GB522731A - Improvements in or relating to permanent magnets and processes of treating alloys for such magnets - Google Patents
Improvements in or relating to permanent magnets and processes of treating alloys for such magnetsInfo
- Publication number
- GB522731A GB522731A GB3573038A GB3573038A GB522731A GB 522731 A GB522731 A GB 522731A GB 3573038 A GB3573038 A GB 3573038A GB 3573038 A GB3573038 A GB 3573038A GB 522731 A GB522731 A GB 522731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- alloys
- cooling
- magnets
- permanent magnets
- 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
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
522,731. Alloys; annealing &c. MEYER, L. W. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken.). Dec. 7, 1938, No. 35730.. Drawings to Specification. [Classes 72 and 82 (i)] Permanent magnets having anisotropic properties are made from iron alloys containing 16-30 per cent. of cobalt, 12-20 per cent. of nickel, and 6-11 per cent. of aluminium, with or without up to 5 per cent. of titanium, and up to 7 per cent. of copper, and with or without the addition of other elements such as silicon, vanadium, antimony, tin, sulphur, chromium, manganese, calcium and tungsten, by cooling them from a high temperature, for example - 1200‹C., while subjected to the action of a magnetic field, preferably in a range between the curie point and about 150‹C. below. The cooling may be effected at not over 10‹C. per second, and the alloy may thereafter be aged by a method in which the cooling from 700‹C. to 500‹C. is effected in stages, the alloys being kept at the successively decreasing temperatures for increasing times.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3573038A GB522731A (en) | 1938-12-07 | 1938-12-07 | Improvements in or relating to permanent magnets and processes of treating alloys for such magnets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3573038A GB522731A (en) | 1938-12-07 | 1938-12-07 | Improvements in or relating to permanent magnets and processes of treating alloys for such magnets |
Publications (1)
Publication Number | Publication Date |
---|---|
GB522731A true GB522731A (en) | 1940-06-26 |
Family
ID=10380948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3573038A Expired GB522731A (en) | 1938-12-07 | 1938-12-07 | Improvements in or relating to permanent magnets and processes of treating alloys for such magnets |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB522731A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442762A (en) * | 1943-09-09 | 1948-06-08 | Bell Telephone Labor Inc | Methods of improving the magnetic quality of anisotropic permanent magnets containing iron, nickel, cobalt, and aluminum |
US2482364A (en) * | 1941-10-22 | 1949-09-20 | Bell Telephone Labor Inc | Device for heat-treating magnetic materials |
US2499860A (en) * | 1946-10-03 | 1950-03-07 | Crucible Steel Co America | Production of permanent magnets and alloys therefor |
US2546047A (en) * | 1948-04-13 | 1951-03-20 | Gen Electric | Sintered anisotropic alnico magnet |
DE761347C (en) * | 1942-02-06 | 1954-07-05 | Boehler & Co A G Geb | Heat treatment of precipitation hardenable permanent magnet alloys in a magnetic field |
US2694167A (en) * | 1951-07-10 | 1954-11-09 | Jessop William & Sons Ltd | Permanent magnet alloy |
US2694166A (en) * | 1951-07-10 | 1954-11-09 | Jessop William & Sons Ltd | Permanent magnet alloy |
US2694790A (en) * | 1948-02-17 | 1954-11-16 | Gen Electric | Sintered anisotropic permanent magnet |
US2988466A (en) * | 1957-11-29 | 1961-06-13 | Gen Electric | Magnetic material |
DE1282206B (en) * | 1965-06-18 | 1968-11-07 | Magnetfab Bonn Gmbh | Process for the production of anisotropic permanent magnets with increased reversible permeability |
CN104668549A (en) * | 2013-12-02 | 2015-06-03 | 财团法人工业技术研究院 | Alloy powder and laser adding material manufacturing process applying same |
-
1938
- 1938-12-07 GB GB3573038A patent/GB522731A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2482364A (en) * | 1941-10-22 | 1949-09-20 | Bell Telephone Labor Inc | Device for heat-treating magnetic materials |
DE761347C (en) * | 1942-02-06 | 1954-07-05 | Boehler & Co A G Geb | Heat treatment of precipitation hardenable permanent magnet alloys in a magnetic field |
US2442762A (en) * | 1943-09-09 | 1948-06-08 | Bell Telephone Labor Inc | Methods of improving the magnetic quality of anisotropic permanent magnets containing iron, nickel, cobalt, and aluminum |
US2499860A (en) * | 1946-10-03 | 1950-03-07 | Crucible Steel Co America | Production of permanent magnets and alloys therefor |
US2694790A (en) * | 1948-02-17 | 1954-11-16 | Gen Electric | Sintered anisotropic permanent magnet |
US2546047A (en) * | 1948-04-13 | 1951-03-20 | Gen Electric | Sintered anisotropic alnico magnet |
US2694167A (en) * | 1951-07-10 | 1954-11-09 | Jessop William & Sons Ltd | Permanent magnet alloy |
US2694166A (en) * | 1951-07-10 | 1954-11-09 | Jessop William & Sons Ltd | Permanent magnet alloy |
US2988466A (en) * | 1957-11-29 | 1961-06-13 | Gen Electric | Magnetic material |
DE1282206B (en) * | 1965-06-18 | 1968-11-07 | Magnetfab Bonn Gmbh | Process for the production of anisotropic permanent magnets with increased reversible permeability |
CN104668549A (en) * | 2013-12-02 | 2015-06-03 | 财团法人工业技术研究院 | Alloy powder and laser adding material manufacturing process applying same |
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