CN116283263A - MnZn ferrite material and preparation method thereof - Google Patents
MnZn ferrite material and preparation method thereof Download PDFInfo
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- CN116283263A CN116283263A CN202310397629.3A CN202310397629A CN116283263A CN 116283263 A CN116283263 A CN 116283263A CN 202310397629 A CN202310397629 A CN 202310397629A CN 116283263 A CN116283263 A CN 116283263A
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- 239000000463 material Substances 0.000 title claims abstract description 95
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000005245 sintering Methods 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 26
- 230000009467 reduction Effects 0.000 claims abstract description 18
- 239000008187 granular material Substances 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims description 66
- 239000002994 raw material Substances 0.000 claims description 43
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 37
- 229910052760 oxygen Inorganic materials 0.000 claims description 37
- 239000001301 oxygen Substances 0.000 claims description 37
- 238000000498 ball milling Methods 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 17
- 238000004134 energy conservation Methods 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 14
- 238000003801 milling Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 8
- 238000005469 granulation Methods 0.000 description 7
- 230000003179 granulation Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
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- C04B35/62605—Treating the starting powders individually or as mixtures
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- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
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Abstract
The invention provides a MnZn ferrite material and a preparation method thereof, and relates to the technical field of ferrite materials. The power loss of the MnZn ferrite material provided by the invention is obviously lower than that of the conventional magnetic core in the current market, so that the energy lost in the working process of the transformer is reduced, the working conversion efficiency is improved, and the purposes of energy conservation and emission reduction are achieved. The high-performance power ferrite material is prepared by adopting the superfine grinding process, the prepared particle material is fine in granularity, uniform in distribution and good in grinding consistency; the granules are adopted to press blanks, and the MnZn ferrite material obtained by sintering has very low power consumption and better performance.
Description
Technical Field
The invention relates to the technical field of ferrite materials, in particular to a MnZn ferrite material and a preparation method thereof.
Background
In recent years, along with the exacerbation of global energy crisis, energy conservation and emission reduction become global consensus. A switching power supply is an electronic device which is indispensable for all electronic equipment and electric appliances to work normally, and can convert other forms of energy into electric energy and supply the electric energy to a circuit (electronic equipment), and in this conversion process, the switching power supply also consumes part of the electric energy and generates heat. This partial loss must be minimized for emission reduction purposes.
As a core device of the switching power supply, the transformer is a main component generating electric energy loss in the working process of the switching power supply, and the loss is divided into two parts: copper losses from the winding coil and iron losses from the ferrite core. The MnZn ferrite material is taken as a basic material of the electronic industry and is the most widely used magnetic material of the switching power supply at present. In order to minimize the amount of heat generated during operation of the power supply, the heat loss of the ferrite core within the transformer must be minimized. It is therefore necessary to develop a power ferrite material with ultra-low power consumption.
Disclosure of Invention
The invention aims to provide a MnZn ferrite material and a preparation method thereof, and the power loss of the MnZn ferrite material is obviously lower than that of a conventional magnetic core on the market at present, so that the energy lost in the working process of a transformer is reduced, the working conversion efficiency is improved, and the purposes of energy conservation and emission reduction are achieved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a MnZn ferrite material, which is prepared from main raw materials and auxiliary raw materials; the main raw materials comprise, based on 100% of the total molar quantity of the main raw materials: fe (Fe) 2 O 3 55 to 58mol percent, 6 to 8mol percent of ZnO, 0.5 to 1.5mol percent of NiO and 0 to 0.5mol percent of CuO, which are mixed togetherThe balance of Mn 3 O 4 ；
The auxiliary raw materials comprise, based on 100% of the total weight of the main raw materials: caCO (CaCO) 3 0.01～0.08wt％，Nb 2 O 5 0.02～0.05wt％，TiO 2 0.05～0.2wt％，BaO 0.01～0.06wt％，Ta 2 O 5 0.01～0.1wt％，HfO 2 0.01～0.06wt％。
The invention provides a preparation method of the MnZn ferrite material, which comprises the following steps:
performing first sand grinding on the main raw material to obtain a first sand grinding material;
presintering the sand grinding material to obtain presintering material;
performing second sand grinding on the presintered material to obtain a second sand grinding material;
mixing the second sand abrasive, auxiliary raw materials and a binder, and performing ball milling to obtain a ball abrasive;
granulating the ball milling material to obtain granule materials;
pressing the granular material to obtain a blank;
and sintering the blank to obtain the MnZn ferrite material.
Preferably, the first sanding is wet sanding.
Preferably, the presintering temperature is 850-1000 ℃, and the heat preservation time is 30-120 min; the presintering atmosphere is an air atmosphere.
Preferably, the second sanding is wet sanding.
Preferably, the adhesive is polyvinyl alcohol glue.
Preferably, the rotation speed of the ball milling is 200-360 r/min; the ball milling time is 60-120 min.
Preferably, the granulation is spray granulation.
Preferably, the sintering conditions include: heating to 400-450 ℃ at a heating rate of 1-2 ℃/min; then heating to 700 ℃ at a heating rate of 0.5-1 ℃/min; then heating to 1150 ℃ at a heating rate of 2-3 ℃/min; then heating to 1250-1350 ℃ at a heating rate of 2.5-4 ℃/min, and preserving heat for 3.5-5.5 h;
in the process from room temperature to 700 ℃, the sintering atmosphere is air atmosphere; the oxygen volume content is 5-10% at 700-1000 ℃; the oxygen volume content is 3-5% at 1000-1100 ℃; the oxygen volume content is 2-4% at 1100-1150 ℃; the oxygen volume content is 1-3% at 1150-1250 ℃; the oxygen volume content is 1-5% at 1250-1350 ℃.
Preferably, the sintering process further comprises cooling; the cooling conditions comprise: the cooling speed of 1350-1250 ℃ is 2-5 ℃/min, and the oxygen volume content is 2-5%; the temperature reduction speed at 1250-1150 ℃ is 2-4 ℃/min, and the oxygen volume content is 1-2%; the temperature reduction speed of 1150-1050 ℃ is 1-3 ℃/min, and the oxygen volume content is 0.5-1.5%; the cooling speed of 1050-1000 ℃ is 1-2 ℃/min, and the oxygen volume content is 0.01-0.05%; naturally cooling below 1000deg.C, and oxygen volume content below 0.01%.
The MnZn ferrite material provided by the invention has obviously lower power loss than the power ferrite material of the conventional magnetic core in the market at present, so that the energy lost in the working process of the transformer is reduced, the working conversion efficiency is improved, and the purposes of energy conservation and emission reduction are achieved.
The invention provides a preparation method of the MnZn ferrite material, which comprises the following steps: performing first sand grinding on the main raw material to obtain a first sand grinding material; presintering the sand grinding material to obtain presintering material; performing second sand grinding on the presintered material to obtain a second sand grinding material; mixing the second sand abrasive, auxiliary raw materials and a binder, and performing ball milling to obtain a ball abrasive; granulating the ball milling material to obtain granule materials; pressing the granular material to obtain a blank; and sintering the blank to obtain the MnZn ferrite material. The invention adopts the first sand grinding to uniformly mix the main raw materials, and carries out the second sand grinding after presintering, and finally carries out ball milling. The ferrite ball abrasive obtained by the two sand milling and ball milling processes has finer particle size, concentrated distribution and average particle size of 0.5-1.0 mu m, wherein the mass ratio of 0.05-1.5 mu m particles exceeds 80wt% and the largest particlesParticle size of less than 5 μm, specific surface area (BET) of 12m 2 And/g. The ball milling material prepared by the process has high activity and good sintering adaptability. The example results show that the sample ring with the outer diameter of 25mm, the inner diameter of 15mm and the height of 10mm prepared by sintering has the initial magnetic permeability higher than 2400, f=100 kHz and Bm=200 mT under the test condition, and the power loss at 100 ℃ is 260-270 kW/m 3 The curie temperature is higher than 230 ℃. The MnZn ferrite magnetic core provided by the invention is used as a charging power supply of a transformer, the conversion efficiency reaches more than 98%, and the effects of energy conservation and emission reduction are achieved.
The high-performance power ferrite material is prepared by adopting the superfine grinding process, the prepared particle material is fine in granularity, uniform in distribution and good in grinding consistency; the granules are adopted to press blanks, and the MnZn ferrite material obtained by sintering has very low power consumption and better performance. The MnZn ferrite material prepared by the invention is applied to a transformer, can effectively improve the working efficiency of the transformer, reduces the heating loss and realizes the purposes of energy conservation and emission reduction.
Detailed Description
The invention provides a MnZn ferrite material, which is prepared from main raw materials and auxiliary raw materials; the main raw materials comprise, based on 100% of the total molar quantity of the main raw materials: fe (Fe) 2 O 3 55 to 58mol percent, 6 to 8mol percent of ZnO, 0.5 to 1.5mol percent of NiO, 0 to 0.5mol percent of CuO and the balance of Mn 3 O 4 ；
The auxiliary raw materials comprise, based on 100% of the total weight of the main raw materials: caCO (CaCO) 3 0.01～0.08wt％，Nb 2 O 5 0.02～0.05wt％，TiO 2 0.05～0.2wt％，BaO 0.01～0.06wt％，Ta 2 O 5 0.01～0.1wt％，HfO 2 0.01～0.06wt％。
The preparation raw materials of the MnZn ferrite material provided by the invention comprise main raw materials. In the present invention, the main raw materials preferably include, based on 100% of the total molar amount of the main raw materials: fe (Fe) 2 O 3 55mol%, znO 8mol%, niO 1mol%, cuO0.1mol%, and Mn for the rest 3 O 4 。
The MnZn ferrite provided by the inventionThe preparation raw materials of the bulk material comprise auxiliary raw materials. In the present invention, the auxiliary raw materials preferably include, based on 100% of the total weight of the main raw materials: caCO (CaCO) 3 0.05wt％，Nb 2 O 5 0.04wt％，TiO 2 0.05wt％，BaO 0.01wt％，Ta 2 O 5 0.03wt％，HfO 2 0.01wt％。
The invention provides a preparation method of the MnZn ferrite material, which comprises the following steps:
performing first sand grinding on the main raw material to obtain a first sand grinding material;
presintering the sand grinding material to obtain presintering material;
performing second sand grinding on the presintered material to obtain a second sand grinding material;
mixing the second sand abrasive, auxiliary raw materials and a binder, and performing ball milling to obtain a ball abrasive;
granulating the ball milling material to obtain granule materials;
pressing the granular material to obtain a blank;
and sintering the blank to obtain the MnZn ferrite material.
The invention carries out first sand grinding on the main raw material to obtain a first sand grinding material. In the present invention, the first sand mill is preferably wet sand mill. In the present invention, the first sanding is preferably performed in a basket sander. In the present invention, the first sanding preferably includes: and adding water into the main raw materials, and performing first sand grinding. In the present invention, the mass of the water is preferably 50% by weight of the main raw material. In the invention, the time of the first sand grinding is preferably 30-60 min; the rotational speed of the first sanding is preferably 40-100 r/min, more preferably 60r/min. In the present invention, the first sanded medium is preferably steel alloy balls; the diameter of the alloy steel ball is preferably 3-10 mm, more preferably 5mm; the ball ratio is preferably 1:5. In the present invention, the ball ratio refers to the mass ratio of the material to the grinding medium.
The present invention preferably dries the resulting powder after the first sanding to obtain a first abrasive grit material. In the present invention, the drying temperature is preferably 150 to 200 ℃; the drying time is preferably 60 to 120min, more preferably 80min.
After the first sand abrasive is obtained, the sand abrasive is presintered to obtain a presintered material. In the present invention, the temperature of the pre-firing is preferably 850 to 1000 ℃, more preferably 900 ℃; the heat preservation time is preferably 30-120 min, more preferably 90min; the pre-firing atmosphere is preferably an air atmosphere. Preferably, after the presintering, the material is placed in air to be cooled to room temperature, so as to obtain the presintering material.
After the pre-sintered material is obtained, the pre-sintered material is subjected to second sand grinding to obtain a second sand grinding material. In the present invention, the second sand mill is preferably wet sand mill. In the present invention, the second sanding is preferably performed in a basket sander. In the present invention, the second sanding preferably includes: and adding water into the presintered material, and performing second sanding. In the present invention, the mass of the water is preferably 50 to 80wt% of the pre-firing material. In the invention, the time of the second sand grinding is preferably 60-120 min; the rotation speed of the second sand grinding is preferably 40-100 r/min. In the present invention, the second sanded medium is preferably steel alloy balls; the diameter of the alloy steel ball is preferably 1-5 mm; the ball ratio is preferably 1:5.
In the present invention, the second abrasive is a slurry.
After the second sand abrasive is obtained, the second sand abrasive, auxiliary raw materials and a binding agent are mixed and ball-milled to obtain the ball abrasive. In the present invention, the binder is preferably polyvinyl alcohol (PVA). In the present invention, the mass of the binder is preferably 0.005 to 0.1% of the total mass of the second abrasive.
In the present invention, the ball milling is preferably performed in a planetary ball mill. In the invention, the rotating speed of the ball milling is preferably 200-360 r/min, more preferably 300r/min; the time of the ball milling is preferably 60 to 120min, more preferably 80min. In the invention, the ball milling medium is preferably a round alloy steel ball; the diameter of the round alloy steel ball is preferably 1-3 mm; the ball ratio is preferably 1:5.
At present, when the power manganese zinc ferrite material is prepared, a basket type sand mill is generally adopted for sand milling, alloy steel balls are used as grinding media, a stirring rod driven by a motor is used for driving the alloy steel balls to move, and the alloy steel balls collide and squeeze each other in a ball milling tank, so that the particles are ground. In the grinding process, ferrite particles are layered due to gravity, the upper layer of particles are less, and the lower layer of particles are more; and the rotation linear speeds of the alloy steel balls at the center and the periphery of the ball milling tank are different, so that the sand milling effect of the basket type sand mill is poor, the abrasive particles are unevenly distributed, the number of the coarse particles is large, the number of the fine particles is small, and the power consumption of the power ferrite material prepared by the equipment is generally higher. The invention adopts a secondary sand milling and ball milling process to prepare the power ferrite material, firstly adopts a basket type sand mill to coarsely grind ferrite particles, and then adopts a planetary ball mill to perform ball milling. The planetary ball mill is provided with four ball milling tanks on the same rotary table, and when the rotary table rotates, the ball milling tanks revolve around the rotary table shaft and rotate around the shaft center of the ball milling tanks to perform planetary motion. The grinding balls in the tank collide with each other in high-speed movement, and grind and mix the samples; in the high-speed rotation process of the ball milling tank, the grinding balls and the powder are thrown to the wall of the tank by strong centrifugal force, powder particles are uniformly distributed and are crushed mainly at the position of the wall of the tank, so that the crushing effect is relatively good, and the obtained ball milling materials are uniform.
In the present invention, the D50 particle size of the ball mill is 0.5 to 0.8. Mu.m, the maximum particle size is 5 μm or less, and the specific surface area (BET) is 10 to 15m 2 And/g. Compared with powder prepared by a primary sanding process, the ferrite core sintered by the ball mill has the advantages of uniform grain size, good consistency, fewer air holes, high density, more advantages of microstructure and better performance under the same sintering process.
In the invention, the ball mill material is slurry.
After the ball grinding material is obtained, the ball grinding material is granulated to obtain the granule material. In the present invention, the granulation is preferably spray granulation. In the invention, the inlet temperature of the granulation tower in the granulation process is preferably 280+/-20 ℃, more preferably 290 ℃; the outlet temperature is preferably 90.+ -. 10 ℃.
After the granular material is obtained, the granular material is pressed to obtain a blank. In the present invention, the pressing temperature is preferably room temperature; the pressing pressure is preferably 10-15 MPa. In a specific embodiment of the invention, the blank is a blank with an outer diameter of 25mm, an inner diameter of 15mm and a height of 10 mm.
After the blank is obtained, the blank is sintered to obtain the MnZn ferrite material. In the present invention, the sintering is preferably performed in a fully automatic atmosphere controlled bell jar furnace.
In the present invention, the sintering conditions preferably include: heating to 400-450 ℃ at a heating rate of 1-2 ℃/min; then heating to 700 ℃ at a heating rate of 0.5-1 ℃/min; then heating to 1150 ℃ at a heating rate of 2-3 ℃/min; then heating to 1250-1350 ℃ at a heating rate of 2.5-4 ℃/min, and preserving heat for 3.5-5.5 h;
in the process from room temperature to 700 ℃, the sintering atmosphere is air atmosphere; the oxygen volume content is 5-10% at 700-1000 ℃; the oxygen volume content is 3-5% at 1000-1100 ℃; the oxygen volume content is 2-4% at 1100-1150 ℃; the oxygen volume content is 1-3% at 1150-1250 ℃; the oxygen volume content is 1-5% at 1250-1350 ℃.
In the invention, the sintering preferably further comprises cooling; the cooling conditions preferably include: the cooling speed of 1350-1250 ℃ is 2-5 ℃/min, and the oxygen volume content is 2-5%; the temperature reduction speed at 1250-1150 ℃ is 2-4 ℃/min, and the oxygen volume content is 1-2%; the temperature reduction speed of 1150-1050 ℃ is 1-3 ℃/min, and the oxygen volume content is 0.5-1.5%; the cooling speed of 1050-1000 ℃ is 1-2 ℃/min, and the oxygen volume content is 0.01-0.05%; naturally cooling below 1000deg.C, and oxygen volume content below 0.01%.
The MnZn ferrite material prepared by the invention belongs to a power ferrite material, is biased on the power consumption characteristic of the material, and has no requirements on magnetic permeability and impedance performance. Thus the sintering process is very different from the sintering process of high permeability and high impedance. Compared with the high-conductivity ferrite material, the sintering temperature of the power ferrite material is low, the oxygen content of the atmosphere is low, and the control requirement precision is high. The MnZn ferrite material prepared by the invention adopts a multistage sanding process, so that the prepared powder has the advantages of fine particle size, uniform particle size, high specific surface area, good sintering activity and high sintering adaptability, thus being applicable to a wider temperature range and atmosphere, and realizing higher sintering density and permeability by sintering at a lower temperature; meanwhile, the grain growth is relatively uniform, the microscopic defects and pores are few, and the power consumption characteristic is excellent.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
(1) According to mole percent: fe (Fe) 2 O 3 55mol%, znO 8mol%, niO 1mol%, cuO0.1mol%, and Mn for the rest 3 O 4 The method comprises the steps of carrying out a first treatment on the surface of the Weighing main raw materials, mixing, putting into a basket type sand mill, adding water accounting for 50 weight percent of the weight of the mixture, performing first sand milling for 60 minutes, and discharging; the sand grinding medium is an alloy steel ball with the diameter of 5mm, the ball ratio is 1:5, and the rotating speed is 60r/min;
(2) Drying the obtained sand grinding slurry in a high-temperature drying oven at 200 ℃ for 80min to obtain a first sand grinding material;
(3) Placing the first sand grinding material into a burning pot, and placing the first sand grinding material into a muffle furnace for presintering, wherein the presintering atmosphere is air, the presintering temperature is 900 ℃, and the presintering time is 90min; cooling to room temperature in air to obtain a presintered material;
(4) Placing the presintered materials into a basket type sand mill for second sand milling, adding water accounting for 50wt% of the powder, wherein a sand milling medium is alloy steel balls, the diameters of the alloy steel balls are 5mm, the ball ratio is 1:5, the sand milling time is 60min, and the rotating speed is 100r/min, so as to obtain second sand milling slurry;
(5) Pouring the second sand grinding slurry into a planetary ball mill, and adding auxiliary raw materials, wherein the total weight of the main raw materials is 100%, and the auxiliary raw materials are as follows: caCO (CaCO) 3 0.05wt％，Nb 2 O 5 0.04wt％，TiO 2 0.05wt％，BaO 0.01wt％，Ta 2 O 5 0.03wt％，HfO 2 0.01wt%; adding polyvinyl alcohol glue accounting for 0.005 percent of the weight of the slurry; round alloy steel balls with the diameter of 3mm are used as ball milling media, and the ball ratio is 1:5; starting a planetary ball mill to perform ball milling for 80min at a ball milling rotating speed of 300r/min to obtain ball milling slurry;
(6) Carrying out spray granulation on the ball-milling slurry to obtain power ferrite spray particles; the inlet temperature of the granulating tower is 290 ℃, and the outlet temperature is 90 ℃;
(7) Pressing the power ferrite spray particles (the temperature is 25 ℃, the pressure is 10MPa, the heat preservation and pressure maintaining time is 0.5 s) into blanks with the outer diameter of 25mm, the inner diameter of 15mm and the height of 10 mm;
(8) Stacking the blanks together by 5, and sintering in a fully-automatic atmosphere control bell jar furnace to obtain 5 power MnZn ferrite cores which are stacked in sequence, wherein the specific operation of sintering is as follows: heating to 400 ℃ at a heating rate of 1 ℃/min, wherein the atmosphere is air; then heating to 700 ℃ at 0.5 ℃/min, adjusting the heating speed to 2 ℃/min, heating to 1150 ℃, heating to 1300 ℃ at 2.5 ℃/min, and preserving heat for 4 hours; atmosphere control: in the process from room temperature to 700 ℃, the atmosphere is air; the oxygen volume content is 5% at 700-1000 ℃, 3% at 1000-1100 ℃, 2% at 1100-1150 ℃, 1% at 1150-1250 ℃ and 4% at 1250-1350 ℃; after the temperature reduction starts, the temperature reduction speed is 2 ℃/min at 1350-1250 ℃ and the oxygen volume content is 3%; the temperature reduction speed of 1250-1150 ℃ is controlled at 2 ℃/min, and the oxygen volume content is 2%; the temperature reduction speed is controlled at 3 ℃/min at 1150-1050 ℃, and the oxygen volume content is 1.0%; the cooling speed of 1050-1000 ℃ is 2 ℃/min, the oxygen volume content is 0.05%, the natural cooling is performed below 1000 ℃, and the oxygen volume content is controlled below 0.01%.
Sample ring magnetic cores with the outer diameter of 25mm, the inner diameter of 15mm and the height of 10mm are prepared according to the process, three sample ring magnetic cores in the middle are selected, and under the condition of 5Ts winding, a rock SY8218 and B-H tester are used for testing the power consumption and the Bs characteristics, and the results are shown in Table 1:
TABLE 1 Performance results of Power MnZn ferrite cores
The initial permeability is higher than 2400 under the condition of 10kHz and 0.1V by adopting a optimized UC2876 LCR digital bridge. Under the winding of f=100 kHz, bm=200mT and N=5Ts tested by a rock-wasaki SY 8218B-H tester, the power loss at 100 ℃ is 260-270 kW/m 3 。
The power consumption of the power MnZn ferrite core prepared by the invention reaches the international leading level, and the power loss in the working process is obviously lower than that of the power ferrite material (the power loss at 100 ℃ is 300-350 kW/m) of the conventional core in the market at present 3 ). The transformer manufactured by the material can greatly reduce the heating value in the working process of the transformer, improve the conversion efficiency and realize the purposes of energy conservation and emission reduction.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A MnZn ferrite material is characterized in that the preparation raw materials comprise a main raw material and an auxiliary raw material; the main raw materials comprise, based on 100% of the total molar quantity of the main raw materials: fe (Fe) 2 O 3 55 to 58mol percent, 6 to 8mol percent of ZnO, 0.5 to 1.5mol percent of NiO, 0 to 0.5mol percent of CuO and the balance of Mn 3 O 4 ；
Based on the total weight of the main raw materialsThe auxiliary raw materials comprise, by 100 percent: caCO (CaCO) 3 0.01～0.08wt％，Nb 2 O 5 0.02～0.05wt％，TiO 2 0.05～0.2wt％，BaO 0.01～0.06wt％，Ta 2 O 5 0.01～0.1wt％，HfO 2 0.01～0.06wt％。
2. The method for preparing the MnZn ferrite material as defined in claim 1, comprising the following steps:
performing first sand grinding on the main raw material to obtain a first sand grinding material;
presintering the sand grinding material to obtain presintering material;
performing second sand grinding on the presintered material to obtain a second sand grinding material;
mixing the second sand abrasive, auxiliary raw materials and a binder, and performing ball milling to obtain a ball abrasive;
granulating the ball milling material to obtain granule materials;
pressing the granular material to obtain a blank;
and sintering the blank to obtain the MnZn ferrite material.
3. The method of making according to claim 2, wherein the first sand mill is a wet sand mill.
4. The preparation method according to claim 2, wherein the presintering temperature is 850-1000 ℃ and the heat preservation time is 30-120 min; the presintering atmosphere is an air atmosphere.
5. The method of making according to claim 2, wherein the second sand mill is a wet sand mill.
6. The method of claim 2, wherein the adhesive is a polyvinyl alcohol glue.
7. The preparation method according to claim 2, wherein the rotational speed of the ball mill is 200-360 r/min; the ball milling time is 60-120 min.
8. The method of claim 2, wherein the granulating is spray granulating.
9. The method of claim 2, wherein the sintering conditions include: heating to 400-450 ℃ at a heating rate of 1-2 ℃/min; then heating to 700 ℃ at a heating rate of 0.5-1 ℃/min; then heating to 1150 ℃ at a heating rate of 2-3 ℃/min; then heating to 1250-1350 ℃ at a heating rate of 2.5-4 ℃/min, and preserving heat for 3.5-5.5 h;
in the process from room temperature to 700 ℃, the sintering atmosphere is air atmosphere; the oxygen volume content is 5-10% at 700-1000 ℃; the oxygen volume content is 3-5% at 1000-1100 ℃; the oxygen volume content is 2-4% at 1100-1150 ℃; the oxygen volume content is 1-3% at 1150-1250 ℃; the oxygen volume content is 1-5% at 1250-1350 ℃.
10. The method of claim 2 or 9, wherein the sintering further comprises cooling; the cooling conditions comprise: the cooling speed of 1350-1250 ℃ is 2-5 ℃/min, and the oxygen volume content is 2-5%; the temperature reduction speed at 1250-1150 ℃ is 2-4 ℃/min, and the oxygen volume content is 1-2%; the temperature reduction speed of 1150-1050 ℃ is 1-3 ℃/min, and the oxygen volume content is 0.5-1.5%; the cooling speed of 1050-1000 ℃ is 1-2 ℃/min, and the oxygen volume content is 0.01-0.05%; naturally cooling below 1000deg.C, and oxygen volume content below 0.01%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1064715A (en) * | 1996-08-14 | 1998-03-06 | Kawasaki Steel Corp | Low loss ferrite magnetic core material |
| CN106007696A (en) * | 2016-05-13 | 2016-10-12 | 泰州茂翔电子器材有限公司 | Wide-temperature-range high-Bs ferrite material and preparing technology thereof |
| CN110330327A (en) * | 2019-07-04 | 2019-10-15 | 湖北文理学院 | A kind of high TcHigh frequency ultra-low loss soft magnetic ferrite and preparation method thereof |
| CN111689770A (en) * | 2020-05-19 | 2020-09-22 | 天通控股股份有限公司 | High-temperature high-BsLow-loss soft magnetic ferrite material and preparation method thereof |
-
2023
- 2023-04-14 CN CN202310397629.3A patent/CN116283263A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1064715A (en) * | 1996-08-14 | 1998-03-06 | Kawasaki Steel Corp | Low loss ferrite magnetic core material |
| CN106007696A (en) * | 2016-05-13 | 2016-10-12 | 泰州茂翔电子器材有限公司 | Wide-temperature-range high-Bs ferrite material and preparing technology thereof |
| CN110330327A (en) * | 2019-07-04 | 2019-10-15 | 湖北文理学院 | A kind of high TcHigh frequency ultra-low loss soft magnetic ferrite and preparation method thereof |
| CN111689770A (en) * | 2020-05-19 | 2020-09-22 | 天通控股股份有限公司 | High-temperature high-BsLow-loss soft magnetic ferrite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 陈文等编著: "《材料物理性能》", 31 January 2010, 武汉理工大学出版社, pages: 230 * |
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