CN107025973B - Sheet magnetic material - Google Patents
Sheet magnetic material Download PDFInfo
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- CN107025973B CN107025973B CN201611158254.1A CN201611158254A CN107025973B CN 107025973 B CN107025973 B CN 107025973B CN 201611158254 A CN201611158254 A CN 201611158254A CN 107025973 B CN107025973 B CN 107025973B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
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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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- 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
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/33—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The present invention provides the flat magnetic substance particle (4) of one kind and is scattered in synthetic resin (6) and manufactured sheet magnetic material.Flat magnetic substance particle (4) is at least any one in Fe-Si-Cr system alloy magnetic substance, Fe-Si-Al-Cr system alloy magnetic substance and Fe-Al-Cr system alloy magnetic substance, on the surface of flat magnetic substance particle (4), the segregant (8) for the Cr that the length of longitudinal direction is 0.4 μm or more is contained in the interior surface of the magnetic substance particle (4) and exists.
Description
Technical field
The present invention relates to the sheet magnetic materials for being for example used as magnetic screen.
Background technique
In order to affect the magnetic field source of magnetized object etc. will not to other objects or circuit etc., magnetic screen is used
Material.As magnetic shielding material, consider that the metal plate of high magnetic susceptibility is more satisfactory from shielding character, but metal plate property, at
This etc., purposes is significantly restricted.
On the other hand, it after dispersing organic binder for said magnetic powder material, is coated on needs to shield in the form of a paint
Position and form sheet magnetic material, or be coated on flexible support body appropriate etc. upper and magnetic screen sheet magnetic material is made, can
To realize various utilizations.
This sheet magnetic material requires sheet resistance to want high.Thus, for example proposing one kind in following patent documents 1
The surface of flat magnetic-particle is set to adhere to the sheet magnetic material of inorganic insulation object.
But conventionally, as adhere to inorganic insulation object on the surface of flat magnetic-particle, magnetic characteristic has can
It can deterioration.In addition, and making currently, the process in the surface of flat magnetic-particle attachment inorganic insulation object is more many and diverse
Use glass (amorphous) as inorganic insulation object, therefore there is also the long-times of flat processing or the abrasion of device etc
The problem of.
Patent document 1: No. 5384711 bulletin of patent
Summary of the invention
The present invention be developed in view of such opportunity situation, it is intended that provide it is a kind of manufacture be easy, magnetic characteristic
Sheet magnetic material excellent and that sheet surface resistance is high.
A technical solution to solve project
In order to achieve the above objectives, the present invention provides a kind of sheet magnetic material, is scattered in conjunction for flat magnetic substance particle
It is made in resin, which is characterized in that
The flat magnetic substance particle is Fe-Si-Cr system alloy magnetic substance, Fe-Si-Al-Cr system alloy magnetism
At least any one in body and Fe-Al-Cr system alloy magnetic substance,
On the surface of the flat magnetic substance particle, the segregant packet for the Cr that the length of longitudinal direction is 0.4 μm or more
Interior surface contained in the magnetic substance particle and exist,
In the surface or section of the magnetic substance sheet material, in 10 μm of arbitrary 10 μ m of visual field, it can be observed 5
The segregant of the Cr.
In sheet magnetic material of the invention, control are as follows: make the Cr contained originally in magnetic substance particle in magnetic substance particle
Surface is more than specific length to be segregated, and segregant 5 for making the Cr or more.It therefore, there is no need in addition preparation and magnetic substance
The different inorganic insulation object of particle simultaneously is allowed to adhere to, and it is high to be capable of providing easy manufacture, having excellent magnetic properties and sheet surface resistance
Sheet magnetic material.
Preferably, the length of the short side direction of the segregant of the Cr is calculated in length and breadth divided by the length of longitudinal direction
Than being 0.3 or less.Due to being aspect ratio to provide segregant below, so as to provide having excellent magnetic properties and sheet material table
The high sheet magnetic material of surface resistance.
Preferably, it is counted with the length of the short side direction of the flat magnetic substance particle divided by the length of longitudinal direction
The aspect ratio of calculation is 0.3 or less.Due to being aspect ratio to provide magnetic substance particle below, so that even if the thickness of sheet material is thinned
Degree is also capable of providing having excellent magnetic properties and the high sheet magnetic material of sheet surface resistance.
Detailed description of the invention
Fig. 1 is the enlarged cross-sectional view of the sheet magnetic material of an embodiment of the present invention；
Fig. 2 is the major part enlarged cross-sectional view (skeleton diagram of EPMA picture) in the portion II shown in FIG. 1.
Symbol description
2: sheet magnetic material
4: magnetic substance particle
6: synthetic resin
The segregant of 8:Cr
Specific embodiment
Hereinafter, the present invention will be described for embodiment based on the figure.
As shown in Figures 1 and 2, the sheet magnetic material 2 of an embodiment of the present invention is that flat magnetic substance particle 4 is scattered in
Manufactured sheet magnetic material in synthetic resin 8.Flat magnetic substance particle 4 is in sheet material 2, in the face direction of sheet material 2 with particle 4
The substantially uniform mode of longitudinal direction be orientated.
It as synthetic resin 8, is not particularly limited, urethane resin, polyester resin, polyvinyl resin, cellulose can be illustrated
The thermoplastic resins such as resin, epoxy resin, phenolic resin, amide resin, heat-curing resin, radiation-curable resin etc..
Flat magnetic substance particle 4 is Fe-Si-Cr system alloy magnetic substance, Fe-Si-Al-Cr system alloy magnetic substance
And at least any one in Fe-Al-Cr system alloy magnetic substance.It is preferred that the filling rate of the magnetic substance particle 4 in sheet magnetic material 2 is
60~95wt%.
It as Fe-Si-Cr system alloy magnetic substance, is not particularly limited, but by Fe-Si-Cr system alloy magnetic substance
Composition be expressed as Fea1Sib1Crc1Xd1In the case where, following formula is set up.A1=53~85, b1=15~35, c1=0.1
~6, d1=0.1~6.
Wherein, more than one the other elements other than X Fe, Si, Cr, a1, b1, c1, d1 for their element original
Sub- percentage, a1+b1+c1+d1=100.It as other elements X, is not particularly limited, such as can according to need from transition gold
Belong to and being selected in the various metallic elements or semimetallic elements etc. such as element.In addition, N, O, S etc. can also be contained in other elements X
Inevitable impurity, as long as adverse effect will not be brought to magnetic characteristic.
It as Fe-Si-Al-Cr system alloy magnetic substance, is not particularly limited, by Fe-Si-Al-Cr system alloy
The composition of magnetic substance is expressed as Fea2Sib2Ale2Crc2Xd2In the case where, following formula is set up.A2=53~85, b2=15~
35, e2=15~35, c2=0.1~6, d2=0.1~6.
Wherein, more than one the other elements other than X Fe, Si, Cr, Al, a2, b2, e2, c2, d2 are their member
The atomic percent of element, a2+b2+e2+c2+d2=100.It as other elements X, is not particularly limited, such as needed may be used
To be selected from the various metallic elements such as transition metal element or semimetallic elements etc..It, can also be in addition, in other elements X
Containing the inevitable impurity such as N, O, S, as long as adverse effect will not be brought to magnetic characteristic.
It as Fe-Al-Cr system alloy magnetic substance, is not particularly limited, by Fe-Al-Cr system alloy magnetic substance
Composition is expressed as Fea3Ale3Crc3Xd3In the case where, following formula is set up.A3=53~85, e3=15~35, c3=0.1~
6, d3=0.1~6.
Wherein, more than one the other elements other than X Fe, Si, Cr, a3, e3, c3, d3 are the original of their element
Sub- percentage, a3+e3+c3+d3=100.It as other elements X, is particularly limited to, such as needed can be from transition gold
Belong to and being selected in the various metallic elements or semimetallic elements etc. such as element.In addition, N, O, S etc. can also be contained in other elements X
Inevitable impurity, as long as adverse effect will not be brought to magnetic characteristic.
On the surface of flat magnetic substance particle 4, the segregant 8 for the Cr that the length of longitudinal direction is 0.4 μm or more includes
In magnetic substance particle 4 interior surface and exist.The aspect ratio of magnetic-particle 4 is the length with the short side direction of magnetic substance particle 4
L1 is spent divided by the length L0 value calculated of longitudinal direction, and in the present embodiment, aspect ratio is 0.3 or less.Magnetic substance
The lower limit of the aspect ratio of grain 4 is not particularly limited, and preferably 0.002 or more.In addition, the length of the longitudinal direction of magnetic substance particle 4
Spending L0 is preferably 5~60 μm.
The aspect ratio and magnetic substance particle 4 of the segregant 8 of Cr similarly define, and are defined as the length with its short side direction
Divided by the length of longitudinal direction value calculated, preferably its aspect ratio is 0.3 or less.The lower limit of the aspect ratio of the segregant 8 of Cr
It is not particularly limited, preferably 0.002 or more.In addition, the length of the longitudinal direction of the segregant 8 of Cr is preferably 0.4~20 μm,
It is the 1/200~1/2 of the length L0 of the longitudinal direction of magnetic substance particle 4.
It is precipitated and retrodeviates on the surface of particle 4 it is generally believed that the segregant 8 of Cr is Cr contained in magnetic substance particle 4
Substance, such as obtained and having carried out flat treated heat treatment condition to magnetic substance particle 4 by the selection of specific condition.
In the present embodiment, it preferably in the surface or section of magnetic substance sheet material 2, is observed in 10 μm of arbitrary 10 μ m of visual field
To the segregant of 5 or more Cr.The sheet magnetic material of segregant is observed in such range, and not only manufacture is easy, and magnetic is special
Property it is excellent, and sheet surface resistance improve.Further, it was observed that the upper limit of quantity of segregant of Cr be not particularly limited,
Preferably 100 or less.
In the sheet magnetic material 2 of present embodiment, the table of the Cr that contained magnetic substance particle 4 originally in magnetic substance particle 4
Face is more than specific length to be precipitated.Therefore, there is no need in addition to prepare magnetic substance particle adheres to inorganic insulation object, is capable of providing not
But manufacture is easy, and having excellent magnetic properties and the high sheet magnetic material 2 of sheet surface resistance.Sheet material table can be readily available
Surface resistance is 1.0E+06 (1 × 106) Ω or more sheet magnetic material 2.
In the present embodiment, the aspect ratio of magnetic substance particle 4 is 0.3 or less.Due to being that aspect ratio is below to provide
Magnetic substance particle 4, therefore even if be thinned sheet magnetic material 2 thickness, also be easy sheet material, meanwhile, it is capable to provide having excellent magnetic properties,
And the high sheet magnetic material 2 of sheet surface resistance.The thickness of sheet magnetic material 2 is not particularly limited, and preferably 50~100 μm.
The sheet magnetic material 2 of present embodiment, as other purposes, can illustrate for example in magnetic screen with using on the way
Noise filter, wave absorber etc..
The sheet magnetic material 2 of present embodiment is for example if following operation is to manufacture.Firstly, by the alloy with above-mentioned composition
Particle flattening obtains flat magnetic substance particle 4.About the manufacture of alloying pellet, method is not particularly limited, and is passed through
Carry out the crushing of the chilling or alloy pig of molten alloy.The method that molten alloy carries out chilling is not particularly limited, by
It can be obtained the alloying pellet of required partial size in no pulverizing process, productivity is high, therefore it is preferable to use water atomizations.
Water atomization is after making its solidification, powdered to molten alloy injection high pressure water, to carry out cooling method in water,
Its detailed content is for example on the books at application number 1-12267.
In addition to water atomization, also can be used makes molten metal and the collision of cooling matrix, obtain thin ribbon shaped or flake,
Or the method for granular alloy.As this method, single-roller method or double roller therapy or atomization are enumerated.In these methods,
As long as needed crushing obtained quick cooling alloy, the alloying pellet of required partial size can be formed.
In the case where manufacturing alloying pellet by the crushing of alloy pig, preferably carried out after implementing solution treatment to ingot
It crushes.
The average grain diameter of alloying pellet is suitably determined according to the partial size or aspect ratio of the flat soft magnetic particles as target
It is fixed, in general, being set as 5~30 μm in terms of weight average particle diameter D50, it is preferably set to 7~20 μm.
Additionally, it is preferred that implementing the heat treatment for rectifying crystal structure to alloying pellet.To the alloying pellet before flattening
It is small to be preferably set at 100~600 DEG C of holdings 10 minutes~10 for holding temperature and temperature hold-time when the heat treatment of implementation
When.Preferred heat treatment condition is kept for 30 minutes~2 hours at 300~500 DEG C.
The method of alloying pellet flattening is not particularly limited, as long as required flattening can be carried out, using why
The method of sample is ok.
But in the present embodiment, the flattening of alloying pellet mainly is carried out by riving, it is preferred, therefore, that using
The method that can be efficiently cleaved.
As this method, medium stirring mill machine, rotary mill etc. are enumerated, wherein particularly preferably stir using medium
Grinding machine.
Medium stirring mill machine be also known as pin-type mill, ball mill or have blender ball mill blender,
Such as it is on the books in tekiaki 61-259739 bulletin, application number 1-12267 etc..
It is preferred that implementing heat treatment to obtained flat soft magnetic particles are operated in this way.Holding temperature when the heat treatment
390~550 DEG C are preferably set to be kept for 20 minutes~4 hours.In addition, the holding temperature being more preferably heat-treated be 390~
500℃.Retention time is not particularly limited, and preferably 30 minutes~3 hours.
In the present embodiment, while setting above-mentioned temperature range, heating rate and cooling rate are extremely important,
Heating rate since 100 DEG C is preferably 5~50 DEG C/minute, and further preferably 10~50 DEG C/minute.In addition, dropping to 100 DEG C
Cooling rate be preferably 2~20 DEG C/minute, further preferably 5~20 DEG C/minute.
In turn, in the present embodiment, preferably make vacuum degree 0.1Pa for the time being hereinafter, later, importing inert gas will
Oxygen concentration is set as 1 × 10- 8~0.01Pa is heat-treated (heating, the total travel for keeping and cooling down).As inert gas, example
Show nitrogen, argon, helium, carbon dioxide etc..
Think, heat treatment condition in this way with chilling is quenched close heat treatment, in the heat treatment retention time
Even if the segregation status of the Cr of middle formation is also held at and is heat-treated at room temperature state close when keeping, can be flat
Magnetic substance particle 4 surface be precipitated stated number more than Cr.In addition, the heat treatment can also carry out in magnetic field.
Sheet magnetic material 2 passes through the magnetic substance particle 4 for making to be constituted by operating obtained soft magnetic powder in this way, is dispersed in packet
It in binder containing synthetic resin and carries out sheet material and obtains as the method for carrying out sheet material, be not particularly limited,
Such as rubbing method can be illustrated.
In addition, in the sheet magnetic material lotion before sheet material, except containing the magnetic substance being made of soft magnetic powder
Other than grain 4 and synthetic resin 6, curing agent, dispersing agent, stabilizer, coupling agent etc. can also be contained.This lotion is usually shaping
It for required shape, or is coated after coating constituent is made using necessary solvent, then, is added as needed
Heat cure, by its sheet material.Solidification is heated 6~100 hours or so generally in heating furnace at 50~80 DEG C.
In addition, various modifications may be made within the scope of the invention the present invention is not limited to above-mentioned embodiment.
[embodiment]
Hereinafter, illustrating the present invention in further detail based on embodiment, but the present invention is not limited to these embodiments.
Embodiment 1
In this embodiment, alloying pellet is made by water atomization, then, by medium stirring mill machine by alloying pellet
Flattening, then implement to be heat-treated, obtain the soft magnetic powder (magnetic substance particle) being made of flat soft magnetic particles.
The group of flat soft magnetic particles becomes Fe-Si-Cr system alloy magnetic substance, is being expressed as Fea1Sib1Crc1Xd1
In the case where, a1=70, b1=28, c1=2, d1=0.
In heat treatment, vacuum degree is formed as into 0.1Pa for the time being hereinafter, nitrogen of the importing as inert gas, dense by oxygen
Degree is set as 1 × 10- 8~0.01Pa is heat-treated (heating, the total travel for keeping and cooling down).
Heat treatment condition is for example following.Heating rate since 100 DEG C is 20 DEG C/minute, and the cooling rate for dropping to 100 DEG C is
10 DEG C/minute, keeping temperature is 390 DEG C, and the retention time is 60 points.
By the flat soft magnetic particles after heat treatment and using polyurethane as the binder solution of principal component
Mixing makes magnetic substance lotion.The filling rate of magnetic substance particle in lotion is set as 80wt%.
Magnetic substance lotion is coated on 75 μm of thickness of strip pet substrate, coating thickness is 25 μ m-thicks, is rolled into roll
Afterwards, heating 60 minutes at 60 DEG C makes its solidification.The roll magnetic substance is cut into sheet, obtains the sample of sheet magnetic material.Make
It is for the magnetic characteristic of the sample of sheet magnetic material, the coercivity (Hc) when being converted into raw material 100% is shown in table 1.About by flat powder
100mg is put into plastic container, is fixed flat powder with lid, is analyzed with the shape using northeast special steel Co. Ltd. system Hc
Instrument K-HC1000 carries out coercitive measurement.
In addition, to keep its two butt with Agilent Technology HIGH RESISTANCE METER 4339B
With the surface of 100 μm of sheet materials below of thickness and the mode of rear-face contact, the sheet resistance of sheet magnetic material is measured.It shows the result in
Table 1.
In addition, the method shown in following acquires the Q value of the sample of sheet magnetic material.That is, using Agilent
Technology Co. Ltd. system Agilent E4991A RF impedance/material analyzer, and carried out using equipment HP16454A.
Show the result in table 1.In addition, in table 1, the Q value of embodiment 1 is scaled 100 to indicate, other embodiments and comparative example with
The Q value of the embodiment 1 is indicated compared to resulting ratio.
In addition, the sample of section sheet magnetic material is cut off in the section vertical with piece face, is observed by EPMA
Its section, as a result as shown in Fig. 2, can confirm, flat magnetic substance particle 4 is dispersed in synthetic resin 6.In addition, can confirm
The segregant 8 for the Cr that the length of longitudinal direction is 0.4 μm or more is contained in the interior surface of magnetic substance particle 4 and exists.
In addition, confirmation observes the segregant 8 of 5 or more 6 Cr, in the visual field in 10 μm of 10 μ m of visual field
The average out to 0.3 of the aspect ratio of the segregant 8 of all Cr inside observed is hereinafter, and be 0.2.In addition, confirmation is in the visual field
The average out to 0.3 of the aspect ratio for the flat magnetic substance particle 4 observed is hereinafter, and be 0.01.
[table 1]
Embodiment 2
Holding temperature when being heat-treated is set as 420 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Embodiment 3
Holding temperature when being heat-treated is set as 450 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Embodiment 4
Holding temperature when being heat-treated is set as 500 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Embodiment 5
Holding temperature when being heat-treated is set as 550 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Comparative example 1
Holding temperature when being heat-treated is set as 370 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Comparative example 2
Holding temperature when being heat-treated is set as 450 DEG C, will heat up speed and cooling rate is set as shown in table 1
Value, operates in the same way with embodiment 1 in addition to this, makes sheet magnetic material, and similarly measured.Show the result in table 1.
Comparative example 3
Holding temperature when being heat-treated is set as 600 DEG C, is operated in the same way in addition to this with embodiment 1, production is magnetic
Sheet material, and similarly measured.Show the result in table 1.
Evaluation
According to Examples 1 to 5, can be realized in 10 μm of 10 μ m of visual field, there are the length of 5 or more longitudinal directions
For the construction of the segregant of 0.4 μm or more of Cr, as a result, can confirm, compared with comparative example 1~3, magnetic characteristic is same
More than, also, sheet surface resistance improves.Furthermore according to Examples 1 to 5, can confirm, compared with comparative example 1~3, Q value
Also it improves.
As shown in table 1, from the viewpoint of improving sheet surface resistance, the quantity of the segregant of Cr preferably 6~12, into one
Step preferably 8~12.In addition, from the viewpoint of improving coercivity (or Q value) and sheet resistance both sides, the quantity of the segregant of Cr
It is preferred that 6~12, further preferred 8~12.
Embodiment 6
As flat soft magnetic particles, using Fe-Si-Al-Cr system alloy magnetic substance, in addition to this, with implementation
Example 1~6 and comparative example 1~3 operate in the same way, and make sheet magnetic material, are similarly measured.It obtains and Examples 1 to 6 and ratio
Compared with the same result of example 1~3.
In addition, the composition of Fe-Si-Al-Cr system alloy magnetic substance is expressed as Fea2Sib2Ale2Crc2Xd2The case where
Under, a2=64, b2=16, e2=16, c2=2, d2=2.Wherein, X Co.
Embodiment 7
As flat soft magnetic particles, using Fe-Al-Cr system alloy magnetic substance, in addition to this with embodiment 1
~6 and comparative example 1~3 operate in the same way, make sheet magnetic material, and similarly measured.It obtains and Examples 1 to 6 and ratio
Compared with the same result of example 1~3.
In addition, the composition of Fe-Al-Cr system alloy magnetic substance is expressed as Fea3Ale3Crc3Xd3In the case where, a3=
64, e3=32, c3=2, d3=2.Wherein, X Ti.
Claims (3)
1. a kind of sheet magnetic material, which is characterized in that
It is sheet magnetic material made of flat magnetic substance particle is scattered in synthetic resin,
The flat magnetic substance particle be Fe-Si-Cr system alloy magnetic substance, Fe-Si-Al-Cr system alloy magnetic substance and
At least any one in Fe-Al-Cr system alloy magnetic substance,
On the surface of the flat magnetic substance particle, the segregant of Cr is contained in the interior surface of the magnetic substance particle and deposits
,
The length of the longitudinal direction of the segregant of the Cr is 0.4 μm or more, and is the length of the longitudinal direction of magnetic substance particle
The 1/200~1/2 of degree,
In the surface or section of the magnetic substance sheet material, in 10 μm of arbitrary 10 μ m of visual field, it can be observed 5 or more
The Cr segregant.
2. sheet magnetic material according to claim 1, which is characterized in that
The length of the short side direction of the segregant of the Cr is 0.3 or less divided by the length aspect ratio calculated of longitudinal direction.
3. sheet magnetic material according to claim 1 or 2, which is characterized in that
The length of the short side direction of the flat magnetic substance particle is 0.3 divided by the length aspect ratio calculated of longitudinal direction
Below.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-244175 | 2015-12-15 | ||
| JP2015244175A JP6520688B2 (en) | 2015-12-15 | 2015-12-15 | Magnetic sheet |
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| Publication Number | Publication Date |
|---|---|
| CN107025973A CN107025973A (en) | 2017-08-08 |
| CN107025973B true CN107025973B (en) | 2019-06-07 |
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| CN201611158254.1A Active CN107025973B (en) | 2015-12-15 | 2016-12-15 | Sheet magnetic material |
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| US20200107479A1 (en) * | 2018-09-27 | 2020-04-02 | Tdk Corporation | Metal magnetic film and magnetic sheet |
| JP7028152B2 (en) * | 2018-12-14 | 2022-03-02 | トヨタ自動車株式会社 | Resolver |
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| CN1731542A (en) * | 2004-08-05 | 2006-02-08 | 株式会社电装 | Method for manufacturing soft magnetic material |
| CN102131867A (en) * | 2008-08-27 | 2011-07-20 | 索尼化学&信息部件株式会社 | Magnetic sheet composition, magnetic sheet, and process for producing magnetic sheet |
| CN103258611A (en) * | 2012-02-21 | 2013-08-21 | Nec东金株式会社 | Soft magnetic powder, method of manufacturing same, noise suppression sheet using same, and method of manufacturing same |
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| JP2009164402A (en) * | 2008-01-08 | 2009-07-23 | Fuji Electric Device Technology Co Ltd | Manufacturing method of dust core |
| CN101624689A (en) * | 2009-08-11 | 2010-01-13 | 安泰科技股份有限公司 | Flat amorphous alloy powder and electromagnetic wave absorber containing same |
| JP2013149661A (en) * | 2012-01-17 | 2013-08-01 | Hitachi Industrial Equipment Systems Co Ltd | Iron powder for pressed powder magnetic body, pressed powder magnetic body, method of manufacturing iron powder for pressed powder magnetic body, and method of manufacturing pressed powder magnetic body |
| KR102195949B1 (en) * | 2014-03-10 | 2020-12-28 | 히타치 긴조쿠 가부시키가이샤 | Magnetic core, coil component and magnetic core manufacturing method |
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| CN102131867A (en) * | 2008-08-27 | 2011-07-20 | 索尼化学&信息部件株式会社 | Magnetic sheet composition, magnetic sheet, and process for producing magnetic sheet |
| CN103258611A (en) * | 2012-02-21 | 2013-08-21 | Nec东金株式会社 | Soft magnetic powder, method of manufacturing same, noise suppression sheet using same, and method of manufacturing same |
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