GB1332577A - Ferrites - Google Patents
FerritesInfo
- Publication number
- GB1332577A GB1332577A GB4895571A GB4895571A GB1332577A GB 1332577 A GB1332577 A GB 1332577A GB 4895571 A GB4895571 A GB 4895571A GB 4895571 A GB4895571 A GB 4895571A GB 1332577 A GB1332577 A GB 1332577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mol
- per cent
- per
- atomization
- oct
- 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
1332577 Ferrites INTERNATIONAL STANDARD ELECTRIC CORP 21 Oct 1971 [29 Oct 1970] 48955/71 Heading H1H In a method of making ferrite material a mixture of 51À8-52À7 mol. per cent Fe 2 O 3 , 29À9-30À4 mol. per cent of MnO, and 16À9-17À1 mol. per cent ZnO form the basic components to which are added one or several of the following oxides: 0-0À10 mol. per cent Ta 2 O 5 , 0-1À15 mol. per cent TiO 2 and 0-0À80 mol. per cent SnO 2 such that the additives do not exceed 1À15 mol per cent and to which calcium may also be added in the proportion of 0À1-0À2% by weight of CaCO 3 , after which the composition is subjected to atomization, calcination, grinding, atomization of the ground powder, pressing into cones and sintering according to the following sequence: (1) the temperature being raised in air at a pressure of between 0À2 and 1 atmosphere at a rate of about 100‹C. per hour, (2) heating at a constant temperature between 1230 and 1330‹ C. for 2-10. hours in nitrogen gas comprising 2-8% by vol. of oxygen, at 1 atmosphere and (c) linearly cooling at a rate between 80 and 160‹ C. per hour while decreasing the oxygen content of the gas.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7039039A FR2110757A5 (en) | 1970-10-29 | 1970-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1332577A true GB1332577A (en) | 1973-10-03 |
Family
ID=9063481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4895571A Expired GB1332577A (en) | 1970-10-29 | 1971-10-21 | Ferrites |
Country Status (3)
| Country | Link |
|---|---|
| ES (1) | ES396449A1 (en) |
| FR (1) | FR2110757A5 (en) |
| GB (1) | GB1332577A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4372865A (en) * | 1980-09-26 | 1983-02-08 | Spang Industries, Inc. | Carbonate/hydroxide coprecipitation process |
| KR960013030B1 (en) * | 1991-06-18 | 1996-09-25 | 니뽄 스틸 코포레이션 | Low power -loss oxide magnetic material and process for producing the same |
-
1970
- 1970-10-29 FR FR7039039A patent/FR2110757A5/fr not_active Expired
-
1971
- 1971-10-21 GB GB4895571A patent/GB1332577A/en not_active Expired
- 1971-10-28 ES ES396449A patent/ES396449A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2110757A5 (en) | 1972-06-02 |
| ES396449A1 (en) | 1974-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |