CN101552073A - MnZn ferrite material with high saturation magnetic flux density and low power consumption - Google Patents

MnZn ferrite material with high saturation magnetic flux density and low power consumption Download PDF

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Publication number
CN101552073A
CN101552073A CNA2008101637365A CN200810163736A CN101552073A CN 101552073 A CN101552073 A CN 101552073A CN A2008101637365 A CNA2008101637365 A CN A2008101637365A CN 200810163736 A CN200810163736 A CN 200810163736A CN 101552073 A CN101552073 A CN 101552073A
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mnzn ferrite
power consumption
ferrite material
flux density
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CN101552073B (en
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颜冲
吕东华
陈文洪
雷国莉
包大新
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Hengdian Group DMEGC Magnetics Co Ltd
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Hengdian Group DMEGC Magnetics Co Ltd
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Abstract

The utility model provides a MnZn ferrite material with high saturation magnetic flux density and low power consumption, which improves the saturation magnetic flux density (Bs) and keeps the power consumption at a low level simultaneously. The material is a spinel polycrystalline structure and comprises the main compositions (calculated by the content of oxide) of 53.5-54.8mol% of Fe2O3, 38.5-44.5mol% of MnO, and 1.5-7.5mol% of ZnO; furthermore, the material also comprises SiO2 and CaO that are taken as a first auxiliary composition, comprises Nb2O5, Ta2O5, V2O5, ZrO2 and HfO2, wherein one or two combinations are taken as a second auxiliary composition, also comprises TiO2 and SnO2, wherein one or two combinations are taken as a third auxiliary composition, and also comprises CoO which is taken as a fourth auxiliary composition.

Description

MnZn ferrite material with high saturation magnetic flux density and low power consumption
Technical field
The present invention relates to a kind of MnZn Ferrite Material and preparation method, relate in particular to MnZn ferrite material with high saturation magnetic flux density and low power consumption and preparation method.
Background technology
The MnZn ferrite can be used as soft magnetic material and is widely used in communication apparatus such as power transformer, choke and the household electrical appliance industry.When being used in 100kHz to power transformer magnetic core that hundreds of kHz frequency range is used, compare with metal soft magnetic material with other Ferrite Material, the ferritic power consumption of MnZn is little, and saturation flux density is bigger, so the MnZn ferrite is the important materials as the transformer magnetic core.
But along with the miniaturization of electronic equipment and power supply high-output powerization with in order also normally to use under hot conditions, the saturation flux density of common MnZn Ferrite Material (Bs), particularly high temperature Bs just seem not enough; So increasing people develops and develops the MnZn ferrite of high saturation magnetic flux density (Bs).
Chinese patent application (CN1294099A) discloses a kind of Ferrite Material, it has improved the ferritic Bs of MnZn by add NiO in material, but because the price comparison height of NiO has improved the manufacturing cost of MnZn Ferrite Material greatly, thereby has reduced competition capability.
And for example Chinese patent application (CN1627455A) discloses a kind of Ferrite Material, by Fe 2O 3, MnO, ZnO raw material form and be limited to certain limit, obtained a kind of high saturated flux density MnZn ferrite.But in this patent application not V 2O 5And HfO 2Improve any content of performance as additive.
Summary of the invention
The present invention is directed to prior art in the existing problem of preparation high saturation magnetic flux density and low power consumption MnZn ferrite, a kind of MnZn ferrite material with high saturation magnetic flux density and low power consumption is provided, when improving saturation flux density Bs, power consumption still maintains lower level.
The objective of the invention is to be implemented by the following technical programs:
MnZn ferrite material with high saturation magnetic flux density and low power consumption, this material are a kind of spinelle polycrystalline structures, form with the main composition of composition calculated by content of oxides to comprise:
Fe 2O 3Be 53.5～54.8mol%;
MnO is 38.5～44.5mol%;
ZnO is 1.5～7.5mol%.
Above-mentioned MnZn ferrite material with high saturation magnetic flux density and low power consumption, as preferably, this material also contains SiO 2With CaO as first auxiliary element, take main composition as the basis, SiO 2Content is 0.005wt%～0.02wt%, and CaO content is 0.01wt%～0.2wt%, and SiO 2With the percentage by weight of CaO be: 1: 2～10.
Above-mentioned MnZn ferrite material with high saturation magnetic flux density and low power consumption, as preferably, this material also contains Nb 2O 5, Ta 2O 5, V 2O 5, ZrO 2, HfO 2Wherein any one or two kinds of combinations are as second auxiliary element, take main composition as basis, Nb 2O 5Content is 0.005wt%～0.05wt%, Ta 2O 5Content is 0.005wt%～0.05wt%, V 2O 5Content is 0.005wt%～0.05wt%, ZrO 2Content is 0.005wt%～0.05wt%, HfO 2Content is 0.005wt%～0.05wt%.
Above-mentioned MnZn ferrite material with high saturation magnetic flux density and low power consumption, as preferably, this material also contains TiO 2, SnO 2One or both combinations wherein are as the 3rd auxiliary element, based on main composition, TiO 2Content is 0.005wt%～0.25wt%, SnO 2Content is 0.01wt%～0.5wt%.
Above-mentioned MnZn ferrite material with high saturation magnetic flux density and low power consumption, as preferably, this material also contains CoO as the 4th auxiliary element, take main composition as the basis, calculates content as 0.005wt%～0.4wt% take CoO.
Material of the present invention compared with prior art has the following advantages:
1, MnZn Ferrite Material of the present invention is not owing to add expensive NiO or Li in main composition 2O greatly reduces the manufacturing cost of MnZn Ferrite Material, thereby has improved the market competitiveness of product.
2, because the optimum organization that main composition and auxiliary element are carried out, use Ferrite Material of the present invention when improving the high temperature saturation flux density by a relatively large margin, the material power consumption still can maintain lower level, when this material is used to make the power transformer magnetic core, not only improve the energy conversion efficiency of transformer, dwindled the volume of transformer simultaneously.
Embodiment
Below be 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:
Will be by the Fe of 54.5mol% 2O 3, the Zn0 of 2mol%, the raw material that the MnO of 43.5mol% forms mixed in sand mill 1 hour, then 800 ℃ of lower pre-burnings 2 hours.With quality in the powder after the pre-burning is benchmark, adds auxiliary element in above-mentioned pre-imitation frosted glass, and the auxiliary element of interpolation (wt%) is: the SiO of 0.015wt% 2, the CaO of 0.08wt%, the V of 0.02wt% 2O 5, the HfO of 0.03wt% 2, the SnO of 0.1wt% 2, the CoO of 0.1wt% carried out the secondary sand milling 2 hours then, carried out mist projection granulating behind the adding PVA, and the standard toroidal core that is shaped to Φ 25 is carried out sintering.Be incubated 5 hours down at 1300 ℃, partial pressure of oxygen maintains 6%; Drop to 100 ℃ from 1300 ℃ at last, temperature-fall period is kept equilibrium oxygen partial pres-sure.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 455mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 330kW/m 3
Comparative example 1:
Identical with embodiment 1, be the Fe that main composition is changed into 54.7mol% 2O 3, the ZnO of 1mol%, the MnO of 43.5mol%.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 458mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 852kW/m 3
Embodiment 2:
Will be by the Fe of 53.5mol% 2O 3, the ZnO of 7.5mol%, the raw material that the MnO of 42mol% forms mixed in sand mill 1 hour, then 800 ℃ of lower pre-burnings 2 hours.With quality in the powder after the pre-burning is benchmark, adds auxiliary element in above-mentioned pre-imitation frosted glass, and the auxiliary element of interpolation (wt%) is: the SiO of 0.015wt% 2, the CaO of 0.08wt%, the V of 0.02wt% 2O 5, the HfO of 0.03wt% 2, the SnO of 0.1wt% 2, the CoO of 0.1wt% carried out the secondary sand milling 2 hours then, carried out mist projection granulating behind the adding PVA, and the standard toroidal core that is shaped to Φ 25 is carried out sintering.Be incubated 5 hours down at 1300 ℃, partial pressure of oxygen maintains 6%; Drop to 100 ℃ from 1300 ℃ at last, temperature-fall period is kept equilibrium oxygen partial pres-sure.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 448mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 280kW/m 3
Comparative example 2:
Identical with embodiment 2, be the Fe that main composition is changed into 53mol% 2O 3, the ZnO of 10mol%, the MnO of 37mol%.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 420mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 300kW/m 3
Embodiment 3:
Identical with embodiment 1, be the Fe that main composition is changed into 54mol% 2O 3, the ZnO of 7mol%, the MnO of 39mol%.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 448mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 300kW/m 3
Embodiment 4:
The auxiliary element (wt%) that adds is: the SiO of 0.015wt% 2, the CaO of 0.03wt%, all the other are with identical with embodiment 1.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 452mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 290kW/m 3
Embodiment 5:
The auxiliary element (wt%) that adds is: the SiO of 0.02wt% 2, the CaO of 0.2wt%, all the other are with identical with embodiment 1.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 451mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 300kW/m 3
Embodiment 6:
The auxiliary element (wt%) that adds is: the V of 0.05wt% 2O 5, the HfO of 0.05wt% 2, all the other are with identical with embodiment 1.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 453mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 275kW/m 3
Embodiment 7:
The auxiliary element (wt%) that adds is: the V of 0.05wt% 2O 5, all the other are with identical with embodiment 1.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 455mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 285kW/m 3
Embodiment 8:
The auxiliary element (wt%) that adds is: the HfO of 0.05wt% 2, all the other are with identical with embodiment 1.
With the Bs of SY-8258 type B-H tester in 50Hz, 1194A/m, 100 ℃ of lower specimen, the result is 450mT; The volume power consumption (Pcv) of specimen under 100kHz, 200mT, the result is 275kW/m 3
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.Those skilled in the art can make various modifications or replenish 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 instantiations, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.

Claims (8)

1, a kind of MnZn ferrite material with high saturation magnetic flux density and low power consumption is characterized in that: this material is a kind of spinelle polycrystalline structure, comprises with the main composition of composition calculated by content of oxides:
Fe 2O 3Be 53.5～54.8mol%;
MnO is 38.5～44.5mol%;
ZnO is 1.5～7.5mol%.
2, MnZn Ferrite Material according to claim 1, it is characterized in that: this material also contains SiO 2With CaO as first auxiliary element, based on main composition, SiO 2Content is 0.005wt%～0.02wt%, and CaO content is 0.01wt%～0.2wt%, and SiO 2With the percentage by weight of CaO be: 1: 2～10.
3, MnZn Ferrite Material according to claim 1 and 2, it is characterized in that: this material also contains Nb 2O 5, Ta 2O 5, V 2O 5, ZrO 2, HfO 2Wherein any one or two kinds of combinations are as second auxiliary element, take main composition as basis, Nb 2O 5Content is 0.005wt%～0.05wt%, Ta 2O 5Content is 0.005wt%～0.05wt%, V 2O 5Content is 0.005wt%～0.05wt%, ZrO 2Content is 0.005wt%～0.05wt%, HfO 2Content is 0.005wt%～0.05wt%.
4, MnZn Ferrite Material according to claim 3, it is characterized in that: this material also contains Nb 2O 5, Ta 2O 5, V 2O 5, ZrO 2, HfO 2Wherein any one or two kinds of combinations are as second auxiliary element, take main composition as basis, Nb 2O 5Content is 0.005wt%～0.05wt%, Ta 2O 5Content is 0.005wt%～0.05wt%, V 2O 5Content is 0.005wt%～0.05wt%, ZrO 2Content is 0.005wt%～0.05wt%, HfO 2Content is 0.005wt%～0.05wt%.
5, MnZn Ferrite Material according to claim 1 and 2, it is characterized in that: this material also contains TiO 2, SnO 2One or both combinations wherein are as the 3rd auxiliary element, based on main composition, TiO 2Content is 0.005wt%～0.25wt%, SnO 2Content is 0.01wt%～0.5wt%.
6, MnZn Ferrite Material according to claim 3, it is characterized in that: this material also contains TiO 2, SnO 2One or both combinations wherein are as the 3rd auxiliary element, based on main composition, TiO 2Content is 0.005wt%～0.25wt%, SnO 2Content is 0.01wt%～0.5wt%.
7, MnZn Ferrite Material according to claim 1 and 2 is characterized in that: this material also contains CoO as the 4th auxiliary element, and based on main composition, calculating content with CoO is 0.005wt%～0.4wt%.
8, MnZn Ferrite Material according to claim 3 is characterized in that: this material also contains CoO as the 4th auxiliary element, and based on main composition, calculating content with CoO is 0.005wt%～0.4wt%.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102976739A (en) * 2012-12-21 2013-03-20 南京工业大学 MnZn ferrite with ultralow high-frequency loss power and preparation method thereof
CN104591718A (en) * 2015-01-20 2015-05-06 苏州天源磁业有限公司 MnZn ferrite material with high saturation magnetic flux density and preparation method thereof
CN104803669A (en) * 2015-03-17 2015-07-29 江苏新旭磁电科技有限公司 Wide-temperature low-distortion Mn-Zn soft magnetic ferrite material and preparation method thereof
CN106486237A (en) * 2015-08-26 2017-03-08 Tdk株式会社 FERRITE CORE, electronic unit and supply unit
CN107200573A (en) * 2017-05-08 2017-09-26 中国计量大学 A kind of low magnetic permeability temperature coefficient MnZn ferrites
CN113292328A (en) * 2021-05-28 2021-08-24 苏州威斯东山电子技术有限公司 Manganese-zinc low-power-loss ferrite material for high-frequency application and preparation method thereof
CN113831119A (en) * 2021-09-30 2021-12-24 海宁辉恒磁业有限公司 Ultrahigh BsLow-loss manganese-zinc ferrite material and preparation method thereof
CN115536380A (en) * 2022-10-24 2022-12-30 安徽龙磁金属科技有限公司 Manganese zinc ferrite material with high saturation magnetic flux density and low loss for forward transformer

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CN1400192A (en) * 2002-08-23 2003-03-05 无锡晶石磁性电子器件有限公司 Mn-Zn ferrite
CN1677579B (en) * 2004-03-31 2012-10-10 广东肇庆微硕电子有限公司 Wide-band manganese-zinc series high-magnetic-conductivity soft magnet oxysome material
CN101266860B (en) * 2008-01-21 2011-03-09 横店集团东磁股份有限公司 High Bs low waste MnZn ferrite and its making method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102976739A (en) * 2012-12-21 2013-03-20 南京工业大学 MnZn ferrite with ultralow high-frequency loss power and preparation method thereof
CN102976739B (en) * 2012-12-21 2014-06-25 南京工业大学 MnZn ferrite with ultralow high-frequency loss power and preparation method thereof
CN104591718A (en) * 2015-01-20 2015-05-06 苏州天源磁业有限公司 MnZn ferrite material with high saturation magnetic flux density and preparation method thereof
CN104803669A (en) * 2015-03-17 2015-07-29 江苏新旭磁电科技有限公司 Wide-temperature low-distortion Mn-Zn soft magnetic ferrite material and preparation method thereof
CN104803669B (en) * 2015-03-17 2017-06-13 江苏新旭磁电科技有限公司 A kind of wide-temperature low-distortion mangan zinc soft magnetic ferrite and preparation method thereof
CN106486237A (en) * 2015-08-26 2017-03-08 Tdk株式会社 FERRITE CORE, electronic unit and supply unit
CN107200573A (en) * 2017-05-08 2017-09-26 中国计量大学 A kind of low magnetic permeability temperature coefficient MnZn ferrites
CN113292328A (en) * 2021-05-28 2021-08-24 苏州威斯东山电子技术有限公司 Manganese-zinc low-power-loss ferrite material for high-frequency application and preparation method thereof
CN113831119A (en) * 2021-09-30 2021-12-24 海宁辉恒磁业有限公司 Ultrahigh BsLow-loss manganese-zinc ferrite material and preparation method thereof
CN115536380A (en) * 2022-10-24 2022-12-30 安徽龙磁金属科技有限公司 Manganese zinc ferrite material with high saturation magnetic flux density and low loss for forward transformer

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