CN116864294B - Iron-nickel magnetic core and preparation method and application thereof - Google Patents
Iron-nickel magnetic core and preparation method and application thereof Download PDFInfo
- Publication number
- CN116864294B CN116864294B CN202310973786.4A CN202310973786A CN116864294B CN 116864294 B CN116864294 B CN 116864294B CN 202310973786 A CN202310973786 A CN 202310973786A CN 116864294 B CN116864294 B CN 116864294B
- Authority
- CN
- China
- Prior art keywords
- powder
- magnetic core
- annealing
- iron
- mass
- 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.)
- Active
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 49
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229910004349 Ti-Al Inorganic materials 0.000 claims abstract description 90
- 229910004692 Ti—Al Inorganic materials 0.000 claims abstract description 90
- 239000000843 powder Substances 0.000 claims abstract description 83
- 239000002131 composite material Substances 0.000 claims abstract description 38
- 238000000137 annealing Methods 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims abstract description 19
- 229920002050 silicone resin Polymers 0.000 claims abstract description 19
- 239000011812 mixed powder Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000007822 coupling agent Substances 0.000 claims abstract description 6
- 239000012298 atmosphere Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 18
- 239000003570 air Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000009692 water atomization Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 4
- 229910000863 Ferronickel Inorganic materials 0.000 abstract description 3
- 238000000748 compression moulding Methods 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 35
- 239000006087 Silane Coupling Agent Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 230000035699 permeability Effects 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000012299 nitrogen atmosphere Substances 0.000 description 6
- 238000009740 moulding (composite fabrication) Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- 239000002923 metal particle Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- YCANCZRRZBHLEN-UHFFFAOYSA-N [N].O Chemical compound [N].O YCANCZRRZBHLEN-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- CMBZEFASPGWDEN-UHFFFAOYSA-N argon;hydrate Chemical compound O.[Ar] CMBZEFASPGWDEN-UHFFFAOYSA-N 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
Abstract
The invention discloses a ferro-nickel magnetic core, a preparation method and application thereof. The preparation method of the iron-nickel magnetic core comprises the following steps: 1) Preparing Fe-Ni-Si-Ti-Al powder; 2) Preparing Fe-Ni-Si-Ti-Al powder containing the Si-Ti-Al composite oxide layer; 3) Preparing a mixed powder composed of Fe-Ni-Si-Ti-Al powder and Fe-Ni powder of the Ti-Al containing composite metal layer; 4) And mixing the mixed powder, the silicone resin and the coupling agent, and then performing compression molding and annealing to obtain the iron-nickel magnetic core. The iron-nickel magnetic core has the advantages of high bending strength, high magnetic conductivity, low power consumption and the like, is simple in preparation process and low in production cost, can be used as the magnetic core of the inductor in the direct-current converter in a high-power application scene, and is suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the technical field of alloy magnetic cores, in particular to a ferro-nickel magnetic core, a preparation method and application thereof.
Background
Currently, with the help of the powerful computing power of a Graphics Processor (GPU), supercomputers have wide applications in data processing, physical simulation, weather prediction, modern pharmacy, genetic sequencing, advanced manufacturing, artificial intelligence, cryptanalysis, etc. The stability and reliability of the power supply can be guaranteed only by matching a plurality of inductance magnetic cores in the GPU, and as the computing capacity of the GPU increases, the current of the GPU is continuously increased, the power is higher and higher, the heat is larger and higher, and higher requirements are also put forward for the inductance magnetic cores by people. However, the inductance magnetic core made of the existing soft magnetic alloy material has the problems of low strength, low magnetic permeability, high power consumption and the like, and the inductance magnetic core is difficult to completely meet the increasing practical application requirements.
Therefore, the development of the iron-nickel magnetic core with high strength, high magnetic permeability and low power consumption has very important significance.
The statements above merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Disclosure of Invention
The invention aims to provide a ferro-nickel magnetic core, a preparation method and application thereof.
The technical scheme adopted by the invention is as follows:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) Smelting Fe-Ni-Si-Ti-Al material, performing ultrahigh pressure water atomization, and performing air flow classification to obtain Fe-Ni-Si-Ti-Al powder with the particle size of 3-50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and high temperature resistant oxide powder with the particle size of 0.1-1 mu m, then placing the mixture in an atmosphere containing water vapor for treatment at 400-600 ℃, and then screening out the high temperature resistant oxide powder to obtain Fe-Ni-Si-Ti-Al powder containing a Si-Ti-Al composite oxide layer;
3) Mixing Fe-Ni-Si-Ti-Al powder containing the Si-Ti-Al composite oxide layer with Fe-Ni powder, and then annealing at 600-700 ℃ in a reducing atmosphere to form a Ti-Al composite metal layer on the surface of the Si-Ti-Al composite oxide layer, thereby obtaining mixed powder composed of the Fe-Ni-Si-Ti-Al powder containing the Ti-Al composite metal layer and the Fe-Ni powder;
4) Mixing the mixed powder, the silicone resin and the coupling agent, pressing and forming, performing primary annealing at 550-650 ℃ in air atmosphere, and performing secondary annealing at 680-750 ℃ in protective atmosphere to obtain the iron-nickel magnetic core.
Preferably, the Fe-Ni-Si-Ti-Al material in the step 1) comprises the following components in percentage by mass:
Fe：45％～57.45％；
Ni：40％～48％；
Si：1.5％～3.5％；
Ti：1.0％～3.0％；
Al：0.05％～0.5％。
preferably, the addition amount of the high-temperature resistant oxide powder in the step 2) is 5-15% of the mass of the Fe-Ni-Si-Ti-Al powder.
Preferably, the refractory oxide powder in the step 2) is at least one of a silicon oxide powder and an aluminum oxide powder. The high-temperature resistant oxide powder is distributed among the Fe-Ni-Si-Ti-Al powder, so that the agglomeration of the Fe-Ni-Si-Ti-Al powder caused by adhesion in the oxidation treatment process can be effectively prevented.
Preferably, the atmosphere containing water vapor of step 2) is composed of water vapor and at least one of air, nitrogen and argon.
Preferably, the volume percentage of the water vapor in the atmosphere containing water vapor in the step 2) is 70-90%.
Preferably, the treatment in step 2) takes 1 to 5 hours.
Preferably, the method comprises the steps of, the particle size of the Fe-Ni-Si-Ti-Al powder of the Si-Ti-Al containing composite oxide layer in the step 2) is 6-38 mu m.
Preferably, the Fe-Ni powder of step 3) is added in an amount of 8 to 21% by mass of the Fe-Ni-Si-Ti-Al powder of the Si-Ti-Al containing composite oxide layer.
Preferably, the mass percentage of Fe in the Fe-Ni powder in the step 3) is 45% -55%.
Preferably, step 3) D of the Fe-Ni powder 50 The grain diameter is 10 mu m to 15 mu m, D 90 The particle size is 26-32 μm.
Preferably, the reducing atmosphere in step 3) is a hydrogen-containing atmosphere.
Preferably, the annealing time in the step 3) is 1-3 h.
Preferably, the addition amount of the silicon resin in the step 4) is 1.5-2.5% of the mass of the mixed powder.
Preferably, the silicone resin in the step 4) is at least one of silicone resin KR-220L of Xinyue chemical industry Co., ltd, silicone resin KR-282 of Xinyue chemical industry Co., ltd, and silicone resin KR-311 of Xinyue chemical industry Co., ltd.
Preferably, the addition amount of the coupling agent in the step 4) is 0.2-0.4% of the mass of the mixed powder.
Preferably, the coupling agent in the step 4) is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the pressing in step 4) is carried out at a pressure of 16 tons/cm 2 About 20 tons/cm 2 。
Preferably, the time of the first annealing in the step 4) is 0.5 h-1.5 h.
Preferably, the protective atmosphere in step 4) is a nitrogen atmosphere.
Preferably, the time of the second annealing in the step 4) is 1 to 3 hours.
A ferromagnetic-nickel core is prepared by the preparation method.
An electronic product comprises the iron-nickel magnetic core.
The beneficial effects of the invention are as follows: the iron-nickel magnetic core has the advantages of high bending strength, high magnetic conductivity, low power consumption and the like, is simple in preparation process and low in production cost, can be used as the magnetic core of the inductor in the direct-current converter in a high-power application scene, and is suitable for large-scale popularization and application.
Specifically: according to the invention, the material composition and the technological process are improved and optimized, ti, al and Si are gradually separated out by utilizing the catalysis of high-temperature vapor, a Si-Ti-Al composite oxide layer is formed on the surface of metal particles, and then a Ti-Al composite metal layer is formed on the surface of the Si-Ti-Al composite oxide layer through reduction treatment, wherein the Si-Ti-Al composite oxide layer can improve the insulating property of the magnetic core material, so that the eddy current loss among the particles can be reduced, and the Ti-Al composite metal layer can form a Ti-Al oxide film among the metal particles in the compression molding process of the magnetic core material to realize the bonding of the metal particles, so that the processes of impregnating resin and the like are not needed, and the strength and the reliability of the prepared iron-nickel magnetic core are improved.
Detailed Description
The invention is further illustrated and described below in connection with specific examples.
Example 1:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) The Fe-Ni-Si-Ti-Al material (composition: 57.45wt% of Fe, 40wt% of Ni, 1.5wt% of Si, 1wt% of Ti and 0.05wt% of Al) are added into a high-frequency furnace for smelting, then ultra-high pressure water atomization is carried out, and then air flow classification is carried out, so as to obtain Fe-Ni-Si-Ti-Al powder with the particle size of 3 mu m to 50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and silicon oxide powder with the particle size of 0.1 mu m according to the mass ratio of 1:0.05, then placing the mixture in an argon-water vapor mixed atmosphere (the volume ratio of argon to water vapor is 3:7) for treatment at 400 ℃ for 1h, and then sieving the silicon oxide powder to obtain Fe-Ni-Si-Ti-Al powder (with the particle size of 6 mu m-38 mu m) containing the Si-Ti-Al composite oxide layer;
3) Mixing Fe-Ni-Si-Ti-Al powder containing Si-Ti-Al composite oxide layer with D 50 Particle diameter of 10 μm and D 90 Mixing Fe-Ni powder with the particle size of 26 mu m (the mass ratio of Fe to Ni is 1:1) according to the mass ratio of 1:0.08, then placing in a hydrogen atmosphere and annealing at 600 ℃ for 3 hours to form a Ti-Al composite metal layer on the surface of the Si-Ti-Al composite oxide layer, thus obtaining mixed powder composed of Fe-Ni-Si-Ti-Al powder and Fe-Ni powder containing the Ti-Al composite metal layer;
4) Mixing the mixed powder, silicone resin (silicone resin KR-220L of Xinyue chemical Co., ltd.) and silane coupling agent KH550 at a mass ratio of 1:0.02:0.003, and then at a pressure of 20 ton/cm 2 Pressing and forming, annealing for 0.5h at 650 ℃ in air atmosphere, and annealing for 1h at 750 ℃ in nitrogen atmosphere to obtain the iron-nickel magnetic core.
Example 2:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) The Fe-Ni-Si-Ti-Al material (composition: 51.2wt% of Fe, 45wt% of Ni, 2wt% of Si, 1.5wt% of Ti and 0.3wt% of Al) are added into a high-frequency furnace for smelting, then ultra-high pressure water atomization is carried out, and then air flow classification is carried out, so as to obtain Fe-Ni-Si-Ti-Al powder with the grain diameter of 3 mu m to 50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and alumina powder with the grain diameter of 0.5 mu m according to the mass ratio of 1:0.1, then placing the mixture in an air-water vapor mixed atmosphere (the volume ratio of air to water vapor is 1:9) for treatment at 500 ℃ for 3 hours, and sieving the alumina powder to obtain Fe-Ni-Si-Ti-Al powder (with the grain diameter of 6 mu m-38 mu m) containing a Si-Ti-Al composite oxide layer;
3) Mixing Fe-Ni-Si-Ti-Al powder containing Si-Ti-Al composite oxide layer with D 50 Particle diameter of 12 μm, D 90 Fe-Ni powder with the particle size of 29 mu m (the mass ratio of Fe to Ni is 1:1) is mixed according to the mass ratio of 1:0.13, and then the mixture is placed in a hydrogen atmosphere for annealing at 650 ℃ for 2 hours, and a Ti-Al composite metal layer is formed on the surface of the Si-Ti-Al composite oxide layer, so that mixed powder consisting of Fe-Ni-Si-Ti-Al powder and Fe-Ni powder containing the Ti-Al composite metal layer is obtained;
4) Mixing the mixed powder, silicone resin (silicone resin KR-282 of Xinyue chemical Co., ltd.) and silane coupling agent KH560 at a mass ratio of 1:0.02:0.003, and then at a pressure of 18 ton/cm 2 Pressing and forming, annealing for 1h at 600 ℃ in air atmosphere, and annealing for 2h at 710 ℃ in nitrogen atmosphere to obtain the iron-nickel magnetic core.
Example 3:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) The Fe-Ni-Si-Ti-Al material (composition: 45wt% of Fe, 48wt% of Ni, 3.5wt% of Si, 3wt% of Ti and 0.5wt% of Al) are added into a high-frequency furnace for smelting, then ultra-high pressure water atomization is carried out, and then air current classification is carried out, so as to obtain Fe-Ni-Si-Ti-Al powder with the particle size of 3 mu m-50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and silicon oxide powder with the grain diameter of 1 mu m according to the mass ratio of 1:0.15, then placing the mixture in a nitrogen-water vapor mixed atmosphere (the volume ratio of nitrogen to water vapor is 2:8) for treatment at 600 ℃ for 5 hours, and sieving the silicon oxide powder to obtain Fe-Ni-Si-Ti-Al powder (with the grain diameter of 6 mu m-38 mu m) containing Si-Ti-Al composite oxide layer;
3) Mixing Fe-Ni-Si-Ti-Al powder containing Si-Ti-Al composite oxide layer with D 50 Particle diameter of 15 μm, D 90 Mixing Fe-Ni powder with the particle size of 32 mu m (the mass ratio of Fe to Ni is 1:1) according to the mass ratio of 1:0.21, then placing the mixture in a hydrogen atmosphere and annealing the mixture for 1h at 700 ℃ to form a Ti-Al composite metal layer on the surface of the Si-Ti-Al composite oxide layer, thereby obtaining mixed powder composed of Fe-Ni-Si-Ti-Al powder and Fe-Ni powder containing the Ti-Al composite metal layer;
4) Mixing the powder and silicone resin (silicone resin KR-31 of Xinyue chemical Co., ltd.)1) Mixing with silane coupling agent KH570 according to the mass ratio of 1:0.02:0.003, and then under the pressure of 16 tons/cm 2 Pressing and forming, annealing for 1.5h at 550 ℃ in air atmosphere, and annealing for 3h at 680 ℃ in nitrogen atmosphere to obtain the iron-nickel magnetic core.
Comparative example 1:
the preparation method of the iron-nickel magnetic core comprises the following steps:
will D 50 Fe-Ni powder (the mass ratio of Fe to Ni is 1:1) with a particle size of 20 μm, silicone resin (silicone resin KR-220L from Xinyue chemical industry Co., ltd.), talcum powder and silane coupling agent KH550 are mixed according to the mass ratio of 1:0.02:0.02:0.003, and then the mixture is subjected to pressure of 20 tons/cm 2 Pressing and forming under the condition of (2) and then annealing for 1h at 710 ℃ in hydrogen atmosphere to obtain the iron-nickel magnetic core. Comparative example 2:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) The Fe-Ni-Si-Ti-Al material (composition: 51.2wt% of Fe, 45wt% of Ni, 2wt% of Si, 1.5wt% of Ti and 0.3wt% of Al) are added into a high-frequency furnace for smelting, then ultra-high pressure water atomization is carried out, and then air flow classification is carried out, so as to obtain Fe-Ni-Si-Ti-Al powder with the grain diameter of 3 mu m to 50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder with D 50 Particle diameter of 12 μm, D 90 Fe-Ni powder with the particle size of 29 mu m (the mass ratio of Fe to Ni is 1:1) is mixed according to the mass ratio of 1:0.13, and then the mixture is placed in a hydrogen atmosphere for annealing at 650 ℃ for 2 hours to obtain mixed powder;
3) Mixing the mixed powder, silicone resin (silicone resin KR-282 of Xinyue chemical Co., ltd.) and silane coupling agent KH560 at a mass ratio of 1:0.02:0.003, and then at a pressure of 18 ton/cm 2 Pressing and forming, annealing for 1h at 600 ℃ in air atmosphere, and annealing for 2h at 710 ℃ in nitrogen atmosphere to obtain the iron-nickel magnetic core.
Comparative example 3:
the preparation method of the iron-nickel magnetic core comprises the following steps:
1) The Fe-Ni-Si-Ti-Al material (composition: 51.2wt% of Fe, 45wt% of Ni, 2wt% of Si, 1.5wt% of Ti and 0.3wt% of Al) are added into a high-frequency furnace for smelting, then ultra-high pressure water atomization is carried out, and then air flow classification is carried out, so as to obtain Fe-Ni-Si-Ti-Al powder with the grain diameter of 3 mu m to 50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and alumina powder with the grain diameter of 0.5 mu m according to the mass ratio of 1:0.1, then placing the mixture in an air-water vapor mixed atmosphere (the volume ratio of air to water vapor is 1:9) for treatment at 500 ℃ for 3 hours, and sieving the alumina powder to obtain Fe-Ni-Si-Ti-Al powder (with the grain diameter of 6 mu m-38 mu m) containing a Si-Ti-Al composite oxide layer;
3) Fe-Ni-Si-Ti-Al powder containing Si-Ti-Al composite oxide layer, silicone resin (silicone resin KR-311 of Xinyue chemical industry Co., ltd.) and silane coupling agent KH570 were mixed at a mass ratio of 1:0.02:0.003, and then at a pressure of 18 tons/cm 2 Pressing and forming, annealing for 1h at 600 ℃ in air atmosphere, and annealing for 2h at 710 ℃ in nitrogen atmosphere to obtain the iron-nickel magnetic core.
Performance test:
the results of the performance tests of the ferromagnetic cores of examples 1 to 3 and comparative examples 1 to 3 are shown in the following table:
TABLE 1 results of Performance test of the iron-nickel cores of examples 1 to 3 and comparative examples 1 to 3
| Test item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Flexural Strength (MPa) | 90 | 84 | 87 | 17 | 42 | 27 |
| Permeability of magnetic material | 93 | 91 | 89 | 90 | 82 | 77 |
| Power consumption (kW/m) 3 ) | 210 | 270 | 310 | 510 | 530 | 630 |
Note that:
flexural strength: the size specification of the test sample piece is 35mm multiplied by 4mm multiplied by 3mm, the test is carried out by adopting a universal tester, the test span is 30mm, and the displacement loading rate is 0.5mm/min.
Permeability and power consumption: the test sample piece is annular, the outer diameter is 20mm, the inner diameter is 12mm, the height is 2mm, the winding turns number is N=13 Ts, the initial permeability mu i (1V/1 MHz) of the magnetic ring sample is tested by using a 3260B type LCR tester, and the power consumption is tested by using an IWATCU-SY-8218 type hysteresis loop tester (50 mT/300 kHz).
As can be seen from table 1: compared with the iron-nickel magnetic cores of comparative examples 1-3, the iron-nickel magnetic cores of examples 1-3 have the advantages that the bending strength is greatly improved and the power consumption is greatly reduced under the condition that the magnetic permeability is similar, and the iron-nickel magnetic cores with high bending strength, high magnetic permeability and low power consumption are finally obtained through the improvement and optimization of the material composition and the process flow, so that the iron-nickel magnetic cores are suitable for being used as the magnetic cores of inductors in direct current converters of high-power application scenes.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (10)
1. The preparation method of the iron-nickel magnetic core is characterized by comprising the following steps of:
1) Smelting Fe-Ni-Si-Ti-Al material, performing ultrahigh pressure water atomization, and performing air flow classification to obtain Fe-Ni-Si-Ti-Al powder with the particle size of 3-50 mu m;
2) Mixing Fe-Ni-Si-Ti-Al powder and high temperature resistant oxide powder with the particle size of 0.1-1 mu m, then placing the mixture in an atmosphere containing water vapor for treatment at 400-600 ℃, and then screening out the high temperature resistant oxide powder to obtain Fe-Ni-Si-Ti-Al powder containing a Si-Ti-Al composite oxide layer;
3) Mixing Fe-Ni-Si-Ti-Al powder containing the Si-Ti-Al composite oxide layer with Fe-Ni powder, and then annealing at 600-700 ℃ in a reducing atmosphere to form a Ti-Al composite metal layer on the surface of the Si-Ti-Al composite oxide layer, thereby obtaining mixed powder composed of the Fe-Ni-Si-Ti-Al powder containing the Ti-Al composite metal layer and the Fe-Ni powder;
4) Mixing the mixed powder, the silicone resin and the coupling agent, pressing and forming, performing primary annealing at 550-650 ℃ in air atmosphere, and performing secondary annealing at 680-750 ℃ in protective atmosphere to obtain the iron-nickel magnetic core.
2. The method of manufacturing according to claim 1, characterized in that: the Fe-Ni-Si-Ti-Al material in the step 1) comprises the following components in percentage by mass:
Fe：45％～57.45％；
Ni：40％～48％；
Si：1.5％～3.5％；
Ti：1.0％～3.0％；
Al：0.05％～0.5％。
3. the method of manufacturing according to claim 1, characterized in that: the addition amount of the high-temperature-resistant oxide powder in the step 2) is 5-15% of the mass of the Fe-Ni-Si-Ti-Al powder; the high-temperature-resistant oxide powder in the step 2) is at least one of silicon oxide powder and aluminum oxide powder.
4. A production method according to any one of claims 1 to 3, characterized in that: the atmosphere containing water vapor in the step 2) is composed of at least one of air, nitrogen and argon and water vapor.
5. A production method according to any one of claims 1 to 3, characterized in that: the particle size of the Fe-Ni-Si-Ti-Al powder of the Si-Ti-Al containing composite oxide layer in the step 2) is 6-38 mu m.
6. A production method according to any one of claims 1 to 3, characterized in that: the addition amount of the Fe-Ni powder in the step 3) is 8-21% of the mass of the Fe-Ni-Si-Ti-Al powder containing the Si-Ti-Al composite oxide layer; step 3), the mass percentage of Fe in the Fe-Ni powder is 45% -55%; step 3) D of the Fe-Ni powder 50 The grain diameter is 10 mu m to 15 mu m, D 90 The particle size is 26-32 μm.
7. A production method according to any one of claims 1 to 3, characterized in that: the addition amount of the silicon resin in the step 4) is 1.5-2.5% of the mass of the mixed powder; the addition amount of the coupling agent in the step 4) is 0.2-0.4% of the mass of the mixed powder.
8. A production method according to any one of claims 1 to 3, characterized in that: the treatment time of the step 2) is 1-5 h; step 3), the annealing time is 1-3 h; step 4) the pressing pressure is 16 tons/cm 2 About 20 tons/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the The time of the first annealing in the step 4) is 0.5 h-1.5 h; and 4) the time of the second annealing is 1-3 h.
9. A ferromagnetic core, characterized by being produced by the production method according to any one of claims 1 to 8.
10. An electronic product comprising the ferromagnetic core according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310973786.4A CN116864294B (en) | 2023-08-04 | 2023-08-04 | Iron-nickel magnetic core and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310973786.4A CN116864294B (en) | 2023-08-04 | 2023-08-04 | Iron-nickel magnetic core and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116864294A CN116864294A (en) | 2023-10-10 |
| CN116864294B true CN116864294B (en) | 2023-12-12 |
Family
ID=88228618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310973786.4A Active CN116864294B (en) | 2023-08-04 | 2023-08-04 | Iron-nickel magnetic core and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116864294B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005082853A (en) * | 2003-09-08 | 2005-03-31 | Neomax Co Ltd | Soft magnetic alloy powder, and powder magnetic core using it |
| JP2013089929A (en) * | 2011-10-24 | 2013-05-13 | Tdk Corp | Soft magnetic powder, powder magnetic core, and magnetic device |
| CN106925275A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of Ti-Fe-Ni selective hydrogenation catalysts, preparation method and applications |
| CN114823032A (en) * | 2022-05-19 | 2022-07-29 | 广东泛瑞新材料有限公司 | Alloy magnetic core and preparation method and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10146301C1 (en) * | 2001-09-19 | 2002-07-18 | Krupp Vdm Gmbh | Production of a strip made from an iron-nickel alloy, used for shadow masks in flat monitors and TV screens, comprises continuous or batch-type annealing a strip made from an iron alloy containing nickel, molybdenum and chromium |
| JP4524078B2 (en) * | 2002-05-31 | 2010-08-11 | 富士フイルム株式会社 | Magnetic particle and method for manufacturing the same, and magnetic recording medium and method for manufacturing the same |
| JP7002179B2 (en) * | 2018-01-17 | 2022-01-20 | Ｄｏｗａエレクトロニクス株式会社 | Fe-Ni alloy powder and inductor moldings and inductors using it |
-
2023
- 2023-08-04 CN CN202310973786.4A patent/CN116864294B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005082853A (en) * | 2003-09-08 | 2005-03-31 | Neomax Co Ltd | Soft magnetic alloy powder, and powder magnetic core using it |
| JP2013089929A (en) * | 2011-10-24 | 2013-05-13 | Tdk Corp | Soft magnetic powder, powder magnetic core, and magnetic device |
| CN106925275A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of Ti-Fe-Ni selective hydrogenation catalysts, preparation method and applications |
| CN114823032A (en) * | 2022-05-19 | 2022-07-29 | 广东泛瑞新材料有限公司 | Alloy magnetic core and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| NiCo-MOF、FeNi-MOF-5及其衍生磷化物的制备、表征和电解水活性的研究;郑冰霞;中国优秀硕士学位论文全文数据库 (基础科学辑);B014-384 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116864294A (en) | 2023-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100520993C (en) | Soft magnetic material and dust core | |
| CN102623121B (en) | Method for manufacturing iron-silicon material and Mu-90 iron-silicon magnetic powder core | |
| WO2019029146A1 (en) | Method for producing metal soft magnetic powder core resistant to high temperature heat treatment | |
| CN109680210B (en) | Preparation method of mu = 150-250 sendust soft magnetic powder core | |
| CN102013313A (en) | Manufacturing method of iron-silicon-aluminum magnetic powder core with high magnetic conductivity | |
| CN112530655A (en) | Low-power-consumption soft magnetic alloy material and preparation method and application thereof | |
| JP2019179919A (en) | Method for manufacturing powder-compact magnetic core | |
| JP2010272604A (en) | Soft magnetic powder and dust core using the same, and inductor and method of manufacturing the same | |
| CN109103010B (en) | Material and method for improving density of magnetic powder core insulating layer | |
| CN106504846A (en) | A kind of ferrum ferrosilicon oxysome composite cores and preparation method thereof | |
| JP4863628B2 (en) | Method for producing Mg-containing oxide film-coated soft magnetic metal powder and method for producing composite soft magnetic material using this powder | |
| CN113380483B (en) | Composite soft magnetic material and preparation method thereof | |
| CN116864294B (en) | Iron-nickel magnetic core and preparation method and application thereof | |
| CN106205939A (en) | A kind of flexible magnetic ferrite magnetic core material | |
| CN106205938A (en) | A kind of nano magnetic core material | |
| WO2019029145A1 (en) | Silicone resin | |
| CN116825468B (en) | Iron-cobalt magnetic core and preparation method and application thereof | |
| CN113451039B (en) | FeSi-based water atomized Fe-Si-Cr soft magnetic powder core and preparation method thereof | |
| CN104036903A (en) | Preparation method of Fe-Si-Ni magnetic powder core | |
| CN108630372B (en) | Iron-silicon composite magnetic powder core and preparation method thereof | |
| JP2003049203A (en) | Nickel - iron alloy powder, nickel - iron - molybdenum alloy powder, and method for manufacturing iron core | |
| JP2003147404A (en) | Iron-cobalt alloy powder | |
| WO2019029147A1 (en) | Metal soft magnetic powder core resistant to high temperature heat treatment | |
| CN116612975A (en) | Preparation method of high-frequency low-loss iron-based soft magnetic composite material | |
| JP4561988B2 (en) | Method for producing soft magnetic metal powder for soft magnetic metal dust core, and soft magnetic metal dust core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |