CN103317145A - Method for preparing samarium cobalt magnetic powder by chemical method - Google Patents
Method for preparing samarium cobalt magnetic powder by chemical method Download PDFInfo
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- CN103317145A CN103317145A CN2013102865302A CN201310286530A CN103317145A CN 103317145 A CN103317145 A CN 103317145A CN 2013102865302 A CN2013102865302 A CN 2013102865302A CN 201310286530 A CN201310286530 A CN 201310286530A CN 103317145 A CN103317145 A CN 103317145A
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- nitrate
- cobalt magnetic
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- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 title claims abstract description 70
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000006247 magnetic powder Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000126 substance Substances 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 57
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 15
- 239000011575 calcium Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- 229910052771 Terbium Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 16
- 238000005245 sintering Methods 0.000 abstract description 3
- GGZZISOUXJHYOY-UHFFFAOYSA-N 8-amino-4-hydroxynaphthalene-2-sulfonic acid Chemical compound C1=C(S(O)(=O)=O)C=C2C(N)=CC=CC2=C1O GGZZISOUXJHYOY-UHFFFAOYSA-N 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- YZDZYSPAJSPJQJ-UHFFFAOYSA-N samarium(3+);trinitrate Chemical compound [Sm+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YZDZYSPAJSPJQJ-UHFFFAOYSA-N 0.000 abstract 1
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000011572 manganese Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 239000011651 chromium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical compound [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- 229910017827 Cu—Fe Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- PHFQLYPOURZARY-UHFFFAOYSA-N chromium trinitrate Chemical compound [Cr+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O PHFQLYPOURZARY-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a method for preparing samarium cobalt magnetic powder by the chemical method. The method includes the following steps: (1) dissolving samarium nitrate, cobalt nitrate, nitrate of metal M and citric acid into water, (2) carrying out heating and stirring to obtain sol, (3) drying the sol to form gel powder, (4) carrying out heat treatment in the air to obtain black powder, (5) evenly mixing the black powder with calcium powder, and carrying out restoration heat treatment in a vacuum tubular furnace to obtain the samarium cobalt magnetic powder. The sizes of particles of the magnetic powder prepared by the method are 0.01 micrometer to 50 micrometers and controllable, the particle size distribution is narrow, and the magnetic powder can be used as sintering samarium cobalt magnetic powder and can also be used as bonding samarium cobalt magnetic powder.
Description
Technical field
The present invention relates to the method that a kind of chemical method prepares samarium-cobalt magnetic powder.
Background technology
Rare earth SmCo permanent magnet is widely used in the industry such as electronics, instrument and space flight, and it has unique magnetic property, behind replacement ferrite or the AlNiCo, and the energy energy savings, reduced volume, weight reduction improves limit magnetic flux density.Samarium-cobalt permanent-magnetic material is mainly used in the permanent magnetism small and special electric machine, under the particular surroundings such as high temperature, high vacuum, the application of samarium cobalt permanent magnet motor is occupied an leading position, small and light with the motor that samarium-cobalt magnet makes, accurately, easy to control again, and material cost is feasible, can be used for the lathe of requirement Precision Machining control.In the information industry field, all need annular, rectangle, polygonal samarium cobalt permanent magnet body in the electronic technology communication, the in addition application in the magnet ring electro-acoustic element in the GSM third generation mobile phone, the electro-acoustic elements such as high-grade microphone, audiphone, sound pick-up, Microspeaker all be unable to do without the high-performance samarium cobalt permanent magnet.
At present, main SmCo based permanent magnetic material comprises SmCo
5, Sm
2Co
17, SmCo
7The compound of three types.SmCo
5The type magnet has higher magnetic property, but contains the strategy metal Co rare up to the costliness of 67wt.% (percentage by weight) and the rare earth metal Sm of 33wt.%, and cost is very high, and application is limited by very large.Sm
2Co
17Type permanent magnetism has larger saturation magnetization, and good monadic magnetocrystalline anisotropy (easily c-axis) and higher Curie temperature are a kind of potential desirable permanent-magnet materials.But its magnetocrystalline anisotropy field is lower, is difficult to become practical magnet.In order to improve magnetic property, people are developed Sm from two aspects
2Co
17The type permanent-magnet material adds on the one hand the element such as Mn, Cr and develops high performance permanent-magnet material; The permanent-magnet material in Sm-Co-Cu-Fe series on the other hand.
The granularity of SmCo powder is the key factor that affects SmCo base magnet sintering quality and magnetic property, and the magnet crystallite dimension that traditional melting, powder process, sintering, solid process of smelting obtain is very large, and is unfavorable to magnetic property.The SmCo magnetic powder particles size that the present invention adopts sol-gal process to prepare is controlled at 0.01-50 μ m, narrow particle size distribution, and this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Summary of the invention
The purpose of this invention is to provide the method that a kind of chemical method prepares samarium-cobalt magnetic powder.
Its step is:
1) nitrate with samaric nitrate, cobalt nitrate, metal M is dissolved in the deionized water, wherein the ratio of element samarium, cobalt, metal M is pressed the composition proportion interpolation of samarium-cobalt magnetic powder, nitrate concentration is controlled at 0.5-10mol/L, then add citric acid, the mol ratio of citric acid and nitrate anion is 1:(0.1-10), uniform stirring mixes;
2) above-mentioned mixed solution is heated to 50-95 ℃ after, stirred 0.5-10 hour, be cooled to 10-20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 70-120 ℃, dries 0.5-10 hour, until form gel powder;
4) then with above-mentioned gel powder in air 400-1000 ℃ heat treatment 1-4 hour, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 5-40%, carries out heat of reduction and processed 0.5-4 hour in vacuum tube furnace, and temperature is 600-1000 ℃, then acetic acid and the water with 1-10% cleans 3-5 time repeatedly, obtains the SmCo powder after the vacuum drying.
The composition proportion of described samarium-cobalt magnetic powder is Sm
xCo
yM
100-x-y(mass percent), wherein 2≤x≤50,30≤y≤98.
Described metal M is in Dy, Tb, Nb, Fe, Ga, Zr, Mn, Cr, Ti, Ni, Al, Gd, the Cu element one or more.
Described SmCo Magnaglo size is at 0.01-50 μ m.
Described SmCo powder can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
The magnetic powder particles size that the present invention prepares is controlled, narrow particle size distribution, and this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
The specific embodiment
The SmCo magnetic powder particles size that the present invention adopts sol-gal process to prepare is controlled at 0.01-50 μ m, narrow particle size distribution, and this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Concrete steps of the present invention are as follows:
1) nitrate with samaric nitrate, cobalt nitrate, metal M is dissolved in the deionized water, wherein the ratio of element samarium, cobalt, metal M is pressed the composition proportion interpolation of samarium-cobalt magnetic powder, nitrate concentration is at 0.5-10mol/L, then add citric acid, the mol ratio of citric acid and nitrate anion is 1:(0.1-10), uniform stirring mixes, and the composition proportion of samarium-cobalt magnetic powder is Sm
xCo
yM
100-x-y(mass percent), 2≤x≤50,30≤y≤98 wherein, metal M is in Dy, Tb, Nb, Fe, Ga, Zr, Mn, Cr, Ti, Ni, Al, Gd, the Cu element one or more;
2) above-mentioned mixed solution is heated to 50-95 ℃ after, stirred 0.5-10 hour, be cooled to 10-20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 70-120 ℃, dries 0.5-10 hour, until form gel powder;
4) then with above-mentioned gel powder in air 400-1000 ℃ heat treatment 1-4 hour, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 5-40%, carrying out heat of reduction in vacuum tube furnace processed 0.5-4 hour, temperature is 600-1000 ℃, then acetic acid and the water with 1-10% cleans 3-5 time repeatedly, obtains the SmCo powder size after the vacuum drying at 0.01-50 μ m.
Embodiment 1:
1) samaric nitrate, cobalt nitrate, ferric nitrate are dissolved in the deionized water by the composition proportion of samarium-cobalt magnetic powder, then nitrate concentration adds citric acid at 1mol/L, and the mol ratio of citric acid and nitrate anion is 1:2, uniform stirring mixes, and the composition proportion of samarium-cobalt magnetic powder is Sm
45Co
54.5Fe
0.5(mass percent);
2) above-mentioned mixed solution is heated to 90 ℃ after, stirred 5 hours, be cooled to 20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 120 ℃, dries 5 hours, until form gel powder;
4) then with the 600 ℃ of heat treatment 1 hour in air of above-mentioned gel powder, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 40%, carries out heat of reduction and processed 1 hour in vacuum tube furnace, and temperature is 700 ℃, then repeatedly clean 5 times with 4% acetic acid and water, obtain the SmCo powder size after the vacuum drying at 0.03 μ m.
The magnetic powder particles size that the present invention prepares is controlled, narrow particle size distribution, and maximum magnetic energy product is 9.4 * 10
6High oersted, this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Embodiment 2:
1) samaric nitrate, cobalt nitrate, manganese nitrate, chromic nitrate are dissolved in the deionized water by the composition proportion of samarium-cobalt magnetic powder, then nitrate concentration adds citric acid at 3mol/L, and the mol ratio of citric acid and nitrate anion is 1:0.5, uniform stirring mixes, and the composition proportion of samarium-cobalt magnetic powder is Sm
40Co
58Mn
1Cr
1(mass percent);
2) above-mentioned mixed solution is heated to 60 ℃ after, stirred 0.5 hour, be cooled to 20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 100 ℃, dries 6 hours, until form gel powder;
4) then with the 500 ℃ of heat treatment 2 hours in air of above-mentioned gel powder, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 30%, carries out heat of reduction and processed 1 hour in vacuum tube furnace, and temperature is 950 ℃, then repeatedly clean 3 times with 3% acetic acid and water, obtain the SmCo powder size after the vacuum drying at 5 μ m.
The magnetic powder particles size that the present invention prepares is controlled, narrow particle size distribution, and maximum magnetic energy product is 1.8 * 10
5High oersted, this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Embodiment 3:
1) samaric nitrate, cobalt nitrate, ferric nitrate, copper nitrate, zirconium nitrate are dissolved in the deionized water by the composition proportion of samarium-cobalt magnetic powder, then nitrate concentration adds citric acid at 3mol/L, and the mol ratio of citric acid and nitrate anion is 1:3, uniform stirring mixes, and the composition proportion of samarium-cobalt magnetic powder is Sm
45Co
35Fe
18Cu
1.5Zr
0.5(mass percent);
2) above-mentioned mixed solution is heated to 80 ℃ after, stirred 5 hours, be cooled to 20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 90 ℃, dries 8 hours, until form gel powder;
4) then with the 550 ℃ of heat treatment 1 hour in air of above-mentioned gel powder, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 20%, carries out heat of reduction and processed 3 hours in vacuum tube furnace, and temperature is 850 ℃, then repeatedly clean 3 times with 3% acetic acid and water, obtain the SmCo powder size after the vacuum drying at 0.8 μ m.
The magnetic powder particles size that the present invention prepares is controlled, narrow particle size distribution, and maximum magnetic energy product is 4.5 * 10
6High oersted, this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Embodiment 4:
1) samaric nitrate, cobalt nitrate, ferric nitrate, Titanium Nitrate are dissolved in the deionized water by the composition proportion of samarium-cobalt magnetic powder, then nitrate concentration adds citric acid at 3mol/L, and the mol ratio of citric acid and nitrate anion is 1:0.8, uniform stirring mixes, and the composition proportion of samarium-cobalt magnetic powder is Sm
40Co
48Fe
10Ti
2(mass percent);
2) above-mentioned mixed solution is heated to 70 ℃ after, stirred 0.5 hour, be cooled to 20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 90 ℃, dries 4 hours, until form gel powder;
4) then with the 800 ℃ of heat treatment 3 hours in air of above-mentioned gel powder, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 34%, carries out heat of reduction and processed 2.5 hours in vacuum tube furnace, and temperature is 850 ℃, then repeatedly clean 3 times with 3% acetic acid and water, obtain the SmCo powder size after the vacuum drying at 1 μ m.
The magnetic powder particles size that the present invention prepares is controlled, narrow particle size distribution, and maximum magnetic energy product is 7.8 * 10
5High oersted, this Magnaglo can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
Claims (5)
1. a chemical method prepares the method for samarium-cobalt magnetic powder, it is characterized in that its step is:
1) nitrate with samaric nitrate, cobalt nitrate, metal M is dissolved in the deionized water, wherein the ratio of element samarium, cobalt, metal M is pressed the composition proportion interpolation of samarium-cobalt magnetic powder, nitrate concentration is controlled at 0.5-10mol/L, then add citric acid, the mol ratio of citric acid and nitrate anion is 1:(0.1-10), uniform stirring mixes;
2) above-mentioned mixed solution is heated to 50-95 ℃ after, stirred 0.5-10 hour, be cooled to 10-20 ℃, obtain colloidal sol;
3) colloidal sol is put into baking oven, temperature is 70-120 ℃, dries 0.5-10 hour, until form gel powder;
4) then with above-mentioned gel powder in air 400-1000 ℃ heat treatment 1-4 hour, obtain black powder;
5) black powder is evenly mixed with calcium powder, the shared mass fraction of calcium powder is 5-40%, carries out heat of reduction and processed 0.5-4 hour in vacuum tube furnace, and temperature is 600-1000 ℃, then acetic acid and the water with 1-10% cleans 3-5 time repeatedly, obtains the SmCo powder after the vacuum drying.
2. chemical method according to claim 1 prepares the method for samarium-cobalt magnetic powder, and the composition proportion that it is characterized in that described samarium-cobalt magnetic powder is Sm
xCo
yM
100-x-y(mass percent), wherein 2≤x≤50,30≤y≤98.
3. chemical method according to claim 1 prepares the method for samarium-cobalt magnetic powder, it is characterized in that described metal M is in Dy, Tb, Nb, Fe, Ga, Zr, Mn, Cr, Ti, Ni, Al, Gd, the Cu element one or more.
4. chemical method according to claim 1 prepares the method for samarium-cobalt magnetic powder, it is characterized in that described SmCo Magnaglo size is at 0.01-50 μ m.
5. chemical method according to claim 1 prepares the method for samarium-cobalt magnetic powder, it is characterized in that described SmCo powder can be used as the sintered samarium cobalt magnetic, also can be used as the bonding samarium-cobalt magnetic powder.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157385A (en) * | 2014-03-15 | 2014-11-19 | 南通万宝实业有限公司 | High-coercivity samarium cobalt based permanent magnet material preparation method |
| CN104319046A (en) * | 2014-10-11 | 2015-01-28 | 宁波科星材料科技有限公司 | Samarium cobalt permanent magnet material |
| CN108526489A (en) * | 2018-05-08 | 2018-09-14 | 重庆科技学院 | Sol-gel method prepares the method and product of Sm-Co nano particles |
| CN109550973A (en) * | 2019-01-29 | 2019-04-02 | 重庆科技学院 | A kind of preparation method, magnetic powder and the magnet of AlNiCo/SmCo composite magnetic powder |
| CN110373591A (en) * | 2019-08-01 | 2019-10-25 | 苏州航大新材料科技有限公司 | A kind of magnetic material SmCo iron copper zirconium alloy and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177306A (en) * | 1983-03-25 | 1984-10-08 | Tdk Corp | Production of rare earth cobalt alloy powder |
| JP2009111277A (en) * | 2007-10-31 | 2009-05-21 | Tdk Corp | METHOD OF MANUFACTURING SmCo-BASED MAGNETIC PARTICULATE AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM |
| US20090142623A1 (en) * | 2007-11-30 | 2009-06-04 | Tdk Corporation | Magnetic recording medium and method for producing the same |
| CN102651263A (en) * | 2012-05-24 | 2012-08-29 | 宁波科星材料科技有限公司 | Preparation method of samarium-cobalt (SmCo) system sintered materials |
| CN103182514A (en) * | 2013-04-11 | 2013-07-03 | 中国石油大学(华东) | Method for preparing neodymium iron boron magnetic powder by self-propagating combustion |
-
2013
- 2013-07-09 CN CN201310286530.2A patent/CN103317145B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59177306A (en) * | 1983-03-25 | 1984-10-08 | Tdk Corp | Production of rare earth cobalt alloy powder |
| JP2009111277A (en) * | 2007-10-31 | 2009-05-21 | Tdk Corp | METHOD OF MANUFACTURING SmCo-BASED MAGNETIC PARTICULATE AND METHOD OF MANUFACTURING MAGNETIC RECORDING MEDIUM |
| US20090142623A1 (en) * | 2007-11-30 | 2009-06-04 | Tdk Corporation | Magnetic recording medium and method for producing the same |
| CN102651263A (en) * | 2012-05-24 | 2012-08-29 | 宁波科星材料科技有限公司 | Preparation method of samarium-cobalt (SmCo) system sintered materials |
| CN103182514A (en) * | 2013-04-11 | 2013-07-03 | 中国石油大学(华东) | Method for preparing neodymium iron boron magnetic powder by self-propagating combustion |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157385A (en) * | 2014-03-15 | 2014-11-19 | 南通万宝实业有限公司 | High-coercivity samarium cobalt based permanent magnet material preparation method |
| CN104319046A (en) * | 2014-10-11 | 2015-01-28 | 宁波科星材料科技有限公司 | Samarium cobalt permanent magnet material |
| CN104319046B (en) * | 2014-10-11 | 2017-07-07 | 宁波科星材料科技有限公司 | A kind of samarium-cobalt permanent-magnetic material |
| CN108526489A (en) * | 2018-05-08 | 2018-09-14 | 重庆科技学院 | Sol-gel method prepares the method and product of Sm-Co nano particles |
| CN109550973A (en) * | 2019-01-29 | 2019-04-02 | 重庆科技学院 | A kind of preparation method, magnetic powder and the magnet of AlNiCo/SmCo composite magnetic powder |
| CN109550973B (en) * | 2019-01-29 | 2021-12-24 | 重庆科技学院 | Preparation method of AlNiCo/SmCo composite magnetic powder, magnetic powder and magnet |
| CN110373591A (en) * | 2019-08-01 | 2019-10-25 | 苏州航大新材料科技有限公司 | A kind of magnetic material SmCo iron copper zirconium alloy and preparation method thereof |
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