CN104891980A - Soft magnetic ferrite material suitable for power supply and preparation method thereof - Google Patents
Soft magnetic ferrite material suitable for power supply and preparation method thereof Download PDFInfo
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- CN104891980A CN104891980A CN201510199467.8A CN201510199467A CN104891980A CN 104891980 A CN104891980 A CN 104891980A CN 201510199467 A CN201510199467 A CN 201510199467A CN 104891980 A CN104891980 A CN 104891980A
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Abstract
The invention discloses a soft magnetic ferrite material suitable for a power supply and a preparation method thereof, the soft magnetic ferrite material is made from the following raw materials by weight: 50-70 parts of ferric oxide, 3-6 parts of copper oxide, 15-18 parts of manganese carbonate, 20-25 parts of zinc oxide, 0.3-0.6 part of bismuth oxide, 0.2-0.5 parts of aluminum nitride, 0.2-0.3 parts of selenium oxide 0.3-0.4 parts of carbonyl iron powder, 6-10 parts of chlorinated polyethylene, 0.4-1 part of carbon powder, 1-2 parts of sodium lignosulphonate, 6-9 parts of organic silicon resin and proper amount of deionized water; the prepared soft magnetic ferrite has high frequency low impedance, and low high temperature wear rate, and wide application in the power supply, is basically free of leakage inductance, and reduces the eddy current loss.
Description
Technical field
The present invention relates to soft magnetic ferrite field, be specifically related to a kind of soft magnetic ferrite be applicable on power supply and preparation method thereof.
Background technology
Soft magnetic ferrite, as a kind of important basic function material, is widely used in the electronic industries such as communication, sensing, audio and video equipment, transformer.Along with digital television, notebook computer universal, electronics is to light, thin, miniaturization, and this necessity of making use of momentum reduces power volume, proposes higher, stricter requirement to power supply.The soft magnetic ferrite of high-frequency high-power, as the material of power supply, can meet the high saturated magnetic intensity of power material, low-loss and stability.In prior art, current industry inner magnetic core is due to the limitation of product structure, and leakage inductance phenomenon is serious, and eddy-current loss is larger.
Summary of the invention
The object of this invention is to provide a kind of soft magnetic ferrite be applicable on power supply and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of soft magnetic ferrite be applicable on power supply and preparation method thereof, is made up of the raw material of following weight part: ferric oxide 50-70, cupric oxide 3-6, manganous carbonate 15-18, zinc oxide 20-25, bismuth oxide 0.3-0.6, aluminium nitride 0.2-0.5, selenium oxide 0.2-0.3, carbonyl iron dust 0.3-0.4, chlorinatedpolyethylene 6-10, carbon dust 0.4-1, sodium lignosulfonate 1-2, silicone resin 6-9, deionized water are appropriate;
A kind of soft magnetic ferrite be applicable on power supply of the present invention and preparation method thereof, be made up of following concrete steps:
(1) ferric oxide, manganous carbonate, zinc oxide, cupric oxide, carbon dust and deionized water are added in ball mill and carry out wet ball grinding and mix, Ball-milling Time is 6h;
(2) powder of step (1) gained is placed in sintering oven and carries out pre-burning at 800-1000 ° of C, burn-in time is 2-3h;
(3) powder of step (2) gained is added bismuth oxide, selenium oxide, carbonyl iron dust and aluminium nitride in mass ratio, and carry out second time ball milling, size controlling is at 1.5-3 micron;
(4) hexamethyldisiloxane of silicone resin with 3-6 times of weight part diluted, be added in silicone resin solution by the powder of step (3) gained, through mechanical stirring mixing, after the drying of box-type drying stove, it is even to add all the other remaining composition dispersed with stirring;
(5) powder step (4) obtained injects mould, uses heat pressing forming machines, is pressed into solid shape.
Advantage of the present invention is: the present invention adds carbon dust and carries out pre-burning, add the surfaceness of powder, increase the contact area with silicone resin, thus enhance the compactness of base substrate, planarization and insulativity, reduce loss, adopt hot-forming technique, simple to operate, convenient, reduce the waste of resource and meet the demand of conventional electromagnetism interference, the carbonyl iron dust added enhances additive and ferritic consistency, and improve the magnetic of material, the bismuth oxide added makes the size of crystal grain increase, reduce sintering temperature and void content, improve magnetic permeability, the aluminium nitride added reduces sintering temperature in sintering process, prevent the abnormal growth of crystal grain and improve resistance to sudden heating and the corrosion resistance nature of blank, the selenium oxide added has crystal grain thinning, promote that uniform crystal particles is fine and close, soft magnetic ferrite prepared by the present invention has low impedance at high frequency, high temperature wear rate is low, applied range on power supply, and can substantially accomplish there is no leakage inductance, decrease eddy-current loss.
Embodiment
Below by specific examples, the present invention is described in detail.
A kind of soft magnetic ferrite be applicable on power supply and preparation method thereof, is made up of the raw material of following weight part (kilogram): ferric oxide 56, cupric oxide 5, manganous carbonate 17, zinc oxide 23, bismuth oxide 0.4, aluminium nitride 0.3, selenium oxide 0.3, carbonyl iron dust 0.3, chlorinatedpolyethylene 10, carbon dust 0.9, sodium lignosulfonate 1, silicone resin 9, deionized water are appropriate;
A kind of soft magnetic ferrite be applicable on power supply of the present invention and preparation method thereof, be made up of following concrete steps:
(1) ferric oxide, manganous carbonate, zinc oxide, cupric oxide, carbon dust and deionized water are added in ball mill and carry out wet ball grinding and mix, Ball-milling Time is 6h;
(2) powder of step (1) gained is placed in sintering oven and carries out pre-burning at 1000 ° of C, burn-in time is 3h;
(3) powder of step (2) gained is added bismuth oxide, selenium oxide, carbonyl iron dust and aluminium nitride in mass ratio, and carry out second time ball milling, size controlling is at 2 microns;
(4) hexamethyldisiloxane of silicone resin with 5 times of weight parts diluted, be added in silicone resin solution by the powder of step (3) gained, through mechanical stirring mixing, after the drying of box-type drying stove, it is even to add all the other remaining composition dispersed with stirring;
(5) powder step (4) obtained injects mould, uses heat pressing forming machines, is pressed into solid shape.
The performance data of the soft magnetic ferrite obtained by above-described embodiment:
Initial permeability (25 ± 3 ° of C): 6534 ± 25%;
Power loss (100Kc, 200mT, KW/m3): 565(25 ± 2 ° C), 243(100 ± 2 ° C);
Saturation magnetic flux density (mT, 100 ° of C): 453;
Curie temperature (° C) > 243.
Claims (2)
1. one kind is applicable to soft magnetic ferrite on power supply and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: ferric oxide 50-70, cupric oxide 3-6, manganous carbonate 15-18, zinc oxide 20-25, bismuth oxide 0.3-0.6, aluminium nitride 0.2-0.5, selenium oxide 0.2-0.3, carbonyl iron dust 0.3-0.4, chlorinatedpolyethylene 6-10, carbon dust 0.4-1, sodium lignosulfonate 1-2, silicone resin 6-9, deionized water are appropriate.
2. a kind of soft magnetic ferrite be applicable on power supply and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:
(1) ferric oxide, manganous carbonate, zinc oxide, cupric oxide, carbon dust and deionized water are added in ball mill and carry out wet ball grinding and mix, Ball-milling Time is 6h;
(2) powder of step (1) gained is placed in sintering oven and carries out pre-burning at 800-1000 ° of C, burn-in time is 2-3h;
(3) powder of step (2) gained is added bismuth oxide, selenium oxide, carbonyl iron dust and aluminium nitride in mass ratio, and carry out second time ball milling, size controlling is at 1.5-3 micron;
(4) hexamethyldisiloxane of silicone resin with 3-6 times of weight part diluted, be added in silicone resin solution by the powder of step (3) gained, through mechanical stirring mixing, after the drying of box-type drying stove, it is even to add all the other remaining composition dispersed with stirring;
(5) powder step (4) obtained injects mould, uses heat pressing forming machines, is pressed into solid shape.
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| CN201510199467.8A CN104891980A (en) | 2015-04-24 | 2015-04-24 | Soft magnetic ferrite material suitable for power supply and preparation method thereof |
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Cited By (2)
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| CN105330280A (en) * | 2015-11-27 | 2016-02-17 | 全椒君鸿软磁材料有限公司 | Preparation method of high-impedance soft magnetic ferrite core material |
| CN105761868A (en) * | 2016-04-13 | 2016-07-13 | 天长市天豪制冷设备厂 | Multifunctional high-frequency tin-ferrite magnetic core material |
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| CN105761868A (en) * | 2016-04-13 | 2016-07-13 | 天长市天豪制冷设备厂 | Multifunctional high-frequency tin-ferrite magnetic core material |
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Application publication date: 20150909 |