CN101183582A - Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same - Google Patents
Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same Download PDFInfo
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- CN101183582A CN101183582A CNA2006101555864A CN200610155586A CN101183582A CN 101183582 A CN101183582 A CN 101183582A CN A2006101555864 A CNA2006101555864 A CN A2006101555864A CN 200610155586 A CN200610155586 A CN 200610155586A CN 101183582 A CN101183582 A CN 101183582A
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Abstract
The invention relates to a Ni-Mn-Zn ferrite and the preparation method, in particular to a high saturation magnetic flux density low Ni-Mn-Zn power loss ferrite and the preparation method. The main technical proposal of the invention is: the ferrite comprises components with the following molar percentage: Fe2O3:53 to 55mol%, MnO:35 to 37mol%, ZnO:5 to 8mol%, NiO:2 to 4mol%. The invention has an advantage of providing a high saturation magnetic flux density low Ni-Mn-Zn power loss ferrite with reasonable design, high saturation magnetic flux density, high frequency and low power loss.
Description
Technical field
The present invention relates to a kind of nickel manganese-zinc ferrite and preparation method thereof, relate in particular to a kind of high saturation magnetic flux density low loss NiMnZn power ferrite and preparation method thereof.
Background technology
Be accompanied by popularizing of portable mobile electronic device, the high speed development of multimedia communication, digital network, and the demand in fields such as electromagnetic compatibility and anti-electromagnetic interference have proposed the more requirement of Gao Gengxin to power ferrite material at present.Switching Power Supply is that the requirement of depressor output choke magnetic core has very high saturation flux density, good dc superposition characteristic and low power loss, and automobile electrical source magnetic core is because the interior temperature height of enging cabin, the requirement magnetic core has the high Bs under the high temperature, expansion along with emerging application, power MnZn ferrite except requiring low loss, is also required to have high saturation flux density.High performance power MnZn ferrite, except that selecting anisotropy, magnetostriction is little and purity is high raw material for use, suitable trace element mixes and the control of technology is crucial.
As everyone knows, the loss of MnZn power ferrite is by magnetic hysteresis loss, eddy current loss and left in that loss forms.At 500kHz, under the 50mT condition, loss mainly is made up of magnetic hysteresis and two kinds of losses of eddy current, and it is less to left in the shared ratio of loss.
Summary of the invention
The present invention solves high saturation magnetic flux density under the existing in prior technology high-curie temperature, and high-frequency loss power is crossed high technical problem; Provide a kind of reasonable in design, high saturation magnetic flux density, high saturation magnetic flux density low loss NiMnZn power ferrite of high frequency low-power consumption and preparation method thereof.
The present invention has also solved the technical problem of dc superposition characteristic and energy storage characteristic aspect simultaneously, and a kind of high saturation magnetic flux density low loss NiMnZn power ferrite with good dc superposition characteristic and good energy storage characteristic and preparation method thereof is provided.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: high saturation magnetic flux density low loss NiMnZn power ferrite, this ferrite comprise following composition by mole percentage:
Fe
2O
3：53～55mol％，
MnO：35～37mol％，
ZnO：5～8mol％，
NiO：2～4mol％。
At above-mentioned high saturation magnetic flux density low loss NiMnZn power ferrite, this ferrite also contains two or more in the following auxiliary element by weight percentage:
CaCO
3：0.03～0.1wt％，
V
2O
5：0.005～0.04wt％，
TiO
2：0.005～0.07wt％，
Nb
2O
5：0.005～0.04wt％，
ZrO
2：0.005～0.05wt％，
Co
2O
3：0.05～0.2wt％。
The present invention also provides a kind of preparation method of high saturation magnetic flux density low loss NiMnZn power ferrite, and this method is made up of following steps:
(1) batching, batch mixing: adopting main component is Fe by the mole percentage by weight
2O
3: 53～55mol%MnO:35～37mol%, ZnO:2～4mol% carries out weighing, and the back of weighing adds deionized water or distilled water mixing fragmentation in batch mixer, and the granularity of mixed material is controlled at 0.6～1.5 μ m,
(2) mist projection granulating: through mist projection granulating, the moisture content of removing in the slip is prepared into particulate material with mixed slip;
(3) pre-burning: pre-burning: the mixed particulate material of above-mentioned process is carried out pre-burning, and calcined temperature is 750 ℃～980 ℃, and the pre-burning highest temperature retention time is 0.2～3 hour;
(4) pulverize: two or more in by weight percentage the auxiliary element below in above-mentioned pre-imitation frosted glass, adding: CaCO
3: 0.03～0.1wt%, V
2O
5: 0.005～0.04wt%, TiO
2: 0.005～0.07wt%, Nb
2O
5: 0.005～0.04wt%, ZrO
2: 0.005～0.05wt%, Co
2O
3: 0.05～0.2wt%, then powder is added and put into pulverizer behind deionized water or the distilled water and pulverize, be prepared into slip;
(5) mist projection granulating and moulding: the slip of above-mentioned pulverizing is carried out mist projection granulating in spray tower, mist projection granulating is made the particle that particle diameter is 50～500 μ m, is shaped to the blank with definite shape then;
(6) sintering: the blank after the above-mentioned moulding is carried out carrying out sintering under 1300 ℃～1380 ℃ scope, promptly form high saturation magnetic flux density low loss NiMnZn power ferrite behind the sintering.
In the preparation method of above-mentioned high saturation magnetic flux density low loss NiMnZn power ferrite, the particle mean size of solid suspension is 0.9～1.15 μ m in slip described in the step (4).
In the preparation method of above-mentioned high saturation magnetic flux density low loss NiMnZn power ferrite, in the sintering process described in the step (6) is that environment at the mist of oxygen and nitrogen carries out, and wherein the scope of the soaking zone partial pressure of oxygen in sintering process is: 0.5～2%.
In order to be reduced in the loss under this test condition.The inventor is by the discovery that studies for a long period of time: with TiO
2With CaCO
3Add by a certain percentage in the pre-imitation frosted glass as additive, can improve the resistivity of material, reduce eddy current loss; Add a certain amount of Co in the material
2O
3, the μ i under the magnetic core normal temperature is brought up to about 2000, the normal temperature power consumption improves, and normal temperature Br reduces simultaneously; Add a certain amount of V
2O
5The sintered density that improves product improves saturation flux density.Certainly the performance of only optimizing the MnZn power ferrite like this is not enough, also need to optimize the composition of material and adopt appropriate preparation method, and the inventor obtains a kind of high saturation magnetic flux density low loss NiMnZn power ferrite by above-mentioned material composition and preparation method.This high saturation magnetic flux density low loss NiMnZn power ferrite is at 500kHz, 50mT, and power consumption is smaller or equal to 150mW/cm under 100 ℃ the condition
3, at 1194A/m, under the condition of 50Hz, 100 ℃ saturation flux density is more than or equal to 460mT.So just be well positioned to meet device to the low-loss of MnZn power ferrite, the requirement of high Bs.
Therefore, the present invention has following advantage: reasonable in design, and high saturation magnetic flux density, the high frequency low-power consumption, have good dc superposition characteristic and good energy storage characteristic.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1:(1) batching, batch mixing: adopting main component is Fe by the mole percentage by weight
2O
3: 53～55mol%, MnO:35～37mol%, ZnO:2～4mol% carries out weighing, and the back of weighing adds deionized water mixing fragmentation in batch mixer, and the granularity of mixed material is controlled at 0.6～1.5 μ m; (2) mist projection granulating: through mist projection granulating, make slip reach certain water content mixed slip, be prepared into particulate material; (3) pre-burning: above-mentioned particle is carried out pre-burning, and calcined temperature is 750 ℃～980 ℃, and the pre-burning time is 0.2～3 hour; (4) pulverize: two or more in by weight percentage the auxiliary element below in above-mentioned pre-imitation frosted glass, adding: CaCO
3: 0.03～0.1wt%, V
2O
5: 0.005～0.04wt%, TiO
2: 0.005～0.07wt%, Nb
2O
5: 0.005～0.04wt%, ZrO
2: 0.005～0.05wt%, Co
2O
3: 0.05～0.2wt%, then powder is added and put into pulverizer behind the deionized water and pulverize, be prepared into slip, the particle mean size of solid suspension is 0.9～1.15 μ m in the slip; (5) mist projection granulating and moulding: above-mentioned slip is carried out mist projection granulating in spray tower, mist projection granulating is made the particle that particle diameter is 50～500 μ m; Be shaped to blank then with definite shape; (6) sintering: the blank after the above-mentioned moulding is carried out carrying out sintering under 1300 ℃～1380 ℃ scope, and sintering process is that the mixed-gas environment at oxygen and nitrogen carries out, and wherein the scope of the soaking zone partial pressure of oxygen in sintering process is: 0.5～2%; Promptly form high saturation magnetic flux density low loss NiMnZn power ferrite behind the sintering.
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes 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 detailed explanation and has quoted some instantiations as proof, 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 (6)
1. high saturation magnetic flux density low loss NiMnZn power ferrite is characterized in that this ferrite comprises following composition by mole percentage:
Fe
2O
3：53～55mol％，
MnO：35～37mol％，
ZnO：5～8mol％，
NiO：2～4mol％。
2. high saturation magnetic flux density low loss NiMnZn power ferrite according to claim 1, it is characterized in that described high saturation magnetic flux density low loss NiMnZn power ferrite also contains two or more in the following auxiliary element by weight percentage:
CaCO
3：0.03～0.1wt％，
V
2O
5：0.005～0.04wt％，
TiO
2：0.005～0.07wt％，
Nb
2O
5：0.005～0.04wt％，
ZrO
2：0.005～0.05wt％，
Co
2O
3：0.05～0.2wt％。
3. high saturation magnetic flux density low loss NiMnZn power ferrite according to claim 1 is characterized in that this ferrite at 500kHz, 50mT, and power consumption is smaller or equal to 150mW/cm under 100 ℃ the condition
3, at 1194A/m, under the condition of 50Hz, 100 ℃ saturation flux density is more than or equal to 460mT.
4. the preparation method of a high saturation magnetic flux density low loss NiMnZn power ferrite is characterized in that this method is made up of following steps:
(1) batching, batch mixing: adopting main component is Fe by the mole percentage by weight
2O
3: 53～55mol%, MnO:35～37mol%, ZnO:2～4mol%, NiO:2～4mol% carries out weighing, and the back of weighing adds deionized water in batch mixer or distilled water carries out the batch mixing fragmentation, and the granularity of mixed material is controlled at 0.6～1.5 μ m.
(2) mist projection granulating: through mist projection granulating, the moisture content of removing in the slip is prepared into particulate material with mixed slip;
(3) pre-burning: the particulate material that above-mentioned spraying is good is carried out pre-burning, and calcined temperature is 750 ℃～980 ℃, and pre-burning highest temperature time retention time is 0.2～3 hour;
(4) pulverize: two or more in by weight percentage the auxiliary element below in above-mentioned pre-imitation frosted glass, adding: CaCO
3: 0.03～0.1wt%, V
2O
5: 0.005～0.04wt%, TiO
2: 0.005～0.07wt%, Nb
2O
5: 0.005～0.04wt%, ZrO
2: 0.005～0.05wt%, Co
2O
3: 0.05～0.2wt%, then powder is added and put into pulverizer behind deionized water or the distilled water and pulverize, be prepared into slip;
(5) mist projection granulating and moulding: above-mentioned slip is carried out mist projection granulating in spray tower, mist projection granulating is made the particle that particle diameter is 50～500 μ m, is shaped to the blank with definite shape then;
(6) sintering: the blank after the above-mentioned moulding is carried out carrying out sintering under 1300 ℃～1380 ℃ scope.
5. the preparation method of high saturation magnetic flux density low loss NiMnZn power ferrite according to claim 4 is characterized in that, described in the described step (4) in the slip particle mean size of solid suspension be 0.9～1.15 μ m.
6. the preparation method of high saturation magnetic flux density low loss NiMnZn power ferrite according to claim 4, it is characterized in that, sintering process described in the described step (6) is that the environment at the mist of oxygen and nitrogen carries out, and wherein the scope of the soaking zone partial pressure of oxygen in sintering process is: 0.5～2%.
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| CNA2006101555864A CN101183582A (en) | 2006-12-29 | 2006-12-29 | Highly saturated magnetic flux density and low loss NiMnZn power ferrite and method for preparing the same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964832A (en) * | 2014-04-24 | 2014-08-06 | 苏州天源磁业有限公司 | MnZn ferrite material of low loss and high saturation magnetic flux density and preparation method of MnZn ferrite material |
| CN106348742A (en) * | 2016-08-25 | 2017-01-25 | 天长市中德电子有限公司 | Soft magnetic ferrite material with high magnetic conductivity and low temperature coefficient and preparation method thereof |
| CN106380190A (en) * | 2016-08-28 | 2017-02-08 | 安徽华林磁电科技有限公司 | Ni-Zn soft-magnetic ferrite material for transformer I-shaped workpiece |
| CN106380191A (en) * | 2016-08-28 | 2017-02-08 | 安徽华林磁电科技有限公司 | Ni-Zn soft magnetic ferrite material for transformer iron core |
| 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 |
| CN109851346A (en) * | 2018-12-29 | 2019-06-07 | 乳源东阳光磁性材料有限公司 | A kind of high frequency Mn-Zn soft magnetic ferrite and its preparation method and application |
| CN111233451A (en) * | 2018-11-28 | 2020-06-05 | 泰州茂翔电子器材有限公司 | High Bs, high frequency and low loss magnetic material |
| CN111362685A (en) * | 2020-02-19 | 2020-07-03 | 横店集团东磁股份有限公司 | Manganese-zinc ferrite with high negative temperature magnetic conductivity and low high temperature loss and preparation method thereof |
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2006
- 2006-12-29 CN CNA2006101555864A patent/CN101183582A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964832A (en) * | 2014-04-24 | 2014-08-06 | 苏州天源磁业有限公司 | MnZn ferrite material of low loss and high saturation magnetic flux density and preparation method of MnZn ferrite material |
| 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 |
| CN106348742A (en) * | 2016-08-25 | 2017-01-25 | 天长市中德电子有限公司 | Soft magnetic ferrite material with high magnetic conductivity and low temperature coefficient and preparation method thereof |
| CN106380190A (en) * | 2016-08-28 | 2017-02-08 | 安徽华林磁电科技有限公司 | Ni-Zn soft-magnetic ferrite material for transformer I-shaped workpiece |
| CN106380191A (en) * | 2016-08-28 | 2017-02-08 | 安徽华林磁电科技有限公司 | Ni-Zn soft magnetic ferrite material for transformer iron core |
| CN111233451A (en) * | 2018-11-28 | 2020-06-05 | 泰州茂翔电子器材有限公司 | High Bs, high frequency and low loss magnetic material |
| CN109851346A (en) * | 2018-12-29 | 2019-06-07 | 乳源东阳光磁性材料有限公司 | A kind of high frequency Mn-Zn soft magnetic ferrite and its preparation method and application |
| CN109851346B (en) * | 2018-12-29 | 2022-06-17 | 乳源东阳光磁性材料有限公司 | High-frequency manganese-zinc soft magnetic ferrite material and preparation method and application thereof |
| CN111362685A (en) * | 2020-02-19 | 2020-07-03 | 横店集团东磁股份有限公司 | Manganese-zinc ferrite with high negative temperature magnetic conductivity and low high temperature loss and preparation method thereof |
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