GB1048386A - Improvements in or relating to ferrite compositions - Google Patents
Improvements in or relating to ferrite compositionsInfo
- Publication number
- GB1048386A GB1048386A GB29439/63A GB2943963A GB1048386A GB 1048386 A GB1048386 A GB 1048386A GB 29439/63 A GB29439/63 A GB 29439/63A GB 2943963 A GB2943963 A GB 2943963A GB 1048386 A GB1048386 A GB 1048386A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mol
- per cent
- oxide
- calcium
- july
- 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
- C04B35/2608—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
- C04B35/2625—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 containing magnesium
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Magnetic Ceramics (AREA)
Abstract
1,048,386. Magnetic compositions. WESTERN ELECTRIC CO. Inc. July 25, 1963 [July 31, 1962], No. 29439/63. Heading H1H. A method of making a ferrite material having a rectangular hysteresis loop and low coercivity comprises preparing a slurry consisting of oxides (or oxide yielding compounds) in the proportions 4-67 mol. per cent manganese oxide, 8-55 mol. per cent magnesium oxide, 25-50 mol. per cent ferric oxide and 0-18 mol. per cent zinc oxide, together with 0À075 to 0À3% by weight of calcium in the form of a soluble salt, drying the slurry, calcining for 2-16 hours at a temperature between 800‹ C. and 1100‹ C.; ball milling, adding a binder, granulating, compressing under 5000 to 50,000 lb/ square inch, firing in an oxygen atmosphere at between 1200‹ C. and 1350‹ C. for 7-15 hours and cooling to room temperature in nitrogen. The soluble calcium salt (e.g. calcium acetate) enables the calcium to be thoroughly dispersed during slurrying.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US213639A US3226327A (en) | 1962-07-31 | 1962-07-31 | Ferrite compositions and method of manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1048386A true GB1048386A (en) | 1966-11-16 |
Family
ID=22795887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29439/63A Expired GB1048386A (en) | 1962-07-31 | 1963-07-25 | Improvements in or relating to ferrite compositions |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3226327A (en) |
| DE (1) | DE1263575B (en) |
| FR (1) | FR1364391A (en) |
| GB (1) | GB1048386A (en) |
| NL (2) | NL138885C (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2981689A (en) * | 1953-02-03 | 1961-04-25 | Steatite Res Corp | Square loop ferrites |
| US2715109A (en) * | 1954-06-14 | 1955-08-09 | Steatite Res Corp | Ferromagnetic ceramic materials with hysteresis loops of rectangular shape |
| FR1110334A (en) * | 1954-07-13 | 1956-02-10 | Improvements to such ferromagnetic materials | |
| FR1121088A (en) * | 1955-02-03 | 1956-07-20 | Lignes Telegraph Telephon | Ferromagnetic materials with rectangular hysteresis cycle |
| FR1174680A (en) * | 1957-05-09 | 1959-03-13 | Csf | Improvements to manufacturing processes for ternary manganese and zinc ferrites |
-
1962
- 1962-07-31 US US213639A patent/US3226327A/en not_active Expired - Lifetime
-
1963
- 1963-07-17 DE DEW34906A patent/DE1263575B/en active Pending
- 1963-07-23 FR FR942428A patent/FR1364391A/en not_active Expired
- 1963-07-25 GB GB29439/63A patent/GB1048386A/en not_active Expired
- 1963-07-29 NL NL63295921A patent/NL138885C/en active
- 1963-07-29 NL NL295921D patent/NL295921A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3226327A (en) | 1965-12-28 |
| DE1263575B (en) | 1968-03-14 |
| NL295921A (en) | 1965-05-10 |
| FR1364391A (en) | 1964-06-19 |
| NL138885C (en) | 1973-10-15 |
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