CN108183012A - A kind of insulating wrapped processing method for improving iron-based soft magnetic composite material pressed density - Google Patents
A kind of insulating wrapped processing method for improving iron-based soft magnetic composite material pressed density Download PDFInfo
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- CN108183012A CN108183012A CN201711423191.2A CN201711423191A CN108183012A CN 108183012 A CN108183012 A CN 108183012A CN 201711423191 A CN201711423191 A CN 201711423191A CN 108183012 A CN108183012 A CN 108183012A
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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
- H01F1/33—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 mixtures of metallic and non-metallic particles; metallic particles having oxide skin
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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
- H01F41/0253—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 for manufacturing permanent magnets
- H01F41/026—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 for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
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Abstract
The present invention provides a kind of insulating wrapped processing methods for improving iron-based soft magnetic composite material pressed density, grain size proportion is carried out by the way that iron based soft magnetic powder is sieved, then insulating wrapped is carried out to the metal magnetic prepared using antiphase emulsifiable method, powder surface carries out cremate powder surface deposition parylene film of the processing later using chemical vapor deposition method after insulating wrapped, last cold moudling and annealing.The composite powder that the present invention prepares has multi-layer core-shell structure, and inner core is soft magnetic metal powder particle, and the external sheath of soft magnetic powder particles has SiO2Insulating layer, SiO2Outside be coated with parylene film layers.Compared with prior art, the composite powder that prepared by the present invention is evenly coated, is fine and close, and insulating wrapped layer thickness is controllable, and bond strength is high, can effectively improve the resistivity of soft magnetic metal particle and surface lubrication performance, increase substantially the pressed density of powder core；With the characteristic that saturation induction density is high, mechanical property is good and eddy-current loss is low.
Description
Technical field
The invention belongs to technical field of magnetic materials, and in particular to a kind of raising iron-based soft magnetic composite material pressed density
Insulating wrapped processing method.
Background technology
Soft-magnetic composite material（Also known as powder core, Soft Magnetic Composites, SMCs）It is with ferromagnetic powder
Particle mixes a kind of soft magnetic materials that compacting forms with megohmite insulant, it has three-dimensional（3D）Isotropism, low eddy-current loss,
Good frequency characteristic and be easy to mechanical processing the advantages that.The preparation process of soft-magnetic composite material includes：Powder is surface-treated, absolutely
The processes such as edge cladding, compression moulding and heat treatment, the preparation process of soft-magnetic composite material is usually without high temperature sintering, so pressure
The key factor that shape is preparation process is made, directly influences magnetic property, mechanical strength and the performance of material.It is general next
It says, pressure is bigger, and the density of material is higher, and the magnetic conductivity of SMCs is also higher.But increase pressure, the raising to SMCs density is that have
Limit, pressure is excessive to also result in insulating layer rupture, insulation effect is reduced, in addition, loss of the excessive pressure to mold
It is a factor of the limitation using big pressure.Therefore there is an urgent need to prepare, fine and close, associativity is good and with good insulating performance
Clad.
In recent years, many research had been carried out about the selection of insulating coating both at home and abroad.Iron-based soft magnetic composite wood at present
The preparation method of material is usually after mixing iron-based magnetic powders and organic resin class insulating compound, after compression molding and heat treatment
It obtains.Since the heat resisting temperature of these organic matters is generally relatively low, it is impossible to carry out effective heat treatment to eliminate compacting stress to magnetic
Property influence, in order to improve the heat treatment temperature of SMC material the stress that is generated when eliminating compacting, inorganic coating gradually becomes people
The hot spot studied.The type of inorganic coating can be divided into：Inorganic phosphate coats（Zinc phosphoric acid, iron phosphate and manganese phosphoric acid）、
Metal oxide coats（SiO2, MgO, Al2O3）And ferrite coating etc..
Patent CN100500783C is used by SiO2、Al2O3、ZrO2Mixture of nanoparticles with mica powder is as insulation
Agent prepares FeSiAl soft-magnetic composite materials, but magnetic powder and uniformly mixing for insulating compound are more difficult to control, it is difficult to magnetic powder be carried out equal
Even cladding, and insulated by oxide clad and magnetic powder poor bonding strength easily come off in pressing process, so as to influence cladding effect
Fruit.Clock brook etc.（Xiaoxi Zhong, et al. Journal of Magnetism and Magnetic Materials,
2012, 324: 2631-2636）FeSiAl powder is placed in H2-N2In atmosphere, existed by surface nitride selectivity oxidation technology
FeSiAl powder Surface Creations AlN-Al2O3Mix insulation layer, mix insulation layer be powdered base surface occur in-situ chemical
The product of reaction, although insulating layer can keep good bond strength, AlN-Al with matrix2O3Clad has higher
Brittleness, can cause in pressing process insulating layer it is broken cause magnetic powder core loss increase.
Chinese invention patent CN 103545074A disclose a kind of magnetic with composite construction for being used to prepare metal-powder-core
Property metal powder, this kind of metal powder have three-decker, be followed successively by the softer metal of magnetic metallic powder, hardness from inside to outside
Layer and the ionic compound with insulation characterisitic.Chinese invention patent CN 106601416A disclose a kind of multi-layer core-shell knot
Iron silicon soft magnetic composite powder of structure and preparation method thereof, composite powder include inner core and are coated on the shell of inner core outer layer,
Its inner core is iron silicon soft magnetic particles, and the external sheath of soft magnetic particles has Fe3Si, Fe3The outside of Si is coated with SiO2Insulating layer.
Multi-layer core-shell structure composite powder prepared by both methods, can effectively improve powder particle and the combination of insulating layer is strong
Degree, but since its outermost insulating film has higher brittleness, embrittlement can occur for this ceramic phase in pressing process, lead
The uneven and incomplete of cladding is caused, so as to increase eddy-current loss.
Parylene coating materials are to deposit under vacuum, are that the molecule of cracking regroups the protection material to be formed
Material, belongs to the growth of molecular level, and the coating of generation is form compact and stable, friction coefficient is small, and with the increase of coatings growth thickness, rubs
Coefficient is wiped to reduce.When thickness is 0.5 μm, friction coefficient just corresponds to the half of silicon coat, friction system when thickness is 2 μm
Number, just corresponds to the 1/4 of 0.5 μ m-thick coating friction coefficient.In addition, the tensile strength of Parylene materials, linear expansion coefficient etc.
Parameter is stablized relatively, and excellent insulation performance and purity are high, steam permeability is low, without ionic soil, therefore are not influenced by moisture,
With good corrosion resisting property.Inventor（Shen Wu, Aizhi Sun, et al. Materials Chemistry and
Physics, 2015, 153: 359-364）It successfully deposited on reduced iron powder surface using the method for chemical vapor deposition
Parylene C films effectively raise the pressed density of soft-magnetic composite material, but its resistivity is relatively low, and vortex is caused to be damaged
It consumes larger, limits its application in high frequency.
Invention content
For current soft-magnetic composite material insulating coating bond strength it is low, coat uneven and suppression performance it is poor
Defect, the present invention provide a kind of insulating wrapped processing method for improving iron-based soft magnetic composite material pressed density.
To achieve the above object, the present invention adopts the following technical scheme that：A kind of raising iron-based soft magnetic composite material compacting is close
The insulating wrapped processing method of degree, the soft-magnetic composite material have multi-layer core-shell structure, and inner core is metallic magnetic powder, gold
Belong to coated silica insulating layer outside Magnaglo, parylene layers of silicon dioxide layer outer cladding.
The insulating wrapped processing method of iron-based soft magnetic composite material pressed density is improved, is followed the steps below：
（1）The grain size proportion of powder：To metallic magnetic powder screening for -50 ~+140 mesh, -140 ~+250 mesh, -250 ~+
The powder of 350 mesh and -350 four kinds of fineness of mesh, the powder of four kinds of fineness sieved is according to quality proportioning 1:4:2:1 mixing is equal
It is even；
（2）Antiphase emulsifiable method coated Si O2Insulating layer：Surfactant, oil phase and water phase are added in conical flask and prepares Water-In-Oil
Type reverse micro emulsion；It is by mass ratio（93~98）：（2~7）Metallic magnetic powder and ethyl orthosilicate（TEOS）Add in reverse phase
In microemulsion, it is 8.0 ~ 8.5 to reconcile reacting liquid pH value with water phase, and then Quick mechanical stirs 6h at room temperature；Compound concentration is 75%
Aqueous acetone solution be demulsified to reaction solution, draw supernatant liquor after stratification, to lower sediment thing washes of absolute alcohol, so
1h is dried in vacuo at 100 ~ 150 DEG C afterwards, obtains SiO2The metal magnetic composite powder of cladding；
（3）Powder surface activation process：By step（2）Middle SiO2Metal magnetic composite powder after cladding is dissolved in absolute ethyl alcohol
In, coupling agent is then added in, then mechanical agitation 1.5h is dried in vacuo 2h at 100 DEG C, obtain the composite powder of surface active
End；
（4）Chemical vapor deposition (CVD) parylene films：By step（3）It is heavy that the composite powder of middle surface active is placed on
In the roller in product region, roller rotates in deposition process according to the speed of 60 ~ 120r/min；Parylene powder is placed on painting
In the cavity of coating equipment, under 2.0Pa vacuum degrees by parylene powder at 180 DEG C literization, then cracking intracavitary through 650 DEG C
Cracking forms methylene state；Finally at 25 DEG C deposit intracavitary methene key be aggregated in powder surface formed it is stable
Parylene films；
（5）Cold moudling and annealing：By step（4）In coated Si O in surface obtained2The metal of-parylene insulating layers
Powder uses powder metallurgical technique, is cold-pressed under 500 ~ 1000MPa pressure and fine and close loop sample is made；Loop sample is placed in
It is made annealing treatment in protective atmosphere.
The metallic magnetic powder for reduced iron powder, atomized iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-Si-Ni powder,
The composition of one or more of Fe-Si-Cr powder.
Preferably, step（2）Described in surfactant in reverse micro emulsion be hexamethylene and octyl phenol polyoxy
Vinethene, oil phase are n-butanol, and water phase is concentrated ammonia liquor, and the volume ratio of three is：Surfactant：Oil phase：Water phase is 82:17:
1。
Preferably, step（3）Described in coupling agent for silane coupling agent or titanate coupling agent, coupling agent contains
Measure 0.5 ~ 1.5wt% for magnetic coupling powder.
Preferably, step（4）Described in parylene powder be N-type, c-type, one kind in D types, parylene
The thickness of deposition film is 0.05 ~ 5um.
Preferably, step（5）Described in protective atmosphere for nitrogen or argon gas, heat treatment temperature is 200 ~ 280
DEG C, soaking time 2h.
Compared with existing soft-magnetic composite material preparation method, raising iron-based soft magnetic composite material pressure provided by the present invention
The insulating wrapped processing method of density processed, has the following advantages：（1）The present invention first carries out metal powder by antiphase emulsifiable method
SiO2Insulating wrapped, then in SiO2The surface deposition parylene films of insulating coating, prepare with high bond strength, height
The SiO of resistivity, high magnetic characteristics and self-lubricating property2- parylene insulating layers.Treated that composite powder has for insulating wrapped
Multi-layer core-shell structure, inner core is soft magnetic metal powder particle, the external sheath of soft magnetic powder particles has SiO2Insulating layer,
SiO2Outside be coated with parylene film layers, combined in the form of nucleocapsid between insulating coating and powdered base,
The effective uniformity and integrality for improving cladding；（2）Using antiphase emulsifiable method in metallic magnetic powder coated with uniform one
Layer SiO2Insulating layer, bond strength is high, not easily to fall off, and cladding treatment temperature is low, and operability is strong.SiO2Insulating layer have compared with
Big resistivity and excellent high temperature resistance, it is ensured that the high frequency magnetism characteristic of soft-magnetic composite material；（3）Using chemical gas
Phase deposition method is in SiO2Surface of insulating layer deposits one layer of parylene film, using the self-lubricating property of parylene films,
It can effectively solve the problems, such as brittle break during metal oxide layer compacting, ensure the integrality of clad；It is insulated using height
When the Parylene of characteristic and self-lubricating function is as external cladding medium so that while insulating wrapped, between reduction magnetic powder
Frictional force.In the magnet for obtaining equal densities, pressing pressure can be reduced, so as to reduce internal stress and its to material soft magnetism
The damage of performance, while raising shaping efficiency is may also reach up, improve the purpose of Forming Quality；（4）Parylene films have
Steam permeability is low, characteristic without ionic soil, therefore is not influenced by moisture, has good corrosion resisting property.Utilize this hair
The insulating wrapped processing method of bright offer, it is greatly simple without carrying out surface anticorrosion spray treatment to soft-magnetic composite material magnet
Change preparation section, improve production efficiency.
Description of the drawings
Fig. 1 is the soft magnetic composite powder structure diagram for having in the present invention multi-layer core-shell structure.
Fig. 2 is metallic magnetic powder coated Si O in embodiment 1 in the present invention2SEM figures after-parylene insulating layers.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
（1）Sequentially added in conical flask the hexamethylene of 66mL, the octyl phenol polyoxyethylene ether of 16mL, 17mL n-butanol and
The concentrated ammonia liquor of 1mL stirs 15min, prepares water-in oil microemulsion；Choose by grain size proportion 95g atomized iron powders and
The ethyl orthosilicate of 5g（TEOS）It adds in reverse micro emulsion, it is 8.0 to reconcile reacting liquid pH value with concentrated ammonia liquor, then fast at room temperature
Fast mechanical agitation 6h；The aqueous acetone solution that compound concentration is 75% is demulsified to reaction solution, and supernatant liquor is drawn after stratification, right
Then lower sediment thing washes of absolute alcohol is dried in vacuo 1h at 100 DEG C, obtains SiO2The metal magnetic composite powder of cladding
End；
（2）By SiO2Metal magnetic composite powder after cladding is dissolved in absolute ethyl alcohol, then adds in 1.5g silane coupling agents, machine
Tool stirs 1.5h, is then dried in vacuo 2h at 100 DEG C, obtains the composite powder of surface active；By the composite powder of surface active
End is placed in the roller of deposition region, and roller rotates in deposition process according to the speed of 60r/min；By 5g parylene
C powder is placed in the cavity of coating equipment, under 2.0Pa vacuum degrees by parylene C powder at 180 DEG C literization, then splitting
Solution chamber forms methylene state through 650 DEG C of cracking；Deposition intracavitary methene key is aggregated in powder surface and forms thickness at last 25 DEG C
Spend the parylene C films stablized for 5um；
（3）By surface coated Si O2The metal powder of-parylene insulating layers uses powder metallurgical technique, under 500MPa pressure
Fine and close loop sample is made in cold pressing；Loop sample is placed in nitrogen atmosphere and is made annealing treatment, annealing temperature is 220 DEG C,
Keep the temperature 2h.
According to soft-magnetic composite material prepared by specific embodiment 1, it is tested for the property, it is as a result as follows：Density is
6.52 g·cm-3, maximum permeability 210.3, saturation induction density 889.2mT, resistivity is 1039.8 μ Ω m, most
Big magnetic loss（100kHz, 50mT）For 117.5 W/kg.
Embodiment 2
（1）Sequentially added in conical flask the hexamethylene of 67mL, the octyl phenol polyoxyethylene ether of 15mL, 17mL n-butanol and
The concentrated ammonia liquor of 1mL stirs 15min, prepares water-in oil microemulsion；Choose by grain size proportion 96g reduced iron powders and
The ethyl orthosilicate of FeSiAl mixed-powders and 4g（TEOS）It adds in reverse micro emulsion, reconciling reacting liquid pH value with concentrated ammonia liquor is
8.2, then Quick mechanical stirs 6h at room temperature；The aqueous acetone solution that compound concentration is 75% is demulsified to reaction solution, after stratification
Supernatant liquor is drawn, to lower sediment thing washes of absolute alcohol, then 1h is dried in vacuo at 150 DEG C, obtains SiO2Cladding
Metal magnetic composite powder；
（2）By SiO2Fe-FeSiAl mixed-powders after cladding are dissolved in absolute ethyl alcohol, then add in the coupling of 0.85g titanate esters
Then agent, mechanical agitation 1.5h are dried in vacuo 2h at 100 DEG C, obtain the composite powder of surface active；By answering for surface active
It closes powder to be placed in the roller of deposition region, roller rotates in deposition process according to the speed of 80r/min；By 3g
Parylene N powder is placed in the cavity of coating equipment, is risen parylene N powder at 180 DEG C under 2.0Pa vacuum degrees
Change, then form methylene state through 650 DEG C of cracking in cracking chamber；Intracavitary methene key is deposited at last 25 DEG C and is aggregated in powder
It is the parylene N thin films that 2um stablizes that surface, which forms thickness,；
（3）By surface coated Si O2The metal powder of-parylene insulating layers uses powder metallurgical technique, under 650MPa pressure
Fine and close loop sample is made in cold pressing；Loop sample is placed in nitrogen atmosphere and is made annealing treatment, annealing temperature is 200 DEG C,
Keep the temperature 2h.
According to soft-magnetic composite material prepared by specific embodiment 2, it is tested for the property, it is as a result as follows：Density is
6.73 g·cm-3, maximum permeability 230.3, saturation induction density 914.2mT, resistivity is 830.5 μ Ω m, most
Big magnetic loss（100kHz, 50mT）For 87.1 W/kg.
Embodiment 3
（1）Sequentially added in conical flask the hexamethylene of 68mL, the octyl phenol polyoxyethylene ether of 14mL, 17mL n-butanol and
The concentrated ammonia liquor of 1mL stirs 15min, prepares water-in oil microemulsion；Choose the 98g FeSiCr powder by grain size proportion
With the ethyl orthosilicate of 2g（TEOS）It adds in reverse micro emulsion, it is 8.2 to reconcile reacting liquid pH value with concentrated ammonia liquor, then at room temperature
Quick mechanical stirs 6h；The aqueous acetone solution that compound concentration is 75% is demulsified to reaction solution, and supernatant liquor is drawn after stratification,
To lower sediment thing washes of absolute alcohol, 1h then is dried in vacuo at 150 DEG C, obtains SiO2The metal magnetic of cladding is compound
Powder；
（2）By SiO2FeSiCr powder after cladding is dissolved in absolute ethyl alcohol, then adds in 0.5g titanate coupling agents, and machinery stirs
1.5h is mixed, is then dried in vacuo 2h at 100 DEG C, obtains the composite powder of surface active；The composite powder of surface active is put
It puts in the roller of deposition region, roller rotates in deposition process according to the speed of 120r/min；By 0.7g parylene D
Powder is placed in the cavity of coating equipment, under 2.0Pa vacuum degrees by parylene D powder at 180 DEG C literization, then splitting
Solution chamber forms methylene state through 650 DEG C of cracking；Deposition intracavitary methene key is aggregated in powder surface and forms thickness at last 25 DEG C
Spend the parylene D films stablized for 0.05um；
（3）By surface coated Si O2The metal powder of-parylene insulating layers uses powder metallurgical technique, in 1000MPa pressure
Fine and close loop sample is made in lower cold pressing；Loop sample is placed in argon gas atmosphere and is made annealing treatment, annealing temperature 280
DEG C, keep the temperature 2h.
According to soft-magnetic composite material prepared by specific embodiment 3, it is tested for the property, it is as a result as follows：Density is
7.03 g·cm-3, maximum permeability 247.6, saturation induction density 1094.3mT, resistivity is 310.5 μ Ω m, most
Big magnetic loss（100kHz, 50mT）For 309.5 W/kg.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art, this hair
It is bright to be not restricted to the described embodiments, under the premise of general idea of the present invention is not departed from, several variations can also be made and changed
Into these should also be considered as protection scope of the present invention.
Claims (7)
1. a kind of insulating wrapped processing method for improving iron-based soft magnetic composite material pressed density, it is characterised in that：The soft magnetism
Composite material has multi-layer core-shell structure, and inner core is metallic magnetic powder, coated silica is exhausted outside metallic magnetic powder
Edge layer, parylene layers of silicon dioxide layer outer cladding.
2. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as described in claim 1
It is, follows the steps below：
（1）The grain size proportion of powder：To metallic magnetic powder screening for -50 ~+140 mesh, -140 ~+250 mesh, -250 ~+
The powder of 350 mesh and -350 four kinds of fineness of mesh, the powder of four kinds of fineness sieved is according to quality proportioning 1:4:2:1 mixing is equal
It is even；
（2）Antiphase emulsifiable method coated Si O2Insulating layer：Surfactant, oil phase and water phase are added in conical flask and prepares Water-In-Oil
Type reverse micro emulsion；It is by mass ratio（93~98）：（2~7）Metallic magnetic powder and ethyl orthosilicate（TEOS）Add in reverse phase
In microemulsion, it is 8.0 ~ 8.5 to reconcile reacting liquid pH value with water phase, and then Quick mechanical stirs 6h at room temperature；Compound concentration is 75%
Aqueous acetone solution be demulsified to reaction solution, draw supernatant liquor after stratification, to lower sediment thing washes of absolute alcohol, so
1h is dried in vacuo at 100 ~ 150 DEG C afterwards, obtains SiO2The metal magnetic composite powder of cladding；
（3）Powder surface activation process：By step（2）Middle SiO2Metal magnetic composite powder after cladding is dissolved in absolute ethyl alcohol,
Coupling agent is then added in, then mechanical agitation 1.5h is dried in vacuo 2h at 100 DEG C, obtains the composite powder of surface active；
（4）Chemical vapor deposition (CVD) parylene films：By step（3）It is heavy that the composite powder of middle surface active is placed on
In the roller in product region, roller rotates in deposition process according to the speed of 60 ~ 120r/min；Parylene powder is placed on painting
In the cavity of coating equipment, under 2.0Pa vacuum degrees by parylene powder at 180 DEG C literization, then cracking intracavitary through 650 DEG C
Cracking forms methylene state；Finally at 25 DEG C deposit intracavitary methene key be aggregated in powder surface formed it is stable
Parylene films；
（5）Cold moudling and annealing：By step（4）In coated Si O in surface obtained2The metal powder of-parylene insulating layers
End is cold-pressed under 500 ~ 1000MPa pressure and fine and close loop sample is made using powder metallurgical technique；Loop sample is placed in guarantor
It is made annealing treatment in shield property atmosphere.
3. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as claimed in claim 2
It is：The metallic magnetic powder is reduced iron powder, atomized iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-Si-Ni powder, Fe-
The composition of one or more of Si-Cr powder.
4. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as claimed in claim 2
It is：Step（2）Described in surfactant in reverse micro emulsion be hexamethylene and octyl phenol polyoxyethylene ether, oil phase is just
Butanol, water phase are concentrated ammonia liquor, and the volume ratio of three is：Surfactant：Oil phase：Water phase is 82:17:1.
5. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as claimed in claim 2
It is：Step（3）Described in coupling agent for silane coupling agent or titanate coupling agent, the content of coupling agent is magnetic coupling powder
0.5 ~ the 1.5wt% at end.
6. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as claimed in claim 2
It is：Step（4）Described in parylene powder be N-type, c-type, one kind in D types, the thickness of parylene deposition films
For 0.05 ~ 5um.
7. the insulating wrapped processing method of iron-based soft magnetic composite material pressed density, feature are improved as claimed in claim 2
It is：Step（5）Described in protective atmosphere for nitrogen or argon gas, heat treatment temperature is 200 ~ 280 DEG C, and soaking time is
2h。
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| CN110706912A (en) * | 2019-09-09 | 2020-01-17 | 中国科学院宁波材料技术与工程研究所 | Preparation method of amorphous nanocrystalline soft magnetic powder core |
| CN110783091A (en) * | 2019-11-06 | 2020-02-11 | 安徽工业大学 | Preparation method of nanocrystalline FeSiBCr magnetic powder core |
| CN112700940A (en) * | 2020-12-21 | 2021-04-23 | 安徽智磁新材料科技有限公司 | Iron-nickel-based amorphous soft magnetic alloy magnetic powder core material and preparation method thereof |
| CN113066631A (en) * | 2021-03-26 | 2021-07-02 | 福建尚辉润德新材料科技有限公司 | Application method of Parylene powder in iron-based soft magnetic composite material |
| WO2021140156A1 (en) * | 2020-01-10 | 2021-07-15 | Basf Se | Soft-magnetic powder comprising coated particles |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069972A (en) * | 1988-09-12 | 1991-12-03 | Versic Ronald J | Moldable microcapsule that contains a high percentage of solid core material, and method of manufacture thereof |
| CN102132361A (en) * | 2008-09-02 | 2011-07-20 | 丰田自动车株式会社 | Powder for powder magnetic core, powder magnetic core, and methods for producing those products |
| CN102820115A (en) * | 2012-08-31 | 2012-12-12 | 哈尔滨工业大学 | Sol soaked glass wrapped layer soft magnetism composite material and preparation method thereof |
| CN105659337A (en) * | 2013-09-27 | 2016-06-08 | 日立化成株式会社 | Powder magnetic core, method for manufacturing powder compact for magnetic core, pressing die and mold device for manufacturing powder magnetic core, and lubricant composition for pressing die for manufacturing powder magnetic core |
-
2017
- 2017-12-25 CN CN201711423191.2A patent/CN108183012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5069972A (en) * | 1988-09-12 | 1991-12-03 | Versic Ronald J | Moldable microcapsule that contains a high percentage of solid core material, and method of manufacture thereof |
| CN102132361A (en) * | 2008-09-02 | 2011-07-20 | 丰田自动车株式会社 | Powder for powder magnetic core, powder magnetic core, and methods for producing those products |
| CN102820115A (en) * | 2012-08-31 | 2012-12-12 | 哈尔滨工业大学 | Sol soaked glass wrapped layer soft magnetism composite material and preparation method thereof |
| CN105659337A (en) * | 2013-09-27 | 2016-06-08 | 日立化成株式会社 | Powder magnetic core, method for manufacturing powder compact for magnetic core, pressing die and mold device for manufacturing powder magnetic core, and lubricant composition for pressing die for manufacturing powder magnetic core |
Non-Patent Citations (2)
| Title |
|---|
| SHEN WU: "Fabrication and properties of Iron-based soft magnetic composites coated with parylene via chemical vapor deposition polymerization", 《MATERIALS CHEMISTRY AND PHYSICS》 * |
| SHEN WU: "Magnetic proerties of iron-based soft magnetic composites with SiO2 coating obtained by reverse microemulsion method", 《JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS》 * |
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