GB638210A - Improved magnetic materials and devices - Google Patents
Improved magnetic materials and devicesInfo
- Publication number
- GB638210A GB638210A GB23311/47A GB2331147A GB638210A GB 638210 A GB638210 A GB 638210A GB 23311/47 A GB23311/47 A GB 23311/47A GB 2331147 A GB2331147 A GB 2331147A GB 638210 A GB638210 A GB 638210A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- per cent
- range
- temperature
- develop
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
A method of producing high permeability magnetic material comprises melting together under non - oxidizing conditions the ingredients containing Ni 75-85 per cent, Mo 2-7 per cent, a small percentage, e.g. up to 1 per cent, of Mn, if desired, to improve the workability, the remainder being iron and incidental impurities containing not more than 0.2 per cent of silicon by weight of the alloy, heat-treating a solid body of this alloy in hydrogen at a temperature above 1100 DEG C but below its melting point, and finally maintaining the alloy within a temperature range of 600-300 DEG C for a period of time sufficient to develop the required magnetic properties, e.g. by cooling through this range at a uniform rate of 2 DEG C per minute. The alloy may, alternatively, be maintained at a temperature within the said range, e.g. 480 DEG C for a time period sufficient to develop the required properties and cooled rapidly to room temperature. The alloy may be made by melting the ingredients in air under reduced pressure or in the presence of a non-oxidizing gas such as hydrogen, nitrogen or helium so that the initial partial pressure of oxygen does not exceed 2 1/2 inches of mercury. Prior to heat treatment the alloy may be formed into tape, an insulating coating being applied to the tape which is then wound into a coil.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US638210XA | 1946-08-23 | 1946-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638210A true GB638210A (en) | 1950-06-07 |
Family
ID=22051725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23311/47A Expired GB638210A (en) | 1946-08-23 | 1947-08-22 | Improved magnetic materials and devices |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE474121A (en) |
| GB (1) | GB638210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274888A (en) | 1977-10-01 | 1981-06-23 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Magnetic cores |
-
1947
- 1947-06-26 BE BE474121A patent/BE474121A/fr unknown
- 1947-08-22 GB GB23311/47A patent/GB638210A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4274888A (en) | 1977-10-01 | 1981-06-23 | Fried. Krupp Gesellschaft Mit Beschrankter Haftung | Magnetic cores |
Also Published As
| Publication number | Publication date |
|---|---|
| BE474121A (en) | 1947-07-31 |
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