GB713370A - Improvements in or relating to ferrite magnetic materials - Google Patents
Improvements in or relating to ferrite magnetic materialsInfo
- Publication number
- GB713370A GB713370A GB986852A GB986852A GB713370A GB 713370 A GB713370 A GB 713370A GB 986852 A GB986852 A GB 986852A GB 986852 A GB986852 A GB 986852A GB 713370 A GB713370 A GB 713370A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- added
- ferric oxide
- ferrite
- boron
- 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
Abstract
713,370. Magnetic compositions. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 17, 1953 [April 18, 1952], No. 9868/52, Class 38(2) Magnetic ferrite composition's are made by a process in which one or more compounds of boron are added to ferrite forming materials, the equivalent boron content being less than 1.25 per cent by weight of these materials. Additional ferric oxide may be added with the boron compounds. Examples are described in which 0.28 per cent of boron nitride and 2.72 per cent of additional ferric oxide are added to the mix in. making lithium-zinc, nickel-zinc and manganese-zinc ferrites; in which 0.8 per cent of boric acid and 1.7 per cent of ferric oxide or 0.53 per cent of sodium borate and 1.97 per cent of ferric oxide are added in making lithium-zinc ferrite, in which 0.8 per cent of boric acid and 1.7 per cent ferric oxide are added in making lithium-cadmium ferrite; and in which various percentages up to 30 of boron nitride and ferric oxide mixed are added in making lithium ferrite. The processes include the steps of mixing all ingredients wet, drying, compressing, heating at 1000‹- 1050‹C, crushing, adding water and gum arabic, compressing and firing at 1200‹C. Values of γ, Q and 10-4/Qγ for each product are given and compared. with those obtained with similar materials without the boron addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB986852A GB713370A (en) | 1952-04-18 | 1952-04-18 | Improvements in or relating to ferrite magnetic materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB986852A GB713370A (en) | 1952-04-18 | 1952-04-18 | Improvements in or relating to ferrite magnetic materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB713370A true GB713370A (en) | 1954-08-11 |
Family
ID=9880259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB986852A Expired GB713370A (en) | 1952-04-18 | 1952-04-18 | Improvements in or relating to ferrite magnetic materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB713370A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2934667A (en) * | 1958-06-17 | 1960-04-26 | Gen Electric | Controlled resistivity glaze for ignitor plugs |
| US3006853A (en) * | 1957-12-19 | 1961-10-31 | Ibm | Square loop cadmium-nickel ferrites |
| US3057802A (en) * | 1958-02-13 | 1962-10-09 | Lignes Telegraph Telephon | Magnetic materials of the high permeability ferrite type |
| US3096288A (en) * | 1957-12-23 | 1963-07-02 | Union Carbide Corp | Ferri-magnetic spinel bodies |
| DE1265024B (en) * | 1962-01-05 | 1968-03-28 | Philips Nv | Process for the production of a magnetic core with a rectangular hysteresis loop |
| US4310899A (en) * | 1979-02-06 | 1982-01-12 | U.S. Philips Corporation | Thermomagnetic record carrier |
| CN117185796A (en) * | 2023-09-25 | 2023-12-08 | 浙江凯文磁钢有限公司 | Method for manufacturing M-type permanent magnetic ferrite material by binary formula |
-
1952
- 1952-04-18 GB GB986852A patent/GB713370A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3006853A (en) * | 1957-12-19 | 1961-10-31 | Ibm | Square loop cadmium-nickel ferrites |
| US3096288A (en) * | 1957-12-23 | 1963-07-02 | Union Carbide Corp | Ferri-magnetic spinel bodies |
| US3057802A (en) * | 1958-02-13 | 1962-10-09 | Lignes Telegraph Telephon | Magnetic materials of the high permeability ferrite type |
| US2934667A (en) * | 1958-06-17 | 1960-04-26 | Gen Electric | Controlled resistivity glaze for ignitor plugs |
| DE1265024B (en) * | 1962-01-05 | 1968-03-28 | Philips Nv | Process for the production of a magnetic core with a rectangular hysteresis loop |
| US4310899A (en) * | 1979-02-06 | 1982-01-12 | U.S. Philips Corporation | Thermomagnetic record carrier |
| CN117185796A (en) * | 2023-09-25 | 2023-12-08 | 浙江凯文磁钢有限公司 | Method for manufacturing M-type permanent magnetic ferrite material by binary formula |
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