CN100491569C - Magnesium-zine-series ferrite and preparing method - Google Patents
Magnesium-zine-series ferrite and preparing method Download PDFInfo
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- CN100491569C CN100491569C CNB2006100338850A CN200610033885A CN100491569C CN 100491569 C CN100491569 C CN 100491569C CN B2006100338850 A CNB2006100338850 A CN B2006100338850A CN 200610033885 A CN200610033885 A CN 200610033885A CN 100491569 C CN100491569 C CN 100491569C
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- oxide
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- ferrite
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Abstract
This invention relates to a ferrite of Mg-Zn series and its preparation method including a primary composition and a sub-composition, in which, said primary composition includes Fe2O3, ZnO and MgO in the following mol percentages: Fe<SUB>2</SUB>0<SUB>3</SUB>: 47.5mol%-52.3mol%, ZnO: 23mol%-27mol%, MgO:21mol-25.8mol%, said sub-composition includes Mn oxide and Cu oxide, which provides a ferrite of Mg-Zn series similar to that of Ni-Zn series having strong wicking and anti-cracking performance and suitable for IF and HF transformers, inductors and filters.
Description
[technical field]
It is low and be applicable to the magnesium-zine-series ferrite of devices such as medium-high frequency transformer, inducer, wave filter, solenoid and the preparation method of this magnesium-zine-series ferrite to the present invention relates to a kind of preparation cost.
[background technology]
Fast development along with the information industry technology, the manufacturing technology of electronics is updated and is upgraded, the nickel-zinc ferrite demand increases day by day, and nickel is as a kind of strategic materials, and belong to valuable rare metal, this class rare metal spurt in prices in recent years causes the nickel-zinc ferrite cost to increase.The making sintering process of magnesium Zn soft magnetic ferrite, the similar nickel-zinc ferrite of electromagnetic performance, be adapted to the magnetic core of medium-high frequency section as inductive elements such as transformer, inducer, wave filter, solenoids, MgZn ferrite is because the magnesium oxide price that is adopted is more much lower than nickel protoxide, can reach the desired electromagnetic performance of part inductive element again, so this material is cheaply used and can be reduced cost, and reduces the consumption of valuable rare metal nickel.
In recent years, magnesium Zn soft magnetic ferrite technology has obtained increasing concern, number for the application of CN200410093230.3 discloses a kind of soft magnetic Mg-Zn ferrite material and low temperature sintering technology thereof, a kind of Mg-Zn soft magnetic ferrite is by Fe as Chinese patent application
2O
3, MgO, ZnO, Mn
3O
4, CuO forms, and it is characterized in that each composition and consumption thereof are as follows: Fe
2O
347.5-48.7wt%, MgO 25.5-30.0wt%, ZnO18.0-21.4wt%, Mn
3O
4Low-temperature sinterings such as 0.5-1.2wt%, flux 3.0-4.2wt%, auxiliary material 0-5wt% form.And for example Chinese patent application number discloses a kind of Anti-Interference Magnesium Zinc Ferrite and Manufacturing Approach for the application of CN200410053529.6, it is that magnesium oxide, zinc oxide, three kinds of main components of ferric oxide are prepared burden, being mixed in proportion the back calcined 30-90 minute down at 1000 ℃～1200 ℃, add secondary component materials and additive then in proportion, after pulverizing mixing, adding that tackiness agent mixes and adopt the mist projection granulating method to obtain average particulate diameter is 180 microns particle, with particle compression moulding, obtain needed magnetic core sample then; Progressively be warmed up to 1250 ℃～1350 ℃, and under the temperature that sets heat preservation sintering 2～5 hours, obtain the sample of being fired after the cooling; The magnesium oxide of 8～27mol% (pressing MgO calculates), the zinc oxide of 7～27mol% (pressing ZnO calculates) are arranged in its sample, and 30～36.7mol% (presses Fe
2O
3Calculating) three kinds of main components of ferric oxide, wherein also can add has one or more minor components, and it comprises: 0～4mol% (presses MnCO
3Calculating) nickel oxide, the 0～4mol% of manganous carbonate, 0～4mol% (pressing NiO calculates) (press CuCO
3Calculating) copper carbonate.And for example Japanese Patent No. be 2806528B2 patent disclosure a kind of wave absorber with magnesium-Zn ferrite material, it is ferric oxide 47～50mol%, magnesium oxide 20～23mol%, zinc oxide 24～27mol%, wave absorber magnesium-Zn ferrite material that the low-frequency range of manganese oxide 3～6mol% composition tabular sintered body 30MHz～400MHz is used.
And the disclosed material of above-mentioned patent application document mainly uses on absorption of electromagnetic wave and deflection device, if make the used magnetic cores of perceptual components and parts such as transformer, inducer, wave filter and solenoid, sintering temperature is higher, and high temperature wicking poor performance is used to have defective.
[summary of the invention]
In order to overcome the above-mentioned shortcoming of prior art, the invention provides and a kind ofly be adapted to that devices such as medium-high frequency transformer, inducer, wave filter use, preparation technology is simple, cost of manufacture is low and its high temperature wicking excellent performance, than magnesium-zine-series ferrite of high saturation magnetic flux density and preparation method thereof.
For this reason, the technical solution adopted for the present invention to solve the technical problems is: a kind of magnesium-zine-series ferrite, comprise principal constituent and minor component, described principal constituent comprises ferric oxide, zinc oxide and magnesium oxide, it is characterized in that: described principal constituent in the mole percent level of standard substance separately is: Fe
2O
3Be 49.6mol%-51.8mol%, ZnO is 24.5mol%-26.8mol%, MgO is 22.5mol%-24.5mol%, described minor component comprises Mn oxide and copper oxide, described relatively principal constituent total amount, the Mn oxide in the described minor component, copper oxide are MnO in the weight percent content of standard substance separately
20.08wt%-2wt%, CuO are 3wt%-4.1wt%, and described minor component also comprises at least a in cobalt/cobalt oxide and the barium oxide, described relatively principal constituent total amount, and cobalt/cobalt oxide and barium oxide are Co in the weight percent content of standard substance separately
2O
3Be 0.0005wt%-0.02wt%, V
2O
5Be 0.001wt%-0.02wt%, and the I shape series magnetic core of being made by magnesium-zine-series ferrite, its end face 0.2mm-0.4mm highly soaked in 450 ℃ ± 20 ℃ high temperature tin stove 3 seconds-5 seconds, not explosion of magnetic core.
The manufacture method of described magnesium-zine-series ferrite comprises the steps:
A, with three kinds of principal constituent Fe
2O
3, MgO, ZnO and each minor component mix hold concurrently grind, pre-burning, obtain powder through pre-burning;
B, will through the powder of pre-burning and tackiness agent etc. mix hold concurrently grind, spraying drying, obtaining median size Φ is the particulate material of 80 μ m～300 μ m;
C, particulate material compacting is obtained formed body, maybe will suppress the further machining of the formed body that obtains and obtain new formed body, with formed body at 1050 ℃～1200 ℃ sintering temperatures, sintered heat insulating time 100min～250min, sintering process is to adopt the air kiln sintering.
The air kiln sintering is adopted in described pre-burning, and its calcined temperature is 850 ℃～1000 ℃, and the pre-burning soaking time is 100min～250min.
Described ferrite is made as I shape series magnetic core, its end face 0.2mm～0.4mm is highly soaked in 450 ℃ ± 20 ℃ high temperature tin stove 3 seconds～5 seconds not explosion of magnetic core.
Positively effect of the present invention is: 1, the magnesium-zine-series ferrite material of gained is at 1KHz, and initial permeability μ i is 350 ± 25% in the time of 25 ℃, Curie temperature Tc 〉=150 ℃, and in the magnetic field of H=1600A/m, saturation magnetic flux density Bs 〉=270mT in the time of 25 ℃; The gained magnesium-zine-series ferrite is made I shape series magnetic core, and its end face 0.2mm～0.4mm highly soaked in 450 ℃ ± 20 ℃ high temperature tin stove 3 seconds～5 seconds, and not explosion of magnetic core is used to adapt to follow-up processing.2, major and minor reasonable raw material proportioning all is the optimization of doing at the actual state of the easy explosion of high temperature wicking, the difficult acquisition of crystalline-granular texture homogeneity and poor controllability.3, preparation technology is simple, and cost is low, and sintering temperature is low, the agglomerating plant long service life.
Magnesium-zine-series ferrite of the present invention is selected each principal constituent suitable proportioning, cooperates the minor component prescription of corresponding characteristic, adopts lower calcined temperature and sintering temperature, makes it to obtain even more ideal microtexture and good magnetic core performance.
The invention will be further described below in conjunction with embodiment.
[embodiment]
Embodiment 1
With the Shanghai Baosteel Fe of company
3O
449.8mol%, middle fringe MgO 24.4mol%, capital, Shanghai ZnO25.8mol% adds as principal constituent, adds minor component 3.4wt%CuO, 0.8%MnCO
3Pass through mixed above-mentioned principal constituent and minor component and grinding; Pre-burning in air kiln, pre-burning holding temperature are 960 ℃ ± 10 ℃, soaking time 2 hours; To mix double sand milling, mist projection granulating through subsidiary material such as the powder of pre-burning and tackiness agent such as polyvinyl alcohol, dispersion agent, defoamers, controlling its median size Φ is 80 μ m～300 μ m; Particulate material is suppressed the toroidal core of H25mm * 15mm * 7.5mm, the I shape magnetic core of compacting and cutting DR8mm * 10mm.Above magnetic core is progressively heated up in air kiln, be incubated 3.5 hours down, progressively cooling then, magnetic core numbering N1 at 1100 ℃ ± 10 ℃.
Embodiment 2
With the Shanghai Baosteel Fe of company
3O
450.5mol%, middle fringe MgO 23.4mol%, capital, Shanghai ZnO 26.1mol% adds as principal constituent, adds minor component 4.1wt%CuO, 0.4%MnCO
3, add other minor components 0.004wt%Co
2O
3, 0.003V
2O
5Pass through mixed above-mentioned principal constituent and minor component and grinding; Pre-burning in air kiln, pre-burning holding temperature are 940 ℃ ± 10 ℃, soaking time 2.5 hours; To mix double sand milling, mist projection granulating through subsidiary material such as the powder of pre-burning and tackiness agent such as polyvinyl alcohol, dispersion agent, defoamers, controlling its median size Φ is 80 μ m～300 μ m; Particulate material is suppressed the toroidal core of H25mm * 15mm * 7.5mm, the I shape magnetic core of compacting and cutting DR8mm * 10mm.Above magnetic core is progressively heated up in air kiln, be incubated 3 hours down, progressively cooling then, magnetic core numbering N2 at 1120 ℃ ± 10 ℃.
Embodiment 3
With the Shanghai Baosteel Fe of company
3O
451.3mol%, middle fringe MgO 24.0mol%, capital, Shanghai ZnO24.7mol% adds as principal constituent, adds minor component 4.1wt%CuO, 0.3%MnCO
3, add other minor components 0.002wt%Co
2O
3, 0.003V
2O
5Pass through mixed above-mentioned principal constituent and minor component and grinding; Pre-burning in air kiln, pre-burning holding temperature are 920 ℃ ± 10 ℃, soaking time 3 hours; To mix double sand milling, mist projection granulating through subsidiary material such as the powder of pre-burning and tackiness agent such as polyvinyl alcohol, dispersion agent, defoamers, controlling its median size Φ is 80 μ m～300 μ m; Particulate material is suppressed the toroidal core of H25mm * 15mm * 7.5mm, the I shape magnetic core of compacting and cutting DR8mm * 10mm.Above magnetic core is progressively heated up in air kiln, be incubated 2.5 hours down, progressively cooling then, magnetic core numbering N3 at 1150 ℃ ± 10 ℃.
Embodiment 4
With the Shanghai Baosteel Fe of company
3O
451.7mol%, middle fringe MgO 23.4mol%, capital, Shanghai ZnO24.9mol% adds as principal constituent, adds minor component 3.8wt%CuO, 0.7%MnCO
3, add other minor components 0.002wt%Co
2O
3, 0.002V
2O
5Pass through mixed above-mentioned principal constituent and minor component and grinding; Pre-burning in the kiln gas kiln, pre-burning holding temperature are 900 ℃ ± 10 ℃, soaking time 3.5 hours; To mix double sand milling, mist projection granulating through subsidiary material such as the powder of pre-burning and tackiness agent such as polyvinyl alcohol, dispersion agent, defoamers, controlling its median size Φ is 80 μ m～300 μ m; Particulate material is suppressed the toroidal core of H25mm * 15mm * 7.5mm, the I shape magnetic core of compacting and cutting DR8mm * 10mm.Above magnetic core is progressively heated up in air kiln, be incubated 2 hours down, progressively cooling then, magnetic core numbering N4 at 1180 ℃ ± 10 ℃.
Every group of embodiment toroidal core got 10 tests, and calculating mean value records the table 1 that the results are shown in of this sample.Every group of embodiment I shape magnetic core got 20, its end face 0.2mm～0.4mm highly soaked in 450 ℃ ± 20 ℃ high temperature tin stove 3 seconds～5 seconds the explosion situation of magnetic core such as following table 1.
Table 1 The performance test results
| Sample | μ i1KHz，25℃ | Bs，mT H＝1600A/m，25℃ | Tc，℃ | 450 ℃ ± 20 ℃ wickings 3～5 seconds |
| N1 | 399 | 268 | 171 | Not explosion |
| N2 | 381 | 283 | 175 | Not explosion |
| N3 | 350 | 276 | 182 | Not explosion |
| N4 | 362 | 282 | 184 | Not explosion |
| Korea S three and nickel Zinc material L-82 | 350±20％ | 220 | 120 | Not explosion |
By table 1 as seen, the similar Ni-Zn series ferrite of magnesium-zine-series ferrite electromagnetic performance of the present invention, and have the anti-burst energy of good wicking, can satisfy the use of medium-high frequency transformer, inducer, wave filter.
Claims (1)
1. a magnesium-zine-series ferrite comprises principal constituent and minor component, and described principal constituent comprises ferric oxide, zinc oxide and magnesium oxide, it is characterized in that: described principal constituent in the mole percent level of standard substance separately is: Fe
2O
3Be 49.6mol%-51.8mol%, ZnO is 24.5mol%-26.8mol%, MgO is 22.5mol%-24.5mol%, described minor component comprises Mn oxide and copper oxide, described relatively principal constituent total amount, the Mn oxide in the described minor component, copper oxide are MnO in the weight percent content of standard substance separately
20.08wt%-2wt%, CuO are 3wt%-4.1wt%, and described minor component also comprises at least a in cobalt/cobalt oxide and the barium oxide, described relatively principal constituent total amount, and cobalt/cobalt oxide and barium oxide are Co in the weight percent content of standard substance separately
2O
3Be 0.0005wt%-0.02wt%, V
2O
5Be 0.001wt%-0.02wt%, and the I shape series magnetic core of being made by magnesium-zine-series ferrite, its end face 0.2mm-0.4mm highly soaked in 450 ℃ ± 20 ℃ high temperature tin stove 3 seconds-5 seconds, not explosion of magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100338850A CN100491569C (en) | 2006-02-27 | 2006-02-27 | Magnesium-zine-series ferrite and preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100338850A CN100491569C (en) | 2006-02-27 | 2006-02-27 | Magnesium-zine-series ferrite and preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN1814839A CN1814839A (en) | 2006-08-09 |
| CN100491569C true CN100491569C (en) | 2009-05-27 |
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|---|---|---|---|
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360678B (en) * | 2011-06-27 | 2013-02-13 | 海安县鹰球粉末冶金有限公司 | Magnetically soft ferrite thermosensitive magnetic core and preparation method thereof |
| CN102557602A (en) * | 2011-12-30 | 2012-07-11 | 南通鼎源电子磁材有限公司 | High-initial-permeability (mu i) and high-Curie-temperature magnesium-zinc ferrite material and preparation method thereof |
| CN102557606A (en) * | 2012-03-16 | 2012-07-11 | 南京深宁磁电有限公司 | Preparation method for magnesium-zinc soft ferrite material and magnesium-zinc soft ferrite material |
| CN104446408B (en) | 2013-09-25 | 2016-12-07 | 比亚迪股份有限公司 | A kind of absorbing material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2806528B2 (en) * | 1988-05-28 | 1998-09-30 | 富士電気化学株式会社 | Magnesium-zinc ferrite material for radio wave absorber |
| US6200493B1 (en) * | 1998-05-20 | 2001-03-13 | Tdk Corporation | MnMgCuZn ferrite material |
| CN1587192A (en) * | 2004-08-05 | 2005-03-02 | 秦会斌 | Anti-interference magnesium-zinc ferrite and producing method |
| CN1651353A (en) * | 2004-12-15 | 2005-08-10 | 横店集团东磁有限公司 | Soft magnetic Mg-Zn ferrite material and its low temperature sintering technology |
-
2006
- 2006-02-27 CN CNB2006100338850A patent/CN100491569C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2806528B2 (en) * | 1988-05-28 | 1998-09-30 | 富士電気化学株式会社 | Magnesium-zinc ferrite material for radio wave absorber |
| US6200493B1 (en) * | 1998-05-20 | 2001-03-13 | Tdk Corporation | MnMgCuZn ferrite material |
| CN1587192A (en) * | 2004-08-05 | 2005-03-02 | 秦会斌 | Anti-interference magnesium-zinc ferrite and producing method |
| CN1651353A (en) * | 2004-12-15 | 2005-08-10 | 横店集团东磁有限公司 | Soft magnetic Mg-Zn ferrite material and its low temperature sintering technology |
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| CN1814839A (en) | 2006-08-09 |
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Effective date of registration: 20061208 Address after: Development Zone of Ruyuan Yao Autonomous County, Shaoguan, Guangdong Applicant after: Ruyuan Dong Yang Guang Materials Co., Ltd. Address before: Guangdong Province, Shaoguan City, Ruyuan Yao Autonomous County Hou Gong Du Zhen Applicant before: Dongyangguang Industry Development Co., Ltd., Ruyuan Yao Nationality Autonomous |
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