CN102938281A - Soft magnetic ferrite material with high magnetic permeability and low magnetic core loss - Google Patents
Soft magnetic ferrite material with high magnetic permeability and low magnetic core loss Download PDFInfo
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- CN102938281A CN102938281A CN201210436157XA CN201210436157A CN102938281A CN 102938281 A CN102938281 A CN 102938281A CN 201210436157X A CN201210436157X A CN 201210436157XA CN 201210436157 A CN201210436157 A CN 201210436157A CN 102938281 A CN102938281 A CN 102938281A
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Abstract
The invention relates to a soft magnetic ferrite material which comprises a major component and additives. The major component comprises, by mole, 50.5-57 mol% of Fe2O3, 31-39 mol% of MnO and 7-15 mol% of ZnO. The additives comprise, according to weight percentage accounting for the soft magnetic ferrite material, 20-80ppm of SiO2, 100-500ppm of CaO, 250-600ppm of Nb2O5, 400-1000ppm of Co2O3 and 150-400ppm of V2O5. The soft magnetic ferrite material is made of conventional raw materials, is low in cost and has high magnetic permeability and low magnetic core loss.
Description
Technical field
The present invention relates to technical field of magnetic materials, particularly, the present invention relates to a kind of soft magnetic ferrite.
Background technology
Soft magnetic ferrite is with Fe
2O
3For principal component, have the ferrite of soft magnetic characteristic, it is characterized in that easily magnetization and demagnetization.Soft magnetic ferrite is the basic material that a kind of purposes is wide, output is large, cost is low, it is one of important pillar product of electronics, mechanotronics, it apply the development that directly has influence on the industry of electronic information, household electrical appliances, computer and communication, environmental protection and power-saving technology, also be one of sign of a national economy development degree of measurement.Soft magnetic ferrite practical, so far half a century, because it has high magnetic permeability, high resistivity, low-loss, good high frequency characteristics and the resistance to wear of pottery, thereby be used widely in the fields such as the new forms of energy such as green illumination, solar energy and wind energy, automotive electronics, Internet of Things such as the electron beam deflection coils of television set, kickback transformer, broadcast receiver choke, middle all transformers, inductor, Switching Power Supply, communication apparatus, filter, computer, electric ballast, LED; Along with popularizing that electronic technology increasingly extensive application, particularly digital circuit and Switching Power Supply are used, the electromagnetic interference (EMI) problem becomes more and more important, and countries in the world are more and more higher to the standard of electronic instrument and the anti-electromagnetic interference performance proposition of measuring equipment.Therefore, EMI magnetic element development take soft magnetic ferrite as the basis rapidly, product category is various, and such as electromagnetic interference eliminator, electric wave absorbing materials, frequency multiplier, modulator etc., oneself becomes modern military electronic equipment, industry and the indispensable part of civil electronic instrument.
But the shortcomings that existing soft magnetic ferrite exists: low frequency, low saturation flux density and high magnetic loss, limited electronics miniaturization, light-duty development.
CN 102194561A discloses a kind of soft magnetic ferrite and preparation method thereof, and component and mole proportioning are: the Fe of 52 ~ 55mo1
2O
3, 39 ~ 42mo1 Mn
3O
4, 5 ~ 8mol the additive 1, the additive 2 of 0.1 ~ 0.2mol, the ZrO of 0.006 ~ 0.06mo1 of ZnO, 0.1 ~ 0.6mo1
2Described additive 1 is SnO
2, CaCO
3, V
2O
5In one or more.Described additive 2 is Nb
2O
5, K
2CO
3, CaCO
3, Ta
2O
5, SnO
2, V
2O
5In two or more.
CN 1627454A discloses a kind of soft-magnetic manganese-zinc ferrite in low wastage, and principal component is the Fe that is scaled 52.7 ~ 53.6mo1%
2O
3, the ZnO of 8.5 ~ 11.8mol%, all the other are MnO; In principal component, add the SnO of 1000 ~ 8000ppm
2, 500 ~ 2000ppm CaCO
3, 300～1500ppm V
2O
5In at least a.After principal component and the additive mixing pre-burning, carry out secondary doping when fine powder is broken, the additive that mixes is Nb again
2O
5, K
2O, CaCO
3, Ta
2O
5, SnO
2, V
2O
5In at least two kinds, total addition is between 800～1200ppm.
But existing soft magnetic ferrite permeability and core loss can not satisfy actual needs, in the urgent need to further improvement.
Summary of the invention
For the deficiencies in the prior art, one of purpose of the present invention is to provide a kind of soft magnetic ferrite.Described soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the iron oxide (Fe of 50.5～57mol%
2O
3), the manganese oxide (MnO) of 31～39mol% and the zinc oxide (ZnO) of 7～15mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the silica (SiO of 20～80ppm
2), the calcium oxide (CaO) of 100～500ppm, the niobium oxide (Nb of 250～600ppm
2O
5), the cobalt oxide (Co of 400～1000ppm
2O
3) and the vanadium oxide (V of 150～400ppm
2O
5).
Described Fe
2O
3Content can be 50.6mol%, 50.7mol%, 50.8mol%, 51mol%, 51.9mol%, 52.1mol%, 52.9mol%, 53.1mol%, 53.7mol%, 53.9mol%, 54.9mol%, 55.1mol%, 56mol%, 56.5mol%, 56.8mol%, 56.9mol% etc.
The content of described MnO can be 31.1mol%, 31.2mol%, 32mol%, 32.5mol%, 32.8mol%, 32.9mol%, 33.1mol%, 33.5mol%, 34mol%, 34.9mol%, 35.1mol%, 35.4mol%, 35.6mol%, 35.9mol%, 36.1mol%, 37mol%, 38mol%, 38.5mol%, 38.8mol%, 38.9mol% etc.
The content of described ZnO can be 7.1mol%, 7.2mol%, 7.5mol%, 8mol%, 8.5mol%, 8.9mol%, 9.1mol%, 9.5mol%, 10mol%, 10.6mol%, 10.8mol%, 11mol%, 11.2mol%, 11.4mol%, 12mol%, 12.9mol%, 13.1mol%, 14mol%, 14.5mol%, 14.8mol%, 14.9mol% etc.
Described SiO
2Content can be 20.1ppm, 20.2ppm, 20.5ppm, 21ppm, 22ppm, 24ppm, 26ppm, 28ppm, 29ppm, 31ppm, 35ppm, 40ppm, 49ppm, 51ppm, 60ppm, 64ppm, 66ppm, 70ppm, 75ppm, 78ppm, 79ppm etc.
The content of described CaO can be 100.1ppm, 100.2ppm, 100.5ppm, 101ppm, 102ppm, 105ppm, 110ppm, 119ppm, 121ppm, 130ppm, 140ppm, 145ppm, 149ppm, 151ppm, 160ppm, 200ppm, 250ppm, 300ppm, 350ppm, 400ppm, 440ppm, 460ppm, 470ppm, 490ppm, 495ppm, 498ppm, 499ppm etc.
Described Nb
2O
5Content can be 251ppm, 252ppm, 255ppm, 260ppm, 270ppm, 275ppm, 279ppm, 281ppm, 285ppm, 290ppm, 299ppm, 301ppm, 310ppm, 350ppm, 400ppm, 450ppm, 499ppm, 501ppm, 510ppm, 540ppm, 560ppm, 590ppm, 595ppm, 598ppm, 599ppm etc.
Described Co
2O
3Content can be 401ppm, 402ppm, 410ppm, 440ppm, 460ppm, 480ppm, 490ppm, 499ppm, 501ppm, 510ppm, 550ppm, 600ppm, 700ppm, 800ppm, 890ppm, 910ppm, 940ppm, 960ppm, 980ppm, 990ppm, 998ppm, 999ppm etc.
Described V
2O
5Content can be 151ppm, 152ppm, 160ppm, 179ppm, 181ppm, 190ppm, 199ppm, 201ppm, 210ppm, 250ppm, 290ppm, 310ppm, 340ppm, 349ppm, 351ppm, 360ppm, 390ppm, 395ppm, 398ppm, 399ppm etc.
Preferably, described soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the Fe of 52～55mol%
2O
3, the MnO of 33～36mol% and the ZnO of 9～13mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the SiO of 25～65ppm
2, the CaO of 120～450ppm, the Nb of 280～550ppm
2O
5, 450～950ppm Co
2O
3V with 180～350ppm
2O
5
Preferably, described soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the Fe of 53～53.8mol%
2O
3, the MnO of 35～35.5mol% and the ZnO of 10.7～11.3mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the SiO of 30～50ppm
2, the CaO of 150～400ppm, the Nb of 300～500ppm
2O
5, 500～900ppm Co
2O
3V with 200～300ppm
2O
5
Particularly preferably, described soft magnetic ferrite is comprised of principal component and additive, and wherein, principal component is according to the Fe of molar percentage by 53～53.8mol%
2O
3, the MnO of 35～35.5mol% and 10.7～11.3mol% ZnO form; Additive is according to the SiO of the weight percent meter that accounts for described soft magnetic ferrite by 30～50ppm
2, the CaO of 150～400ppm, the Nb of 300～500ppm
2O
5, 500～900ppm Co
2O
3V with 200～300ppm
2O
5Form.
Soft magnetic ferrite of the present invention can also comprise other component, such as metal oxide, metal carbonate, rare-earth oxide, rare earth metal carbonate etc., and one of ordinary skill in the art can select as required.
Soft magnetic ferrite of the present invention can adopt the conventional method preparation, for example: first the prescription composition material of buying from qualified minute supplier is detected, after qualified, after pressing formula rate composition material being mixed, after vibration, rolling sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, mist projection granulating, finish the powder preparation of soft magnetic ferrite, by pressure testing, the examination of powder being burnt and detecting, finished the judgement whether qualified to material property.
One of purpose of the present invention also is to provide a kind of purposes of described soft magnetic ferrite.Described soft magnetic ferrite can be used for preparing FERRITE CORE.
The method of using soft magnetic ferrite of the present invention to make FERRITE CORE is prior art, and for example adoptable technical process is: moulding, sintering, grinding, cleaning, minute survey, packing.One of ordinary skill in the art also can adopt other method to use soft magnetic ferrite of the present invention to make FERRITE CORE.
In the present invention, described principal component (is Fe
2O
3, MnO and ZnO) in the molar percentage of every kind of component account for the percentage of principal component integral molar quantity, for example Fe for every kind of component in them
2O
3Amount be 52mol%, refer to Fe
2O
3The mole percentage that accounts for each component integral molar quantity of principal component be 52%.
Additive of the present invention (is that unit is the SiO of ppm
2, CaO, Nb
2O
5, Co
2O
3, V
2O
5) in the concentration of every kind of component account for the mass concentration of the gross mass of soft magnetic ferrite, for example SiO for each component
2Addition be 20ppm, refer to SiO
2The quality percentage that accounts for the soft magnetic ferrite gross mass be
Soft magnetic ferrite of the present invention adopts conventional raw materials, and cost is lower, and has higher permeability and lower core loss.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand that described embodiment helps to understand the present invention, should not be considered as concrete restriction of the present invention.
Embodiment 1
Present embodiment by vibration, roll and generate soft magnetic ferrite composed of the following components behind sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, the mist projection granulating:
Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Embodiment 2
Present embodiment by vibration, roll and generate soft magnetic ferrite composed of the following components behind sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, the mist projection granulating:
Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Embodiment 3
Present embodiment by vibration, roll and generate soft magnetic ferrite composed of the following components behind sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, the mist projection granulating:
Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Embodiment 4
Present embodiment by vibration, roll and generate soft magnetic ferrite composed of the following components behind sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, the mist projection granulating:
Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Embodiment 5
Present embodiment by vibration, roll and generate soft magnetic ferrite composed of the following components behind sheet, pre-burning, coarse crushing, separating twice, slurrying, formulation analysis and adjustment, the mist projection granulating:
Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Comparative Examples 1
Take the disclosed soft magnetic ferrite of CN 102194561A as Comparative Examples 1.It is pressed into
Standard rings sintering in the power atmosphere furnace of (at present general material properties test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Comparative Examples 2-3
Sino-German Electronics Co., Ltd. produces take Tianzhang City respectively ZP40 and ZP3K are Comparative Examples 2 and Comparative Examples 3.Above-mentioned particle powder is pressed into
Standard rings sintering in the power atmosphere furnace of (at present more general proprietary material performance test annulus in the industry).The sample ring is tested, and test result sees Table 1.
Table 1
As shown in Table 1, the permeability of soft magnetic ferrite of the present invention is more than 2700, and core loss in the time of 25 ℃ at 550kW/m
3Below, 100 ℃ at 470kW/m
3Below, compare with Comparative Examples, have higher permeability and lower core loss.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, does not mean that namely the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.The person of ordinary skill in the field should understand, any improvement in the present invention to the interpolation of the equivalence replacement of each raw material of product of the present invention and auxiliary element, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (5)
1. a soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the Fe of 50.5～57mol%
2O
3, the MnO of 31～39mol% and the ZnO of 7～15mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the SiO of 20～80ppm
2, the CaO of 100～500ppm, the Nb of 250～600ppm
2O
5, 400～1000ppm Co
2O
3V with 150～400ppm
2O
5
2. soft magnetic ferrite as claimed in claim 1 is characterized in that, described soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the Fe of 52～55mol%
2O
3, the MnO of 33～36mol% and the ZnO of 9～13mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the SiO of 25～65ppm
2, the CaO of 120～450ppm, the Nb of 280～550ppm
2O
5, 450～950ppm Co
2O
3V with 180～350ppm
2O
5
3. soft magnetic ferrite as claimed in claim 1 or 2 is characterized in that, described soft magnetic ferrite comprises principal component and additive, and wherein, principal component comprises according to molar percentage: the Fe of 53～53.8mol%
2O
3, the MnO of 35～35.5mol% and the ZnO of 10.7～11.3mol%; Additive comprises according to the weight percent meter that accounts for described soft magnetic ferrite: the SiO of 30～50ppm
2, the CaO of 150～400ppm, the Nb of 300～500ppm
2O
5, 500～900ppm Co
2O
3V with 200～300ppm
2O
5
4. such as each described soft magnetic ferrite of claim 1-3, it is characterized in that described soft magnetic ferrite is comprised of principal component and additive, wherein, principal component is according to the Fe of molar percentage by 53～53.8mol%
2O
3, the MnO of 35～35.5mol% and 10.7～11.3mol% ZnO form; Additive is according to the SiO of the weight percent meter that accounts for described soft magnetic ferrite by 30～50ppm
2, the CaO of 150～400ppm, the Nb of 300～500ppm
2O
5, 500～900ppm Co
2O
3V with 200～300ppm
2O
5Form.
5. such as the purposes of each described soft magnetic ferrite of claim 1-4, it is characterized in that described soft magnetic ferrite is for the preparation of FERRITE CORE.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174933A (en) * | 2015-08-31 | 2015-12-23 | 天长市中德电子有限公司 | Preparation method for soft magnetic ferrite with high saturation magnetic induction strength and high magnetic permeability |
| CN105174934A (en) * | 2015-08-31 | 2015-12-23 | 天长市中德电子有限公司 | Preparation method for soft magnetic ferrite with high saturation magnetic induction strength, wide temperature range and low loss |
| CN107151137A (en) * | 2017-05-23 | 2017-09-12 | 安徽省东方磁磁铁制造有限公司 | A kind of Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN109494040A (en) * | 2018-10-11 | 2019-03-19 | 天长市中德电子有限公司 | A kind of low loss soft magnetic ferrite material and its application |
| CN112456994A (en) * | 2020-11-27 | 2021-03-09 | 天通控股股份有限公司 | Low-temperature sintered high-frequency low-loss MnZn soft magnetic ferrite and preparation method thereof |
| CN113277840A (en) * | 2021-05-10 | 2021-08-20 | 天通控股股份有限公司 | High-frequency high-working-flux-density low-loss manganese-zinc ferrite and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107151137A (en) * | 2017-05-23 | 2017-09-12 | 安徽省东方磁磁铁制造有限公司 | A kind of Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN109494040A (en) * | 2018-10-11 | 2019-03-19 | 天长市中德电子有限公司 | A kind of low loss soft magnetic ferrite material and its application |
| CN112456994A (en) * | 2020-11-27 | 2021-03-09 | 天通控股股份有限公司 | Low-temperature sintered high-frequency low-loss MnZn soft magnetic ferrite and preparation method thereof |
| CN113277840A (en) * | 2021-05-10 | 2021-08-20 | 天通控股股份有限公司 | High-frequency high-working-flux-density low-loss manganese-zinc ferrite and preparation method thereof |
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