CN103964832A - MnZn ferrite material of low loss and high saturation magnetic flux density and preparation method of MnZn ferrite material - Google Patents
MnZn ferrite material of low loss and high saturation magnetic flux density and preparation method of MnZn ferrite material Download PDFInfo
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- CN103964832A CN103964832A CN201410168745.9A CN201410168745A CN103964832A CN 103964832 A CN103964832 A CN 103964832A CN 201410168745 A CN201410168745 A CN 201410168745A CN 103964832 A CN103964832 A CN 103964832A
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Abstract
The invention discloses a MnZn ferrite material of low loss and high saturation magnetic flux density and a preparation method of the MnZn ferrite material. The ferrite material is composed of major ingredients and accessory ingredients. The contents of the major ingredients calculated by oxides are as follows: 53 to 55 mol % of Fe2O3, 6 to 8 mol % of ZnO, 35 to 37 mol % of MnO and 1 to 4 mol % of NiO; the accessory ingredients calculated by the total weight of the major ingredients are as follows: 100 to 250 ppm of SiO2, 150 to 1,600 ppm of CaCO3, 50 to 500 ppm of Nb2O5, 50 to 300 ppm of ZrO2, 200 to 6,000 ppm of SnO2 and 500 to 2,000 ppm of Co2O3. The MnZn ferrite material and the preparation method thereof have the advantages that the design is reasonable, the low loss of magnetic cores and the improvement of saturation magnetic flux density can be realized by utilizing the conventional manufacturing equipment, and the dc superposition characteristic and energy storage property are favorable.
Description
Technical field
The invention belongs to soft magnetic ferrite field, be specifically related to a kind of MnZn Ferrite Material and preparation method thereof, relate in particular to a kind of low-loss high saturated flux density MnZn ferrite material and preparation method thereof.
Background technology
Be accompanied by the universal of Portable mobile electronic device, the high speed development of multimedia communication, digital network, and the demand in the field such as electromagnetic compatibility and anti-electromagnetic interference, proposed the more requirement of Gao Gengxin to power ferrite material at present.Along with the expansion of emerging Application Areas, power MnZn ferrite, except requiring low loss, is also required to have high saturation magnetic flux density.The preparation of low-loss high saturated flux density MnZn ferrite, except selecting suitable main formula design, suitable indium addition thing and combination thereof are also very important.
By selecting, main formula forms, additive designs and sintering processing improves the ferritic saturation magnetic flux density of MnZn for Chinese patent application (CN200810236002.5), (CN200810163736.5), (CN200610051942.8), (CN201110213879.4), (CN201110375322.0), (CN200610051943.2) etc., but the interpolation of NiO is not studied in great detail.And the inventor finds, the interpolation of NiO is more remarkable to improving saturation magnetic flux density.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of low-loss high saturated flux density MnZn ferrite material and preparation method thereof, the MnZn power ferrite obtaining through the method, its power consumption is reduced by a relatively large margin, and saturation magnetic flux density obtains raising by a relatively large margin.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of low-loss high saturated flux density MnZn ferrite material is provided, is made up of principal constituent and minor component, principal constituent and content are calculated as with oxide compound: Fe
2o
353～55mol%, ZnO 6～8mol%, MnO 35～37mol% and NiO 1～4mol%; By the minor component of principal constituent gross weight be: SiO
2100～250ppm, CaCO
3150～1600ppm, Nb
2o
550～500ppm, ZrO
250～300ppm, SnO
2200～6000ppm and Co
2o
3500～2000ppm.
In a preferred embodiment of the present invention, the content that calculates NiO taking oxide compound in described main composition is as 1.5～3.2mol%.
In a preferred embodiment of the present invention, the content that calculates NiO taking oxide compound in described main composition is as 2.2mol%.
Another object of the present invention is to provide a kind of preparation method of low-loss high saturated flux density MnZn ferrite material, it is characterized in that, described preparation method comprises the steps: successively
(1) take principal constituent raw material and carry out wet mixing;
(2) powder that step (1) obtains carries out pre-burning;
(3) in the Preburning material that step (2) obtains, add minor component raw material to carry out wet type sanded, obtain slip;
(4) slip that step (3) obtains adds binding agent to carry out mist projection granulating moulding;
(5) formed body that step (4) obtains carries out sintering under the scope of 1250～1350 DEG C.
In a preferred embodiment of the present invention, the sintering process described in described step (4) is to carry out at the environment of the mixed gas of oxygen and nitrogen, and wherein the scope of the holding-zone oxygen partial pressure in sintering process is: 6～10%.
The invention has the beneficial effects as follows: low-loss high saturated flux density MnZn ferrite material of the present invention and preparation method thereof, by limiting material principal constituent, the particularly consumption of main composition NiO of minor component composition, coordinate suitable sintering process, the FERRITE CORE providing has been provided, volume power consumption (Pcv) (test condition: 100kHz below 320kW/m3 at 100 DEG C, 200mT), saturation magnetic flux density (test condition: 1200A/m, 50Hz) more than 470mT.
Compared with prior art, low-loss high saturated flux density MnZn ferrite material of the present invention and preparation method thereof has the following advantages: reasonable in design, and can utilize existing production unit just can realize the raising of magnetic core low-loss and saturation magnetic flux density simultaneously.There is good DC superposition characteristic and energy storage characteristic.
Embodiment
Be below the specific embodiment of the present invention, technical characterictic of the present invention is described further, but the present invention is not limited to these embodiment.
Embodiment 1
By the Fe by 54.0mol%
2o
3, the ZnO of 6.0mol%, the starting material of the MnO of 36.0mol% and the NiO of 4.0mol% composition mix 1 hour in sand mill, then pre-burning 2 hours at 850 DEG C.Taking the powder quality after pre-burning as benchmark, in above-mentioned Preburning material, add ancillary component, the ancillary component of interpolation is: the SiO of 150ppm
2, the CaCO of 1000ppm
3, the Nb of 400ppm
2o
5, the SnO of 1000ppm
2, the ZrO of 200ppm
2and the Co of 800ppm
2o
3.Then carry out secondary sand milling 2 hours, carry out mist projection granulating after adding PVA, the standard toroidal core that is shaped to Φ 25 carries out sintering.At 1300 DEG C, be incubated 5 hours, oxygen partial pressure maintains 10%.
Test the loss of sample at 100kHz, 200mT, at 100 DEG C with CH2335 type loss test instrument, result is 315kW/m
3, test the Bs of sample at 50Hz, 1200A/m, at 100 DEG C with SY-8219 type B-H tester, result is 471mT.
Comparative example 1
Identical with embodiment 1, just the oxygen partial pressure of holding-zone is changed into 3%.At 100kHz/200mT, 100 DEG C, test the loss of sample with CH2335 type loss test instrument, result is 386kW/m
3, at 50Hz/1200A/m, 100 DEG C, test the Bs of sample with SY-8219 type B-H tester, result is 453mT.
Embodiment 2
By the Fe by 54.5mol%
2o
3, the ZnO of 6.5mol%, the starting material of the MnO of 36.2mol% and the NiO of 2.8mol% composition mix 1 hour in sand mill, then pre-burning 2 hours at 850 DEG C.Taking the powder quality after pre-burning as benchmark, in above-mentioned Preburning material, add ancillary component, the ancillary component of interpolation is: the SiO of 150ppm
2, the CaCO of 800ppm
3, the Nb of 300ppm
2o
5, the SnO of 800ppm
2, the ZrO of 300ppm
2and the Co of 700ppm
2o
3.Then carry out secondary sand milling 2 hours, carry out mist projection granulating after adding PVA, the standard toroidal core that is shaped to Φ 25 carries out sintering.At 1300 DEG C, be incubated 5 hours, oxygen partial pressure maintains 10%.
Test the loss of sample at 100kHz, 200mT, at 100 DEG C with CH2335 type loss test instrument, result is 298kW/m
3, test the Bs of sample at 50Hz, 1200A/m, at 100 DEG C with SY-8219 type B-H tester, result is 475mT.
Comparative example 2
Identical with embodiment 2, be the Fe that principal constituent is changed into 53.0mol%
2o
3, the ZnO of 6.0mol%, the MnO of 36.0mol% and the NiO of 5.0mol%.Test the loss of sample at 100kHz, 200mT, at 100 DEG C with CH2335 type loss test instrument, result is 423kW/m
3, test the Bs of sample at 50Hz, 1200A/m, at 100 DEG C with SY-8219 type B-H tester, result is 455mT.
Embodiment 3
By the Fe by 55mol%
2o
3, the ZnO of 6.3mol%, the starting material of the MnO of 36.5mol% and the NiO of 2.2mol% composition mix 1 hour in sand mill, then pre-burning 2 hours at 850 DEG C.Taking the powder quality after pre-burning as benchmark, in above-mentioned Preburning material, add ancillary component, the ancillary component of interpolation is: the SiO of 200ppm
2, the CaCO of 800ppm
3, the Nb of 250ppm
2o
5, the SnO of 800ppm
2, the ZrO of 200ppm
2and the Co of 900ppm
2o
3.Then carry out secondary sand milling 2 hours, carry out mist projection granulating after adding PVA, the standard toroidal core that is shaped to Φ 25 carries out sintering.At 1300 DEG C, be incubated 5 hours, oxygen partial pressure maintains 10%.
Test the loss of sample at 100kHz, 200mT, at 100 DEG C with CH2335 type loss test instrument, result is 281kW/m
3, test the Bs of sample at 50Hz, 1200A/m, at 100 DEG C with SY-8219 type B-H tester, result is 478mT.
Comparative example 3
Identical with embodiment 3, be the Fe that principal constituent is changed into 54.5mol%
2o
3, the ZnO of 8.0mol%, the MnO of 37.0mol% and the NiO of 0.5mol%.Test the loss of sample at 100kHz, 200mT, at 100 DEG C with CH2335 type loss test instrument, result is 456kW/m
3, test the Bs of sample at 50Hz, 1200A/m, at 100 DEG C with SY-8219 type B-H tester, result is 448mT.
Specific embodiment described in the present invention is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made a detailed description and has quoted as proof some specific exampless, to those skilled in the art, only otherwise it is obvious leaving that the spirit and scope of the present invention can make various changes or revise.
Claims (5)
1. a low-loss high saturated flux density MnZn ferrite material, is made up of principal constituent and minor component, it is characterized in that, principal constituent and content are calculated as with oxide compound: Fe
2o
353～55mol%, ZnO 6～8mol%, MnO 35～37mol% and NiO 1～4mol%; By the minor component of principal constituent gross weight be: SiO
2100～250ppm, CaCO
3150～1600ppm, Nb
2o
550～500ppm, ZrO
250～300ppm, SnO
2200～6000ppm and Co
2o
3500～2000ppm.
2. low-loss high saturated flux density MnZn ferrite material as claimed in claim 1, is characterized in that, the content that calculates NiO taking oxide compound in described main composition is as 1.5～3.2mol%.
3. low-loss high saturated flux density MnZn ferrite material as claimed in claim 2, is characterized in that, the content that calculates NiO taking oxide compound in described main composition is as 2.2mol%.
4. the preparation method of a kind of low-loss high saturated flux density MnZn ferrite material described in one of claim 1-3, is characterized in that, described preparation method comprises the steps: successively
(1) take principal constituent raw material and carry out wet mixing;
(2) powder that step (1) obtains carries out pre-burning;
(3) in the Preburning material that step (2) obtains, add minor component raw material to carry out wet type sanded, obtain slip;
(4) slip that step (3) obtains adds binding agent to carry out mist projection granulating moulding;
(5) formed body that step (4) obtains carries out sintering under the scope of 1250～1350 DEG C.
5. the preparation method of low-loss high saturated flux density MnZn ferrite material according to claim 4, it is characterized in that, sintering process described in described step (4) is to carry out at the environment of the mixed gas of oxygen and nitrogen, and wherein the scope of the holding-zone oxygen partial pressure in sintering process is: 6～10%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934181A (en) * | 2015-04-22 | 2015-09-23 | 横店集团东磁股份有限公司 | Soft-magnetic MnZn system power ferrite |
| CN107540360A (en) * | 2016-06-25 | 2018-01-05 | 临沂春光磁业有限公司 | It is a kind of that there is high saturated magnetic induction, high DC stacked Ferrite Material |
| CN109320230A (en) * | 2018-10-11 | 2019-02-12 | 南京中电熊猫磁电科技有限公司 | A kind of preparation method of the Mn-Zn soft magnetic ferrite with four high characteristics |
| CN114436636A (en) * | 2022-04-11 | 2022-05-06 | 天通控股股份有限公司 | High-permeability manganese-zinc ferrite material for differential and common mode inductors and preparation method thereof |
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| CN101183582A (en) * | 2006-12-29 | 2008-05-21 | 横店集团东磁股份有限公司 | Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same |
| CN101857427A (en) * | 2009-04-08 | 2010-10-13 | 广东江粉磁材股份有限公司 | High-frequency low-loss MnZn ferrite material and manufacturing method thereof |
| CN103482986A (en) * | 2013-09-13 | 2014-01-01 | 苏州天源磁业有限公司 | Low-loss MnZn ferrite material sintering method |
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2014
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Patent Citations (3)
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| CN101183582A (en) * | 2006-12-29 | 2008-05-21 | 横店集团东磁股份有限公司 | Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same |
| CN101857427A (en) * | 2009-04-08 | 2010-10-13 | 广东江粉磁材股份有限公司 | High-frequency low-loss MnZn ferrite material and manufacturing method thereof |
| CN103482986A (en) * | 2013-09-13 | 2014-01-01 | 苏州天源磁业有限公司 | Low-loss MnZn ferrite material sintering method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934181A (en) * | 2015-04-22 | 2015-09-23 | 横店集团东磁股份有限公司 | Soft-magnetic MnZn system power ferrite |
| CN104934181B (en) * | 2015-04-22 | 2017-09-22 | 横店集团东磁股份有限公司 | A kind of soft magnetism MnZn systems power ferrite |
| CN107540360A (en) * | 2016-06-25 | 2018-01-05 | 临沂春光磁业有限公司 | It is a kind of that there is high saturated magnetic induction, high DC stacked Ferrite Material |
| CN107540360B (en) * | 2016-06-25 | 2020-12-04 | 临沂春光磁业有限公司 | Ferrite material with high saturation magnetic induction intensity and high direct current superposition |
| CN109320230A (en) * | 2018-10-11 | 2019-02-12 | 南京中电熊猫磁电科技有限公司 | A kind of preparation method of the Mn-Zn soft magnetic ferrite with four high characteristics |
| CN109320230B (en) * | 2018-10-11 | 2021-10-19 | 南京中电熊猫磁电科技有限公司 | Preparation method of manganese-zinc soft magnetic ferrite material with four high characteristics |
| CN114436636A (en) * | 2022-04-11 | 2022-05-06 | 天通控股股份有限公司 | High-permeability manganese-zinc ferrite material for differential and common mode inductors and preparation method thereof |
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Address after: 215500 Jiangsu city of Suzhou province Changshou City Yushan high-tech industrial park four new road No. 18 Applicant after: Suzhou Tianyuan Magnetic materials Co., Ltd. Address before: 215500 Jiangsu city of Suzhou province Changshou City Yushan high-tech industrial park four new road No. 18 Applicant before: Suzhou Tianyuan Magnetic Industry Co., Ltd. |
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Application publication date: 20140806 |