CN109273235A - Double-shell insulation coating method for metal soft magnetic composite material - Google Patents
Double-shell insulation coating method for metal soft magnetic composite material Download PDFInfo
- Publication number
- CN109273235A CN109273235A CN201811125037.1A CN201811125037A CN109273235A CN 109273235 A CN109273235 A CN 109273235A CN 201811125037 A CN201811125037 A CN 201811125037A CN 109273235 A CN109273235 A CN 109273235A
- Authority
- CN
- China
- Prior art keywords
- powder
- magnetic
- composite material
- magnetic powder
- layer
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000000576 coating method Methods 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000009413 insulation Methods 0.000 title claims abstract description 5
- 239000006247 magnetic powder Substances 0.000 claims abstract description 60
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000003980 solgel method Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 238000002161 passivation Methods 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- -1 iron silicon aluminum Chemical compound 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims description 4
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims description 4
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000011863 silicon-based powder Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical group [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims description 2
- VAWNDNOTGRTLLU-UHFFFAOYSA-N iron molybdenum nickel Chemical compound [Fe].[Ni].[Mo] VAWNDNOTGRTLLU-UHFFFAOYSA-N 0.000 claims description 2
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- XEVZIAVUCQDJFL-UHFFFAOYSA-N [Cr].[Fe].[Si] Chemical compound [Cr].[Fe].[Si] XEVZIAVUCQDJFL-UHFFFAOYSA-N 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 31
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 8
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 4
- 239000007767 bonding agent Substances 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 11
- 238000005253 cladding Methods 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 229960000935 dehydrated alcohol Drugs 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
- 239000002966 varnish Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- FIPWRIJSWJWJAI-UHFFFAOYSA-N Butyl carbitol 6-propylpiperonyl ether Chemical compound C1=C(CCC)C(COCCOCCOCCCC)=CC2=C1OCO2 FIPWRIJSWJWJAI-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960004756 ethanol Drugs 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of bivalve of metal soft magnetic composite material layer insulating coating methods, coat one layer of inorganic salts/oxide composite insulation layer on metal magnetic surface by sol gel process.Wherein, internal layer inorganic salts improve insulating layer bond strength and green density as buffer layer；Outer oxide object can effectively hinder the decomposition of internal layer inorganic salts when high annealing, improve the thermal stability of insulating layer.Repressed molding, high-temperature heat treatment and spraying process, obtain soft-magnetic composite material.The present invention carries out insulating wrapped to metal magnetic using sol-gal process, the associativity of obtained compound coating layer and magnetic powder is good, thermal stability is high, addition bonding agent is not needed, reduce production cost, all it is simultaneously inorganic coating object, there is higher electric resistivity, effectively reduce the core loss of soft-magnetic composite material.
Description
Technical field
The present invention relates to a kind of bivalve of the preparation technical field of magnetic material more particularly to metal soft magnetic composite material layers
Insulating wrapped processing method.
Background technique
Soft-magnetic composite material (also referred to as powder core) is recycled in one layer of dielectric of metal magnetic coated with uniform
Magnetic powder is pressed into various shape by powder metallurgical technique.Since it is with high magnetic permeability, high saturation magnetic flux density and low magnetic
Core loss has a wide range of applications in the electron electric powers such as transformer, sensor, choking-winding field.But in practical applications,
Higher eddy-current loss caused by low-resistivity limits its frequency applications, it usually needs coats one layer of high resistance on magnetic powder surface
Rate while the good insulating layer of thermal stability, barrier vortex, to reduce core loss.
Based on current insulating wrapped technique is coated with inorganic matter.Wherein phosphorus acid passivation technique is since it is easy to be at low cost
Feature is most often applied method for coating in industrial production, studies have found that Phosphate coating layer can occur in high annealing
Decomposition causes drastically reducing for resistivity, increases core loss.In order to find the phosphatic dielectric of substitution, thermal stability is good
Oxide include SiO2、MgO、Al2O3With ferrite etc. in succession by developmental research, but oxide itself have it is very high crisp
Property, poor with the associativity of magnetic powder matrix, coating film is easy cracking and even falls off, and covered effect is undesirable.
The Chinese invention patent of Patent No. 201510524515.6 mixes phosphoric acid solution with high molecular surfactant
Magnetic powder is passivated, powder compact density is improved, but the heat resisting temperature of passivation layer is not high, can not carry out high annealing heat
The internal stress generated in pressing process is sufficiently eliminated in processing, therefore core loss is higher.
The Chinese invention patent of Patent No. 201710593950.3 is passivated place to magnetic powder using the aqueous solution of phosphoric acid
Reason, in order to improve thermal stability, and mixed oxide carries out insulating wrapped, the insulating coating bond strength of this method preparation
Difference, cladding are uneven.
Summary of the invention
It is an object of the invention to overcome the shortcomings of that insulating film heat resisting temperature is not high in current passivation technology, provides a kind of gold
Belong to the bivalve layer insulating coating method of soft-magnetic composite material.It is exhausted that one layer of fine and close oxide is uniformly coated using sol gel process
Edge layer, had not only had good bond strength but also the thermal stability having had can further decrease core loss, together with high-temperature thermal annealing
When keep preferable magnetic property.
The bivalve layer insulating coating method of metal soft magnetic composite material includes the following steps:
1) it chooses the metal magnetic that granularity is 200-400 mesh and carries out grain size proportion, the mass percent of mixed-powder are as follows:-
200~+300 mesh account for 50~80%, -300~+400 mesh and account for 20~50%, and remaining is -400 mesh；The metal magnetic is iron
One of powder, iron silicon powder, iron aluminum silicon powder, iron silicochromium powder, iron cobalt powder, iron nickel powder, iron nickel molybdenum powder and Fe-based amorphous powder are a variety of；
2) proportioned metal magnetic is subjected to insulation processing with passivator, is stirred under 50~90 DEG C of water bath conditions dry
It is dry；Then insulating wrapped is carried out to magnetic powder using sol-gal process, dissolution accounts for ethyl alcohol weight 5%~15% in dehydrated alcohol
Aluminium isopropoxide, instilling nitric acid and reconciling solution ph is 4~6, and 30~60min of uniform stirring obtains colloidal sol, takes 10~30mL colloidal sol
In magnetic powder after being added to passivation, suspension is obtained after 10~30min is mixed；2~5mL deionized water is instilled dropwise,
Stirring under 50~70 DEG C of water bath conditions is until be completely dried, the magnetic powder after obtaining compound coating；It is added into the magnetic powder after cladding
After lubricant, magnetic powder to be formed is obtained；
3) magnetic powder to be formed is pressed, compacting pressure is 500~2000MPa, and 10~20s of dwell time is obtained
To magnet ring；
4) protective atmosphere is made using nitrogen or argon gas and annealing heat-treatment is carried out to magnet ring, heat treatment temperature is 400~750
DEG C, 30~120min of soaking time；
5) one layer of epoxy resin insulating varnish is sprayed in step 4) treated magnet ring surface to get soft magnetic metal composite wood is arrived
Expect finished product.
Preferably, the metal magnetic weight is 10~30g, and dehydrated alcohol quality is 20~50g in the colloidal sol.
Preferably, the passivator be phosphoric acid, chromic acid it is one or more, additive amount account for magnetic powder gross weight 0.4%~
2.0%.
Preferably, the lubricant is one of zinc stearate, barium stearate, calcium stearate or molybdenum disulfide or more
Kind.
Soft-magnetic composite material prepared by the present invention carries out in-situ passivation to magnetic powder and forms the high inorganic salts of one layer of bond strength
Layer recycles sol-gal process in one layer of fine and close oxidation film of outer layer homoepitaxial, does not need addition bonding agent, reduce industry
While production cost, green density is not only improved, but also improve thermal stability, effectively reduce core loss.
Detailed description of the invention
Fig. 1 is the iron-silicon-aluminum soft magnet composite material and traditional phosphorus acid passivation and single layer of bivalve layer insulating coating method preparation
The magnetic loss (test condition 100mT) of the sample of aluminium oxide preparation.
Fig. 2 is the iron-silicon-aluminum soft magnet composite material and traditional phosphorus acid passivation and single layer of bivalve layer insulating coating method preparation
The Effective permeability (test condition 100mT) of the sample of aluminium oxide preparation.
Specific embodiment
Soft-magnetic composite material of the invention is to recycle sol gel process in external sheath one to after magnetic powder in-situ passivation
Soft-magnetic composite material is made after then adding lubricant, compression moulding, annealing heat-treatment and spraying in layer oxide.It ties below
Closing drawings and examples, the present invention is described in further detail.It is understood that specific embodiment described herein
It is used only for explaining the present invention rather than limiting the invention.
Embodiment 1
15g iron powder (i.e. metal magnetic) is taken, wherein granularity is that the iron powder of -200~+300 mesh accounts for the 60% of gross mass, -
The iron powder of 300~+400 mesh accounts for the 30% of gross mass, and iron powders more than 400 mesh accounts for the 10% of gross mass.Using phosphoric acid to proportion
Good iron powder is passivated, and drying is stirred under 60 DEG C of water bath conditions, the magnetic powder after being passivated, phosphoric acid quality accounts for iron powder gross weight
0.5%.Insulating wrapped is carried out to magnetic powder after passivation using sol-gal process, 6g aluminium isopropoxide is dissolved in 40g dehydrated alcohol,
Instilling nitric acid and reconciling solution pH value is 6, and uniform stirring 50min obtains colloidal sol, and 10mL colloidal sol is taken to be added to the magnetic powder after passivation
In, suspension is obtained after 10min is mixed.2mL deionized water is instilled dropwise, and the stirring under 50 DEG C of water bath conditions is until completely
It is dry, the magnetic powder after obtaining compound coating.The zinc stearate of magnetic powder gross weight 0.5% after accounting for cladding is added into the magnetic powder after cladding
And be uniformly mixed, obtain magnetic powder to be formed.Magnetic powder to be formed is pressed into outer diameter 23.4mm, internal diameter under the pressure of 700MPa
14.4mm, the magnet ring of high 8.8mm, dwell time 15s.Protective atmosphere is employed nitrogen as, magnet ring is placed in 550 DEG C of environment and is kept the temperature
60min sprays one layer of epoxy resin insulating varnish on magnet ring surface, obtains iron-based soft magnetic composite material.
Electromagnetic performance test is carried out to the soft-magnetic composite material of preparation, specific as follows:
(1) soft-magnetic composite material magnetic conductivity: 87；
(2) DC stacked performance: when 1kHz, H=100Oe, LH/LO=57.2%；
(3) under the conditions of 100kHz/1V, quality factor q=62；
(4) soft-magnetic composite material is lost: when 50kHz/100mT, PCV=810.3mW/cm3。
Embodiment 2
20g iron aluminum silicon powder is taken, wherein granularity is that the magnetic powder of -200~+300 mesh accounts for the 50% of gross mass, -300~+400
Purpose magnetic powder accounts for the 40% of gross mass, and magnetic powders more than 400 mesh accounts for the 10% of gross mass.Using chromic acid to proportioned iron sial
Powder is passivated, and stirs drying under 50 DEG C of water bath conditions, the magnetic powder after being passivated, chromic acid quality accounts for magnetic powder gross weight
0.8%.Insulating wrapped is carried out to magnetic powder after passivation using sol-gal process, 4g aluminium isopropoxide, drop are dissolved in 30g dehydrated alcohol
Entering nitric acid to reconcile solution ph is 4, and uniform stirring 30min obtains colloidal sol, in the magnetic powder after taking 25mL colloidal sol to be added to passivation,
Suspension is obtained after 20min is mixed, instills 4mL deionized water dropwise, stirring is until completely dry under 70 DEG C of water bath conditions
It is dry, the magnetic powder after obtaining compound coating.The barium stearate of magnetic powder gross weight 1.2% after accounting for cladding is added into the magnetic powder after cladding simultaneously
It is uniformly mixed, obtains magnetic powder to be formed.Magnetic powder to be formed is pressed into outer diameter 23.4mm, internal diameter under the pressure of 1800MPa
14.4mm, the magnet ring of high 8.8mm, dwell time 20s.Protective atmosphere is employed nitrogen as, magnet ring is placed in 750 DEG C of environment and is kept the temperature
50min sprays one layer of epoxy resin insulating varnish on magnet ring surface, obtains iron-silicon-aluminum soft magnet composite material.
It will be seen from figure 1 that the magnetic loss of the iron-silicon-aluminum soft magnet composite material of bivalve layer insulating coating method preparation is obvious
The sample standby lower than phosphorus acid passivation and mono-layer oxidized aluminum, effectively reduces core loss；Bivalve layer is exhausted as can be seen from Figure 2
The Effective permeability of the iron-silicon-aluminum soft magnet composite material of edge method for coating preparation is higher than the standby sample of mono-layer oxidized aluminum, but is lower than
The sample of phosphorus acid passivation can reduce its bond strength this is because phosphorus acid passivation and magnetic powder bond strength are high after oxide is compound,
But still it is maintained at higher level.
Electromagnetic performance test is carried out to the soft-magnetic composite material of preparation, specific as follows:
(1) soft-magnetic composite material magnetic conductivity: 124；
(2) DC stacked performance: when 1kHz, H=100Oe, LH/LO=38.2%；
(3) under the conditions of 100kHz/1V, quality factor q=72；
(4) soft-magnetic composite material is lost: when 50kHz/100mT, PCV=250.4mW/cm3。
Embodiment 3
10g iron nickel powder is taken, wherein granularity is that the magnetic powder of -200~+300 mesh accounts for the 70% of gross mass, -300~+400 mesh
Magnetic powder account for the 25% of gross mass, magnetic powders more than 400 mesh accounts for the 5% of gross mass.Using phosphoric acid to proportioned iron nickel powder into
Row passivation, stirs drying under 80 DEG C of water bath conditions, the magnetic powder after being passivated, phosphoric acid quality accounts for the 1.0% of magnetic powder gross weight.Benefit
Insulating wrapped is carried out to magnetic powder after passivation with sol-gal process, 3g aluminium isopropoxide is dissolved in 25g dehydrated alcohol, instills nitric acid tune
Solving solution ph is 5, and uniform stirring 20min obtains colloidal sol, in the magnetic powder after taking 15mL colloidal sol to be added to passivation, is mixed
Suspension is obtained after 15min.3mL deionized water is instilled dropwise, and stirring is obtained up to being completely dried under 60 DEG C of water bath conditions
Magnetic powder after compound coating.The calcium stearate of magnetic powder gross weight 0.8% after accounting for cladding is added into the magnetic powder after cladding and mixes equal
It is even, obtain magnetic powder to be formed.Magnetic powder to be formed is pressed into outer diameter 23.4mm, internal diameter 14.4mm under the pressure of 1300MPa, it is high
The magnet ring of 8.8mm, dwell time 10s.Protective atmosphere is made using argon gas, magnet ring is placed in 670 DEG C of environment and keeps the temperature 70min,
Magnet ring surface sprays one layer of epoxy resin insulating varnish, obtains the Ni-based soft-magnetic composite material of iron.
Electromagnetic performance test is carried out to the soft-magnetic composite material of preparation, specific as follows:
(1) soft-magnetic composite material magnetic conductivity: 128；
(2) DC stacked performance: when 1kHz, H=100Oe, LH/LO=59.3%；
(3) under the conditions of 100kHz/1V, quality factor q=67；
(4) soft-magnetic composite material is lost: when 50kHz/100mT, PCV=280.6mW/cm3。
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125037.1A CN109273235B (en) | 2018-09-26 | 2018-09-26 | Double-shell insulation coating method for metal soft magnetic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125037.1A CN109273235B (en) | 2018-09-26 | 2018-09-26 | Double-shell insulation coating method for metal soft magnetic composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109273235A true CN109273235A (en) | 2019-01-25 |
| CN109273235B CN109273235B (en) | 2021-06-04 |
Family
ID=65197751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811125037.1A Expired - Fee Related CN109273235B (en) | 2018-09-26 | 2018-09-26 | Double-shell insulation coating method for metal soft magnetic composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109273235B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029126A (en) * | 2019-12-12 | 2020-04-17 | 安徽工业大学 | All-inorganic high-temperature-resistant insulating bonding method for iron-based metal soft magnetic composite material |
| CN111370214A (en) * | 2019-11-20 | 2020-07-03 | 横店集团东磁股份有限公司 | Method for preparing magnetic powder core from alloy composite powder |
| CN112908677A (en) * | 2021-02-08 | 2021-06-04 | 浙江工业大学 | Preparation method of high-permeability low-loss integrated inductance material |
| CN113113224A (en) * | 2021-04-14 | 2021-07-13 | 中国科学院宁波材料技术与工程研究所 | Novel insulation coating method of soft magnetic powder for die-pressed inductor |
| CN113451039A (en) * | 2021-07-01 | 2021-09-28 | 中钢天源股份有限公司 | Novel FeSi-based water atomized Fe-Si-Cr soft magnetic powder core and preparation method thereof |
| CN113674984A (en) * | 2021-08-26 | 2021-11-19 | 合肥工业大学 | A kind of preparation method of FeSiAlZrScSr magnetic powder core |
| CN113744989A (en) * | 2021-09-02 | 2021-12-03 | 横店集团东磁股份有限公司 | Metal magnetic powder core and preparation method and application thereof |
| CN114005634A (en) * | 2021-11-10 | 2022-02-01 | 天通凯立科技有限公司 | A kind of double-film composite coating method of soft magnetic metal powder |
| CN114068167A (en) * | 2021-11-15 | 2022-02-18 | 横店集团东磁股份有限公司 | Soft magnetic composite material and preparation method and application thereof |
| CN115910581A (en) * | 2021-08-27 | 2023-04-04 | 同济大学 | A kind of iron-based soft magnetic composite material and preparation method thereof |
| WO2023060791A1 (en) * | 2021-10-12 | 2023-04-20 | 内蒙金属材料研究所 | Soft magnetic composite and preparation method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070289676A1 (en) * | 2001-01-11 | 2007-12-20 | Philip Morris Usa Inc. | High-strength high-temperature creep-resistant iron-cobalt alloys for soft magnetic applications |
| CN104028749A (en) * | 2014-06-05 | 2014-09-10 | 浙江大学 | High-thermal-stability insulated coating treatment method of metal soft magnetic composite material |
| CN104368807A (en) * | 2013-08-13 | 2015-02-25 | 东睦新材料集团股份有限公司 | Power coating method of metal soft magnetic composite and preparing method of metal soft magnetic composite |
| CN104575913A (en) * | 2014-12-01 | 2015-04-29 | 横店集团东磁股份有限公司 | Preparation method of low-loss amorphous magnetic powder core |
| CN107369515A (en) * | 2017-07-20 | 2017-11-21 | 天通（六安）新材料有限公司 | A kind of manufacture method of the composite magnetic powder cores of μ 26 |
| WO2018131536A1 (en) * | 2017-01-12 | 2018-07-19 | 株式会社村田製作所 | Magnetic material particles, dust core and coil component |
-
2018
- 2018-09-26 CN CN201811125037.1A patent/CN109273235B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070289676A1 (en) * | 2001-01-11 | 2007-12-20 | Philip Morris Usa Inc. | High-strength high-temperature creep-resistant iron-cobalt alloys for soft magnetic applications |
| CN104368807A (en) * | 2013-08-13 | 2015-02-25 | 东睦新材料集团股份有限公司 | Power coating method of metal soft magnetic composite and preparing method of metal soft magnetic composite |
| CN104028749A (en) * | 2014-06-05 | 2014-09-10 | 浙江大学 | High-thermal-stability insulated coating treatment method of metal soft magnetic composite material |
| CN104575913A (en) * | 2014-12-01 | 2015-04-29 | 横店集团东磁股份有限公司 | Preparation method of low-loss amorphous magnetic powder core |
| WO2018131536A1 (en) * | 2017-01-12 | 2018-07-19 | 株式会社村田製作所 | Magnetic material particles, dust core and coil component |
| CN107369515A (en) * | 2017-07-20 | 2017-11-21 | 天通（六安）新材料有限公司 | A kind of manufacture method of the composite magnetic powder cores of μ 26 |
Non-Patent Citations (1)
| Title |
|---|
| 李爱坤等: "《溶胶-凝胶法制备SiO2包覆Fe85Si9.6Al5.4软磁复合粉末》", 《中国有色金属学报》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111370214A (en) * | 2019-11-20 | 2020-07-03 | 横店集团东磁股份有限公司 | Method for preparing magnetic powder core from alloy composite powder |
| CN111029126B (en) * | 2019-12-12 | 2022-09-23 | 安徽工业大学 | A kind of iron-based metal soft magnetic composite material all-inorganic high temperature resistant insulation bonding method |
| CN111029126A (en) * | 2019-12-12 | 2020-04-17 | 安徽工业大学 | All-inorganic high-temperature-resistant insulating bonding method for iron-based metal soft magnetic composite material |
| CN112908677A (en) * | 2021-02-08 | 2021-06-04 | 浙江工业大学 | Preparation method of high-permeability low-loss integrated inductance material |
| CN113113224A (en) * | 2021-04-14 | 2021-07-13 | 中国科学院宁波材料技术与工程研究所 | Novel insulation coating method of soft magnetic powder for die-pressed inductor |
| CN113451039A (en) * | 2021-07-01 | 2021-09-28 | 中钢天源股份有限公司 | Novel FeSi-based water atomized Fe-Si-Cr soft magnetic powder core and preparation method thereof |
| CN113451039B (en) * | 2021-07-01 | 2023-03-14 | 中钢天源股份有限公司 | FeSi-based water atomized Fe-Si-Cr soft magnetic powder core and preparation method thereof |
| CN113674984A (en) * | 2021-08-26 | 2021-11-19 | 合肥工业大学 | A kind of preparation method of FeSiAlZrScSr magnetic powder core |
| CN113674984B (en) * | 2021-08-26 | 2023-03-21 | 合肥工业大学 | Preparation method of FeSiAlZrScSr magnetic powder core |
| CN115910581A (en) * | 2021-08-27 | 2023-04-04 | 同济大学 | A kind of iron-based soft magnetic composite material and preparation method thereof |
| CN113744989A (en) * | 2021-09-02 | 2021-12-03 | 横店集团东磁股份有限公司 | Metal magnetic powder core and preparation method and application thereof |
| WO2023060791A1 (en) * | 2021-10-12 | 2023-04-20 | 内蒙金属材料研究所 | Soft magnetic composite and preparation method therefor |
| CN114005634A (en) * | 2021-11-10 | 2022-02-01 | 天通凯立科技有限公司 | A kind of double-film composite coating method of soft magnetic metal powder |
| CN114068167A (en) * | 2021-11-15 | 2022-02-18 | 横店集团东磁股份有限公司 | Soft magnetic composite material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109273235B (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109273235A (en) | Double-shell insulation coating method for metal soft magnetic composite material | |
| CN103247403B (en) | A kind of preparation method of metal soft magnetic powder core | |
| CN103594218B (en) | A kind of preparation method of high superposition low-loss metal powder core | |
| CN103151134B (en) | Soft-magnetic powder core of silicone resin _ ferrite compound coating and preparation method thereof | |
| CN105185560B (en) | A kind of preparation method of ferrous metals soft magnetic-powder core | |
| CN102623121B (en) | Method for manufacturing iron-silicon material and Mu-90 iron-silicon magnetic powder core | |
| CN104028749B (en) | A kind of high thermal stability insulating wrapped processing method of soft magnetic metal composite | |
| CN105344993B (en) | A kind of method that temperature and pressure prepare iron-silicon-aluminum soft magnet powder core | |
| CN109215924A (en) | A kind of in-situ passivation insulating wrapped processing method of metal soft magnetic composite material | |
| CN107578874B (en) | A kind of preparation method of the iron nickel powder core of magnetic permeability μ=200 | |
| CN109273234A (en) | Non-uniform nucleation coating method for high saturation magnetic flux density soft magnetic composite material | |
| CN104028751B (en) | A kind of high-insulativity insulating wrapped processing method of soft magnetic metal composite | |
| CN108183012A (en) | A kind of insulating wrapped processing method for improving iron-based soft magnetic composite material pressed density | |
| CN104505209A (en) | Metal soft magnetic composite powder cores and preparation method thereof | |
| CN105772701A (en) | Preparation method for high-superposition low-loss soft magnetic alloy material | |
| CN107275032A (en) | A kind of preparation method of iron silicon metal soft magnetic powder core | |
| CN101579737A (en) | Preparation method of organic coated iron-dust core | |
| CN102294475B (en) | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method | |
| CN104028747A (en) | Inhomogeneous nucleation insulation coating processing method of metal soft magnetic composite material | |
| CN112562956A (en) | Ferrite-coated FeSiAl metal magnetic powder core and preparation method thereof | |
| CN109256251A (en) | The method that surface oxidation technique prepares high magnetic conductance low-power consumption metal soft magnetic composite material | |
| CN107119174B (en) | Annealing method for improving DC bias performance of Fe-Si-Al soft magnetic powder core | |
| CN114078631B (en) | Preparation method of soft magnetic composite material and metal magnetic powder core | |
| CN115938718B (en) | Direct-insert integrated cofiring inductor and preparation method thereof | |
| CN113470916A (en) | Fe-Si-Al soft magnetic powder core and preparation method thereof |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200807 Address after: 255000 No. 266 West Village Road, Zhangdian District, Shandong, Zibo Applicant after: Shandong University of Technology Address before: 264025 No. 186 Hongqi Middle Road, Zhifu District, Shandong, Yantai Applicant before: LUDONG University |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210604 |