CN118430923A - Preparation process of powder with ultrahigh magnetic conductivity - Google Patents
Preparation process of powder with ultrahigh magnetic conductivity Download PDFInfo
- Publication number
- CN118430923A CN118430923A CN202410653072.XA CN202410653072A CN118430923A CN 118430923 A CN118430923 A CN 118430923A CN 202410653072 A CN202410653072 A CN 202410653072A CN 118430923 A CN118430923 A CN 118430923A
- Authority
- CN
- China
- Prior art keywords
- component
- grinding
- ultra
- high permeability
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000843 powder Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 25
- 230000035699 permeability Effects 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 7
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000001238 wet grinding Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 238000001354 calcination Methods 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 3
- 239000006247 magnetic powder Substances 0.000 claims description 3
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 238000003746 solid phase reaction Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910018068 Li 2 O Inorganic materials 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
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15341—Preparation processes therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- 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
- H01F1/14—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 metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Magnetic Ceramics (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention relates to the technical field of ferrite powder preparation, in particular to a preparation process of ultra-high magnetic permeability powder, which comprises the following steps: s1, weighing raw materials; s2, mixing and wet grinding; s3, presintering; s4, mixing and grinding; s5, sintering and forming; s6, spray granulation; the preparation process steps of the powder with the ultrahigh magnetic conductivity are simple, the powder can be formed by rapid granulation and put into use, meanwhile, the conditions in the scheme are simple, the production can be conveniently carried out, and meanwhile, the production cost can be reduced through the simple steps and the operation conditions, so that the production effect of the powder with the ultrahigh magnetic conductivity is improved.
Description
Technical Field
The invention relates to the technical field of ferrite powder preparation, in particular to a preparation process of ultra-high permeability powder.
Background
In recent years, the development and progress of portable electronic technology has driven the development of multilayer chip inductors toward miniaturization, integration, and multifunctionality, particularly toward high frequencies. However, high frequency multilayer chip inductor devices tend to result in deteriorated magnetic properties and higher losses, while ferrite ceramics with high resistivity and ultra-high permeability are superior candidates.
The invention of publication number CN 104944933B discloses a preparation method of ferrite magnetic core with high inductance and high permeability for high frequency transformer, which comprises weighing 50-55wt% of Fe 2O3, 8-15wt% of ZnO, 15-25wt% of MnO and 18-22wt% of NiO as the first component, wherein the total sum of the components is 100%; weighing 20-30% of La 2O3, 5-8% of Nb 2O5, 15-20% of V 2O5, 15-25% of CuO, 10-15% of Bi 2O3, 3-5% of TiO 2 and 3-5% of Cs 2 O as second components, wherein the sum of the components is 100%; weighing Li 2 O accounting for 3-5% of the total mass of the first component and the second component; the mass ratio of the first component to the second component is 7:0.5 or 10:1, the ferrite core is prepared, the process is simple, the design is reasonable, the cost is low, the realization is easy, the nanocrystalline manganese zinc ferrite prepared by the ferrite core has ultrahigh inductance value and magnetic permeability, the comprehensive performance is excellent, the ferrite core is completely suitable for the requirements of a transformer on the inductance value and the magnetic flux of the core, and the application prospect is wide.
However, there are still some disadvantages in the above solutions, in which the ferrite prepared in the above solutions has insufficient permeability to cope with and meet the increasingly advanced use requirements. In view of this, we propose a process for preparing ultra-high permeability powders.
Disclosure of Invention
The invention aims to provide a preparation process of ultra-high magnetic permeability powder, which solves the problems that the magnetic permeability of ferrite prepared in the prior art is insufficient to cope with and meet increasingly advanced use requirements.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The preparation process of the ultra-high magnetic conductivity powder comprises the following steps:
S1, weighing raw materials; 48-58% of Fe 2O3, 12-17% of ZnO and 25-40% of MnO are weighed as a first component, the total of the mass percentages of all components in the first component is 100%, 20.2-33.9% of CaO, 4-6.8% of SiO 2, 35.4-59.3% of La 2O3, 2.9-15.2% of Nb 2O5 and the balance of TiO 2 are weighed as a second component, and the total of the mass percentages of all components in the second component is 100%;
S2, mixing and wet grinding; adding Fe 2O3, znO and MnO into grinding equipment according to the mass percentage in the step S1, adding deionized water according to the ratio of the first component to water of 2:1, and then performing grinding operation;
s3, presintering; putting the dried first component into sintering equipment and calcining for 3 hours at 900-950 ℃;
S4, mixing and grinding; adding CaO, siO 2、La2O3、Nb2O5 and TiO 2 into grinding equipment according to the proportion in the step S1, simultaneously adding the first component subjected to presintering in the step S3 into the grinding equipment, mixing and grinding with the second component, and adding deionized water according to the proportion of the material to water of 2:1;
S5, sintering and forming; putting the materials subjected to grinding in the step S4 into calcining equipment, adding polyethylene glycol solution with the mass percent of 8%, and calcining for 2-4 hours at the temperature of 1100-1150 ℃;
S6, spray granulation; and (3) crushing the materials generated by the full solid phase reaction in the step (S5), mixing and sanding with 30-50% of deionized water, less than 0.1% of dispersing agent and defoaming agent and 0.6-0.9% of polyvinyl alcohol, and then spraying and granulating the sanded slurry to obtain the magnetic powder.
Preferably, the step S3 and the step S5 are performed with a drying operation for the material before the pre-sintering, and the mixed material is dried at 75-95 ℃ during the drying.
Preferably, the grinding time in the step S2 and the step S4 is 2 to 6 hours.
Preferably, in the step S2 and the step S4, a vibration ball mill is adopted to mix the first component, the second component and the combination of the first component and the second component respectively, and the particle size of the evenly mixed materials is controlled to be 1.2 μm-1.5 μm.
Preferably, the mass ratio of the first component to the second component in the step S4 is 7.5:1-12:1.
Preferably, after the sintering operation is completed in step S3 and step S5, the sintered product is naturally cooled in an environment where the volume ratio of nitrogen to oxygen is 1:1.
Preferably, in the step S6, the sanded slurry is spray granulated at a temperature of 200 to 300 ℃ into round particles with surface drying, middle wetting, good fluidity and dispersibility, and the water content of the particles is 0.25 to 0.75%.
By means of the technical scheme, the invention provides a preparation process of the powder with the ultrahigh magnetic conductivity. The method has at least the following beneficial effects:
(1) The preparation process of the powder with the ultrahigh magnetic conductivity is simple in steps, the powder can be rapidly granulated and formed, and meanwhile, the conditions in the scheme are simpler, the production can be conveniently carried out, and meanwhile, the production cost can be reduced through simple steps and operation conditions, so that the production effect of the powder with the ultrahigh magnetic conductivity is improved.
(2) The powder is prepared in the spray granulation mode, so that the uniformity of the powder can be improved, the particle size of the powder is reduced, the subsequent use of the powder is improved, and meanwhile, the round particles with dry surfaces, wet middle and good fluidity and dispersibility can reduce the mutual adhesion among the powder particles.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and together with the description serve to explain a part of the application:
FIG. 1 is a schematic flow chart of the present invention;
FIG. 2 is a comparative schematic diagram of permeability according to the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
As shown in fig. 1-2, the preparation process of the ultra-high permeability powder of the present invention is operated by the following steps when in use: firstly, raw materials are weighed; 48 to 58 percent of Fe 2O3, 12 to 17 percent of ZnO and 25 to 40 percent of MnO are weighed as a first component, the total of the mass percentages of the components in the first component is 100 percent, 20.2 to 33.9 percent of CaO,4 to 6.8 percent of SiO 2 and 35.4 to 59.3 percent of La 2O3 are weighed, 2.9-15.2% of Nb 2O5, and the balance of TiO 2 as a second component, wherein the sum of the mass percentages of the components of the second component is 100%, and then mixing and wet grinding are carried out; Adding Fe 2O3, znO and MnO into grinding equipment according to the mass percentage in the step S1, adding deionized water according to the proportion of the first component and water of 2:1, grinding for 2-6 hours, drying the mixed material at 75-95 ℃ after finishing grinding, and pre-sintering; putting the dried first component into sintering equipment, calcining for 3 hours at 900-950 ℃, placing the sintered product in an environment with the volume ratio of nitrogen to oxygen being 1:1, naturally cooling the sintered product, and then carrying out mixed grinding; Adding CaO, siO 2、La2O3、Nb2O5 and TiO 2 into grinding equipment according to the proportion in the step S1, simultaneously adding the first component which is subjected to presintering in the step S3 into the grinding equipment to be mixed and ground with the second component, adding deionized water according to the proportion of the material to water of 2:1, mixing and grinding for 2-6 hours, and then sintering and forming; putting the materials subjected to grinding in the step S4 into calcining equipment, adding polyethylene glycol solution with the mass percent of 8%, calcining for 2-4 hours at the temperature of 1100-1150 ℃, placing the sintered product in an environment with the volume ratio of nitrogen to oxygen of 1:1, naturally cooling the sintered product, and finally carrying out spray granulation; And (3) crushing the materials generated by the full solid phase reaction in the step (S5), mixing and sanding with 30-50% of deionized water, less than 0.1% of dispersing agent and defoaming agent and 0.6-0.9% of polyvinyl alcohol, and then spraying and granulating the sanded slurry to obtain the magnetic powder.
Example 1: mixing, sintering and granulating the first component which is 55% of Fe 2O3, 15% of ZnO and 30% of MnO, the second component which is 30% of CaO,6% of SiO 2, 52.6% of La 2O3 and 11.4% of Nb 2O5 according to the mass ratio of 10:1;
Example 2: mixing, sintering and granulating the first component which is 55% of Fe 2O3, 15% of ZnO and 30% of MnO by mass, the second component which is 23.1% of CaO,4.6% of SiO 2, 40.5% of La 2O3, 2.9% of Nb 2O5 and 28.9% of TiO 2 by mass ratio of 10:1;
Comparative example: mixing, sintering and granulating the first component which is 55% of Fe 2O3, 15% of ZnO and 30% of MnO, the second component which is 33.9% of CaO,6.8% of SiO 2 and 59.3% of La 2O3 according to the same steps, wherein the mass ratio of the first component to the second component is 10:1;
As can be seen from the data in fig. 2, the initial permeability in both example 1 and example 2 is much greater than that of the comparative example.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The preparation process of the ultra-high permeability powder is characterized by comprising the following steps of: the method comprises the following steps:
S1, weighing raw materials; 48-58% of Fe 2O3, 12-17% of ZnO and 25-40% of MnO are weighed as a first component, the total of the mass percentages of all components in the first component is 100%, 20.2-33.9% of CaO, 4-6.8% of SiO 2, 35.4-59.3% of La 2O3, 2.9-15.2% of Nb 2O5 and the balance of TiO 2 are weighed as a second component, and the total of the mass percentages of all components in the second component is 100%;
S2, mixing and wet grinding; adding Fe 2O3, znO and MnO into grinding equipment according to the mass percentage in the step S1, adding deionized water according to the ratio of the first component to water of 2:1, and then performing grinding operation;
s3, presintering; putting the dried first component into sintering equipment and calcining for 3 hours at 900-950 ℃;
S4, mixing and grinding; adding CaO, siO 2、La2O3、Nb2O5 and TiO 2 into grinding equipment according to the proportion in the step S1, simultaneously adding the first component subjected to presintering in the step S3 into the grinding equipment, mixing and grinding with the second component, and adding deionized water according to the proportion of the material to water of 2:1;
S5, sintering and forming; putting the materials subjected to grinding in the step S4 into calcining equipment, adding polyethylene glycol solution with the mass percent of 8%, and calcining for 2-4 hours at the temperature of 1100-1150 ℃;
S6, spray granulation; and (3) crushing the materials generated by the full solid phase reaction in the step (S5), mixing and sanding with 30-50% of deionized water, less than 0.1% of dispersing agent and defoaming agent and 0.6-0.9% of polyvinyl alcohol, and then spraying and granulating the sanded slurry to obtain the magnetic powder.
2. The process for preparing the ultra-high permeability powder according to claim 1, wherein: and the step S3 and the step S5 are used for drying the materials before presintering, and the mixed materials are dried under the condition of 75-95 ℃ during drying.
3. The process for preparing the ultra-high permeability powder according to claim 1, wherein: the grinding time in the step S2 and the step S4 is 2-6 hours.
4. The process for preparing the ultra-high permeability powder according to claim 1, wherein: and in the step S2 and the step S4, a vibration ball mill is adopted to respectively mix the first component, the second component and the combination of the first component and the second component, and the particle size of the uniformly mixed materials is controlled to be 1.2-1.5 mu m.
5. The process for preparing the ultra-high permeability powder according to claim 1, wherein: wherein the mass ratio of the first component to the second component in the step S4 is 7.5:1-12:1.
6. The process for preparing the ultra-high permeability powder according to claim 1, wherein: after the sintering operation is completed in the step S3 and the step S5, the sintered product is placed in an environment with the volume ratio of nitrogen to oxygen being 1:1, and natural cooling is carried out on the sintered product.
7. The process for preparing the ultra-high permeability powder according to claim 1, wherein: in the step S6, the sanded slurry is spray granulated at the temperature of 200-300 ℃ to form round particles with dry surface, wet middle and good fluidity and dispersibility, and the water content of the particles is 0.25-0.75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410653072.XA CN118430923A (en) | 2024-05-24 | 2024-05-24 | Preparation process of powder with ultrahigh magnetic conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410653072.XA CN118430923A (en) | 2024-05-24 | 2024-05-24 | Preparation process of powder with ultrahigh magnetic conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118430923A true CN118430923A (en) | 2024-08-02 |
Family
ID=92307235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410653072.XA Withdrawn CN118430923A (en) | 2024-05-24 | 2024-05-24 | Preparation process of powder with ultrahigh magnetic conductivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118430923A (en) |
-
2024
- 2024-05-24 CN CN202410653072.XA patent/CN118430923A/en not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107311637B (en) | A kind of method that low-power consumption manganese-zinc ferrite is prepared based on nucleocapsid crystal grain | |
| US9984799B2 (en) | Ferrite composition and electronic component | |
| JP2837150B2 (en) | Soft magnetic material for inductor and method of manufacturing inductor using the same | |
| CN110304913B (en) | High-frequency ultralow-loss manganese-zinc soft magnetic ferrite material and preparation method thereof | |
| CN111943658B (en) | Wide-temperature-range low-loss MnZn ferrite material and preparation method thereof | |
| CN107352993A (en) | A kind of high frequency Mn-Zn soft magnetic ferrite and preparation method thereof | |
| JP2923268B2 (en) | High frequency soft magnetic material for low temperature firing and method of manufacturing inductor using the same | |
| CN112430079A (en) | High-frequency wide-temperature high-Q-value soft magnetic ferrite material and preparation method thereof | |
| US11958779B2 (en) | MnZn ferrite material with wide temperature range and low consumption, and preparation method thereof | |
| CN113603472B (en) | Preparation method of NiCuZn ferrite based on LTCC technology | |
| CN114605142A (en) | Composite ferrite substrate material for LTCF transformer and preparation method thereof | |
| CN118430923A (en) | Preparation process of powder with ultrahigh magnetic conductivity | |
| CN114634356B (en) | Ultralow-loss manganese zinc ferrite material at 1MHz and preparation method thereof | |
| CN113284731B (en) | High-frequency large-magnetic-field soft magnetic ferrite material and preparation method thereof | |
| CN102044320A (en) | Soft-magnetic Mn-Zn ferrite material with ultrahigh magnetic permeability and a preparation method thereof | |
| CN115028443B (en) | Laminated ferrite inductance material and preparation method thereof | |
| CN110342922A (en) | A kind of complex ferrite material and preparation method thereof, laminated inductance | |
| CN112341179A (en) | High-frequency manganese-zinc ferrite material, and preparation method and application thereof | |
| CN109320230B (en) | Preparation method of manganese-zinc soft magnetic ferrite material with four high characteristics | |
| CN116323491A (en) | MnZn ferrite and method for producing same | |
| CN114477987B (en) | Preparation process of wide-temperature manganese-zinc ferrite material | |
| CN112374879A (en) | Preparation method of anti-electromagnetic interference manganese-zinc ferrite material | |
| CN101477869A (en) | Novel nickel zincium soft magnetic ferrite and manufacturing process thereof | |
| CN115611624B (en) | Manganese zinc ferrite material with high temperature and high Tc and high magnetic conductivity and preparation method thereof | |
| CN111039668A (en) | Manganese-zinc ferrite with wide temperature, high initial permeability and high Curie temperature and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20240802 |