CN109994297A - A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof - Google Patents
A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof Download PDFInfo
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- CN109994297A CN109994297A CN201910300724.0A CN201910300724A CN109994297A CN 109994297 A CN109994297 A CN 109994297A CN 201910300724 A CN201910300724 A CN 201910300724A CN 109994297 A CN109994297 A CN 109994297A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
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- 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
Abstract
The present invention relates to a kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof.Its technical solution is: according to Fe3O4Powder: the mass ratio of FeSiAl powder is 2~15: 100 ingredients, and mixing, 4~12h of ball milling, obtains FeSiAl/Fe under conditions of 100~300 revs/min3O4Nucleocapsid particles；By FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, vacuum I's or protective atmosphere I under conditions of be warming up to 800~1300 DEG C, be sintered 0.5~5h, obtain sintered body；Sintered body is placed in heat-treatment furnace, 500~1200 DEG C are warming up under conditions of vacuum II or protective atmosphere II, is heat-treated 0.5~5h, the Fe with core-shell structure is made3Si/Al2O3Composite magnetic powder core.The present invention has the characteristics that material loss is few, environmental-friendly, production cost is low and preparation process is simple, and made insulating articles layer is uniform, resistivity is high, magnetic loss is low, saturation magnetization is high low with coercivity.
Description
Technical field
The invention belongs to Fe3Si/Al2O3Composite magnetic powder core technical field.More particularly to a kind of with core-shell structure
Fe3Si/Al2O3Composite magnetic powder core and preparation method thereof.
Background technique
Iron sial because of its saturation magnetization, high resistivity, low magnetostriction and relatively low loss with higher,
Be widely used in communication, uninterruptible power supply (UPS), solid laser power source, photovoltaic generating system and LED driving etc. fields.
The electromagnetic performance of iron sial is influenced by series of factors, such as the partial size of ferromagnetic particle, purity, the class of insulating wrapped
Type and content, drawing method, briquetting pressure, heat-treating atmosphere and temperature etc..Wherein, density, magnetic conductance of the insulating wrapped to magnet
Rate, resistivity, eddy-current loss and mechanical strength have great influence, are modern electronic equipments to miniaturization, functionalization direction
The hot research topic of development.Insulating wrapped is broadly divided into organic coating and two kinds of inorganic coating.
The machine method for coating of common are is that magnetic-particle and organic coating material are mixed in the organic solvents such as acetone or alcohol
In, it is dry after being sufficiently stirred, soft magnetic composite powder is obtained, is further compacted obtain composite magnetic powder core, easy to operate, cost
Lower and covered effect is preferable.However, the heat resistances such as existing organic coating material such as phenolic resin and epoxy resin are poor,
200 DEG C or more can not carry out high-temperature heat treatment and eliminate high temperature residual stress, affect magnetic property.And organic material cladding answer
It closes powder core to generate heat in long-term work because of eddy-current loss, will lead to organic insulator aging, or even thermal decomposition, to weaken
The insulating properties of composite magnetic powder core increases eddy-current loss and influences the stability of composite magnetic powder core.Therefore, inorganic coating material with
Its excellent thermal stability and electrical insulating property and be concerned.
Common inorganic coating material mainly has phosphate, oxide (Al2O3, MgO and SiO2Deng) and soft magnetic ferrite,
Common method for coating by magnetic-particle and inorganic insulation covering material and is glued by stirring or the physical methods such as ball milling
Agent mixing is tied, then through high-pressure molding, finally obtains composite magnetic powder core.In addition, there are also the chemistry claddings such as co-precipitation and collosol and gel
Technique.The above method for coating, most important purpose be to carry out magnetic-particle insulating wrapped, and how by each magnetic-particle
Uniform and fine and close cladding is got up, and realizes effective insulation between magnetic-particle, then seems insufficient.
For this purpose, scientific and technical personnel have carried out extensive research: such as " a kind of metal soft magnetic powder core inorganic insulation bonding agent and its system
Preparation Method " (CN200710099337.2) patented technology directly mixes magnetic-particle with the inorganic oxide being electrically insulated, though system
Preparation Method is simple, but the effective insulation being difficult to realize between magnetic-particle, and loss reduction is limited, and will cause inorganic coating material
Reunite, deteriorates magnetic property；Wang Jian et al. (FeSiAl/SiO of the core-shell structure such as Wang Jian, Wu Chaoyang2Particle and tunable dielectric layer
The Fe of thickness3Si/Al2O3Soft-magnetic composite core Materials Science and Engineering B, 2015.08) though Al is coated in particle surface2O3, but make
Standby process is complicated, the bad material loss of insulation effect is more and at high cost；A kind of " iron-base soft magnetic alloy powder method for coating and multiple
Close preparation process for magnetic powder core " (CN201510602786.9) patented technology, oxide layer is obtained by high-temperature oxydation, then pickling is gone
Iron oxide leaves containing SiO2、Al2O3And Cr2O3Etc. oxide layers, finally add binder and lubricant and be compacted, obtained
Composite magnetic powder core.Though the more uniform magnetic property of the insulating layer of gained composite magnetic powder core is preferable, preparation process is complicated, operates not
Easily, energy consumption is larger and material loss is more, is unfavorable for largely preparing.
Summary of the invention
The present invention is directed to overcome prior art defect, and it is an object of the present invention to provide a kind of material loss it is few, it is environmental-friendly, be produced into
This low and preparation process simply has the Fe of core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core；With the preparation method
The Fe with core-shell structure of preparation3Si/Al2O3Composite magnetic powder core insulating layer is uniform, resistivity is high, magnetic loss is low, saturated magnetization
Intensity height and coercivity are low.
To achieve the above object, the step of the technical solution adopted by the present invention is:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 2~15: 100, by the Fe3O4Powder and described
The mixing of FeSiAl powder, then 4~12h of ball milling under conditions of 100~300 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid
Grain.
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, under conditions of vacuum I or protective atmosphere
It is warming up to 800~1300 DEG C under conditions of I, is sintered 0.5~5h, obtains sintered body.
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, is risen under conditions of vacuum II or under conditions of protective atmosphere II
Temperature is heat-treated 0.5~5h to 500~1200 DEG C, and the Fe with core-shell structure is made in furnace cooling3Si/Al2O3Composite magnetic powder
Core.
The Fe3O4The partial size of powder is 1~60 μm；Fe3O4Purity >=99.8wt% of powder.
The partial size of the FeSiAl alloy powder is 1~200 μm；In FeSiAl alloy powder: Al content be 5.4~
5.6wt%, Si content are 9.4~9.6wt%, and Fe content is 84.8~85.2wt%.
The vacuum degree of the vacuum I is 10-2~102Pa。
The vacuum degree of the vacuum II is 10-2~102Pa。
The protective atmosphere I is nitrogen or is argon gas.
The protective atmosphere II is nitrogen or is argon gas.
Due to the adoption of the above technical scheme, the present invention has following advantages compared with prior art:
(1) of the invention by FeSiAl alloy powder and Fe3O4Powder mixing, ball milling, it is FeSiAl alloy and outer for obtaining kernel
Layer is Fe3O4The FeSiAl/Fe of core-shell structure3O4Nucleocapsid particles；Again by gained FeSiAl/Fe3O4Nucleocapsid particles carry out high temperature burning
Knot and heat treatment, utilize Fe under the diffusion and high temperature of high temperature3O4With the chemical reaction of simple substance Al, obtain with nucleocapsid knot
The Fe of structure3Si/Al2O3Composite magnetic powder core.The raw materials used in the present invention is only FeSiAl alloy powder and Fe3O4Powder does not add and appoints
What binder and lubricant etc., not only considerably reduces material loss and environmental pollution, and ball milling process is simple to operation.Cause
And production cost is low, preparation process is simple and reproducible, has a good application prospect.
(2) Fe prepared by the present invention with core-shell structure3Si/Al2O3Composite magnetic powder core is inorganic material, chemical stabilization
Property good and heat-resisting quantity it is strong, high-temperature heat treatment forms new core-shell structure, makes the prepared Fe with core-shell structure3Si/
Al2O3Composite magnetic powder core saturation magnetization is higher low with coercivity.
(3) Fe prepared by the present invention with core-shell structure3Si/Al2O3Fe in composite magnetic powder core3Between Si alloying pellet
For Al2O3Clad, Al2O3Clad is uniform and resistivity is high, can effectively limit the generation being vortexed between particle, and magnetic loss is low.
(4) present invention by adjust the technological parameter of mechanical milling process, briquetting pressure, the temperature in high-temperature sintering process and when
Between, the parameters such as temperature and time in heat treatment process, Effective Regulation can be carried out to the thickness of clad, so that different magnetic be made
The Fe with core-shell structure of performance3Si/Al2O3Composite magnetic powder core.
Therefore, the present invention has the characteristics that material loss is few, environmental-friendly, production cost is low and preparation process is simple, institute
The Fe with core-shell structure of preparation3Si/Al2O3Composite magnetic powder core insulating layer is uniform, resistivity is high, magnetic loss is low, saturated magnetization
Intensity height and coercivity are low.
Detailed description of the invention
Fig. 1 is a kind of Fe with core-shell structure prepared by the present invention3Si/Al2O3The SEM of composite magnetic powder core schemes.
Specific embodiment
The invention will be further described with specific embodiment with reference to the accompanying drawing, not to the limit of its protection scope
System.
It is first that technical parameter Unify legislation involved in present embodiment is as follows to avoid repeating, in embodiment not
It repeats again:
The Fe3O4The partial size of powder is 1~60 μm；Fe3O4Purity >=99.8wt% of powder.
The partial size of the FeSiAl alloy powder is 1~200 μm；In FeSiAl alloy powder: Al content be 5.4~
5.6wt%, Si content are 9.4~9.6wt%, and Fe content is 84.8~85.2wt%.
Embodiment 1
A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof.Preparation side described in the present embodiment
The step of method, is:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 2~5: 100, by the Fe3O4Powder and the FeSiAl
Powder mixing, then 4~6h of ball milling under conditions of 100~150 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid particles.
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, are warming up under conditions of protective atmosphere I
800~900 DEG C, it is sintered 0.5~2h, obtains sintered body.
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, is warming up to 500~700 DEG C under conditions of protective atmosphere II,
It is heat-treated 0.5~2h, the Fe with core-shell structure is made in furnace cooling3Si/Al2O3Composite magnetic powder core.
The protective atmosphere I and protective atmosphere II is nitrogen.
Embodiment 2
A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof.Preparation side described in the present embodiment
The step of method, is:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 5~8: 100, by the Fe3O4Powder and the FeSiAl
Powder mixing, then 6~8h of ball milling under conditions of 150~200 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid particles.
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, are warming up under conditions of protective atmosphere I
900~1050 DEG C, it is sintered 2~3h, obtains sintered body.
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, is warming up to 700~850 DEG C under conditions of protective atmosphere II,
It is heat-treated 2~3h, the Fe with core-shell structure is made in furnace cooling3Si/Al2O3Composite magnetic powder core.
The protective atmosphere I and protective atmosphere II is argon gas.
Embodiment 3
A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof.Preparation side described in the present embodiment
The step of method, is:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 8~11: 100, by the Fe3O4Powder and described
The mixing of FeSiAl powder, then 8~10h of ball milling under conditions of 200~250 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid
Grain.
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, under conditions of vacuum I under be warming up to 1050
~1200 DEG C, it is sintered 3~4h, obtains sintered body.
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, 850~1000 DEG C are warming up under conditions of vacuum II, heat treatment
The Fe with core-shell structure is made in 3~4h, furnace cooling3Si/Al2O3Composite magnetic powder core.
The vacuum degree of the vacuum I and the vacuum II are 10-2~1Pa.
Embodiment 4
A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof.Preparation side described in the present embodiment
The step of method, is:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 11~15: 100, by the Fe3O4Powder and described
The mixing of FeSiAl powder, then 10~12h of ball milling under conditions of 250~300 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid
Grain.
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, it is warming up to 1200 under conditions of vacuum I~
1300 DEG C, it is sintered 4~5h, obtains sintered body.
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, is warming up to 1000~1200 DEG C under conditions of vacuum II, at heat
4~5h is managed, the Fe with core-shell structure is made in furnace cooling3Si/Al2O3Composite magnetic powder core.
The vacuum degree of the vacuum I and the vacuum II are 1~102Pa
Present embodiment has following advantages compared with prior art:
(1) of the invention by FeSiAl alloy powder and Fe3O4Powder mixing, ball milling, it is FeSiAl alloy and outer for obtaining kernel
Layer is Fe3O4The FeSiAl/Fe of core-shell structure3O4Nucleocapsid particles；Again by gained FeSiAl/Fe3O4Nucleocapsid particles carry out high temperature burning
Knot and heat treatment, utilize Fe under the diffusion and high temperature of high temperature3O4With the chemical reaction of simple substance Al, obtain with nucleocapsid knot
The Fe of structure3Si/Al2O3Composite magnetic powder core.The raw materials used in the present invention is only FeSiAl alloy powder and Fe3O4Powder does not add and appoints
What binder and lubricant etc., not only considerably reduces material loss and environmental pollution, and ball milling process is simple to operation.Cause
And production cost is low, preparation process is simple and reproducible, has a good application prospect.
(2) Fe prepared by the present invention with core-shell structure3Si/Al2O3Composite magnetic powder core is inorganic material, chemical stabilization
Property good and heat-resisting quantity it is strong, high-temperature heat treatment forms new core-shell structure, makes the prepared Fe with core-shell structure3Si/
Al2O3Composite magnetic powder core saturation magnetization is higher low with coercivity.
(3) Fe of present embodiment preparation3Si/Al2O3Fe in composite magnetic powder core3It is Al between Si alloying pellet2O3
Clad, as shown in FIG. 1, FIG. 1 is a kind of Fe prepared by embodiment 33The SEM of Si composite magnetic powder core schemes (backscatter images), from
Fig. 1 is it can be seen that Fe3Si alloying pellet is by Al2O3Clad separates, and clad is uniform and resistivity is high.Al2O3Clad can have
Effect ground limits intergranular eddy-current loss, causes magnetic loss extremely low.
(4) present invention by adjust the technological parameter of mechanical milling process, briquetting pressure, the temperature in high-temperature sintering process and when
Between, the parameters such as temperature and time in heat treatment process, Effective Regulation can be carried out to the thickness of clad, so that different magnetic be made
The Fe with core-shell structure of performance3Si/Al2O3Composite magnetic powder core.
Therefore, the present invention has the characteristics that material loss is few, environmental-friendly, production cost is low and preparation process is simple, institute
The Fe with core-shell structure of preparation3Si/Al2O3Composite magnetic powder core insulating layer is uniform, resistivity is high, magnetic loss is low, saturated magnetization
Intensity height and coercivity are low.
Claims (8)
1. a kind of Fe with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, it is characterised in that the preparation method
The step of be:
The first step, FeSiAl/Fe3O4The preparation of nucleocapsid particles
According to Fe3O4Powder: the mass ratio of FeSiAl powder is 2~15: 100, by the Fe3O4Powder and the FeSiAl powder
Mixing, then 4~12h of ball milling under conditions of 100~300 revs/min, obtains FeSiAl/Fe3O4Nucleocapsid particles；
Second step, sintering
By the FeSiAl/Fe3O4Nucleocapsid particles are placed in high temperature sintering furnace, the vacuum I under conditions of or protective atmosphere I
Under the conditions of be warming up to 800~1300 DEG C, be sintered 0.5~5h, obtain sintered body；
Third step, heat treatment
The sintered body is placed in heat-treatment furnace, is warming up under conditions of vacuum II or under conditions of protective atmosphere II
500~1200 DEG C, it is heat-treated 0.5~5h, the Fe with core-shell structure is made in furnace cooling3Si/Al2O3Composite magnetic powder core.
2. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
It is the Fe3O4The partial size of powder is 1~60 μm；Fe3O4Purity >=99.8wt% of powder.
3. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
The partial size for being the FeSiAl alloy powder is 1~200 μm；In FeSiAl alloy powder: Al content is 5.4~5.6wt%,
Si content is 9.4~9.6wt%, and Fe content is 84.8~85.2wt%.
4. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
The vacuum degree for being the vacuum I is 10-2~102Pa。
5. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
The vacuum degree for being the vacuum II is 10-2~102Pa。
6. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
It is that the protective atmosphere I is nitrogen or is argon gas.
7. the Fe according to claim 1 with core-shell structure3Si/Al2O3The preparation method of composite magnetic powder core, feature
It is that the protective atmosphere II is nitrogen or is argon gas.
8. a kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core, it is characterised in that described with core-shell structure
Fe3Si/Al2O3Composite magnetic powder core be any one of according to claim 1~7 described in the Fe with core-shell structure3Si/
Al2O3With the Fe of core-shell structure prepared by the preparation method of composite magnetic powder core3Si/Al2O3Composite magnetic powder core.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931235A (en) * | 2019-10-30 | 2020-03-27 | 宁波市普盛磁电科技有限公司 | Preparation method of high-temperature heat treatment iron-silicon material |
| CN112712991A (en) * | 2020-12-22 | 2021-04-27 | 武汉科技大学 | FeSiAl/Ni composite magnetic powder core and preparation method thereof |
| CN116825466A (en) * | 2023-08-16 | 2023-09-29 | 中南大学 | FeSiAl soft magnetic composite material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601417A (en) * | 2016-12-26 | 2017-04-26 | 安徽工业大学 | Core-shell-structured iron silicon soft magnetic composite iron core and preparation method therefor |
-
2019
- 2019-04-15 CN CN201910300724.0A patent/CN109994297A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601417A (en) * | 2016-12-26 | 2017-04-26 | 安徽工业大学 | Core-shell-structured iron silicon soft magnetic composite iron core and preparation method therefor |
Non-Patent Citations (1)
| Title |
|---|
| FAN LUO: "Ultra-low inter-particle eddy current loss of Fe3Si/Al2O3 soft magnetic composites evolved from FeSiAl/Fe3O4 core-shell particles", 《JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110931235A (en) * | 2019-10-30 | 2020-03-27 | 宁波市普盛磁电科技有限公司 | Preparation method of high-temperature heat treatment iron-silicon material |
| CN110931235B (en) * | 2019-10-30 | 2021-09-24 | 宁波市普盛磁电科技有限公司 | Preparation method of high-temperature heat treatment iron-silicon material |
| CN112712991A (en) * | 2020-12-22 | 2021-04-27 | 武汉科技大学 | FeSiAl/Ni composite magnetic powder core and preparation method thereof |
| CN116825466A (en) * | 2023-08-16 | 2023-09-29 | 中南大学 | FeSiAl soft magnetic composite material and preparation method thereof |
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