611A (en) | 1964-06-15 | 1964-06-15 | Process for producting ferrites |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2476164A GB1071611A (en) | 1964-06-15 | 1964-06-15 | Process for producting ferrites |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1071611A true GB1071611A (en) | 1967-06-07 |
Family
ID=10216841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2476164A Expired GB1071611A (en) | 1964-06-15 | 1964-06-15 | Process for producting ferrites |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1071611A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2022778A1 (en) * | 1969-05-09 | 1971-03-18 | Nippon Electric Co | Manganese-zinc ferrites |
| DE2164465A1 (en) * | 1970-12-27 | 1972-12-21 | Akai Electric | High density manganese zinc ferrites for magnetic recording and playback heads |
| JPS4839510A (en) * | 1971-09-21 | 1973-06-11 | ||
| US4521323A (en) * | 1984-06-27 | 1985-06-04 | Matsushita Electric Industrial Co., Ltd. | Polycrystalline ferrite and a magnetic head using the same |
| JPH01198003A (en) * | 1988-02-03 | 1989-08-09 | Tdk Corp | Sintered body of ferrite and chip component |
| US4985078A (en) * | 1988-06-09 | 1991-01-15 | Bayer Aktiengesellschaft | Thermostable zinc ferrite color pigments containing 0.05-0.5 wt % lithium, a process for their preparation and their use |
| EP1683840A3 (en) * | 2005-01-25 | 2008-08-06 | Lanxess Deutschland GmbH | Zinc-ferrit pigments stable against reduction, method for making and use of said pigments |
| CN108264341A (en) * | 2018-01-29 | 2018-07-10 | 江门市开源电子有限公司 | A kind of high frequency high impedance High Initial Permeability MnZn Ferrite Materials and its manufacturing method |
| CN114702310A (en) * | 2022-04-08 | 2022-07-05 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-loss spinel microwave ferrite material and preparation method thereof |
-
1964
- 1964-06-15 GB GB2476164A patent/GB1071611A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2022778A1 (en) * | 1969-05-09 | 1971-03-18 | Nippon Electric Co | Manganese-zinc ferrites |
| DE2164465A1 (en) * | 1970-12-27 | 1972-12-21 | Akai Electric | High density manganese zinc ferrites for magnetic recording and playback heads |
| JPS4839510A (en) * | 1971-09-21 | 1973-06-11 | ||
| JPS5318523B2 (en) * | 1971-09-21 | 1978-06-15 | ||
| US4521323A (en) * | 1984-06-27 | 1985-06-04 | Matsushita Electric Industrial Co., Ltd. | Polycrystalline ferrite and a magnetic head using the same |
| EP0326999A2 (en) * | 1988-02-03 | 1989-08-09 | TDK Corporation | Sintered ferrite materials and chip parts |
| JPH01198003A (en) * | 1988-02-03 | 1989-08-09 | Tdk Corp | Sintered body of ferrite and chip component |
| EP0326999A3 (en) * | 1988-02-03 | 1990-05-30 | Tdk Corporation | Sintered ferrite materials and chip parts |
| US5304318A (en) * | 1988-02-03 | 1994-04-19 | Tdk Corporation | Sintered ferrite materials and chip parts |
| JPH0630297B2 (en) * | 1988-02-03 | 1994-04-20 | ティーディーケイ株式会社 | Ferrite sintered body and chip parts |
| US4985078A (en) * | 1988-06-09 | 1991-01-15 | Bayer Aktiengesellschaft | Thermostable zinc ferrite color pigments containing 0.05-0.5 wt % lithium, a process for their preparation and their use |
| EP1683840A3 (en) * | 2005-01-25 | 2008-08-06 | Lanxess Deutschland GmbH | Zinc-ferrit pigments stable against reduction, method for making and use of said pigments |
| CN108264341A (en) * | 2018-01-29 | 2018-07-10 | 江门市开源电子有限公司 | A kind of high frequency high impedance High Initial Permeability MnZn Ferrite Materials and its manufacturing method |
| CN114702310A (en) * | 2022-04-08 | 2022-07-05 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Low-loss spinel microwave ferrite material and preparation method thereof |
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