CN101593595B - Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method - Google Patents
Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method Download PDFInfo
- Publication number
- CN101593595B CN101593595B CN2009100293745A CN200910029374A CN101593595B CN 101593595 B CN101593595 B CN 101593595B CN 2009100293745 A CN2009100293745 A CN 2009100293745A CN 200910029374 A CN200910029374 A CN 200910029374A CN 101593595 B CN101593595 B CN 101593595B
- Authority
- CN
- China
- Prior art keywords
- ferrite
- temperature
- ferrite material
- sintering
- low
- 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.)
- Expired - Fee Related
Links
Landscapes
- Soft Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
Abstract
The invention relates to a low-temperature sintering high performance MnZn power ferrite material, which comprises the following main components: 49.5 to 56.5mol percent of Fe2O3, 6.5 to 16 mol percent of ZnO and 29.5 to 41 mol percent of auxiliary element; the auxiliary element comprises calcium oxide, silicon dioxide and zinc metaborate, and the total addition amount is 0.01 to 0.25 weight percent of that of the main components. A manufacturing method comprises the following steps: putting the components into a sand mill pre-added with deionized water for grinding; controlling the average grain diameter to 0.5+/-0.1 mu m; after the first spraying and prilling, presintering the obtained mixture in an electrothermal rotary kiln at a temperature of 850+/-30 DEG C; putting the presintered materials into the sand mill for the second sand grind, and adding additives, namely the calcium oxide, the silicon dioxide and the zinc metaborate; performing the secondary spraying to obtain MnZn ferrite particle material powder; and molding and pressing the particle material into a blank and sintering the blank for 2 to 5 hours at a temperature of 1,150+/-50 DEG C.
Description
Technical field
The present invention relates to a kind of low-temperature sintering high performance MnZn low-consumption power Ferrite Material and manufacturing approach.
Background technology
Develop rapidly along with electronic market, the world; Ferrite Material is owing to have special electromagnetic performance; For example: resistivity is high, excellent in high-frequency characteristics etc., the various electronic devices and components of being processed by FERRITE CORE; Comprise the high frequency magnetic core electronic device; As: deflecting coil, kickback transformer, common transformer, resolver, anti-electromagnetic interference transformer, inductor and choke etc., these components and parts as the work and control core of system or equipment, are widely used in: in computer, mobile phone, communication, office automation, remote monitoring, audio-visual equipment, household electrical appliance, electromagnetic compatibility, green illumination and the electronic information technology (IT) usually.Soft magnetic ferrite has become hyundai electronics information industry, various communication industry, the consumer electronics industry, automotive electronics (as: electronic navigation, audiovisual and various control system, automobile charger and various DC-DC transducers etc.), a kind of irreplaceable basic function material of Aero-Space electronics and military applications field.Wherein,, can be used as microwave absorbing material, thereby make the search lighting fall short, for example: this soft magnetic ferrite of the just a large amount of uses of stealth fighter and bomber because soft magnetic ferrite has special electromagnetic performance under high frequency.In addition, a kind of New Type Radar, battle array control radar also uses the high-frequency soft magnetic ferrite in a large number mutually.
Along with modern electronic technology is developed by leaps and bounds; Particularly mobile communication, optical fiber communication, electromagnetic compatibility, computer, flat-panel monitor (LCD, PDP) in recent years; Fields such as DTV, automotive electronics, novel energy-conserving lighting, anti-electromagnetic interference application are fast-developing; When having opened up more big market for the application of soft magnetic ferrite, soft magnetic ferrite is also had higher requirement.
Need to prove that what consumption was maximum in all these fields is MnZn Ferrite Material and magnetic core, accounts for about 75% of all soft magnetic ferrite consumptions.And in MnZn Ferrite Material and the magnetic core, be main with MnZn power ferrite material and magnetic core especially, account for about 85%.
MnZn power ferrite magnetic core application market is very wide.According to statistics and the prediction of external expert to global soft magnetic ferrite production: nineteen ninety-five whole world total output be 210,000 tons; Reached 300,000 tons in 2000; Be increased to 450,000 tons to 2005, estimated 2010 and will reach 800,000 tons, wherein the MnZn power ferrite accounts for 60～70% of total amount.Statistics shows that each soft magnetic ferrite application increases the amplitude of its demand with every year 10～20%.
The output of China's soft magnetic ferrite also is increased to more than 350,000 tons in 2008 from 30,000 tons of nineteen ninety-five, has accounted for more than 50% of world's total amount.
But because the MnZn ferrite needs sintering at high temperature, sintering temperature is at 1330～1400 ℃ usually; Temperature retention time was at 4～8 hours; Sintering period reaches 26～36 hours, simultaneously also need be under the N2 gas shiled sintering, this just needs to consume a large amount of electric energy and N2 gas.Therefore, the MnZn ferrite belongs to the industry of high energy consumption.
The present invention passes through in the MnZn ferrite, to add an amount of zinc metaborate, thereby sintering temperature is descended significantly, can be at 1150 ℃ of left and right sides sintering, and temperature retention time only needs about 3 hours, has obtained the low-consumption power ferrite of function admirable.Compare with conventional iron oxysome manufacturing approach, sintering temperature reduces about 200 ℃, and neoteric method has been saved the energy greatly, thereby has reduced manufacturing cost significantly.
Summary of the invention
The object of the invention provides a kind of low-temperature sintering high performance low-power consumption MnZn power ferrite material manufacturing approach.The MnZn Ferrite Material can reach following index: initial permeability μ under the normal temperature
i≈ 2500, saturation induction density Bs>=530mT, at 100KHz, 200mT, power consumption is less than the low-consumption Mn-Zn power ferrite material of the function admirable of 300mW/cm3 under 100 ℃ of conditions.
Low-temperature sintering high performance low-power consumption MnZn power ferrite material, this ferritic principal component comprises iron oxide, zinc oxide and manganese oxide and auxiliary element, it is characterized in that: said principal component in the content of reference material separately is: Fe
2O
3: 49.5mol%～56.5mol%, ZnO:6.5mol%～16mol%, MnO:29.5mol%～41mol%; Said auxiliary element also comprises zinc metaborate except that required usually calcium oxide, silicon dioxide, it adds total amount is 0.01～0.25wt% of principal component total amount.
Add relevant auxiliary element the interpolation scope be: calcium oxide: 0.008～0.18wt%, silicon dioxide: 0.005～0.025wt%, zinc metaborate: 0.005～0.045wt%.
This material forms at 1150 ± 50 ℃ of left and right sides sintering, compares with the ferrite sintered temperature of traditional MnZn, reduces about 200 ℃, adopts this method to save the energy greatly, thereby has reduced manufacturing cost significantly.
Low-temperature sintering high performance MnZn power ferrite material manufacturing approach is characterized in that by following prescription: Fe
2O
3: 53.1mol%, ZnO:11.2mol%, (the raw material form is Mn to MnO:35.7mol%
3O
4) take by weighing raw material; Drop in the sand mill that is added with deionized water in advance and grind, control average grain diameter 0.5 ± 0.1 μ m, behind the mist projection granulating, electricity consumption heating revolving kiln carries out pre-burning under 850 ± 30 ℃ of temperature; Pre-burning material input sand mill carries out the secondary sand milling subsequently, and said relatively principal component content in the sand grinding process adds addition of C aO:0.045wt%, SiO
2: 0.008wt%, zinc metaborate: 0.005～0.045wt%; And adding pure water 30-55wt% in addition, the average grain diameter of control sand milling is 1.0 ± 0.2 μ m; Carry out the secondary spraying at last and obtain MnZn ferrite particle material powder; Get this particulate material moulding and be pressed into base and put into vacuum furnace, bell jar stove or N2 gas shiled pushed bat kiln, partial pressure of oxygen less than 3% balanced atmosphere in, at 1150 ± 50 ℃ of sintering temperature 2-5 hours; Certainly sintering time also can be longer, as grow to 5-10 hour.
Said ferrite prefiring material adds with auxiliary element and carries out sand milling in the sand mill that is added with deionized water in advance; Obtain the ferrite slurry that average grain diameter is 1.0 ± 0.2 μ m; Add 10% PVA solution (concentration is 10 ± 3%) subsequently and carry out spray drying granulation, obtain ferrite powder; It is 3.0 ± 0.2g/cm that ferrite powder is obtained density through the press compacting
3The ferrite blank, with blank in vacuum sintering furnace or bell jar stove or atmosphere protection pushed bat kiln, in partial pressure of oxygen is 0.5～4% balanced atmosphere, especially 1100～1180 ℃ of sintering temperatures 2～3 hours.
The present invention's idea that Ferrite Material mixes that at first breaks traditions; A large amount of in the past production is told us with the experiment practical experience; Obtain high performance MnZn power ferrite material, must reduce the content of boron oxide in the raw material as far as possible, also never with boron oxide as the additive that improves ferrite performance; Occur discontinuous grain growth in the ferrite because the adding of boron oxide often makes, thereby worsen electromagnetic performance.
Beneficial effect of the present invention is: through a large amount of experiments, found a kind of compound that can effectively reduce MnZn power ferrite material sintering temperature and can obviously improve the material electromagnetic performance, this compound is exactly a zinc metaborate.Through a large amount of technological experiments, grope to the addition of zinc metaborate and with the collocation of other additives.Draw a kind of low-temperature sintering high performance low-power consumption Mnn power ferrite material and manufacturing approach at last.
Embodiment
The present invention confirms the concrete content of each auxiliary element through following experiment:
At first, do not adding under other auxiliary element situation,, studying its influence MnZn power ferrite material microstructure and electromagnetic performance through changing the doping of zinc metaborate.The addition of zinc metaborate is between 0～1wt%, and experimental result shows that when addition was 0.5wt%, ferritic densification effect was best, but owing to discontinuous grain growth in ferrite, occurs, electromagnetic performance is relatively poor.Zinc metaborate promotes the mechanism of ferrite densification to be: in ferritic sintering process, the affiliation that adds of micro-zinc metaborate facilitates liquid-phase sintering, liquid-phase sintering to help improving reaction rate; Promote the carrying out of solid phase reaction; Improve the sintered density of material, reduce the crystal boundary and the intragranular porosity, improve the resistivity of material; The saturation induction density Bs of material is improved, and power consumption effectively reduces simultaneously.The zinc metaborate optimal addn of confirming in the present invention is that 0.005～0.045wt% is better, is best with 0.01～0.03wt% especially wherein.
In order to obtain best electromagnetic performance, studied zinc metaborate and other compounds, as: CaO, V
2O
5, Nb
2O
5, Bi
2O
3, CoO, ZrO
2, SiO
2In one or more compounds add in the ferrite as the combination additive, to the influence of ferrite electromagnetic performance, therefrom selected best of breed, and confirmed the addition scope of these additives.The content of these additives is respectively: calcium oxide: 0.008～0.18wt%, silicon dioxide: 0.005～0.025wt%, zinc metaborate: 0.005～0.045wt%.
Embodiment 1
By following prescription: Fe
2O
3: 53.1mol%, ZnO:11.2mol%, (the raw material form is Mn to MnO:35.7mol%
3O
4) take by weighing raw material; Drop in the sand mill that is added with deionized water in advance and grind, control average grain diameter 0.5 ± 0.1 μ m, behind the mist projection granulating, electricity consumption heating revolving kiln carries out pre-burning under 850 ± 30 ℃ of temperature.Pre-burning material input sand mill carries out the secondary sand milling subsequently, and said relatively principal component content in the sand grinding process adds pure water 45%, dispersant 0.008% and antifoaming agent 0.005%, and adds addition of C aO:0.045wt%, SiO
2: 0.008wt%, zinc metaborate: 0.025wt%.The average grain diameter of control sand milling is 1.0 ± 0.2 μ m.Carry out the secondary spraying at last and obtain MnZn ferrite particle material powder.Get this particulate material moulding compacting φ 25mm * φ 15mm * 7.5mm, density is approximately 3.0 ± 0.2g/cm
3Annulus, the ferrite blank is put into the bell jar stove, in partial pressure of oxygen is 1.5% balanced atmosphere, 1150 ℃ of sintering temperatures 3 hours.The SY8232B-H tester that adopts the logical company of Japanese rock to produce is measured the power consumption and the Bs of material, adopts the U.S. 4284LCR of Agilent company electric impedance analyzer to measure the magnetic permeability of material, and the product correlated performance is listed in the table 1.
Embodiment 2
By following prescription: Fe
2O
3: 53.1mol%, ZnO:11.2mol%, (the raw material form is Mn to MnO:35.7mol%
3O
4) take by weighing raw material; Drop in the sand mill that is added with deionized water in advance and grind, control average grain diameter 0.5 ± 0.1 μ m, behind the mist projection granulating, electricity consumption heating revolving kiln carries out pre-burning under 850 ± 30 ℃ of temperature.Pre-burning material input sand mill carries out the secondary sand milling subsequently, and said relatively principal component content in the sand grinding process adds pure water 45%, dispersant 0.008% and antifoaming agent 0.005%, and adds addition of C aO:0.045wt%, SiO
2: 0.008wt%, zinc metaborate: 0.03wt%.The average grain diameter of control sand milling is 1.0 ± 0.2 μ m.Carry out the secondary spraying at last and obtain MnZn ferrite particle material powder.Get this particulate material moulding compacting φ 25mm * φ 15mm * 7.5mm, density is approximately 3.0 ± 0.2g/cm
3Annulus, the ferrite blank is put into the bell jar stove, in partial pressure of oxygen is 1.5% balanced atmosphere, 1150 ℃ of sintering temperatures 3 hours.The SY8232B-H tester that adopts the logical company of Japanese rock to produce is measured the power consumption and the Bs of material, adopts the U.S. 4284LCR of Agilent company electric impedance analyzer to measure the magnetic permeability of material, and the product correlated performance is listed in the table 1.
Select for use the amount of calcium oxide very little to the ferrite product performance impact in the scope of amount at 0.005～0.025wt% of 0.008～0.18wt% and silicon dioxide.
Visible by table 1, ferrite product of the present invention has good electromagnetic performance.
Table 1
Claims (1)
1. low-temperature sintering MnZn power ferrite material, this Ferrite Material comprises principal component and auxiliary element, principal component comprises Fe
2O
3, ZnO and MnO, it is characterized in that: said principal component in the content of reference material separately is: Fe
2O
3: 49.5mol%～56.5mol%, ZnO:6.5mol%～16mol%, MnO:29.5mol%～41mol%; Said auxiliary element includes only: calcium oxide, silicon dioxide and zinc metaborate; It adds total amount is 0.01～0.25wt% of principal component total amount, wherein calcium oxide: 0.008～0.18 wt%, silicon dioxide: 0.005～0.025 wt%, zinc metaborate: 0.005～0.045 wt%; This Ferrite Material forms through 2-5 hour sintering under 1150 ± 50 ℃ of temperature, and the Ferrite Material performance of acquisition reaches following index: initial permeability μ under the normal temperature
i≈ 2500, saturation induction density Bs>=530mT, power consumption is less than 300mW/cm under 100KHz, 200mT, 100 ℃ of conditions
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100293745A CN101593595B (en) | 2009-04-10 | 2009-04-10 | Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100293745A CN101593595B (en) | 2009-04-10 | 2009-04-10 | Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101593595A CN101593595A (en) | 2009-12-02 |
| CN101593595B true CN101593595B (en) | 2012-08-22 |
Family
ID=41408193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100293745A Expired - Fee Related CN101593595B (en) | 2009-04-10 | 2009-04-10 | Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101593595B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010189247A (en) * | 2009-02-20 | 2010-09-02 | Jfe Chemical Corp | MnZnCo-BASED FERRITE |
| CN102531559B (en) * | 2010-12-22 | 2015-09-30 | 上海宝钢磁业有限公司 | A kind of manufacture method of high-performance manganese-zinc ferrite material powder |
| CN102390986B (en) * | 2011-08-09 | 2013-05-15 | 临沂中瑞电子有限公司 | Low-power-consumption MnZn ferrite material |
| CN102531561B (en) * | 2012-01-10 | 2014-03-19 | 深圳市华扬通信技术有限公司 | Yttrium iron garnet material for microwave ferrite and preparation method for yttrium iron garnet material |
| CN102531562B (en) * | 2012-01-14 | 2013-05-08 | 中北大学 | Method for preparing soft magnetic mesoporous nickel-zinc ferrite microspheres |
| CN103073276A (en) * | 2012-04-25 | 2013-05-01 | 江门杰富意磁性材有限公司 | Low loss Mn-Zn ferrite material for high frequency of more than 100 KHz |
| CN103771850B (en) * | 2014-01-14 | 2015-07-22 | 四川省德阳博益磁性材料有限公司 | Preparation process of uQ-MnZn soft-magnetic ferrite with ultralow value and high loss |
| CN104051107A (en) * | 2014-06-24 | 2014-09-17 | 铜陵三佳变压器有限责任公司 | Titanium-based ferrite core material used for transformer |
| CN104124025A (en) * | 2014-06-25 | 2014-10-29 | 蚌埠市英路光电有限公司 | Silicon-based rare earth ferromagnetic core material |
| CN105399411B (en) * | 2015-12-01 | 2019-01-25 | 横店集团东磁股份有限公司 | A kind of manganese-zinc ferrite low temperature sintering technology |
| CN105819847A (en) * | 2016-03-16 | 2016-08-03 | 横店集团东磁股份有限公司 | MnZn ferrite material with high Bs and high ui and preparation method thereof |
| CN106518041A (en) * | 2016-11-10 | 2017-03-22 | 佛山蓝途科技有限公司 | Mn-Zn ferrite magnetic material |
| CN107555981A (en) * | 2017-08-24 | 2018-01-09 | 成都圻坊生物科技有限公司 | A kind of low-temperature sintering MnZn Ferrite Materials and its prepare sintering method |
| CN109503144B (en) * | 2018-12-17 | 2021-07-20 | 安徽华林磁电科技有限公司 | Soft magnetic ferrite material for charging pile |
| CN110540431A (en) * | 2019-08-05 | 2019-12-06 | 无锡斯贝尔磁性材料有限公司 | sintering method of special low-loss, high-BS and wide-temperature MnZn soft magnetic ferrite green body for automobile electronics |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287985A (en) * | 1999-09-09 | 2001-03-21 | Tdk株式会社 | Magnetic ferrites materials |
-
2009
- 2009-04-10 CN CN2009100293745A patent/CN101593595B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287985A (en) * | 1999-09-09 | 2001-03-21 | Tdk株式会社 | Magnetic ferrites materials |
Non-Patent Citations (1)
| Title |
|---|
| P. Papazoglou.Low sintering temperature MnZn-ferrites for power applications in the frequency region of 400kHz.《Journal of magnetism and magnetic materials》.2006, * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101593595A (en) | 2009-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101593595B (en) | Low-temperature sintering high performance soft magnetic ferrite material and manufacturing method | |
| CN110156451B (en) | High-impedance lean-iron manganese-zinc ferrite material and preparation method thereof | |
| CN103058643B (en) | Mn-Zn soft magnetic ferrite material with high, temperature, high superposition and low power consumption, and preparation method of Mn-Zn soft magnetic ferrite material | |
| CN100533609C (en) | High-saturation-flux-density low-loss MnZn power ferrite and preparation method thereof | |
| CN105565790B (en) | YR950 wide-temperature high-direct-current superposition low-power-consumption manganese-zinc ferrite material and preparation method thereof | |
| CN102603279B (en) | High-strength high-Bs (saturation magnetic induction intensity) nickel-zinc ferrite and preparation method thereof | |
| CN102795850B (en) | Wide-temperature ultralow-loss manganese zinc power ferrite magnetic core | |
| CN103951411A (en) | Wide-temperature-range low-power-consumption high-Curie-temperature manganese/zinc ferrite material and preparation method thereof | |
| CN102231312B (en) | Low-total harmonic distortion (THD) wideband high-permeability MnZn ferrite material and manufacturing method thereof | |
| CN112979301B (en) | High-frequency high-temperature low-loss MnZn power ferrite material and preparation method thereof | |
| CN103626488B (en) | Microwave ceramic dielectric material and preparation method thereof | |
| CN101560091A (en) | Manganese-zinc ferrite material and preparation method thereof | |
| CN102751065B (en) | Broad temperature, broadband low-loss MnZn power ferrite material and preparation method thereof | |
| CN107352993A (en) | A kind of high frequency Mn-Zn soft magnetic ferrite and preparation method thereof | |
| CN101913851A (en) | Wide-temperature high-permeability Mn-Zn soft magnetic ferrite material and magnetic core prepared therefrom as well as preparation method thereof | |
| CN104030674A (en) | NiCuZn ferrite material and preparation method thereof | |
| CN102390987B (en) | Nickel-zinc ferrite with super-low power consumption and preparation method thereof | |
| CN100425570C (en) | Mn-Zn ferrite with wide temperature range and high magnetic conductivity and its prepn process | |
| CN110668806A (en) | Preparation method of soft magnetic ferrite for high frequency | |
| CN105884342A (en) | Preparation method for Bi-substituted LiZnTiMn gyromagnetic ferrite baseplate material | |
| CN109851346A (en) | A kind of high frequency Mn-Zn soft magnetic ferrite and its preparation method and application | |
| CN101183582A (en) | Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same | |
| CN102290185B (en) | Soft magnetic material with high saturation magnetic flux density, high transmission capability and high direct current superposition-resisting property and preparation method thereof | |
| CN109678486A (en) | A kind of wide warm low-temperature coefficient low-consumption Mn-Zn ferrite material | |
| CN109678483A (en) | The preparation method of wide temperature low-temperature coefficient low-consumption Mn-Zn ferrite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |