CN107403676A - Compressed-core and its manufacture method, possess the inductor of the compressed-core and be equipped with the electronic/electrical gas equipment of the inductor - Google Patents
Compressed-core and its manufacture method, possess the inductor of the compressed-core and be equipped with the electronic/electrical gas equipment of the inductor Download PDFInfo
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- CN107403676A CN107403676A CN201710264626.7A CN201710264626A CN107403676A CN 107403676 A CN107403676 A CN 107403676A CN 201710264626 A CN201710264626 A CN 201710264626A CN 107403676 A CN107403676 A CN 107403676A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/08—Cores, Yokes, or armatures made from powder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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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
- H01F1/012—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials adapted for magnetic entropy change by magnetocaloric effect, e.g. used as magnetic refrigerating material
- H01F1/015—Metals or alloys
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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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/06—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 hard-magnetic materials metals or alloys in the form of particles, e.g. powder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
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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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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Abstract
On the powder containing crystalline magnetic material and the compressed-core of the powder of noncrystalline magnetic material, there is provided insulation voltage endurance is excellent and realizes the compressed-core for the good inductor that iron loss reduces.Compressed-core (1) is the powder of the powder containing crystalline magnetic material and noncrystalline magnetic material, and the content of the powder of the crystalline magnetic material is that the first blending ratio is more than 40 mass % and below 90 mass % relative to the quality ratio of the content and the summation of the content of the powder of the noncrystalline magnetic material of the powder of the crystalline magnetic material.
Description
Technical field
The present invention relates to compressed-core, the compressed-core manufacture method, possess the compressed-core inductor and dress
Electronic/electrical gas equipment equipped with the inductor.In this manual, so-called " inductor " is that possess the core comprising compressed-core
And the passive element of coil, the concept comprising reactor.
Background technology
Booster circuit in hybrid motor vehicle etc., for generating electricity, the reactor of transformer, transformer, choke coil
It can be obtained Deng the compressed-core used in inductor by carrying out press-powder shaping to soft magnetic powder.Possesses such press-powder
The inductor of magnetic core requires that iron loss is low and insulation voltage endurance is excellent (in the present invention, it is meant that applying direct current to inductor
The voltage (breakdown voltage) that insulation breakdown is produced when voltage or frequency are below 60Hz alternating voltage is high.).
In patent document 1, as the scheme for the decline for improving insulaion resistance in high temperature environments, disclose by iron
In the mictomagnetism powder that the crystalline alloy magnetic powder of system mixes with the amorphous alloy magnetic powder of iron system, crystalline is closed
The match ratio of golden magnetic powder and amorphous alloy magnetic powder is set to 60~90wt%, 40~10wt% composite magnetic material
Material.
In patent document 2, as the good scheme of the insulating properties and corrosion resistance of compressed-core is made, disclose by mixing
The Combination material powder and insulating properties that the Fe-Cr series alloy powders of the powder and crystalline that close amorphous magnetic alloy form
In the core material that binding agent is formed, the blending ratio of the powder of amorphous magnetic alloy and Fe-Cr series alloy powders is set to
The composite magnetic that Fe-Cr series alloy powders weight rate shared in mictomagnetism material powder is 10~60wt%.
Citation
Patent document 1：Japanese Unexamined Patent Publication 2004-197218 publications
Patent document 2：Japanese Unexamined Patent Publication 2007-134381 publications
Invent problem to be solved
Patent document 1 and patent document 2 are conceived to the compressed-core when the cooperation quantitative change of crystalline alloy powder is more
Insulaion resistance decline, by the cooperation for adjusting the crystalline alloy magnetic powder in mictomagnetism powder and amorphous alloy magnetic powder
Than preventing the decline of insulaion resistance.But patent document 1 and patent document 2 do not carry out the pressure-resistant spy of insulation of compressed-core
The evaluation of property.
The content of the invention
Then, it is an object of the invention to provide the powder containing crystalline magnetic material and noncrystalline magnetic material
The compressed-core of powder, the insulation voltage endurance of the compressed-core is excellent, and realizes the good inductor that iron loss reduces.This
The purpose of invention, which is lain also in, to be provided the manufacture method of above-mentioned compressed-core, possesses the inductor of the compressed-core and be equipped with
The electronic/electrical gas equipment of the inductor.
For solving the scheme of problem
In order to solve above-mentioned problem, the present inventor etc. is inquired into, and has as a result obtained following new opinion：By to institute
State content and the noncrystalline of the content of the powder of crystalline magnetic material relative to the powder of the crystalline magnetic material
The quality ratio of the summation of the content of the powder of magnetic material is that the first blending ratio is suitably adjusted, it is possible to increase press-powder
The insulation voltage endurance of magnetic core, in a preferable mode, the crystalline magnetic material contained by compressed-core can be exceeded
Powder and noncrystalline magnetic material powder the scope that deduces of blending ratio, make the insulation of compressed-core resistance to non-linearly
Pressure characteristic improves and realized the good inductor that iron loss reduces.
The invention completed based on such cognition is as follows.
The mode of the present invention is a kind of compressed-core, and it contains the powder of crystalline magnetic material and noncrystalline magnetic
The powder of property material, wherein, the content of the powder of the crystalline magnetic material relative to the crystalline magnetic material powder
The quality ratio of the content at end and the summation of the content of the powder of the noncrystalline magnetic material is that the first blending ratio is 40 matter
Measure more than % and below 90 mass %.
In the case where above-mentioned first blending ratio meets above-mentioned relation, can exceed by the crystalline magnetic material
Or the scope that the powder monomer of the noncrystalline magnetic material speculates, non-linearly carry the insulation voltage endurance of compressed-core
It is high and reduce the iron loss of inductor.
First blending ratio of the compressed-core can also be more than 50 mass % and below 70 mass %.
The insulation pressure voltage of the compressed-core can also will only contain the powder of the noncrystalline magnetic material as
It is more than 120% when the insulation pressure voltage of the compressed-core of Magnaglo is as benchmark 100%.
The insulation pressure voltage of the compressed-core can also will only contain the powder of the crystalline magnetic material as
It is more than 110% when the insulation pressure voltage of the compressed-core of Magnaglo is as benchmark 100%.
The crystalline magnetic material can also include to be closed from by Fe-Si-Cr systems alloy, Fe-Ni systems alloy, Fe-Co systems
In the group that gold, Fe-V systems alloy, Fe-A1 systems alloy, Fe-Si systems alloy, Fe-Si-Al systems alloy, carbonyl iron and pure iron are formed
One or more kinds of materials of selection.
The crystalline magnetic material is preferably made up of Fe-Si-Cr systems alloy.
The noncrystalline magnetic material can also be included from by Fe-Si-B systems alloy, Fe-P-C systems alloy and Co-Fe-
The one or more kinds of materials selected in the group that Si-B systems alloy is formed.
The noncrystalline magnetic material is preferably made up of Fe-P-C systems alloy.
The powder of the crystalline magnetic material is preferably made up of the material for implementing insulation processing.By implementing insulation position
Reason, can more stably realize compressed-core insulation voltage endurance, insulaion resistance raising, high band iron loss drop
It is low.
The compressed-core, which can also contain, makes the powder of the crystalline magnetic material and the noncrystalline magnetic material
The bonding component that the powder of material bonds relative to the other materials contained by the compressed-core.In this case, the bonding
Composition preferably comprises the composition based on resin material.
The another way of the present invention is the manufacture method of above-mentioned compressed-core, wherein, possess by adding including mixture
The shaping of pressing formation is handled to obtain the forming process of figuration manufacture thing, and the mixture includes the crystalline magnetic material
Powder, the powder of the noncrystalline magnetic material and the Binder Composition that is made up of the resin material.Pass through the manufacture
Method, it can realize and efficiently manufacture above-mentioned compressed-core.
In above-mentioned manufacture method, the figuration manufacture thing obtained by the forming process can also be the press-powder
Magnetic core.Or can also possess by being heat-treated to obtain the heat treatment step of the compressed-core, the heat treatment is to by institute
The figuration manufacture thing that forming process obtains is stated to be heated.
The present invention another mode be a kind of inductor, it possess above-mentioned compressed-core, coil and with the coil
The connection of each end connection terminal, wherein, at least a portion of the compressed-core with positioned in electric current via the company
Connecting terminal and mode when flowing through the coil as caused by the electric current in induced field configure.The inductor is based on above-mentioned
Compressed-core excellent characteristic, good insulation voltage endurance and low-loss can be taken into account.
The still another way of the present invention is to be equipped with the electronic/electrical gas equipment of above-mentioned inductor, and the inductor passes through institute
State connection terminal and be connected to substrate.As the electronic/electrical gas equipment, illustration, which has, possesses power switch circuit, voltage up-down electricity
The supply unit of road, smooth circuit etc., miniature portable communication equipment etc..The electronic/electrical gas equipment of the present invention is above-mentioned due to possessing
Inductor, therefore easily tackle Towards Higher Voltage, high frequency.
Invention effect
The compressed-core of foregoing invention can improve the press-powder magnetic due to suitably have adjusted the first blending ratio
The insulation voltage endurance of core.In addition, according to the present invention, there is provided the manufacture method of above-mentioned compressed-core, possess the compressed-core
Inductor and be equipped with the electronic/electrical gas equipment of the inductor.
Brief description of the drawings
Fig. 1 is the stereogram of the shape for the compressed-core for conceptually illustrating an embodiment of the invention.
Fig. 2 is the spray-drying installation and its action used in one of the method for being conceptually illustrated in manufacture pelletizing
Figure.
Fig. 3 is the one kind as inductor for conceptually illustrating the compressed-core for possessing an embodiment of the invention
Loop coil shape stereogram.
Fig. 4 is the one kind as inductor for conceptually illustrating the compressed-core for possessing an embodiment of the invention
Coil buried type inductor shape stereogram.
Fig. 5 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 1.
Fig. 6 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 2.
Fig. 7 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 1 and embodiment 2.
Fig. 8 is the powder monomer using noncrystalline magnetic material for showing embodiment 1 and embodiment 2 as each the of benchmark
The curve map of the resistance to pressure ratio of insulation under one blending ratio.
Fig. 9 is the powder monomer using crystalline magnetic material for showing embodiment 1 and embodiment 2 as each the of benchmark
The curve map of the resistance to pressure ratio of insulation under one blending ratio.
Figure 10 is to show the curve map of the insulaion resistance of embodiment 1 to the interdependence of the first blending ratio.
Figure 11 is to show the curve map of the magnetic core density of embodiment 1 to the interdependence of the first blending ratio.
Figure 12 is to show the curve map of the magnetic conductivity of embodiment 1 to the interdependence of the first blending ratio.
Figure 13 is to show the curve map of the insulaion resistance of embodiment 2 to the interdependence of the first blending ratio.
Figure 14 is to show the curve map of the magnetic core density of embodiment 2 to the interdependence of the first blending ratio.
Figure 15 is to show the curve map of the magnetic conductivity of embodiment 2 to the interdependence of the first blending ratio.
Description of reference numerals：
1... compressed-core (toroidal core)
10... loop coil
2... it is coated to wire
2a... coils
2b, 2c... are coated to the end of wire 2
2d, 2e... coil 2a end
20... coil buried type inductor
21... compressed-core
22... it is coated to wire
22a, 22b... end
23a, 23b... connect end
22c... coil portions
200... spray-drying installation
201... rotor
S... slurry
P... pelletizing
Embodiment
Hereinafter, embodiments of the present invention are described in detail.
1. compressed-core
The compressed-core 1 of an embodiment of the invention shown in Fig. 1 is the toroidal core that its outward appearance is ring-type, is contained
The powder of crystalline magnetic material and the powder of noncrystalline magnetic material.The compressed-core 1 of present embodiment is by possessing
The compressed-core of the manufacture method manufacture of shaping processing, shaping processing include adding the mixture comprising above-mentioned powder
Pressing formation.As one not be defined, the compressed-core 1 of present embodiment contain the powder that makes crystalline magnetic material and
The powder of noncrystalline magnetic material relative to contained by compressed-core 1 other materials (situation of promising same material, it is also promising
The not situation of same material.) bond bonding component.
(1) powder of crystalline magnetic material
The crystalline of the powder for the crystalline magnetic material that the compressed-core 1 of offer an embodiment of the invention contains
As long as magnetic material meets (by common X-ray diffraction measure, to obtain having and can determine material category for crystalline
The difraction spectrum of the clear and definite peak value of degree) and be ferromagnetic, especially soft-magnetic body, then specific species is not limited.
As the specific example of crystalline magnetic material, can enumerate Fe-Si-Cr systems alloy, Fe-Ni systems alloy, Fe-Co systems alloy,
Fe-V systems alloy, Fe-Al systems alloy, Fe-Si systems alloy, Fe-Si-Al systems alloy, carbonyl iron and pure iron.Above-mentioned crystalline
Magnetic material can be made up of a kind of material, can also be made up of multiple material.The knot of the powder of crystalline magnetic material is provided
Crystalloid magnetic material is preferably the one or more kinds of materials selected from the group being made up of above-mentioned material, wherein, it is excellent
Choosing contains Fe-Si-Cr systems alloy, is more preferably made up of Fe-Si-Cr systems alloy.Fe-Si-Cr systems alloy is in crystalline magnetic material
It is that can make iron loss Pcv than relatively low material in material, therefore even if improves the powder of the crystalline magnetic material in compressed-core 1
The content at end is relative to the summation of the content of the powder of content and the noncrystalline magnetic material of the powder of crystalline magnetic material
Quality ratio (is also referred to as " the first blending ratio ") in this manual, does not possess the iron loss Pcv of inductor of compressed-core 1 also not
Easily rise.Si content and Cr content in Fe-Si-Cr systems alloy do not limit., can be with as the illustration not being defined
Enumerate and Si content is set to 2~7 mass % or so, Cr content is set to 2~7 mass % or so.
The shape of the powder for the crystalline magnetic material that the compressed-core 1 of an embodiment of the invention contains does not limit
It is fixed.The shape of powder can be it is spherical can also be non-spherical.Can be flakey, elliptical shape ball in the case of for non-spherical
The such shape with shape anisotropy of shape, droplet-like and needle-like, or without special shape respectively to different
Property it is amorphous.As the example of unbodied powder, can enumerate multiple spherical powders contact with each other with reference to or with portion
The situation that the mode being buried in other powders with dividing combines.It is easily observed that such unbodied powder in carbonyl iron.
The shape of powder can be the shape obtained in the stage of manufacture powder, or by manufactured powder
Shape obtained from carrying out secondary operation.As the former shape, illustration has spherical, oval spherical, droplet-like, needle-like etc., makees
For the shape of the latter, illustration has flakey.
The particle diameter of the powder for the crystalline magnetic material that the compressed-core 1 of an embodiment of the invention contains does not limit
It is fixed.In the size distribution of volume reference in the powder of crystalline magnetic material, the accumulative particle diameter distribution from small particle side
(it is also referred to as in this manual " median particle diameter " for 50% particle diameter.)D50C has preferably less than 15 μm of situation.With noncrystalline
The powder of magnetic material is compared, and the powder of crystalline magnetic material is soft, therefore the powder of crystalline magnetic material is in press-powder
The possibility of the internal modification of magnetic core 1 is high.Therefore, the size of particle diameter influences relatively low to caused by the characteristic of compressed-core 1.Crystallization
The median particle diameter D of the powder of matter magnetic material50A has preferably less than 10 μm of situation, more preferably less than 5 μm of situation, outstanding
It is preferably less than 2 μm of situation.
The content of the powder of crystalline magnetic material in compressed-core 1 is that the first blending ratio turns into more than 40 mass %
And 90 amount below mass %.Be more than 40 mass % and below 90 mass % by the first blending ratio, so as to only by non-
The situation that crystalloid magnetic material is formed is compared, and the insulation voltage endurance of compressed-core 1 improves.Think carrying for the insulation voltage endurance
Height is due to the powder that compressed-core 1 includes crystalline magnetic material by above range, so as to which insulation breakdown power dissipation is in whole
Body.Based on the viewpoint for making the insulation voltage endurance of compressed-core 1 stably improve, the first blending ratio is more preferably 45 mass %
Below the mass % of the above 85, especially preferably more than 50 mass % below 80 mass %.By the way that the first blending ratio is set in
In above range, for example, D can be used50Noncrystalline magnetic material that A is more than 3 μm 20 μm or so makes the pressure-resistant spy of insulating
The good compressed-core 1 of property.
The insulation pressure voltage of compressed-core 1 is preferably pressure of the powder as Magnaglo for only containing noncrystalline magnetic material
More than 1.2 times of the insulation pressure voltage of powder magnetic core, most preferably more preferably more than 1.25 times, more than 1.3 times.Here, " magnetic
Powder " refers to the powder of the crystalline magnetic material contained by compressed-core 1 and the powder of noncrystalline magnetic material." only contain
Have compressed-core of the powder of the noncrystalline magnetic material as Magnaglo " refer to except by the crystalline in compressed-core
Magnetic material is all replaced into beyond noncrystalline magnetic material, the compressed-core manufactured with identical composition and condition.
It is preferred that at least a portion of the powder of crystalline magnetic material is made up of the material for implementing surface insulation processing, more
It is preferred that the powder of crystalline magnetic material is made up of the material for implementing surface insulation processing.In the powder of crystalline magnetic material
In the case of being implemented with surface insulation processing, the tendency that the insulaion resistance of compressed-core 1 improves is observed.To crystalline magnetic material
The species for the surface insulation processing that the powder of material applies does not limit.Illustration has phosphoric acid processing, phosphate treated, oxidation processes
Deng.
(2) powder of noncrystalline magnetic material
The noncrystalline of the powder for the noncrystalline magnetic material that the compressed-core 1 of offer an embodiment of the invention contains
As long as magnetic material meets (by common X-ray diffraction measure, not obtaining having and can determine material category for noncrystalline
Degree clear and definite peak value difraction spectrum) and ferromagnetic, especially soft-magnetic body, then do not limit specific species.
As the specific example of noncrystalline magnetic material, Fe-Si-B systems alloy, Fe-P-C systems alloy and Co-Fe-Si-B can be enumerated
It is alloy.Above-mentioned noncrystalline magnetic material can be made up of a kind of material, can also be made up of multiple material.Form noncrystalline
The magnetic material of the powder of magnetic material preferably selects one or more kinds of from the group being made up of above-mentioned material
Material, wherein, Fe-P-C systems alloy is preferably comprised, is more preferably made up of Fe-P-C systems alloy.
As the specific example of Fe-P-C systems alloy, composition formula can be enumerated by Fe100 atom %-a-b-c-x-y-z- tNiaSnbCrcPxCyBzSitRepresent, the atom % of the atom % of 0 atom %≤a≤10,0 atom %≤b≤3,0 atom %≤c≤6 are former
It is the atom % of the atom % of the atom % of sub- %, 6.8 atom %≤x≤13,2.2 atom %≤y≤13,0 atom %≤z≤9,0 former
The atom % of sub- %≤t≤7 Fe base amorphous alloys.In above-mentioned composition formula, Ni, Sn, Cr, B and Si are any addition
Element.
Ni addition a is preferably more than 0 atom % and below 6 atom %, and more preferably more than 0 atom % and 4 is former
Sub- below %.Sn addition b is preferably more than 0 atom % and below 2 atom %, can also be more than 1 atom % and 2 is former
Sub- below % scope addition.Cr addition c is preferably more than 0 atom % and below 2 atom %, more preferably 1 atom %
Above and below 2 atom %.P addition x also has the situation preferably more than 8.8 atom %.C addition y is preferably 4 former
Sub- more than % and below 10 atom %, also have preferably more than 5.8 atom % and below 8.8 atom % situation.B addition
Z is preferably more than 0 atom % and below 6 atom %, more preferably more than 0 atom % and below 2 atom %.Si addition t
Preferably more than 0 atom % and below 6 atom %, more preferably more than 0 atom % and below 2 atom %.
The shape of the powder for the noncrystalline magnetic material that the compressed-core 1 of an embodiment of the invention contains does not limit
It is fixed.On the species of the shape of powder, because the situation of the powder with crystalline magnetic material is same thus, the description thereof will be omitted.By
In the relation of manufacture method, also there is noncrystalline magnetic material to easily become spherical or oval spherical situation.It is in addition, general next
Say, compared with crystalline magnetic material, noncrystalline magnetic material is hard, therefore also having preferably makes crystalline magnetic material be non-
It is spherical so as to being allowed to situation about being easily deformed in press molding.
The shape of the powder for the noncrystalline magnetic material that the compressed-core 1 of an embodiment of the invention contains can be
In the shape that the stage of manufacture powder obtains, or the shape as obtained from carrying out secondary operation to manufactured powder
Shape.As the former shape, illustration has spherical, oval spherical, needle-like etc., and as the shape of the latter, illustration has flakey.
The particle diameter of the powder for the noncrystalline magnetic material that the compressed-core 1 of an embodiment of the invention contains has amorphous
The median particle diameter D of the powder of matter magnetic material50A is preferably less than 50 μm of situation.Pass through the powder of noncrystalline magnetic material
Median particle diameter D50A is less than 50 μm, easily reduces iron loss Pcv's while the insulaion resistance of compressed-core 1 is improved so as to have
Situation.Based on the viewpoint for more stably realizing the reduction iron loss Pcv while insulaion resistance of compressed-core 1 is improved, noncrystalline
The median particle diameter D of the powder of magnetic material50A has preferably less than 20 μm of situation, is more preferably less than 10 μm, is further 7 μm
Following situation, especially preferably less than 5 μm of situation.
(3) bonding component
Compressed-core 1 can also contain the powder for making crystalline magnetic material and the powder of noncrystalline magnetic material is relative
In the bonding component that the other materials contained by compressed-core 1 bonds.As long as bonding component is to help to fix present embodiment
Compressed-core 1 contained by crystalline magnetic material powder and noncrystalline magnetic material powder (in this manual.
Above-mentioned powder is collectively referred to as " Magnaglo ".) material, its composition do not limit.As the material for forming bonding component, example
Be shown with resin material and resin material pyrolysis residue (in this manual, these are collectively referred to as " and based on resin material into
Point ".) etc. the material of organic system, the material etc. of inorganic system.As resin material, illustration has acrylic resin, silicone resin, ring
Oxygen tree fat, phenolic resin, urea resin and melmac etc..The bonding component being made up of the material of inorganic system, which illustrates, to be had
The glass based material such as waterglass.Bonding component can be made up of a kind of material, can also be made up of multiple material.Bonding component
It can be the mixture of the material and the material of inorganic system of organic system.
As bonding component, usually using the material of insulating properties.Thereby, it is possible to improve the insulating properties as compressed-core 1.
2. the manufacture method of compressed-core
The manufacture method of the compressed-core 1 of above-mentioned an embodiment of the invention is not particularly limited, but according to
Next the manufacture method illustrated, then compressed-core 1 is manufactured with can realizing higher efficiency.
The manufacture method of the compressed-core 1 of an embodiment of the invention possesses the forming process next illustrated,
Heat treatment step can be also equipped with.
(1) forming process
First, prepare to provide the mixing including the composition of bonding component comprising Magnaglo and in compressed-core 1
Thing.The composition for providing bonding component (is also referred to as " Binder Composition " in this manual.) the both feelings of promising bonding component in itself
The situation of condition, the also promising material different from bonding component.As the specific example of the latter, Binder Composition can be enumerated as tree
Fat material, bonding component are the situation of its pyrolysis residue.
Figuration manufacture thing can be obtained by the shaping processing of the press molding comprising the mixture.Pressurized conditions do not limit
Fixed, composition based on Binder Composition etc. suitably determines.For example, the feelings being made up of in Binder Composition thermosetting resin
Under condition, preferably heated while pressurization, carry out hardening of resin reaction in mould.On the other hand, it is being compressed into
In the case of shape, although plus-pressure is high, not necessarily condition is heated, is the pressurization of short time.
Hereinafter, it is pelletizing to mixture and carries out the situation of compression molding to illustrate in slightly greater detail.Pelletizing
Treatability is excellent, therefore can improve the workability of the process for the compression molding that curring time is short and productivity is excellent.
(1-1) pelletizing
Pelletizing contains Magnaglo and Binder Composition.The content of Binder Composition in pelletizing does not limit.
In the case where the content is too low, Binder Composition is difficult to keep Magnaglo.In addition, the content in Binder Composition is too low
In the case of, in the compressed-core 1 obtained by heat treatment step, it is bonded to by what the pyrolysis residue of Binder Composition was formed
Point be difficult to make numerous Magnaglos each other with other powdered insulations.On the other hand, in the too high levels of above-mentioned Binder Composition
In the case of, the content of the bonding component contained by compressed-core 1 obtained by heat treatment step easily uprises.If press-powder magnetic
The content of bonding component in core 1 uprises, then the magnetic characteristic of compressed-core 1 becomes easily to decline.Therefore, the bonding in pelletizing
The content of agent composition is preferably integrally more than 0.5 mass % and below 5.0 mass % amount relative to pelletizing.Based on more stable
The viewpoint for the possibility that the magnetic characteristic that ground reduces compressed-core 1 declines, the content of the Binder Composition in pelletizing is relative to making
Grain powder is preferably integrally more than 1.0 mass % and below 3.5 mass % amount, more preferably more than 1.2 mass % and 3.0 matter
Measure below % amount.
Pelletizing can also contain the material in addition to above-mentioned powder and Binder Composition.As such material,
Illustrating has lubricant, silane coupling agent, the filler etc. of insulating properties.In the case of containing lubricant, its species does not limit especially
It is fixed.It can be the lubricant of organic system, or the lubricant of inorganic system.As the specific example of the lubricant of organic system,
The metallic soap of zinc stearate, aluminum stearate etc. can be enumerated.The lubricant of organic system gas in heat treatment step as thinking
Change, hardly remain in compressed-core 1.
The manufacture method of pelletizing is not particularly limited.The composition for providing above-mentioned pelletizing can be directly kneaded, and
Obtained mixture is crushed etc. in a known manner to obtain pelletizing, can also be added by being modulated in above-mentioned composition
Decentralized medium (can enumerate water as one.) slurry that forms, make the slurry drying and crush to obtain pelletizing.Can also
Sieved, be classified to control the size distribution of pelletizing after being pulverized.
The one of the method for pelletizing is obtained as by above-mentioned slurry, the side using spray dryer can be enumerated
Method.As shown in Fig. 2 be provided with rotor 201 in spray-drying installation 200, from the top of spray-drying installation 200 towards rotor
201 injection slurry S.Rotor 201 is rotated with defined rotating speed, and centrifugal force is utilized in the chamber inside spray-drying installation 200
Slurry S is set to turn into droplet-shaped and be sprayed.Then hot blast is imported to the chamber inside spray-drying installation 200, thus made small
Contained decentralized medium (water) volatilizees in the state of droplet shape is maintained in the slurry S of drop-wise.As a result, by slurry S
Form pelletizing P.Pelletizing P is reclaimed from the bottom of spray-drying installation 200.The rotating speed of rotor 201, to spray-drying installation
Each parameter such as temperature of the hot blast temperature of importing, chamber lower portion is suitably set in 200.Setting range as these parameters
Specific example, the rotating speed as rotor 201 can enumerate 4000~8000rpm, be imported as into spray-drying installation 200
Hot blast temperature can enumerate 130~170 DEG C, the temperature as chamber lower portion can enumerate 80~90 DEG C.In addition, in chamber
Atmosphere and its pressure are also suitably set.As one, can enumerate will be set to air (air) atmosphere in chamber, be pressed
It is 2mmH that power, which is set to the differential pressure of atmospheric pressure,2O (about 0.02kPa).Can also be resulting further to control by screening etc.
Pelletizing P size distribution.
(1-2) pressurized conditions
Pressurized conditions in compression molding are not particularly limited.The composition of consideration pelletizing, shape of formed products etc. are carried out
Appropriate setting.In the case that plus-pressure in compression molding pelletizing is too low, the mechanical strength of formed products declines.By
This, the treatability for easily producing formed products declines, from the problem of the mechanical strength decline for the compressed-core 1 that formed products obtain.Separately
Outside, the magnetic characteristic of compressed-core 1 also reduces, the situation that insulating properties reduces.On the other hand, adding in compression molding pelletizing
In the case of hypertonia, the shaping dies that making is resistant to the pressure is had any problem.Pressurizeed based on compression is more stably reduced
The possibility that process has undesirable effect to mechanical property, the magnetic characteristic of compressed-core 1, easily carry out a large amount of productions in industrialization ground
Viewpoint, plus-pressure during compression molding pelletizing is preferably more than 0.3GPa and below 2GPa, more preferably more than 0.5GPa
And below 2GPa, especially preferably more than 0.8GPa and below 2GPa.
In compression molding, it can heat while pressurizeed, can also be pressurizeed at normal temperatures.
(2) heat treatment step
The figuration manufacture thing obtained by forming process can be the compressed-core 1 of present embodiment, can also be as following
As explanation, heat treatment step is implemented to figuration manufacture thing and obtains compressed-core 1.
In heat treatment step, by being heated to the figuration manufacture thing obtained by above-mentioned forming process, so that
In the adjustment of the magnetic characteristic carried out based on the distance between amendment Magnaglo and forming process, make what Magnaglo was assigned
Strain relaxes and carries out the adjustment of magnetic characteristic, obtains compressed-core 1.
Heat treatment step is as described above for the purpose for the magnetic characteristic for adjusting compressed-core 1, so that the magnetic of compressed-core 1
Characteristic sets the heat treatment conditions such as heat treatment temperature as most good mode.One as the method for setting heat treatment condition
Example, can enumerate changes the heating-up temperature of figuration manufacture thing, and will heat up retention time under speed and heating-up temperature etc.
Other conditions are set to fixed.
The metewand of the magnetic characteristic of compressed-core 1 when setting heat treatment condition is not particularly limited.As scoring item
Purpose specific example, the iron loss Pcv of compressed-core 1 can be enumerated.In this case, turned into most with the iron loss Pcv of compressed-core 1
Low mode is set to the heating-up temperature of the shape divine force that created the universe.Iron loss Pcv condition determination is suitably set, can as one
With enumerate its frequency is set to 100Hz, effective peakflux density Bm is set to 100mT condition.
Atmosphere during heat treatment is not particularly limited.In the case of for oxidizing atmosphere, the pyrolysis of Binder Composition
Spend the possibility carried out, the possibility of oxidation development of Magnaglo improves, therefore preferably in inert atmospheres such as nitrogen, argons or
It is heat-treated in the reducing atmospheres such as hydrogen.
3. inductor, electronic/electrical gas equipment
The inductor of an embodiment of the invention possesses the compressed-core of above-mentioned an embodiment of the invention
1st, coil and the connection terminal being connected with each end of the coil.Here, at least a portion of compressed-core 1 with positioned at
Mode of the electric current via connection terminal and during flowing through coil as caused by the electric current in induced field configures.The reality of the present invention
The inductor for applying mode possesses the compressed-core 1 of above-mentioned an embodiment of the invention, therefore the voltage endurance that insulate is excellent,
And even if iron loss is not easy to increase in high frequency.Therefore, compared with the inductor of prior art, can also minimize.
As one of such inductor, the loop coil 10 shown in Fig. 3 can be enumerated.Loop coil 10, which possesses, to be passed through
The coil 2a that coated wire 2 is wound on the compressed-core (loop coil) 1 of ring-type and is formed.Coated led positioned at by what is wound
Line 2 form coil 2a and coated wire 2 end 2b, 2c between wire part, can define coil 2a end 2d,
2e.Like this, the component of the composition coil of the inductor of present embodiment can also be by same with forming the component of connection terminal
Component is formed.
As another example of the inductor of an embodiment of the invention, the coil buried type shown in Fig. 4 can be enumerated
Inductor 20.Coil buried type inductor 20 can be formed as the small-sized shaped like chips of several mm square, possess the pressure of box shape
Powder magnetic core 21, the coil portion 22c of coated wire 22 is embedded with inside it.End 22a, 22b of coated wire 22 are located at press-powder
Simultaneously expose on the surface of magnetic core 21.The part on the surface of compressed-core 21 is covered by connection end 23a, 23b electrically independent from one another
Lid, connection end 23b electrically connect with the end 22b of coated wire 22.In the coil buried type inductor 20 shown in Fig. 4, quilt
The end 22a of wire 22 is covered by connecting end 23a coverings, is coated to the end 22b of wire 22 by connecting end 23b coverings.
The method that the coil portion 22c of coated wire 22 is buried in compressed-core 21 does not limit.To can be wound with by
The component configuration for covering wire 22 is supplied in mould in mould, then by the mixture (pelletizing) comprising Magnaglo, is carried out
Press molding.Or can also prepare in advance to comprising Magnaglo mixture (pelletizing) carry out preform form it is more
Individual component, by these Component compositions, coated wire 22 is at this moment configured in the space part of delimitation and obtains assembly, to the assembling
Body carries out press molding.The material of coated wire 22 comprising coil portion 22c does not limit.For example, copper alloy can be enumerated.Line
Circle portion 22c can also be flat coil.Connection end 23a, 23b material also do not limit.Based on the viewpoint that productivity is excellent,
There are the metal layer for being preferably provided with being formed by conductive pastes such as silver paste agent and the situation of the coating formed on the metal layer.
The material for forming the coating does not limit.The metallic element contained as the material, illustration have copper, aluminium, zinc, nickel, iron, tin etc..
The electronic/electrical gas equipment of an embodiment of the invention is to be equipped with above-mentioned an embodiment of the invention
Inductor electronic/electrical gas equipment, substrate is connected to by the connection terminal.The electricity of an embodiment of the invention
Son/electrical equipment is equipped with the inductor of an embodiment of the invention, therefore even if apply in oriented equipment high voltage or
The situation of high-frequency signal, the function reduction and the failure caused by heating, the miniaturization of equipment for being not easy to produce inductor also become
Obtain easily.
Embodiments described above is in order that the content that the present invention should be readily appreciated that and record, is not intended to limit this hair
Bright and record content.Therefore, each key element disclosed in above-mentioned embodiment is intended to also comprising the technical scope for belonging to the present invention
All design alterations, equipollent.
Embodiment
Hereinafter, the present invention is further illustrated by embodiment etc., but the scope of the present invention is not implemented by these
Example etc. limits.
(embodiment 1)
(1) making of Fe base amorphous alloys powder
To form FeRemaining partNi5~7 atom %Cr2~4 atom %P10~13 atoms%C5~6 atom %B2~4 atom %The mode of this composition weighs raw material,
The powder of noncrystalline magnetic material (amorphous powder) is made using water atomization.Use day machine dress company system " Microtrac grains
Distribution measurement device MT3300EX " is spent in the way of volume distributed median to determine the grain of the powder of resulting noncrystalline magnetic material
Degree distribution.In the size distribution of volume reference, accumulative particle diameter distribution from small particle side is 50% particle diameter (intermediate value grain
Footpath) D50A is 5 μm.
In addition, the powder as crystalline magnetic material, prepares Fe-Si-Cr systems alloy, specifically, prepares by Si's
Content be the content of 6~7 mass %, Cr be 3~4 mass %, remaining part is Fe and the alloy of inevitable impurity is formed
Median particle diameter D50C is 2 μm of powder.
(2) making of pelletizing
By the powder of the powder of above-mentioned noncrystalline magnetic material and crystalline magnetic material first mixing as shown in table 1
Composition and division in a proportion rate is mixed to obtain Magnaglo.By the mass parts of Magnaglo 97.2, by acrylic resin or phenolic resin structure
Into the mass parts of insulating properties binding material 2~3 and the mass parts of lubricant 0~0.5 that are made up of zinc stearate be mixed into conduct
Slurry is obtained in the water of solvent.
Resulting slurry is granulated with above-mentioned condition using the spray-drying installation 200 shown in Fig. 2, is granulated
Powder.
(3) compression molding
Resulting pelletizing is filled into mould, press molding is carried out with 0.5~1.5GPa of face pressure, to be had
The formed body of external diameter 20mm × internal diameter 12mm × thickness 3mm ring-shaped.
(4) (heat treatment)
It is heat-treated to obtain the toroidal core being made up of compressed-core, in the heat treatment, by resulting shaping
Body is placed in the stove of nitrogen stream atmosphere, and in-furnace temperature is heated to from room temperature (23 DEG C) with 10 DEG C/min of programming rate
As 200~400 DEG C of optimal magnetic core heat treatment temperature, kept for one hour of the temperature, room temperature is then cooled in stove.
The different toroidal core of the first blending ratio shown in table 1 below is made, and is determined by following assay methods
Magnetic core density, insulaion resistance, insulate pressure-resistant, magnetic conductivity and iron loss Pcv.
The measure that (test example 1) insulation is pressure-resistant
Using Kikusui company systems " TOS5051A " pressure-resistant analyzer as measure device, clamped with parallel plate electrode
As the toroidal core of sample, voltage is applied by AC (50Hz).The voltage for obtaining insulation breakdown is pressure-resistant as insulating.
For the embodiment 1-2~embodiment 1-8 determined as described above insulation pressure voltage, amorphous will only be contained by obtaining
The powder of matter magnetic material as the embodiment 1-1 of Magnaglo toroidal core insulation pressure voltage as benchmark (100%)
In the case of the resistance to pressure ratio of insulation (benchmark of noncrystalline 100%) and will only contain the powder of crystalline magnetic material as magnetic
Property powder embodiment 1-8 toroidal core insulation pressure voltage as in the case of benchmark (100%) the resistance to pressure ratio of insulation (knot
The benchmark of crystalloid 100%).
The measure of (test example 2) insulaion resistance
Using former Agilent (existing Keysight) company " 4339B " high resistance analyzer as device is determined, applying
Determined under voltage 20V with two-terminal method.
The measure of (test example 3) magnetic core density p
The size of toroidal core and weight made in embodiment 1 is measured, it is each according to these numerical computations
Density p (the unit of toroidal core：g/cc).
The measure of (test example 4) magnetic conductivity
40 circles, the coated copper of secondary side 10 circles of winding are wound to the toroidal core made in embodiment 1 in primary side respectively
Line and obtain loop coil, resistance analysis (Hewlett-Packard Corporation's system " 4192A ") is used resulting loop coil, with 100kHz's
Condition measure initial permeability μ 0.
(test example 5) iron loss Pcv measure
15 circles, the coated copper of secondary side 10 circles of winding are wound to the toroidal core made in embodiment 1 in primary side respectively
Line and obtain loop coil, use resulting loop coil BH analyzers (the rugged communication equipment company system " SY-8217 " of rock),
Effective peakflux density Bm is set under conditions of 15mT to determine iron loss Pcv (units to determine frequency 2MHz：kW/m3)。
The result determined using the method for above-mentioned test example 1~5 is shown in table 1.
【Table 1】
Fig. 5 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 1.The insulation of such as figure
Shown in pressure-resistant curve map, in embodiment 1, pass through the mixed crystallization matter magnetic material in the powder of noncrystalline magnetic material
Powder, so as to which compared with the situation of each Magnaglo is used alone, insulation voltage endurance is improved.That is, by above-mentioned
Different Magnaglos are mixed, and have obtained the increased effect of insulation pressure voltage for synergistically making compressed-core.In embodiment 1
In, it is that insulation pressure voltage steeply rises near the mass % of 30 mass %~40 in the first blending ratio, in the matter of 40 mass %~70
The resistance to pressure ratio that insulate is changed into more than 120% in the range of amount %, and the resistance to pressure ratio that insulated in the range of the mass % of 50 mass %~70 becomes
For more than 130%, the resistance to pressure ratio of insulation using the powder monomer of embodiment 1-1 noncrystalline magnetic material as benchmark (100%)
Value improve more than 30%.
(embodiment 2)
Compared with the Magnaglo used in embodiment 1, the particle diameter of the powder of noncrystalline magnetic material, crystalline are used
The surface treatment of the powder of magnetic material and the different Magnaglo of particle diameter and obtain similarly to Example 1 by compressed-core
The toroidal core of composition.
Specifically, the powder as noncrystalline magnetic material, has made that component is same as Example 1 and median particle diameter
D50A is 15 μm of Fe base amorphous alloy powder.It should be noted that the noncrystalline magnetic material used in example 2
Powder is by continuously carrying out the atomization of aerosolization, water atomization the powder that makes.
As the powder of crystalline magnetic material, prepare Fe-Si-Cr systems alloy, specifically, prepare be by Si content
The content of 6~7 mass %, Cr is 3~4 mass %, and remaining part is Fe and the intermediate value grain of the alloy composition of inevitable impurity
Footpath D50C is 4 μm of powder.The material that the powder of crystalline magnetic material is handled using phosphate-based surface insulation is implemented.
The plus-pressure of press molding is 0.5~1.5GPa, in heat treatment, with 200~400 DEG C of one hours of heating in blanket of nitrogen.
The different toroidal core of the first blending ratio shown in table 2 below is made, and determines magnetic core density, insulaion resistance, absolutely
Edge is pressure-resistant, magnetic conductivity and iron loss Pcv.
(test example 1~5)
The pressure-resistant measure of insulation, the measure of insulaion resistance, the measure of magnetic core density p, magnetic have been carried out similarly to Example 1
The measure of conductance and iron loss Pcv measure.
Obtain will only contain the insulation pressure voltage of the embodiment 2-1 of the powder of noncrystalline magnetic material toroidal core as
The resistance to pressure ratio of insulation (benchmark of noncrystalline 100%) in the case of benchmark (100%) and by only containing crystalline magnetic material
Powder as the embodiment 2-7 of Magnaglo toroidal core insulation pressure voltage as benchmark (100%) in the case of it is exhausted
The resistance to pressure ratio of edge (benchmark of crystalline 100%).
On magnetic conductivity, initial permeability μ 0 is determined, is also determined straight with 100kHz condition superposition to toroidal core
Flow electric current and caused direct current and apply relative permeability μ 5500 when magnetic field is 5500A/m.Measurement result is shown in table 2.
【Table 2】
Fig. 6 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 2.Such as Fig. 6 insulation
Shown in pressure-resistant curve map, in example 2 also similarly to Example 1, by being mixed in the powder of noncrystalline magnetic material
The powder of crystalline magnetic material is closed, so as to which compared with the situation of each Magnaglo is used alone, insulation voltage endurance is carried
Height, synergy is confirmed.In example 2, it is near 40 mass % in the first blending ratio, insulation pressure voltage compares amorphous
The powder of matter magnetic material is higher, and the resistance to pressure ratio that insulated in the range of the mass % of 70 mass %~90 is changed into more than 180%, will be real
Apply the powder monomer of the noncrystalline magnetic material of a 2-6 as the value of the resistance to pressure ratio of insulation of benchmark (100%) improve 80% with
On.
Fig. 7 is the curve map for the pressure-resistant interdependence to the first blending ratio of insulation for showing embodiment 1 and embodiment 2.
From the result of the figure, by the powder of the mixed crystallization matter magnetic material in the powder of noncrystalline magnetic material, so as to
The situation that each powder is used alone is compared, and can obtain the compressed-core of insulation high pressure.That is, Fig. 7 is shown based on press-powder magnetic
The blending ratio of the powder of the crystalline magnetic material included in core and the powder of noncrystalline magnetic material, it can obtain beyond pre-
The compressed-core of phase, i.e. by the way that the excellent press-powder of voltage endurance that insulate can be obtained more than simple additive synergy
Magnetic core.
Fig. 8 is the powder monomer using noncrystalline magnetic material for showing embodiment 1 and embodiment 2 as each the of benchmark
The curve map of the resistance to pressure ratio of insulation under one blending ratio, Fig. 9 be show embodiment 1 and embodiment 2 by crystalline magnetic material
Curve map of the powder monomer of material as the resistance to pressure ratio of insulation under each first blending ratio of benchmark.
From Fig. 5~Fig. 9 result, by the median particle diameter D for suitably adjusting noncrystalline magnetic material50A, and will
First blending ratio is arranged in the scope more than 40 mass % and below 90 mass, so as to stably reach improve the insulation it is resistance to
The effect of the value of pressure.In addition, by the way that the first blending ratio is set into 50~70 mass %, no matter in noncrystalline magnetic material
It is worth particle diameter D50In the case that A is big or small, the insulation voltage endurance of piezoelectricity magnetic core can be improved.Also, as shown in Figure 9, if
For the first blending ratio as described above (50~70 mass %), then it can obtain only containing crystalline material powder as magnetic
Property powder compressed-core on the basis of the resistance to pressure ratio of insulation in the case of (100%) value for more than 110% or 125% with
On compressed-core.
Figure 10~Figure 12 is insulaion resistance, magnetic core density and the magnetic conductivity for showing embodiment 1 successively to the first mixing ratio
The curve map of the interdependence of rate.
Figure 13~Figure 15 be show successively embodiment 2 insulation is pressure-resistant, insulaion resistance, magnetic core density and magnetic conductivity are to
The curve map of the interdependence of one blending ratio.
As shown in table 1 and table 2 and Fig. 5~Figure 15, pass through the mixed crystallization matter in the powder of noncrystalline magnetic material
Excellent compressed-core obtained from the powder of magnetic material can not only improve insulation voltage endurance, and can be in iron loss PcvIt is several
It is pressure-resistant to increase its insulation in the case of not increased, so as to realize good inductor.
In accordance with the invention it is possible to obtain insulate voltage endurance it is excellent and realize iron loss reduce good inductor pressure
Powder magnetic core, is confirmed by the present embodiment, and its good degree is beyond based on the crystalline magnetic material contained by compressed-core
The powder of material and the degree of the expectation of the blending ratio of the powder of noncrystalline magnetic material.
Industrial applicability
Possess the present invention compressed-core inductor can suitably as hybrid motor vehicle etc. booster circuit
Component parts, generating/transformer the component parts of component parts, transformer and choke coil etc. etc. and use.
Claims (16)
1. a kind of compressed-core, it contains the powder of the powder of crystalline magnetic material and noncrystalline magnetic material, wherein,
The content of the powder of the crystalline magnetic material relative to the powder of the crystalline magnetic material content with it is described
The quality ratio of the summation of the content of the powder of noncrystalline magnetic material is that the first blending ratio is more than 40 mass % and 90 matter
Measure below %.
2. compressed-core according to claim 1, wherein,
First blending ratio is more than 50 mass % and below 70 mass %.
3. compressed-core according to claim 1 or 2, wherein,
The insulation pressure voltage of the compressed-core is in the powder using the noncrystalline magnetic material is only contained as Magnaglo
It is more than 120% when the insulation pressure voltage of compressed-core is as benchmark 100%.
4. compressed-core according to claim 1 or 2, wherein,
The insulation pressure voltage of the compressed-core is in the powder using the crystalline magnetic material is only contained as Magnaglo
It is more than 110% when the insulation pressure voltage of compressed-core is as benchmark 100%.
5. compressed-core according to claim 1 or 2, wherein,
The crystalline magnetic material includes to be closed from by Fe-Si-Cr systems alloy, Fe-Ni systems alloy, Fe-Co systems alloy, Fe-V systems
The one kind selected in the group that gold, Fe-Al systems alloy, Fe-Si systems alloy, Fe-Si-Al systems alloy, carbonyl iron and pure iron are formed
Or two or more material.
6. compressed-core according to claim 1 or 2, wherein,
The crystalline magnetic material is made up of Fe-Si-Cr systems alloy.
7. compressed-core according to claim 1 or 2, wherein,
The noncrystalline magnetic material is included from by Fe-Si-B systems alloy, Fe-P-C systems alloy and Co-Fe-Si-B systems alloy
The one or more kinds of materials selected in the group of composition.
8. compressed-core according to claim 7, wherein,
The noncrystalline magnetic material is made up of Fe-P-C systems alloy.
9. compressed-core according to claim 1 or 2, wherein,
The powder of the crystalline magnetic material is made up of the material for implementing insulation processing.
10. compressed-core according to claim 1 or 2, wherein,
The compressed-core contains the powder phase of the powder for making the crystalline magnetic material and the noncrystalline magnetic material
The bonding component bonded for the other materials contained by the compressed-core.
11. compressed-core according to claim 10, wherein,
The bonding component includes the composition based on resin material.
12. a kind of manufacture method of compressed-core, it is the manufacture method of the compressed-core described in claim 11, wherein,
Possess and handled by the shaping of the press molding including mixture to obtain the forming process of figuration manufacture thing, the mixing
Thing includes the powder of the crystalline magnetic material, the powder of the noncrystalline magnetic material and by the resin material structure
Into Binder Composition.
13. the manufacture method of compressed-core according to claim 12, wherein,
The figuration manufacture thing obtained by the forming process is the compressed-core.
14. the manufacture method of compressed-core according to claim 12, wherein,
Possess by being heat-treated to obtain the heat treatment step of the compressed-core, the heat treatment by the forming process to being obtained
To the figuration manufacture thing heated.
15. a kind of inductor, it possesses compressed-core, coil and each end with the coil described in claim 1 or 2
The connection terminal of portion's connection, wherein,
At least a portion of the compressed-core with positioned at when electric current flows through the coil via the connection terminal by institute
The mode caused by electric current in induced field is stated to configure.
16. a kind of electronic/electrical gas equipment, it is equipped with the inductor described in claim 15, wherein,
The inductor is connected to substrate by the connection terminal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016100194A JP2017208462A (en) | 2016-05-19 | 2016-05-19 | Powder compact core, manufacturing method thereof, inductor with powder compact core, and electronic/electric device with inductor mounted thereon |
| JP2016-100194 | 2016-05-19 |
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|---|---|
| CN107403676A true CN107403676A (en) | 2017-11-28 |
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Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2017208462A (en) |
| KR (1) | KR102104701B1 (en) |
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| CN113272086A (en) * | 2019-01-08 | 2021-08-17 | 松下知识产权经营株式会社 | Method for producing magnetic material, method for producing powder magnetic core, method for producing coil component, powder magnetic core, coil component, and granulated powder |
| CN113474106A (en) * | 2019-02-22 | 2021-10-01 | 阿尔卑斯阿尔派株式会社 | Dust core and method for manufacturing same |
| CN115642031A (en) * | 2022-12-26 | 2023-01-24 | 兰州大学 | Method for optimizing height of soft magnetic Fe composite material high cut-off frequency magnetic ring |
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| JP7138736B2 (en) * | 2021-01-21 | 2022-09-16 | 株式会社タムラ製作所 | CORE, REACTOR, CORE MANUFACTURING METHOD AND REACTOR MANUFACTURING METHOD |
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| US9117582B2 (en) * | 2011-01-28 | 2015-08-25 | Sumida Corporation | Magnetic powder material, low-loss composite magnetic material containing same, and magnetic element using same |
| JP6513458B2 (en) * | 2014-06-06 | 2019-05-15 | アルプスアルパイン株式会社 | Dust core, method of manufacturing the dust core, electronic / electrical component comprising the dust core, and electronic / electrical device on which the electronic / electrical component is mounted |
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- 2017-03-29 KR KR1020170040092A patent/KR102104701B1/en active IP Right Grant
- 2017-04-20 CN CN201710264626.7A patent/CN107403676A/en active Pending
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| JP2004197218A (en) * | 2002-11-22 | 2004-07-15 | Toko Inc | Composite magnetic material, core using the same, and magnetic element |
| JP2007134381A (en) * | 2005-11-08 | 2007-05-31 | Nec Tokin Corp | Composite magnetic material, dust core using the same, and magnetic element |
| CN1787127A (en) * | 2005-12-28 | 2006-06-14 | 安泰科技股份有限公司 | Composite powder for magnetic powder core and preparation process for magnetic powder core |
| JP2011038133A (en) * | 2009-08-07 | 2011-02-24 | Tamura Seisakusho Co Ltd | Powder magnetic core and method for producing the same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113272086A (en) * | 2019-01-08 | 2021-08-17 | 松下知识产权经营株式会社 | Method for producing magnetic material, method for producing powder magnetic core, method for producing coil component, powder magnetic core, coil component, and granulated powder |
| CN113272086B (en) * | 2019-01-08 | 2024-02-20 | 松下知识产权经营株式会社 | Method for producing magnetic material, method for producing powder magnetic core, method for producing coil component, powder magnetic core, coil component, and granulated powder |
| CN113474106A (en) * | 2019-02-22 | 2021-10-01 | 阿尔卑斯阿尔派株式会社 | Dust core and method for manufacturing same |
| CN111834075A (en) * | 2019-04-23 | 2020-10-27 | 奇力新电子股份有限公司 | Alloy powder composition, molded body, method for producing same, and inductor |
| CN111834075B (en) * | 2019-04-23 | 2023-03-28 | 奇力新电子股份有限公司 | Alloy powder composition, molded body, method for producing same, and inductor |
| CN115642031A (en) * | 2022-12-26 | 2023-01-24 | 兰州大学 | Method for optimizing height of soft magnetic Fe composite material high cut-off frequency magnetic ring |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI631223B (en) | 2018-08-01 |
| JP2017208462A (en) | 2017-11-24 |
| KR20170131209A (en) | 2017-11-29 |
| TW201741469A (en) | 2017-12-01 |
| KR102104701B1 (en) | 2020-04-24 |
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