CN103382109B - Nickel-zinc soft magnetic ferrite material and preparation method thereof - Google Patents
Nickel-zinc soft magnetic ferrite material and preparation method thereof Download PDFInfo
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- CN103382109B CN103382109B CN201310258822.5A CN201310258822A CN103382109B CN 103382109 B CN103382109 B CN 103382109B CN 201310258822 A CN201310258822 A CN 201310258822A CN 103382109 B CN103382109 B CN 103382109B
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Abstract
The invention provides a nickel-zinc soft magnetic ferrite material and a preparation method thereof. The invention is characterized in that main components of the nickel-zinc soft magnetic ferrite material comprise, by mol, 3.5 to 3.6 mol of ZrO2, 39 to 40.5 mol of Fe3O4, 9 to 9.5 mol of ZnO, 5 to 5.5 mol of MnO, 7.2 to 7.3 mol of CuO and 0.1 to 0.2 mol of GeO2, and modification impurities added in the main components comprise, in terms of the weight of the nickel-zinc soft magnetic ferrite material, 440 to 480 ppm of Al, 210 to 230 ppm of La2O3, 160 to 180 ppm of In, 280 to 290 ppm of As, 330 to 350 ppm of PbO2, 260 to 280 ppm of niobium carbide, 240 to 260 ppm of SiO2 and 450 to 480 ppm of V2O5. The nickel-zinc soft magnetic ferrite material provided by the invention has the characteristics of low power consumption, high magnetic permeability and a low temperature coefficient and meets demands of a high frequency circuit.
Description
Technical field
The present invention relates to technical field of magnetic materials, particularly, the present invention relates to a kind of Ni-Zn soft magnetic ferrite material and preparation method thereof.
Background technology
Magneticflux-density height ferromagnetic oxide powder, magnetic core realize being used as the products such as inducer, wave filter, pulse transformer in the electronicss such as program control communication, digital technique, network communication colour TV to make its miniaturization, the requisite electronic material of lightweight, improve constantly the magneticflux-density in magneticsubstance, be engaged in the engineering technical personnel of this specialty and the pursuit of production firm always, and the performance index of material, as all unsatisfactory in loss, frequency response characteristic, Curie temperature etc.
Summary of the invention
The object of this invention is to provide a kind of Ni-Zn soft magnetic ferrite material and preparation method thereof, the present invention
The technical solution adopted in the present invention is:
A kind of Ni-Zn soft magnetic ferrite material, it is characterized in that, principal constituent counts by molar and comprises: 3.5-3.6mol ZrO
2, 39-40.5mol Fe
3o
4, 9-9.5molZnO, 5-5.5molMnO, 7.2-7.3molCuO, 0.1-0.2mol GeO
2,the modification impurity added in principal constituent comprises according to the weighing scale accounting for described Ni-Zn soft magnetic ferrite material: 440-480ppm Al, 210-230ppm La
2o
3, 160-180ppm In, 280-290ppm As, 330-350ppm PbO
2, 260-280ppm niobium carbide, 240-260ppm SiO
2, 450-480ppm V
2o
5;
The preparation method of described Ni-Zn soft magnetic ferrite material, is characterized in that comprising the following steps:
(1) prepare burden: principal constituent is prepared burden, and adds modification impurity;
(2) once sintered: batching is blended in pre-burning 1-2 hour under the condition of 610 DEG C-640 DEG C, then pre-burning 2-3 hour under the condition being warming up to 920 DEG C-950 DEG C, obtain Preburning material;
(3) ball milling, pressed compact: Preburning material is put into sand mill, adds simultaneously and is equivalent to batching 0.6-1.0wt% polyvinyl alcohol, 1.0-1.2wt% disperse materials, appropriate amount of deionized water carry out sand milling 90-120 minute, obtain slurry, and dry; The powder of oven dry is added the polyvinyl alcohol of 1.2-1.8wt%, the stearic acid of 0.2-0.4wt%, granulation, load mould, make blank at 75-85Mpa pressure, naturally dry;
(4) double sintering: magnetic core blank is put into nitrogen atmosphere protection pushed bat kiln and sinter, in adjustment nitrogen atmosphere, oxygen level is 1.5%-1.6%, first rises to 660-690 DEG C with the temperature rise rate of 140-170 DEG C/h, sintering 1-2 hour; 820-840 DEG C is risen to again, sintering 2-3 hour with the temperature rise rate of 190-210 DEG C/h; 1370-1430 DEG C is risen to again, heat preservation sintering 3-4 hour with the temperature rise rate of 130-150 DEG C/h; Then lower the temperature, in adjustment nitrogen atmosphere, oxygen level is that 0.3%-0.5% is cooled to 780-820 DEG C with the rate of temperature fall of 180-190 DEG C/h, insulation 2-3 hour, then is cooled to room temperature with the rate of temperature fall of 220-260 DEG C/h;
Disperse materials described in step (3) is obtained by the raw material of following weight part: microcrystalline wax 3-4, Zinic stearas 2-3, aminopropyl triethoxysilane 0.5-0.8, SnO
20.3-0.5, Nano titanium dioxide 0.3-0.5, iron powder 1.2-1.5, glycerol glycerinate 2.3-2.5;
Preparation method is: by each mixing of materials, and grinding distribution evenly.
The present invention possesses the characteristic of reduce power consumption, high magnetic flux density, low-temperature coefficient, meets the demand of high frequency circuit.
Embodiment
A kind of Ni-Zn soft magnetic ferrite material, principal constituent counts by molar and comprises: 3.6mol ZrO
2, 40.5mol Fe
3o
4, 9.5molZnO, 5.5molMnO, 7.3molCuO, 0.2mol GeO
2,the modification impurity added in principal constituent comprises according to the weighing scale accounting for described Ni-Zn soft magnetic ferrite material: 480ppm Al, 230ppm La
2o
3, 180ppm In, 290ppm As, 350ppm PbO
2, 280ppm niobium carbide, 260ppm SiO
2, 480ppm V
2o
5;
The preparation method of Ni-Zn soft magnetic ferrite material, comprises the following steps:
(1) prepare burden: principal constituent is prepared burden, and adds modification impurity;
(2) once sintered: batching is blended in pre-burning 1-2 hour under the condition of 610 DEG C-640 DEG C, then pre-burning 2-3 hour under the condition being warming up to 920 DEG C-950 DEG C, obtain Preburning material;
(3) ball milling, pressed compact: Preburning material is put into sand mill, adds simultaneously and is equivalent to batching 0.6-1.0wt% polyvinyl alcohol, 1.0-1.2wt% disperse materials, appropriate amount of deionized water carry out sand milling 90-120 minute, obtain slurry, and dry; The powder of oven dry is added the stearic acid of the polyvinyl alcohol of 1.2-1.8wt%, 0. 2-0. 4wt%, granulation, load mould, make blank at 75-85Mpa pressure, naturally dry;
(4) double sintering: magnetic core blank is put into nitrogen atmosphere protection pushed bat kiln and sinter, in adjustment nitrogen atmosphere, oxygen level is 1.5%-1.6%, first rises to 660-690 DEG C with the temperature rise rate of 140-170 DEG C/h, sintering 1-2 hour; 820-840 DEG C is risen to again, sintering 2-3 hour with the temperature rise rate of 190-210 DEG C/h; 1370-1430 DEG C is risen to again, heat preservation sintering 3-4 hour with the temperature rise rate of 130-150 DEG C/h; Then lower the temperature, in adjustment nitrogen atmosphere, oxygen level is that 0.3%-0.5% is cooled to 780-820 DEG C with the rate of temperature fall of 180-190 DEG C/h, insulation 2-3 hour, then is cooled to room temperature with the rate of temperature fall of 220-260 DEG C/h;
Disperse materials described in step (3) is obtained by the raw material of following weight part (kilogram): microcrystalline wax 4, Zinic stearas 3, aminopropyl triethoxysilane 0.8, SnO
20.5, Nano titanium dioxide 0.5, iron powder 1.2, glycerol glycerinate 2.5;
Preparation method is: by each mixing of materials, and grinding distribution evenly.
The performance data of the magnetic ferrite magnetic core obtained by above-described embodiment:
| Sequence number | Technical indicator title | Technical indicator | Remarks |
| 1 | Initial permeability (25 ± 3 DEG C) | 9100±25% | |
| 2 | Power loss (100Kc, 200mT) unit: KW/m 3 | 583(25±2℃), 275(100±2℃) | |
| 3 | Saturation magnetic flux density mT(100 DEG C) | 490 | |
| 4 | Curie temperature DEG C | >255 |
Claims (1)
1. a zinc-copper soft magnetic ferrite, is characterized in that, principal constituent counts by molar and comprises: 3.5-3.6mol ZrO
2, 39-40.5mol Fe
3o
4, 9-9.5molZnO, 5-5.5molMnO, 7.2-7.3molCuO, 0.1-0.2mol GeO
2, the modification impurity added in principal constituent comprises according to the weighing scale accounting for described zinc-copper soft magnetic ferrite: 440-480ppm Al, 210-230ppm La
2o
3, 160-180ppm In, 280-290ppm As, 330-350ppm PbO
2, 260-280ppm niobium carbide, 240-260ppm SiO
2, 450-480ppm V
2o
5,
The preparation method of described zinc-copper soft magnetic ferrite, comprises the following steps:
(1) prepare burden: principal constituent is prepared burden, and adds modification impurity;
(2) once sintered: batching is blended in pre-burning 1-2 hour under the condition of 610 DEG C-640 DEG C, then pre-burning 2-3 hour under the condition being warming up to 920 DEG C-950 DEG C, obtain Preburning material;
(3) sand milling, pressed compact: Preburning material is put into sand mill, adds simultaneously and is equivalent to batching 0.6-1.0wt% polyvinyl alcohol, 1.0-1.2wt% disperse materials, appropriate amount of deionized water carry out sand milling 90-120 minute, obtain slurry, and dry; The powder of oven dry is added the polyvinyl alcohol of 1.2-1.8wt%, the stearic acid of 0.2-0.4wt%, granulation, load mould, make blank at 75-85MPa pressure, naturally dry;
(4) double sintering: magnetic core blank is put into nitrogen atmosphere protection pushed bat kiln and sinter, in adjustment nitrogen atmosphere, oxygen level is 1.5%-1.6%, first rises to 660-690 DEG C with the temperature rise rate of 140-170 DEG C/h, sintering 1-2 hour; 820-840 DEG C is risen to again, sintering 2-3 hour with the temperature rise rate of 190-210 DEG C/h; 1370-1430 DEG C is risen to again, heat preservation sintering 3-4 hour with the temperature rise rate of 130-150 DEG C/h; Then lower the temperature, in adjustment nitrogen atmosphere, oxygen level is that 0.3%-0.5% is cooled to 780-820 DEG C with the rate of temperature fall of 180-190 DEG C/h, insulation 2-3 hour, then is cooled to room temperature with the rate of temperature fall of 220-260 DEG C/h;
Disperse materials described in step (3) is obtained by the raw material of following weight part: microcrystalline wax 3-4, Zinic stearas 2-3, aminopropyl triethoxysilane 0.5-0.8, SnO
20.3-0.5, Nano titanium dioxide 0.3-0.5, iron powder 1.2-1.5, glycerol glycerinate 2.3-2.5;
Preparation method is: by each mixing of materials, and grinding distribution evenly.
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| CN201310258822.5A CN103382109B (en) | 2013-06-26 | 2013-06-26 | Nickel-zinc soft magnetic ferrite material and preparation method thereof |
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| CN201310258822.5A CN103382109B (en) | 2013-06-26 | 2013-06-26 | Nickel-zinc soft magnetic ferrite material and preparation method thereof |
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| CN103382109B true CN103382109B (en) | 2015-04-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134508A (en) * | 2014-08-05 | 2014-11-05 | 灵璧县灵磁新材料有限公司 | Chromium-based rare earth ferromagnetic core material |
| CN104900366A (en) * | 2015-04-24 | 2015-09-09 | 马鞍山科信咨询有限公司 | High-saturation magnetization soft magnetic ferrite and preparation method thereof |
| CN106336212A (en) * | 2016-08-28 | 2017-01-18 | 安徽华林磁电科技有限公司 | Ni-Zn soft magnetic ferrite used for transformer U-type part |
| CN106747484A (en) * | 2016-12-19 | 2017-05-31 | 绵阳市金开立磁电科技有限公司 | A kind of high temperature sintering methods of nickel zinc paster magnetic material |
| CN107032777A (en) * | 2017-04-01 | 2017-08-11 | 沅陵辰州磁电高科有限公司 | A kind of high magnetic permeability Ni-Zn soft magnetic ferrite material and preparation method thereof |
| CN107285758A (en) * | 2017-06-20 | 2017-10-24 | 合肥博之泰电子科技有限公司 | A kind of alloy magnetic material and its preparation technology |
| CN107564652A (en) * | 2017-09-15 | 2018-01-09 | 安徽信息工程学院 | A kind of inorganic composite materials IV for permanent-magnet material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294099A (en) * | 1999-10-12 | 2001-05-09 | Tdk株式会社 | Nickel-Mn-Zn Series ferrite |
| CN101811861A (en) * | 2010-03-31 | 2010-08-25 | 苏州天铭磁业有限公司 | Nano-crystalline MnZn ferrite material with high saturation induction density and high resistivity and preparation method thereof |
-
2013
- 2013-06-26 CN CN201310258822.5A patent/CN103382109B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294099A (en) * | 1999-10-12 | 2001-05-09 | Tdk株式会社 | Nickel-Mn-Zn Series ferrite |
| CN101811861A (en) * | 2010-03-31 | 2010-08-25 | 苏州天铭磁业有限公司 | Nano-crystalline MnZn ferrite material with high saturation induction density and high resistivity and preparation method thereof |
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