CN109754977A - A kind of high anti-corrosion molding inductance soft magnetism powder and preparation method thereof - Google Patents
A kind of high anti-corrosion molding inductance soft magnetism powder and preparation method thereof Download PDFInfo
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- CN109754977A CN109754977A CN201910090395.1A CN201910090395A CN109754977A CN 109754977 A CN109754977 A CN 109754977A CN 201910090395 A CN201910090395 A CN 201910090395A CN 109754977 A CN109754977 A CN 109754977A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
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- 239000000203 mixture Substances 0.000 claims description 32
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 30
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 30
- 229910052742 iron Inorganic materials 0.000 claims description 24
- 238000005303 weighing Methods 0.000 claims description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 22
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 20
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- 239000000395 magnesium oxide Substances 0.000 claims description 18
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- 229920000647 polyepoxide Polymers 0.000 claims description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 16
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 16
- 229940063655 aluminum stearate Drugs 0.000 claims description 16
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 15
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 15
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- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 11
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- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
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Abstract
The invention discloses a kind of high anti-corrosion molding inductance soft magnetism powders and preparation method thereof, including at least one soft magnetic granules material, every kind of soft magnetic granules material respectively includes metal soft magnetic alloy particle, phosphorus acid passivation layer, inorganic powder clad, organic resin solidification cladding film layer, the uncured clad of organic resin and lubricant layer, phosphorus acid passivation layer is coated on metal soft magnetic alloy particle exterior surface, inorganic powder clad is coated on phosphorus acid passivation layer outer surface, organic resin solidification cladding film layer is coated on inorganic powder clad outer surface, the uncured clad of organic resin is coated on organic resin solidification cladding film layer outer surface, lubricant layer is coated on the uncured clad outer surface of organic resin；Advantage is with high corrosion resistance.
Description
Technical field
The present invention relates to a kind of soft magnetism powders, more particularly, to a kind of high anti-corrosion molding inductance soft magnetism powder and its preparation
Method.
Background technique
A kind of molding inductance that Integral mold voltage inductance uses integral forming process to be prepared, main material includes soft magnetism
Coil and electrode pin are placed in soft magnetism powder and are pressed by powder, coil and electrode pin, obtain after then solidifying
It is molded inductance, coil is located at the inside of the inductance green body of soft magnetism powder formation, and electrode pin is drawn out to outside out of inductance green body.
Integral mold voltage inductance has many advantages, such as that magnetic circuit closure, electromagnetism interference, packing density are high and especially suitable for SMT technique, in electricity
It is used in sub-circuit mainly as energy storage or filtering device.Currently, Integral mold voltage inductance has been widely used in industrial control mainboard, has shown
Card, tablet computer, laptop, mobile unit, distribution power-supply system, DC/DC converter, LED street lamp equipment, communication apparatus
With the electronics industry field such as Medical Devices.
Use environment impacts the electronic component service life, and different use environments is reliable to the environment of electronic component
Property have a corresponding requirements, such as marine environment, acidic environment or moist dark environment to the corrosion resisting property of Integral mold voltage inductance have compared with
High request.The basic material soft magnetism powder being integrally formed in molding inductance is generally carbonyl iron dust or ferrous alloy, such as iron silicon, iron
Sial, iron silicochromium etc., ferro element contained therein, which is easily corroded in moist, acid or environment with chloride ion, causes inductance to produce
Product table gets rusty, and shortens inductance service life.
For the corrosion resistance for improving Integral mold voltage inductance, it is common practice to be sprayed on the Integral mold voltage inductance surface of corrosion resistance difference
Apply one layer of protective paint.This way can be obviously improved the corrosion resistance of Integral mold voltage inductance, but greatly improve process costs,
Increase equipment investment, and the environmental requirement of spraying process is stringent.
Summary of the invention
The first technical problem to be solved by the present invention is to provide a kind of molding inductance soft magnetism with high corrosion resistance
Powder.
The present invention solves technical solution used by one of above-mentioned technical problem are as follows: a kind of high anti-corrosion molding inductance soft magnetism
Powder, including at least one soft magnetic granules material, soft magnetic granules material described in every kind respectively include metal soft magnetic alloy particle,
Phosphorus acid passivation layer, inorganic powder clad, organic resin solidification cladding film layer, the uncured clad of organic resin and lubricant
Layer, the phosphorus acid passivation layer are coated on the metal soft magnetic alloy particle exterior surface, the inorganic powder clad packet
The phosphorus acid passivation layer outer surface is overlayed on, the organic resin solidifies cladding film layer and is coated on the inorganic powder cladding
Layer outer surface, the uncured clad of the organic resin are coated on the organic resin solidification cladding film layer outer surface, institute
The lubricant layer stated is coated on the uncured clad outer surface of organic resin.
The particle size range of the metal soft magnetic alloy particle be 5 μm~120 μm, the phosphorus acid passivation layer with a thickness of
10nm~500nm, the weight of the phosphorus acid passivation layer are the 0.01%~5% of the metal soft magnetic alloy particle weight,
The inorganic powder clad with a thickness of 200nm~1 μm, the weight of the inorganic powder clad is the metal
The 0.2%~2% of magnetically soft alloy particle weight；The organic resin solidify cladding film layer with a thickness of 200nm~1 μm, institute
The weight that the organic resin stated solidifies cladding film layer is the 0.2%~2% of the metal soft magnetic alloy particle weight, described
The uncured clad of organic resin with a thickness of 200nm~1 μm, the weight of the uncured clad of the organic resin is described
Metal soft magnetic alloy particle weight 0.2%~2%, the lubricant layer with a thickness of 500nm~3 μm, the profit
The weight of lubrication prescription layer is the 0.2%~2% of the metal soft magnetic alloy particle weight.In the structure, passivation layer takes phosphoric acid
Passivation mode, in 5 μm~120 μm of alloying pellet Surface Creation phosphorus acid passivation layer, passivation layer has the function of corrosion resistant, 10nm
What the thickness of~500nm can guarantee passivation layer even compact is coated on metal soft magnetic alloy particle surface, enhances soft magnetic granules
On the one hand the inorganic powder clad of material corrosion resistance, 200nm~1 μm both continues anti-corrosion effect, on the other hand because of inorganic powder
Inorganic powder in clad is megohmite insulant, can inhibit the eddy-current loss of soft magnetic granules storeroom under high frequency, inhibits molding
The temperature rise of inductance component, it is to be evenly coated at inorganic powder clad by heat cured organic resin that organic resin, which solidifies coating film,
It is formed again through hot setting behind surface, the water resistance of soft magnetic granules material can be greatly reinforced, completely cut off metal soft magnetic alloy particle
With the contact of extraneous corrosive media, the anti-corrosion effect of antirust is played；Meanwhile the organic resin solidification coating film after solidification may be used also
To buffer the friction in pressing process between metal soft magnetic alloy particle and the side wall of die casting, to metal soft magnetic alloy particle
Protective action is played, prevents rubbing action from causing to damage to metal soft magnetic alloy particle surface, 0.2%~2% organic resin is non-
Solidification clad plays bonding during being molded inductance compression moulding, makes to have through high temperature again after being molded inductance compression moulding
The uncured clad solidification of machine resin, is molded inductance pressure at this time and obtains higher mechanical strength, while the uncured packet of organic resin
Coating can also play isolation corrosive medium, protect the work of metal soft magnetic alloy particle, and as a result, in the structure, comprehensive utilization is each
Layer substance is to the protective action of metal soft magnetic alloy particle, so that soft magnetic granules material has high anti-corrosion characteristic.
The material of metal soft magnetic alloy particle in soft magnetic granules material described in every kind is respectively iron silicochromium, iron silicon, carbonyl
Any one in base iron powder, iron nickel and iron sial, the material of the inorganic powder clad in soft magnetic granules material described in every kind
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind institute
The material that the organic resin in soft magnetic granules material stated solidifies cladding film layer is respectively epoxy resin, organic siliconresin, insatiable hunger
With in polyester resin and phenolic resin any one or at least two mixture；In soft magnetic granules material described in every kind
The material of the uncured clad of organic resin be respectively epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic aldehyde tree
In rouge any one or at least two mixture；The material of lubricant layer in soft magnetic granules material described in every kind point
Not Wei in zinc stearate powder, hard magnesium powder and aluminum stearate powder any one or at least two mixture.
In the structure, iron silicochromium, iron silicon, carbonyl iron dust, iron nickel and iron sial particle powder are widely used soft magnetism materials, but because of it
It is all metal material, therefore corrosion resistance is bad；Aluminium oxide, magnesia, silicon oxide powder have high chemical stability and insulated electro
Resistance is high, can play the role of anti-corrosion, insulation after being evenly coated at metal soft magnetic alloy particle surface；Epoxy resin, organosilicon tree
Rouge, unsaturated polyester (UP) and phenolic resin are thermosetting resin, are dissolvable in water in organic solvent before solidification, are coated in inorganic powder
Layer surface forms the clad of one layer of even compact, and chemical stability is good after solidification, corrosion resistance is high, good insulating, mechanical strength
Height applies the above characteristic of organic resin in this patent, and first closing inorganic powder cover surface, to form one layer of organic resin solid
Change film, utilizes the corrosion resistance and insulating properties of organic resin cured film；Then coating one layer again in organic resin solidification film surface has
The uncured clad of machine resin is solidified, it is ensured that inductance has high machine again after soft magnetism powder is pressed into molding inductance
Tool intensity.
The partial size of the alumina powder, the magnesium oxide powder and the silicon oxide powder is respectively 200nm
The partial size of~500nm, the zinc stearate powder, the hard magnesium powder and the aluminum stearate powder is respectively
200nm~3 μm.In the structure, the grain diameter of the alumina powder of 200nm~500nm, magnesium oxide powder and silicon oxide powder
Than 5 μm~120 μm alloying pellet partial sizes are much smaller, it is ensured that inorganic powder forms one layer in metal soft magnetic alloy particle surface
Uniform clad, inorganic particle is too small to will cause bridging phenomenon, and powder compaction characteristics are deteriorated；Particle is excessive, can not be formed
The clad of even densification, corrosion-resistant insulation effect are deteriorated, and it is resistance to that the grain diameter of 200nm~500nm plays inorganic powder clad
The purpose of insulation is lost, and being not take up excessive volumetric spaces causes inductance magnetic property to decline.
Compared with prior art, the advantages of molding inductance of the invention soft magnetism powder, is to close by using soft magnetic metal
Gold particle is kernel, respectively includes metal soft magnetic alloy particle, phosphorus acid passivation layer, inorganic powder clad, organic from inside to outside
Resin solidification coats the multilayered structure of film layer, organic resin uncured clad and lubricant layer, wherein metal soft magnetic alloy
Grain be realize function solenoid core material, phosphorus acid passivation layer, inorganic powder clad and organic resin solidification clad rise every
From external corrosion environments, the corrosion proof effect of soft magnetic granules material is improved, while soft magnetic granules surface of material resistivity can be improved,
It reduces eddy-current loss, especially organic resin and solidifies clad, can show to be formed in inorganic powder clad comparatively dense anti-
Sheath considerably increases the corrosion resistance of soft magnetic granules material, and the uncured layer of organic resin is during being molded inductance compression moulding
Play bonding agent, can further promote product corrosion resistance, lubricant after being heating and curing after being molded voltage compression moulding
Layer plays lubricating action in product pressing process, prevents multilayered structure caused by rubbing because of mold from destroying.
The second technical problem to be solved by the present invention is to provide a kind of preparation method for being molded inductance soft magnetism powder, adopts
There is high corrosion resistance with soft magnetism powder with molding inductance prepared by the preparation method.
The present invention solves technical solution used by the two of above-mentioned technical problem are as follows: a kind of high anti-corrosion molding inductance soft magnetism
The preparation method of powder, comprising the following steps:
(1) the metal soft magnetic alloy granule materials of required weight are weighed；
(2) phosphoric acid for weighing required weight, phosphoric acid is dissolved in alcohol, obtains passivating solution；
(3) passivating solution is mixed with metal soft magnetic alloy granule materials, is stirred in 30 DEG C~80 DEG C of isoperibol blunt
Change 60min the alcohol contained in passivating solution volatilizees, the phosphoric acid contained in passivating solution is evenly coated at metal soft magnetic alloy particle
Surface of material forms phosphorus acid passivation layer, obtains the first granule materials；
(4) inorganic particle for weighing required weight stirs equal after mixing inorganic particle with first granule materials
Even, inorganic particle is evenly coated at the first granule materials surface and forms inorganic powder clad, obtains the second granule materials；
(5) the first resin and acetone are mixed to get the first resin solution by the first resin for weighing required weight；
(6) the first resin solution is mixed with the second granule materials, is first stirred in 30 DEG C~80 DEG C of isoperibol
60min volatilizees acetone, then 60 DEG C~200 DEG C at a temperature of make the first resin solidification, the first resin is coated at this time
Two granule materials surfaces form organic resin solidification cladding film layer, obtain third granule materials；
(7) the second resin and acetone are mixed to get the second resin solution by the second resin for weighing required weight；
(8) the second resin solution is mixed with third granule materials, stirs 60min in 30 DEG C~80 DEG C of isoperibol
Acetone is volatilized, then 60 DEG C -80 DEG C at a temperature of dry, the second resin is coated on third granule materials surface and is formed at this time
The uncured clad of organic resin, obtains the 4th granule materials；
(9) the lubricant powder for weighing required weight mixes lubricant powder with the 4th granule materials, uniform stirring
60min makes lubricant powder be evenly coated at the 4th granule materials surface and forms lubricant layer, obtains soft magnetic granules material；
(10) the soft magnetic granules material for weighing corresponding weight constitutes high anti-corrosion molding inductance soft magnetism powder.
The particle size range of the metal soft magnetic alloy particle be 5 μm~120 μm, the phosphorus acid passivation layer with a thickness of
10nm~500nm, the weight of the phosphorus acid passivation layer are the 0.01%~5% of the metal soft magnetic alloy particle weight,
The inorganic powder clad with a thickness of 200nm~1 μm, the weight of the inorganic powder clad is the metal
The 0.2%~2% of magnetically soft alloy particle weight；The organic resin solidify cladding film layer with a thickness of 200nm~1 μm, institute
The weight that the organic resin stated solidifies cladding film layer is the 0.2%~2% of the metal soft magnetic alloy particle weight, described
The uncured clad of organic resin with a thickness of 200nm~1 μm, the weight of the uncured clad of the organic resin is described
Metal soft magnetic alloy particle weight 0.2%~2%, the lubricant layer with a thickness of 500nm~3 μm, the profit
The weight of lubrication prescription layer is the 0.2%~2% of the metal soft magnetic alloy particle weight.
The material of metal soft magnetic alloy particle in soft magnetic granules material described in every kind is respectively iron silicochromium, iron silicon, carbonyl
Any one in base iron powder, iron nickel and iron sial, the material of the inorganic powder clad in soft magnetic granules material described in every kind
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind institute
The material that the organic resin in soft magnetic granules material stated solidifies cladding film layer is respectively epoxy resin, organic siliconresin, insatiable hunger
With in polyester resin and phenolic resin any one or at least two mixture；In soft magnetic granules material described in every kind
The material of the uncured clad of organic resin be respectively epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic aldehyde tree
In rouge any one or at least two mixture；The material of lubricant layer in soft magnetic granules material described in every kind point
Not Wei in zinc stearate powder, hard magnesium powder and aluminum stearate powder any one or at least two mixture.
The partial size of the alumina powder, the magnesium oxide powder and the silicon oxide powder is respectively 200nm
The partial size of~500nm, the zinc stearate powder, the hard magnesium powder and the aluminum stearate powder is respectively
200nm~3 μm.
Compared with prior art, the advantages of molding inductance preparation method of soft magnetism powder of the invention, is by gold
Belong to magnetically soft alloy particle surface and sequentially forms phosphorus acid passivation layer, inorganic powder clad, organic resin solidification clad, You Jishu
The uncured clad of rouge and lubricant layer are formed using metal soft magnetic alloy particle as the core-shell structure copolymer mechanism of the multilayer coating structure of core, often
One layer can all play the role of anti-corrosion protection, and this method directly forms corrosion-resistant protective layer in metal soft magnetic alloy particle surface,
Antirust treatment is carried out to each metal soft magnetic alloy particle, the soft magnetism powder pressure thus prepared using method of the invention
The molding inductance being made can obtain higher corrosion resistance under conditions of not having to spraying protective paint.
Detailed description of the invention
Fig. 1 is the cross-sectional view of soft magnetic granules material in the anti-corrosion molding inductance soft magnetism powder of height of the invention；
Fig. 2 for using metal soft magnetic alloy particle powder suppressed molding inductance 24H salt fog figure；
Fig. 3 is the 24H salt fog figure for the molding inductance suppressed using the anti-corrosion molding inductance soft magnetism powder of height of the invention.
Specific embodiment
The invention discloses a kind of high anti-corrosion molding inductance soft magnetism powders, below in conjunction with figure embodiment to of the invention
High anti-corrosion molding inductance is described in further detail with soft magnetism powder.
Embodiment one: as shown in Figure 1, a kind of high anti-corrosion molding inductance soft magnetism powder, including at least one soft magnetic granules
Material, every kind of soft magnetic granules material respectively include metal soft magnetic alloy particle 1, phosphorus acid passivation layer 2, inorganic powder clad 3, have
Machine resin solidification coats film layer 4, the uncured clad 5 of organic resin and lubricant layer 6, and it is soft that phosphorus acid passivation layer 2 is coated on metal
1 outer surface of magnetic alloy particle, inorganic powder clad 3 are coated on 2 outer surface of phosphorus acid passivation layer, organic resin solidification cladding film layer
4 are coated on 3 outer surface of inorganic powder clad, and the uncured clad 5 of organic resin is coated on organic resin solidification cladding film layer 4
Outer surface, lubricant layer 6 are coated on uncured 5 outer surface of clad of organic resin.
In the present embodiment, the partial size of metal soft magnetic alloy particle 1 is 5 μm, phosphorus acid passivation layer 2 with a thickness of 10nm, phosphoric acid
The weight of passivation layer 2 be 1 weight of metal soft magnetic alloy particle 0.01%, inorganic powder clad 3 with a thickness of 200nm, nothing
The weight of machine powder clad 3 is the 0.2% of 1 weight of metal soft magnetic alloy particle；Organic resin solidifies the thickness of cladding film layer 4
For 200nm, the weight that organic resin solidifies cladding film layer 4 is the 0.2% of 1 weight of metal soft magnetic alloy particle, and organic resin is non-
Solidify clad 5 with a thickness of 200nm, the weight of the uncured clad 5 of organic resin is 1 weight of metal soft magnetic alloy particle
0.2%, lubricant layer 6 with a thickness of 500nm~, the weight of lubricant layer 6 is the 0.2% of 1 weight of metal soft magnetic alloy particle.
In the present embodiment, the material of the metal soft magnetic alloy particle 1 in every kind of soft magnetic granules material is respectively iron silicochromium, iron
Any one in silicon, carbonyl iron dust, iron nickel and iron sial, the material of the inorganic powder clad 3 in every kind of soft magnetic granules material
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind soft
The material that organic resin in magnetic granule materials solidifies cladding film layer 4 is respectively epoxy resin, organic siliconresin, unsaturated polyester (UP)
In resin and phenolic resin any one or at least two mixture；Organic resin in every kind of soft magnetic granules material is non-
It is respectively any one in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin for solidifying the material of clad 5
Kind or at least two mixture；The material of lubricant layer 6 in every kind of soft magnetic granules material be respectively zinc stearate powder,
In hard magnesium powder and aluminum stearate powder any one or at least two mixture.
In the present embodiment, the partial size of alumina powder, magnesium oxide powder and silicon oxide powder is respectively 200nm, stearic acid
The partial size of zinc powder, hard magnesium powder and aluminum stearate powder is respectively 200nm.
Embodiment two: a kind of high anti-corrosion molding inductance soft magnetism powder, including at least one soft magnetic granules material, every kind soft
Magnetic granule materials respectively include metal soft magnetic alloy particle 1, phosphorus acid passivation layer 2, inorganic powder clad 3, organic resin solidification
Cladding film layer 4, the uncured clad 5 of organic resin and lubricant layer 6, phosphorus acid passivation layer 2 are coated on metal soft magnetic alloy particle 1
Outer surface, inorganic powder clad 3 are coated on 2 outer surface of phosphorus acid passivation layer, and organic resin solidification cladding film layer 4 is coated on inorganic
3 outer surface of powder clad, the uncured clad 5 of organic resin are coated on organic resin solidification cladding 4 outer surface of film layer, lubrication
Oxidant layer 6 is coated on uncured 5 outer surface of clad of organic resin.
In the present embodiment, the partial size of metal soft magnetic alloy particle 1 is 120 μm, phosphorus acid passivation layer 2 with a thickness of 500nm, phosphorus
The weight of sour passivation layer 2 is the 5% of 1 weight of metal soft magnetic alloy particle, inorganic powder clad 3 with a thickness of 1 μm, inorganic powder
The weight of last clad 3 is the 2% of 1 weight of metal soft magnetic alloy particle；Organic resin solidify cladding film layer 4 with a thickness of 1 μm,
The weight that organic resin solidifies cladding film layer 4 is the 2% of 1 weight of metal soft magnetic alloy particle, the uncured clad 5 of organic resin
With a thickness of 1 μm, the weight of the uncured clad 5 of organic resin is the 2% of 1 weight of metal soft magnetic alloy particle, lubricant layer 6
With a thickness of 3 μm, the weight of lubricant layer 6 is the 2% of 1 weight of metal soft magnetic alloy particle.
In the present embodiment, the material of the metal soft magnetic alloy particle 1 in every kind of soft magnetic granules material is respectively iron silicochromium, iron
Any one in silicon, carbonyl iron dust, iron nickel and iron sial, the material of the inorganic powder clad 3 in every kind of soft magnetic granules material
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind soft
The material that organic resin in magnetic granule materials solidifies cladding film layer 4 is respectively epoxy resin, organic siliconresin, unsaturated polyester (UP)
In resin and phenolic resin any one or at least two mixture；Organic resin in every kind of soft magnetic granules material is non-
It is respectively any one in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin for solidifying the material of clad 5
Kind or at least two mixture；The material of lubricant layer 6 in every kind of soft magnetic granules material be respectively zinc stearate powder,
In hard magnesium powder and aluminum stearate powder any one or at least two mixture.
In the present embodiment, the partial size of alumina powder, magnesium oxide powder and silicon oxide powder is respectively 500nm, stearic acid
The partial size of zinc powder, hard magnesium powder and aluminum stearate powder is respectively 3 μm.
The invention also discloses a kind of preparation methods of high anti-corrosion molding inductance soft magnetism powder, implement below in conjunction with attached drawing
Example is described in further detail the anti-corrosion molding inductance of height of the invention with soft magnetism powder.
A kind of embodiment one: preparation method of high anti-corrosion molding inductance soft magnetism powder, comprising the following steps:
(1) 1 material of metal soft magnetic alloy particle of required weight is weighed；
(2) phosphoric acid for weighing required weight, phosphoric acid is dissolved in alcohol, obtains passivating solution；
(3) passivating solution is mixed with 1 material of metal soft magnetic alloy particle, is stirred in 30 DEG C~80 DEG C of isoperibol blunt
Change 60min the alcohol contained in passivating solution volatilizees, the phosphoric acid contained in passivating solution is evenly coated at metal soft magnetic alloy particle 1
Surface of material forms phosphorus acid passivation layer 2, obtains the first granule materials；
(4) inorganic particle for weighing required weight stirs evenly after mixing inorganic particle with the first granule materials, inorganic
Powder is evenly coated at the first granule materials surface and forms inorganic powder clad 3, obtains the second granule materials；
(5) the first resin and acetone are mixed to get the first resin solution by the first resin for weighing required weight；
(6) the first resin solution is mixed with the second granule materials, is first stirred in 30 DEG C~80 DEG C of isoperibol
60min volatilizees acetone, then 60 DEG C~200 DEG C at a temperature of make the first resin solidification, the first resin is coated at this time
Two granule materials surfaces form organic resin solidification cladding film layer 4, obtain third granule materials；
(7) the second resin and acetone are mixed to get the second resin solution by the second resin for weighing required weight；
(8) the second resin solution is mixed with third granule materials, stirs 60min in 30 DEG C~80 DEG C of isoperibol
Acetone is volatilized, then 60 DEG C -80 DEG C at a temperature of dry, the second resin is coated on third granule materials surface and is formed at this time
The uncured clad 5 of organic resin, obtains the 4th granule materials；
(9) the lubricant powder for weighing required weight mixes lubricant powder with the 4th granule materials, uniform stirring
60min makes lubricant powder be evenly coated at the 4th granule materials surface and forms lubricant layer 6, obtains soft magnetic granules material；
(10) the soft magnetic granules material for weighing corresponding weight constitutes high anti-corrosion molding inductance soft magnetism powder.
In the present embodiment, the partial size of metal soft magnetic alloy particle 1 is 5 μm, phosphorus acid passivation layer 2 with a thickness of 10nm, phosphoric acid
The weight of passivation layer 2 be 1 weight of metal soft magnetic alloy particle 0.01%, inorganic powder clad 3 with a thickness of 200nm, nothing
The weight of machine powder clad 3 is the 0.2% of 1 weight of metal soft magnetic alloy particle；Organic resin solidifies the thickness of cladding film layer 4
For 200nm, the weight that organic resin solidifies cladding film layer 4 is the 0.2% of 1 weight of metal soft magnetic alloy particle, and organic resin is non-
Solidify clad 5 with a thickness of 200nm, the weight of the uncured clad 5 of organic resin is 1 weight of metal soft magnetic alloy particle
0.2%, lubricant layer 6 with a thickness of 500nm, the weight of lubricant layer 6 is the 0.2% of 1 weight of metal soft magnetic alloy particle.
In the present embodiment, the material of the metal soft magnetic alloy particle 1 in every kind of soft magnetic granules material is respectively iron silicochromium, iron
Any one in silicon, carbonyl iron dust, iron nickel and iron sial, the material of the inorganic powder clad 3 in every kind of soft magnetic granules material
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind soft
The material that organic resin in magnetic granule materials solidifies cladding film layer 4 is respectively epoxy resin, organic siliconresin, unsaturated polyester (UP)
In resin and phenolic resin any one or at least two mixture；Organic resin in every kind of soft magnetic granules material is non-
It is respectively any one in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin for solidifying the material of clad 5
Kind or at least two mixture；The material of lubricant layer 6 in every kind of soft magnetic granules material be respectively zinc stearate powder,
In hard magnesium powder and aluminum stearate powder any one or at least two mixture.
In the present embodiment, the partial size of alumina powder, magnesium oxide powder and silicon oxide powder is respectively 200nm, stearic acid
The partial size of zinc powder, hard magnesium powder and aluminum stearate powder is respectively 200nm.
A kind of embodiment two: preparation method of high anti-corrosion molding inductance soft magnetism powder, comprising the following steps:
(1) 1 material of metal soft magnetic alloy particle of required weight is weighed；
(2) phosphoric acid for weighing required weight, phosphoric acid is dissolved in alcohol, obtains passivating solution；
(3) passivating solution is mixed with 1 material of metal soft magnetic alloy particle, is stirred in 30 DEG C~80 DEG C of isoperibol blunt
Change 60min the alcohol contained in passivating solution volatilizees, the phosphoric acid contained in passivating solution is evenly coated at metal soft magnetic alloy particle 1
Surface of material forms phosphorus acid passivation layer 2, obtains the first granule materials；
(4) inorganic particle for weighing required weight stirs evenly after mixing inorganic particle with the first granule materials, inorganic
Powder is evenly coated at the first granule materials surface and forms inorganic powder clad 3, obtains the second granule materials；
(5) the first resin and acetone are mixed to get the first resin solution by the first resin for weighing required weight；
(6) the first resin solution is mixed with the second granule materials, is first stirred in 30 DEG C~80 DEG C of isoperibol
60min volatilizees acetone, then 60 DEG C~200 DEG C at a temperature of make the first resin solidification, the first resin is coated at this time
Two granule materials surfaces form organic resin solidification cladding film layer 4, obtain third granule materials；
(7) the second resin and acetone are mixed to get the second resin solution by the second resin for weighing required weight；
(8) the second resin solution is mixed with third granule materials, stirs 60min in 30 DEG C~80 DEG C of isoperibol
Acetone is volatilized, then 60 DEG C -80 DEG C at a temperature of dry, the second resin is coated on third granule materials surface and is formed at this time
The uncured clad 5 of organic resin, obtains the 4th granule materials；
(9) the lubricant powder for weighing required weight mixes lubricant powder with the 4th granule materials, uniform stirring
60min makes lubricant powder be evenly coated at the 4th granule materials surface and forms lubricant layer 6, obtains soft magnetic granules material；
(10) the soft magnetic granules material for weighing corresponding weight constitutes high anti-corrosion molding inductance soft magnetism powder.
In the present embodiment, the partial size of metal soft magnetic alloy particle 1 is 120 μm, phosphorus acid passivation layer 2 with a thickness of 500nm, phosphorus
The weight of sour passivation layer 2 is the 5% of 1 weight of metal soft magnetic alloy particle, inorganic powder clad 3 with a thickness of 1 μm, inorganic powder
The weight of last clad 3 is the 2% of 1 weight of metal soft magnetic alloy particle；Organic resin solidify cladding film layer 4 with a thickness of 1 μm,
The weight that organic resin solidifies cladding film layer 4 is the 2% of 1 weight of metal soft magnetic alloy particle, the uncured clad 5 of organic resin
With a thickness of 1 μm, the weight of the uncured clad 5 of organic resin is the 2% of 1 weight of metal soft magnetic alloy particle, lubricant layer 6
With a thickness of 3 μm, the weight of lubricant layer 6 is the 2% of 1 weight of metal soft magnetic alloy particle.
In the present embodiment, the material of the metal soft magnetic alloy particle 1 in every kind of soft magnetic granules material is respectively iron silicochromium, iron
Any one in silicon, carbonyl iron dust, iron nickel and iron sial, the material of the inorganic powder clad 3 in every kind of soft magnetic granules material
Material is the mixture of any one or at least two in alumina powder, magnesium oxide powder and silicon oxide powder；Every kind soft
The material that organic resin in magnetic granule materials solidifies cladding film layer 4 is respectively epoxy resin, organic siliconresin, unsaturated polyester (UP)
In resin and phenolic resin any one or at least two mixture；Organic resin in every kind of soft magnetic granules material is non-
It is respectively any one in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin for solidifying the material of clad 5
Kind or at least two mixture；The material of lubricant layer 6 in every kind of soft magnetic granules material be respectively zinc stearate powder,
In hard magnesium powder and aluminum stearate powder any one or at least two mixture.
In the present embodiment, the partial size of alumina powder, magnesium oxide powder and silicon oxide powder is respectively 500nm, stearic acid
The partial size of zinc powder, hard magnesium powder and aluminum stearate powder is respectively 3 μm.
The anti-corrosion molding inductance soft magnetism powder of height and metal soft magnetic alloy particle powder of the invention is respectively adopted and prepares mould
Voltage inductance, wherein using metal soft magnetic alloy particle powder suppressed molding inductance 24H salt fog figure as shown in Fig. 2, using
The 24H salt fog figure for the molding inductance that high anti-corrosion molding inductance soft magnetism powder of the invention is suppressed is as shown in Figure 3.Analysis chart 2
With Fig. 3 it is found that using metal soft magnetic alloy particle powder suppressed molding inductance 24H salt spray test after, surface have it is bright
Aobvious rusty stain, and after the 24H salt fog for the molding inductance for using the anti-corrosion molding inductance soft magnetism powder of height of the invention to be suppressed, table
Face does not generate any rusty stain.
Claims (8)
1. a kind of high anti-corrosion molding inductance soft magnetism powder, including at least one soft magnetic granules material, it is characterised in that every kind of institute
It is solid that the soft magnetic granules material stated respectively includes metal soft magnetic alloy particle, phosphorus acid passivation layer, inorganic powder clad, organic resin
Change cladding film layer, the uncured clad of organic resin and lubricant layer, it is soft that the phosphorus acid passivation layer is coated on the metal
Magnetic alloy particle exterior surface, the inorganic powder clad are coated on the phosphorus acid passivation layer outer surface, and described is organic
Resin solidification cladding film layer is coated on the inorganic powder clad outer surface, the uncured clad packet of the organic resin
The organic resin solidification cladding film layer outer surface is overlayed on, it is uncured that the lubricant layer is coated on the organic resin
Clad outer surface.
2. a kind of high anti-corrosion molding inductance soft magnetism powder according to claim 1, it is characterised in that the metal is soft
The particle size range of magnetic alloy particle be 5 μm~120 μm, the phosphorus acid passivation layer with a thickness of 10nm~500nm, the phosphorus
The weight of sour passivation layer is the 0.01%~5% of the metal soft magnetic alloy particle weight, the inorganic powder clad
With a thickness of 200nm~1 μm, the weight of the inorganic powder clad is the metal soft magnetic alloy particle weight
0.2%~2%；The organic resin solidify cladding film layer with a thickness of 200nm~1 μm, the organic resin solidifies packet
The weight of coating layer is the 0.2%~2% of the metal soft magnetic alloy particle weight, the uncured cladding of the organic resin
Layer with a thickness of 200nm~1 μm, the weight of the uncured clad of the organic resin is the metal soft magnetic alloy particle
The 0.2%~2% of weight, the lubricant layer with a thickness of 500nm~3 μm, the weight of the lubricant layer is described
Metal soft magnetic alloy particle weight 0.2%~2%.
3. a kind of high anti-corrosion molding inductance soft magnetism powder according to claim 2, it is characterised in that soft described in every kind
The material of metal soft magnetic alloy particle in magnetic granule materials is respectively in iron silicochromium, iron silicon, carbonyl iron dust, iron nickel and iron sial
Any one, the material of the inorganic powder clad in soft magnetic granules material described in every kind is alumina powder, magnesia
In powder and silicon oxide powder any one or at least two mixture；Having in soft magnetic granules material described in every kind
The material that machine resin solidification coats film layer is respectively in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin
Any one or at least two mixture；The uncured clad of organic resin in soft magnetic granules material described in every kind
Material be respectively in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin any one or at least
Two kinds of mixture；The material of lubricant layer in soft magnetic granules material described in every kind is respectively zinc stearate powder, hard
In sour magnesium dust and aluminum stearate powder any one or at least two mixture.
4. a kind of high anti-corrosion molding inductance soft magnetism powder according to claim 3, it is characterised in that the aluminium oxide
The partial size of powder, the magnesium oxide powder and the silicon oxide powder is respectively 200nm~500nm, the stearic acid
The partial size of zinc powder, the hard magnesium powder and the aluminum stearate powder is respectively 200nm~3 μm.
5. a kind of preparation method of high anti-corrosion molding inductance soft magnetism powder, it is characterised in that the following steps are included:
(1) the metal soft magnetic alloy granule materials of required weight are weighed；
(2) phosphoric acid for weighing required weight, phosphoric acid is dissolved in alcohol, obtains passivating solution；
(3) passivating solution is mixed with metal soft magnetic alloy granule materials, passivation is stirred in 30 DEG C~80 DEG C of isoperibol
60min volatilizees the alcohol contained in passivating solution, and the phosphoric acid contained in passivating solution is evenly coated at metal soft magnetic alloy particulate matter
Expect that surface forms phosphorus acid passivation layer, obtains the first granule materials；
(4) inorganic particle for weighing required weight stirs evenly, nothing after mixing inorganic particle with first granule materials
Machine powder is evenly coated at the first granule materials surface and forms inorganic powder clad, obtains the second granule materials；
(5) the first resin and acetone are mixed to get the first resin solution by the first resin for weighing required weight；
(6) the first resin solution is mixed with the second granule materials, 60min is first stirred in 30 DEG C~80 DEG C of isoperibol will
Acetone volatilization, then 60 DEG C~200 DEG C at a temperature of make the first resin solidification, the first resin is coated on the second particulate matter at this time
Material surface forms organic resin solidification cladding film layer, obtains third granule materials；
(7) the second resin and acetone are mixed to get the second resin solution by the second resin for weighing required weight；
(8) the second resin solution is mixed with third granule materials, 60min is stirred in 30 DEG C~80 DEG C of isoperibol by third
Ketone volatilization, then 60 DEG C -80 DEG C at a temperature of dry, at this time the second resin be coated on third granule materials surface formed it is organic
The uncured clad of resin, obtains the 4th granule materials；
(9) the lubricant powder for weighing required weight mixes lubricant powder with the 4th granule materials, uniform stirring 60min,
So that lubricant powder is evenly coated at the 4th granule materials surface and form lubricant layer, obtains soft magnetic granules material；
(10) the soft magnetic granules material for weighing corresponding weight constitutes high anti-corrosion molding inductance soft magnetism powder.
6. a kind of preparation method of high anti-corrosion molding inductance soft magnetism powder according to claim 5, it is characterised in that institute
The particle size range for the metal soft magnetic alloy particle stated be 5 μm~120 μm, the phosphorus acid passivation layer with a thickness of 10nm~
500nm, the weight of the phosphorus acid passivation layer is the 0.01%~5% of the metal soft magnetic alloy particle weight, described
Inorganic powder clad with a thickness of 200nm~1 μm, the weight of the inorganic powder clad is that the soft magnetic metal closes
The 0.2%~2% of gold particle weight；The organic resin solidify cladding film layer with a thickness of 200nm~1 μm, described has
The weight that machine resin solidification coats film layer is the 0.2%~2% of the metal soft magnetic alloy particle weight, organic tree
The uncured clad of rouge with a thickness of 200nm~1 μm, the weight of the uncured clad of the organic resin is the metal
The 0.2%~2% of magnetically soft alloy particle weight, the lubricant layer with a thickness of 500nm~3 μm, the lubricant layer
Weight be the metal soft magnetic alloy particle weight 0.2%~2%.
7. a kind of preparation method of high anti-corrosion molding inductance soft magnetism powder according to claim 5, it is characterised in that every
The material of the metal soft magnetic alloy particle in soft magnetic granules material described in kind is respectively iron silicochromium, iron silicon, carbonyl iron dust, iron nickel
With any one in iron sial, the material of the inorganic powder clad in soft magnetic granules material described in every kind is alumina powder
In end, magnesium oxide powder and silicon oxide powder any one or at least two mixture；Soft magnetic granules described in every kind
Organic resin in material solidify cladding film layer material be respectively epoxy resin, organic siliconresin, unsaturated polyester resin and
In phenolic resin any one or at least two mixture；Organic resin in soft magnetic granules material described in every kind is non-
It is respectively any one in epoxy resin, organic siliconresin, unsaturated polyester resin and phenolic resin for solidifying the material of clad
Kind or at least two mixture；The material of lubricant layer in soft magnetic granules material described in every kind is respectively zinc stearate
In powder, hard magnesium powder and aluminum stearate powder any one or at least two mixture.
8. a kind of preparation method of high anti-corrosion molding inductance soft magnetism powder according to claim 7, it is characterised in that institute
The partial size of alumina powder, the magnesium oxide powder and the silicon oxide powder stated is respectively 200nm~500nm, institute
The partial size of zinc stearate powder, the hard magnesium powder and the aluminum stearate powder stated is respectively the μ of 200nm~3
m。
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| CN110918979A (en) * | 2019-10-30 | 2020-03-27 | 宁波市普盛磁电科技有限公司 | Magnetic core powder spraying film-forming agent and application method thereof |
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Application publication date: 20190514 |