US2027996A - Strong permanent magnet with cobalt - Google Patents
Strong permanent magnet with cobalt Download PDFInfo
- Publication number
- US2027996A US2027996A US673796A US67379633A US2027996A US 2027996 A US2027996 A US 2027996A US 673796 A US673796 A US 673796A US 67379633 A US67379633 A US 67379633A US 2027996 A US2027996 A US 2027996A
- Authority
- US
- United States
- Prior art keywords
- cobalt
- permanent magnet
- strong permanent
- nickel
- alloy
- 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 - Lifetime
Links
- 229910017052 cobalt Inorganic materials 0.000 title description 10
- 239000010941 cobalt Substances 0.000 title description 10
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052759 nickel Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/06—Filters making use of electricity or magnetism
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
Definitions
- the invention relates to a strong permanent magnet and forms a divisional application to Serial No. 587,822 filed January 20, 1932.
- the cobalt added in proper proportions named besides giving to the alloy the above mentioned characteristics, also serves to make crystal grains minute, thereby improving the magnetic properties of the alloy. It is also 5 given a high coercive force and a strong rmidual magnetism without being quenched after casting, and the mechanical working of the alloy is made easy. In this case also it is noted that the presence of carbon of below 1.5% and/or a small 10 amount of impurities does not materially affect the magnetic properties of the alloy.
- a permanent magnet comprising 5 to 40% nickel, 7 to 20% aluminum, 0.5 to 30% cobalt and 15 the remainder iron.
- a permanent magnet comprising 5 to 40% nickel, '7 to 20% aluminum, 0.5 to 30% cobalt and the remainder substantially iron.
- a permanent magnet comprising 5 to 40% 20 nickel, 7 to 20% aluminum, 0.5 to 30% cobalt, from trace to 1.5% carbon and the remainder iron.
- a permanent magnet comprising 5 to 40% nickel, 'I to 20% aluminum, 0.5 to 30% cobalt, 25 from trace to 1.5% carbon and the remainder substantially iron.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hard Magnetic Materials (AREA)
Description
Patented Jan. 14, 1936 UNITED STATES STRONG PERMANENT MAGNET WITH COBALT Tokushichi Mishima, Ochiai-machi, Toyotama-gori, Tokyo, Japan No Drawing. Original application January 20,
1932, Serial No. 587,822.
Divided and this application May 31, 1933, Serial No. 673,796. In
Japan August 27, 1931 4 Claims. (01. 175-21) The invention relates to a strong permanent magnet and forms a divisional application to Serial No. 587,822 filed January 20, 1932.
In my co-pending application No. 587,822, I
5 fully explained a new permanent magnet comprising 5 to 40% Ni, 7 to 20% Al and the remainder substantially iron, with or without the addition of other metals, and carbon below 1.5% and also small impurities. The subject matter of the 10 invention is a division from the above mentioned application.
It is described in the above mentioned application No. 587,822, that an irreversible nickel steel can be changed into a "reversible steel by adding aluminum, yielding a strong magnetic al- 10y. According to the invention it has been found that an addition of cobalt in a proper amount can also improve the magnetic properties of the alloy. In addition, its tenacity and ductility are much improved and the mechanical working is made very easy.
It is knownthat the more minute the microstructure of magnet, steels is the more increases the number 01' the molecular magnets arranged irregularly at the boundaries of the crystal grains, so that consequently the coercive force and the residual magnetism also increase. The invention is also based on this principle, and it is found that the addition of 0.5%-40% cobalt to the new alloy containing nickel, aluminuim and iron in the proportion as mentioned above. will make the crystal grains minute, and in consequence increase the coercive iorce and residual magnetism.
The actual examples for carrying out the invention thus modified are given below:
' Ohemicol composition (percent). Magnetic properties Coercive Residual 40 Iron Nickel g Cobalt loroe (He) magnetism (saw) r (s w) 00 0 17. 0 9. 0 5. 0 9, 400 65 0 16. 0 9. 0 10. 0 185 10, (III 50 4 12. 4 7. 0 80. 0 9, mo 5 oo o 24.8 10.0 5.0 200 9,800 I 52 8 30. 5 12 0 4. 5 510 0, M
That is to say, the cobalt added in proper proportions named, besides giving to the alloy the above mentioned characteristics, also serves to make crystal grains minute, thereby improving the magnetic properties of the alloy. It is also 5 given a high coercive force and a strong rmidual magnetism without being quenched after casting, and the mechanical working of the alloy is made easy. In this case also it is noted that the presence of carbon of below 1.5% and/or a small 10 amount of impurities does not materially affect the magnetic properties of the alloy.
What I claim is:--
1. A permanent magnet comprising 5 to 40% nickel, 7 to 20% aluminum, 0.5 to 30% cobalt and 15 the remainder iron.
2; A permanent magnet comprising 5 to 40% nickel, '7 to 20% aluminum, 0.5 to 30% cobalt and the remainder substantially iron.
3. A permanent magnet comprising 5 to 40% 20 nickel, 7 to 20% aluminum, 0.5 to 30% cobalt, from trace to 1.5% carbon and the remainder iron.-
4. A permanent magnet comprising 5 to 40% nickel, 'I to 20% aluminum, 0.5 to 30% cobalt, 25 from trace to 1.5% carbon and the remainder substantially iron.
' TOKUSHICHI MISHIMA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US673796A US2027996A (en) | 1932-01-20 | 1933-05-31 | Strong permanent magnet with cobalt |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US587822A US2027994A (en) | 1931-03-09 | 1932-01-20 | Magnet steel containing nickel and aluminium |
| US673796A US2027996A (en) | 1932-01-20 | 1933-05-31 | Strong permanent magnet with cobalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2027996A true US2027996A (en) | 1936-01-14 |
Family
ID=27080134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US673796A Expired - Lifetime US2027996A (en) | 1932-01-20 | 1933-05-31 | Strong permanent magnet with cobalt |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2027996A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3414430A (en) * | 1962-09-18 | 1968-12-03 | Gevaert Photo Prod Nv | Magnetic signal storing elements comprising a vacuum-evaporated magnetizable coatingapplied to a non-magnetic supporting member provided with an elastomeric adhesive layer |
| US4033791A (en) * | 1975-01-22 | 1977-07-05 | Polska Akademia Nauk, Instytut Fizyki | Magnetostrictive alloy |
| US20170077758A1 (en) * | 2013-10-10 | 2017-03-16 | Sony Corporation | Power receiving unit, power transmission unit, and feed system |
-
1933
- 1933-05-31 US US673796A patent/US2027996A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3414430A (en) * | 1962-09-18 | 1968-12-03 | Gevaert Photo Prod Nv | Magnetic signal storing elements comprising a vacuum-evaporated magnetizable coatingapplied to a non-magnetic supporting member provided with an elastomeric adhesive layer |
| US4033791A (en) * | 1975-01-22 | 1977-07-05 | Polska Akademia Nauk, Instytut Fizyki | Magnetostrictive alloy |
| US20170077758A1 (en) * | 2013-10-10 | 2017-03-16 | Sony Corporation | Power receiving unit, power transmission unit, and feed system |
| US10340740B2 (en) * | 2013-10-10 | 2019-07-02 | Sony Corporation | Power receiving unit, power transmission unit, and feed system |
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