CN101381226A - Manganese-zinc ferrite - Google Patents
Manganese-zinc ferrite Download PDFInfo
- Publication number
- CN101381226A CN101381226A CNA2008101561826A CN200810156182A CN101381226A CN 101381226 A CN101381226 A CN 101381226A CN A2008101561826 A CNA2008101561826 A CN A2008101561826A CN 200810156182 A CN200810156182 A CN 200810156182A CN 101381226 A CN101381226 A CN 101381226A
- Authority
- CN
- China
- Prior art keywords
- weight
- loss
- ferrite
- flux density
- magnetic flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Soft Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
Abstract
The invention relates to mangan-zinc ferrite, which is characterized in comprising primary components and secondary components, wherein the primary components comprise 52.0 to 59.0 mol percent of Fe2O3, 4.0 to 10 mol percent of ZnO, and the balance of MnO, the secondary components comprise 0.02 to 0.04 weight percent of SiO2, 0.01 to 0.4 weight percent of CaO, 0.01 to 0.2 weight percent of Nb2O5, 0.03 to 1.5 weight percent of MgO, and 0.1 to 0.8 weight percent of CoO. The mangan-zinc ferrite is applicable to magnetic cores of power transformers, achieves low loss and high saturation magnetic flux density and high permeability in a wide frequency range, can be widely used and can be held in other moulds for mass production.
Description
Technical field
The present invention relates to a kind of ferrite, specifically relate to a kind of Mn-Zn ferrite that is used for power supply with the magnetic core of transformer, in the wide frequency band of 100kHz～1MHz loss less, and have high saturation magnetic flux density, high magnetic permeability.
Background technology
Along with science and technology development, electron device just is being tending towards miniaturization, lightness and operating frequency high frequencyization, and this is to the demands for higher performance of Mn-Zn FERRITE CORE.Contain a lot of restrictions in Mn in the past-Zn ferrite and use the material of driving frequency, for example, magnetic permeability height under the frequency about 100kHz, and low-loss material.Corresponding with the miniaturization of transformer, it also is very important having high magnetic flux density.And, in recent years, along with the development of power supply with the high frequencyization of the miniaturization of transformer and driving frequency, people are also seeking a kind of method that reduces in the wide frequency band thereby the loss that bring former by high harmonic etc. when pursuing high saturation magnetic flux density.But existing material has following shortcoming: the loss in the high frequency band is very high, if but change it in the high frequency band low loss material, saturation magnetic flux density will step-down, magnetic permeability also lower (about 1500) simultaneously.
As the Ferrite Material of high frequency band, under the frequency of 100kHz～number MHz, add various additives for Mn-Zn based ferrite, show the material of low loss.Mainly is to turn to target with low loss as these high frequency bands with material, but has ignored the saturation magnetic flux density relevant with the transformer miniaturization of no less important.On the contrary, the high saturation magnetic flux density material is also perfect inadequately to the consideration of the loss of high frequency band.
In general, under the wide frequency band of 100kHz～1MHz, it is very difficult can taking into account low-loss and high saturation magnetic flux density.Be reduced in the loss of high frequency band, will reduce firing temperature, suppress crystalline and grow up.But will cause thus, the decline of saturation magnetic flux density.And, well-known, in order fully to obtain saturation magnetic flux density, will add the Fe of wonderful works ultimate constituent
2O
3Content, but in this case, the minimum value of power loss (Pcv min) will move to low temperature side, can increase loss on the contrary.Therefore, this method and impracticable.Present FERRITE CORE, the two can not be taken into account, and is unsuitable for mass production.
Summary of the invention
In order to overcome the above problems a little, the object of the present invention is to provide a kind of Mn-Zn ferrite of under wide frequency band, taking into account low-loss and high saturation magnetic flux density.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of Mn-Zn ferrite is characterized in that comprising principal constituent and minor component, and described principal constituent is the Fe of 52.0～59.0mol%
2O
3, 4.0～10mol% ZnO, residue for MnO; Minor component is the SiO of 0.002～0.04 weight %
2, the CaO of 0.01～0.4 weight %, the Nb of 0.01～0.2 weight %
2O
5, the MgO of 0.03～1.5 weight %, the CoO of 0.1～0.8 weight %.
Aforesaid Mn-Zn ferrite is characterized in that described Fe
2O
3Be 55.5mol%, ZnO is 7.0mol%, and MnO is 37.5mol%, SiO
2Be 0.007 weight %, CaO is 0.06 weight %, Nb
2O
5Be 0.04 weight %, MgO is 0.7 weight %, and CoO is 0.3 weight %.
Aforesaid Mn-Zn ferrite is characterized in that described Mn-Zn ferrite, and the minimum value of its loss is when 100kHz-200mT and 1MHz-50mT, in 40～100 ℃ of scopes.
Aforesaid Mn-Zn ferrite is characterized in that the minimum value of described loss, when 100kHz-200mT and 1MHz-50mT, all at 500kW/m
3Below.
Aforesaid Mn-Zn ferrite is characterized in that described Mn-Zn ferrite, when its saturation magnetic flux density is 23 ℃ more than 530mT, 100 ℃ the time more than 430mT.
The effect of invention: Mn-Zn ferrite of the present invention is applicable to magnetic cores such as changing piezoelectric transformer, can in the wide frequency band of 100kHz～1MHz, take into account low loss and saturated high magnetic flux density, high magnetic permeability, the loss minimum temperature is at 60-80 degree, but and widespread use, can apply mechanically other mould mass production.
Description of drawings
Fig. 1 is the synoptic diagram of loss (Pcv) temperature profile when 50mT (1MHz-) of main moiety different in the embodiments of the invention 1;
Fig. 2 is the synoptic diagram of MgO different in the embodiments of the invention 2, loss (Pcv) temperature profile of CoO content when 50mT (1MHz-).
Embodiment
Below in conjunction with specific embodiment the present invention is done concrete introduction.
Embodiment 1
As shown in table 1, will measure as highly purified ferric oxide, manganese oxide and the zinc oxide of moiety, and mix, in atmosphere with 950 ℃ of pre-burnings 2 hours.The SiO that in the pre-burning raw material, adds 0.007 weight %
2, the CaO of 0.06 weight %, the Nb of 0.04 weight %
2O
5, the MgO of 0.7 weight %, the CoO of 0.3 weight %, and come it is pulverized with the sand mill powder particle diameter of 1.7 μ m.Add polyvinyl alcohol afterwards and carry out granulation in comminuted powder, the granulated pellet that obtains carries out moulding according to the ring-type of external diameter 24mm, internal diameter 19mm, high 10mm.Afterwards, the peak temperature of control oxygen partial pressure in originally burning till, after keeping 4 hours under 1350 ℃ the temperature, lower the temperature, after obtaining burning till the sample after the end, measure with sand mill, obtain the loss (100kHz-200mT and 1MHz-50mT, measure 23～120 ℃ of temperature) of sample and in the saturation magnetic flux density of maximum magnetic flux circle 1194A/m.Table 1 has just been expressed each loss minimum value, temperature and saturation magnetic flux density on 23 ℃ and 100 ℃ of forming, has also provided several inappropriate comparative examples in the table simultaneously.And, the loss temperature profile when in Fig. 1, also having expressed 1MHz-50mT, Fig. 1 is the synoptic diagram of loss (Pcv) temperature profile when 50mT (1MHz-) of main moiety different in the embodiments of the invention 1.From table 1 and Fig. 1 obviously as can be seen: in principal constituent compositing range of the present invention, the loss minimum value within 40～100 ℃ scope, when and 100kHz-200mT, 1MHz-50mT all at 500kW/m
3Below.And saturation magnetic flux density when also being respectively 23 ℃ more than 530mT, 100 ℃ the time more than 430mT.
Table 1
Embodiment 2
The present embodiment principal constituent adopts the composition combination of the example 3 among the embodiment 1, SiO in the minor component
2, CaO, Nb
2O
5Weight ratio also adopt ratio among the embodiment 1, the ratio of MgO, CoO is adjusted, all the other are consistent with embodiment 1.
Be specially: according to Fe
2O
3: 55.5mol%, ZnO:7.0mol% and remainder are that the ratio of MnO is measured highly purified ferric oxide, zinc oxide, manganese oxide and mixed, in atmosphere with 950 ℃ temperature pre-burning 2 hours.And in this pre-burning raw material, add the SiO of 0.007 weight % in proportion
2, the CaO of 0.06 weight %, the Nb of 0.04 weight %
2O
5And according to the adding of the component shown in the table 2 MgO, CoO.Afterwards, be made into embodiment 1 same sample and estimate.The temperature profile of the loss when being displayed in Table 2 loss minimum value, temperature and numerical value, the saturation magnetic flux density in the time of 23 ℃, 100 ℃ and 1MHz-50mT, Fig. 2 is the synoptic diagram of MgO different in the embodiments of the invention 2, loss (Pcv) temperature profile of CoO content when 50mT (1MHz-).Can find out obviously that by table 2, Fig. 2 in minor component of the present invention, in the interpolation scope of MgO, CoO, the loss minimum value is in 40 ℃～100 ℃ scopes, when and 100kHz-200mT, 1MHz-50mT, all at 500kW/m
3Below.
Table 2
Principal constituent among the present invention is Fe
2O
3, MnO, ZnO, have following scope to limit: the Fe of 52.0～59.0mol%
2O
3, 4.0～10mol% ZnO, all the other are MnO.Reason is: Fe
2O
3Drop to 52.0mol% and can cause saturation magnetic flux density low when following, but reach the increase that 59.0mol% will cause the loss of high frequency band when above.Same, when ZnO drops to 4.0mol%, can cause saturation magnetic flux density low, rise to the increase that then can cause the loss of high frequency band more than the 10mol% again, aforementioned proportion is determined by a large amount of experiments.
On the basis of above principal constituent, add SiO simultaneously as minor component
2, CaO, V
2O
5, Nb
2O
5, MgO, CoO.Because SiO
2, CaO can coexist, so just improved the ratio opposing on grain circle, reduced the eddy current loss.Nb
2O
5With SiO
2, CaO separates out a boundary together, forms high opposing, and then reduce the wastage.Nb
2O
5Suppress the generation that intragranular pore and unusual grain are grown up, particle diameter is trickle, the combination homogeneous, and crystallization is formed and also is tending towards stable, the effect that has suppressor loss to worsen.And, if will be used to keep the Fe of target flux density
2O
3, MnO, ZnO be as main moiety, and loss minimum value (Pcv min) is reduced to below 40 ℃, CoO is as Co in Mn-Zn ferrite in 0～100 ℃ of scope
2+Solute, Co
2+As positive pole and Fe
2+The negative pole of representative contradicts each other, the result produces the small anisotropy of an absolute value and temperature variation, the effect that minimizing change of the temperature profile of this vast temperature range from low temperature to high temperature is arranged simultaneously, improves the effect of the saturation magnetic flux density of normal temperature in addition.These minor components are if burn till the rear oxidation thing, the structure in the time of just need not comprehending its and add; And as long as contained this interpolation before originally burning till, so, carrying out in any one operation can.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.
Claims (5)
1, Mn-Zn ferrite is characterized in that comprising principal constituent and minor component, and described principal constituent is the Fe of 52.0～59.0mol%
2O
3, 4.0～10mol% ZnO, residue for MnO; Minor component is the SiO of 0.002～0.04 weight %
2, the CaO of 0.01～0.4 weight %, the Nb of 0.01～0.2 weight %
2O
5, the MgO of 0.03～1.5 weight %, the CoO of 0.1～0.8 weight %.
2, Mn-Zn ferrite according to claim 1 is characterized in that described Fe
2O
3Be 55.5mol%, ZnO is 7.0mol%, and MnO is 37.5mol%, SiO
2Be 0.007 weight %, CaO is 0.06 weight %, Nb
2O
5Be 0.04 weight %, MgO is 0.7 weight %, and CoO is 0.3 weight %.
3, Mn-Zn ferrite according to claim 1 is characterized in that described Mn-Zn ferrite, and the minimum value of its loss is when 100kHz-200mT and 1MHz-50mT, in 40～100 ℃ of scopes.
4, Mn-Zn ferrite according to claim 3 is characterized in that the minimum value of described loss, when 100kHz-200mT and 1MHz-50mT, all at 500kW/m
3Below.
5, Mn-Zn ferrite according to claim 1 is characterized in that described Mn-Zn ferrite, when its saturation magnetic flux density is 23 ℃ more than 530mT, 100 ℃ the time more than 430mT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101561826A CN101381226A (en) | 2008-10-06 | 2008-10-06 | Manganese-zinc ferrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101561826A CN101381226A (en) | 2008-10-06 | 2008-10-06 | Manganese-zinc ferrite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101381226A true CN101381226A (en) | 2009-03-11 |
Family
ID=40461311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101561826A Pending CN101381226A (en) | 2008-10-06 | 2008-10-06 | Manganese-zinc ferrite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101381226A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408225A (en) * | 2011-07-29 | 2012-04-11 | 陆明岳 | High temperature high saturation magnetic flux density ferrite material |
| CN102503396A (en) * | 2011-11-28 | 2012-06-20 | 无锡斯贝尔磁性材料有限公司 | High-frequency low-loss MnZn ferrite and preparation method thereof |
| CN104078186A (en) * | 2014-06-27 | 2014-10-01 | 霍山东磁电子有限公司 | Zinc-base ferrite core material |
| CN104124026A (en) * | 2014-06-25 | 2014-10-29 | 蚌埠市英路光电有限公司 | Niobium-based rare earth ferromagnetic core material |
| CN104392819A (en) * | 2014-05-20 | 2015-03-04 | 深圳顺络电子股份有限公司 | Composite soft magnetic material and preparation method thereof |
| CN107540362A (en) * | 2017-09-08 | 2018-01-05 | 横店集团东磁股份有限公司 | A kind of MnZn ferrite material for ups power and preparation method thereof |
| CN109133899A (en) * | 2018-09-12 | 2019-01-04 | 横店集团东磁股份有限公司 | A kind of high-frequency and low-consumption magnesium doping manganese-zinc ferrite and preparation method thereof |
| CN110304913A (en) * | 2019-07-04 | 2019-10-08 | 湖北文理学院 | A kind of high frequency ultra-low loss Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN114085077A (en) * | 2021-12-27 | 2022-02-25 | 天通凯立科技有限公司 | High-frequency low-loss manganese-zinc ferrite for fine adjustment of ferrous ions and preparation method thereof |
-
2008
- 2008-10-06 CN CNA2008101561826A patent/CN101381226A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102408225B (en) * | 2011-07-29 | 2013-03-27 | 临沂中瑞电子有限公司 | High temperature high saturation magnetic flux density ferrite material |
| CN102408225A (en) * | 2011-07-29 | 2012-04-11 | 陆明岳 | High temperature high saturation magnetic flux density ferrite material |
| CN102503396A (en) * | 2011-11-28 | 2012-06-20 | 无锡斯贝尔磁性材料有限公司 | High-frequency low-loss MnZn ferrite and preparation method thereof |
| CN104392819B (en) * | 2014-05-20 | 2017-03-29 | 深圳顺络电子股份有限公司 | A kind of compound soft magnetic material and preparation method thereof |
| CN104392819A (en) * | 2014-05-20 | 2015-03-04 | 深圳顺络电子股份有限公司 | Composite soft magnetic material and preparation method thereof |
| CN104124026A (en) * | 2014-06-25 | 2014-10-29 | 蚌埠市英路光电有限公司 | Niobium-based rare earth ferromagnetic core material |
| CN104124026B (en) * | 2014-06-25 | 2017-02-08 | 张丽琴 | Niobium-based rare earth ferromagnetic core material |
| CN104078186A (en) * | 2014-06-27 | 2014-10-01 | 霍山东磁电子有限公司 | Zinc-base ferrite core material |
| CN107540362A (en) * | 2017-09-08 | 2018-01-05 | 横店集团东磁股份有限公司 | A kind of MnZn ferrite material for ups power and preparation method thereof |
| CN109133899A (en) * | 2018-09-12 | 2019-01-04 | 横店集团东磁股份有限公司 | A kind of high-frequency and low-consumption magnesium doping manganese-zinc ferrite and preparation method thereof |
| CN110304913A (en) * | 2019-07-04 | 2019-10-08 | 湖北文理学院 | A kind of high frequency ultra-low loss Mn-Zn soft magnetic ferrite and preparation method thereof |
| CN114085077A (en) * | 2021-12-27 | 2022-02-25 | 天通凯立科技有限公司 | High-frequency low-loss manganese-zinc ferrite for fine adjustment of ferrous ions and preparation method thereof |
| CN114085077B (en) * | 2021-12-27 | 2022-10-14 | 天通凯立科技有限公司 | High-frequency low-loss manganese-zinc ferrite for fine adjustment of ferrous ions and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101381226A (en) | Manganese-zinc ferrite | |
| CN102300830B (en) | MnZn ferrite core and manufacturing method therefor | |
| CN101925556B (en) | MnZn ferrite and magnetic core for transformer | |
| CN103496963A (en) | Ni-free MnZn ferrite magnetic core with double characteristics and manufacture method | |
| CN110204325B (en) | Ferrite material and preparation method thereof | |
| CN103693949A (en) | Soft magnetic NiCuZn ferrite material with characteristics of wide temperature range, low temperature coefficient, high frequency and low loss, and preparation method thereof | |
| JP2007197245A (en) | Mn-Co-Zn FERRITE AND MAGNETIC CORE FOR TRANSFORMER | |
| CN103382104B (en) | Rare-earth-doped soft-magnetic ferrite and preparation method thereof | |
| JP4711897B2 (en) | MnCoZn ferrite and transformer core | |
| CN104211385A (en) | Ferrite core and transformer | |
| CN101521073A (en) | Manganese-zinc ferrite with low loss and high saturation magnetic flux density | |
| CN103964832A (en) | MnZn ferrite material of low loss and high saturation magnetic flux density and preparation method of MnZn ferrite material | |
| JP3490504B2 (en) | Low-loss oxide magnetic material | |
| CN101381227A (en) | Mn-Zn ferrite | |
| CN103613370A (en) | Preparation method for high-temperature and high-BS manganese zinc ferrite material with low power consumption | |
| JP3288113B2 (en) | Mn-Zn ferrite magnetic material | |
| JP2004247370A (en) | MnZn FERRITE | |
| JPH113813A (en) | Ferrite material | |
| JP2010120808A (en) | MnZn FERRITE AND METHOD OF PRODUCING THE SAME | |
| JP2016056051A (en) | MnZn-BASED FERRITE AND MnZn-BASED FERRITE LARGE SIZE CORE | |
| JP2008169072A (en) | Mn-Zn FERRITE | |
| JP2007197246A (en) | Mn-Co-Zn FERRITE AND MAGNETIC CORE FOR TRANSFORMER | |
| JP5845137B2 (en) | Method for producing Mn-Zn ferrite | |
| JP2004247371A (en) | MnZn FERRITE | |
| JP2011162366A (en) | MnZnNi-BASED FERRITE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090311 |