ES311036A1 - Method of manufacturing a magnetic memory core - Google Patents
Method of manufacturing a magnetic memory coreInfo
- Publication number
- ES311036A1 ES311036A1 ES0311036A ES311036A ES311036A1 ES 311036 A1 ES311036 A1 ES 311036A1 ES 0311036 A ES0311036 A ES 0311036A ES 311036 A ES311036 A ES 311036A ES 311036 A1 ES311036 A1 ES 311036A1
- Authority
- ES
- Spain
- Prior art keywords
- rings
- air
- uvl
- oxides
- value
- 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
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
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)
- Powder Metallurgy (AREA)
Abstract
An annular magnetic core having an external diameter less than 0À9 mm., an internal diameter of at least half the external diameter, a height from 0À2 to 0À3 mm., a value of uVl>18mV, and a value of uVl/dVz not less than 5 at a disturbance ratio of 0À55 and a rise time of 0À2Á sees., is manufactured by sintering a presintered product prepared from a mixture of oxides or equivalent compounds having the composition: The manufacturing process comprises preparing a finely-divided mixture of the oxides, presintering between 600 and 700 C., pulverizing, granulating using an organic binder such as polyvinyl alcohol, separating a fraction with a grain size between 50Á and 120Á, moulding these granules into rings, introducing the rings into an oven on a Pt-Rh alloy plate at such a rate that the rings reach a zone between 1350 and 1370 C. within 60 seconds, cooling the rings at not more than 30 /min. to a temperature between 930 and 975 C. and quenching the rings in air at room temperature, wherein the oven atmosphere is air or air and oxygen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6403377A NL6403377A (en) | 1964-03-28 | 1964-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES311036A1 true ES311036A1 (en) | 1965-06-01 |
Family
ID=19789680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0311036A Expired ES311036A1 (en) | 1964-03-28 | 1965-03-26 | Method of manufacturing a magnetic memory core |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3372216A (en) |
| AT (1) | AT250071B (en) |
| BE (1) | BE661714A (en) |
| CH (1) | CH465727A (en) |
| DE (1) | DE1646767A1 (en) |
| DK (1) | DK116806B (en) |
| ES (1) | ES311036A1 (en) |
| FR (1) | FR1432037A (en) |
| GB (1) | GB1094527A (en) |
| NL (1) | NL6403377A (en) |
| NO (1) | NO119648B (en) |
| SE (1) | SE304792B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723238A (en) * | 1952-08-19 | 1955-11-08 | Rca Corp | Manganese zinc ferrospinel compositions, including copper oxide |
| NL276431A (en) * | 1962-03-26 | |||
| NL286714A (en) * | 1962-12-13 | 1965-12-10 |
-
1964
- 1964-03-28 NL NL6403377A patent/NL6403377A/xx unknown
-
1965
- 1965-03-24 US US442536A patent/US3372216A/en not_active Expired - Lifetime
- 1965-03-24 DE DE19651646767 patent/DE1646767A1/en active Pending
- 1965-03-25 DK DK155365AA patent/DK116806B/en unknown
- 1965-03-25 CH CH416565A patent/CH465727A/en unknown
- 1965-03-25 AT AT272665A patent/AT250071B/en active
- 1965-03-25 NO NO157393A patent/NO119648B/no unknown
- 1965-03-25 GB GB12697/65A patent/GB1094527A/en not_active Expired
- 1965-03-25 SE SE3910/65A patent/SE304792B/xx unknown
- 1965-03-26 BE BE661714A patent/BE661714A/xx unknown
- 1965-03-26 ES ES0311036A patent/ES311036A1/en not_active Expired
- 1965-03-27 FR FR10979A patent/FR1432037A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1094527A (en) | 1967-12-13 |
| CH465727A (en) | 1968-11-30 |
| AT250071B (en) | 1966-10-25 |
| BE661714A (en) | 1965-09-27 |
| FR1432037A (en) | 1966-03-18 |
| DE1646767A1 (en) | 1971-08-05 |
| SE304792B (en) | 1968-10-07 |
| NO119648B (en) | 1970-06-15 |
| NL6403377A (en) | 1965-09-29 |
| US3372216A (en) | 1968-03-05 |
| DK116806B (en) | 1970-02-16 |
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