CN110041064A - Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof - Google Patents
Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof Download PDFInfo
- Publication number
- CN110041064A CN110041064A CN201910307825.0A CN201910307825A CN110041064A CN 110041064 A CN110041064 A CN 110041064A CN 201910307825 A CN201910307825 A CN 201910307825A CN 110041064 A CN110041064 A CN 110041064A
- Authority
- CN
- China
- Prior art keywords
- base
- impedance value
- magnetic bead
- additive
- low temperature
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—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
- 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
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
-
- 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
- H01F1/34—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
- H01F1/36—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 in the form of particles
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3256—Molybdenum oxides, molybdates or oxide forming salts thereof, e.g. cadmium molybdate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
- C04B2235/3267—MnO2
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
- C04B2235/3277—Co3O4
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3298—Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof, formula include base-material and additive, wherein base-material, in mass ratio, Fe2O355.0~70.0%, NiO 5.0~15.0%, ZnO 15~25.0%, CuO 3~8%；Additive, in terms of base-material gross mass, Bi2O31.0~3.0%, Co3O40.1~1.0%, MoO30.05~0.3%, MnO20.1-0.3%；La2O30.1-0.5%.The powder is mixed by base-material, is dried, pre-burning, and additive is then added, and base-material and additive are mixed dries pulverizing.Magnetic bead powder similar with other of powder production is compared, and under same design circle number and manufacturing conditions, impedance value is higher than other powders by 20%.
Description
Technical field
The present invention relates to ferrite powder, the ferrite powder and the preparation that make universal Stacked magnetic bead are referred in particular to
Method.
Background technique
With the production of laminated chip inductor/magnetic bead maturation with it is perfect, market sale price is lower and lower, 2008,
The magnetic bead selling price of single only 1608 sizes is 0.03 yuan/, and present selling price only had 0.008 yuan/, than 2008
Selling price reduces by 73.3%；Although the raising of qualification rate is carried out in mature production technology stabilized zone, the amplitude of price reduction is much big
Improving bring cost in qualification rate reduces space, and production cost pressure is high, is badly in need of researching and developing a powder, in device detection frequency
Impedance value is relatively high under 100MHz, to reduce the design circle number of magnetic bead, to reduce silver-colored consumption, reduces material cost；Design circle
Several reductions improve production efficiency, to reduce the electricity charge and cost of labor.
Summary of the invention
The object of the present invention is to provide a kind of low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and
Preparation method, the magnetic bead of ferrite powder preparation, design circle number is small, and the consumption of material-silver is small in electrode, reduces material
Cost improves production efficiency.
To achieve the above object, technical solution provided by the invention is that a kind of Stacked magnetic bead high impedance value low temperature is total
Soft ferromagnetic powder is burnt, formula includes base-material and additive, wherein base-material, in mass ratio, Fe2O355.0~70.0%,
NiO 5.0~15.0%, ZnO 15~25.0%, CuO 3~8%；Additive, in terms of base-material gross mass, Bi2O31.0~
3.0%, Co3O40.1~1.0%, MoO30.05~0.3%, MnO20.1-0.3%；La2O30.1-0.5%.
The present invention also provides the Stacked magnetic bead preparation method of low temperature co-fired soft ferromagnetic powder, step packets
It includes: 1) accurately being weighed according to the proportion of base-material each component；2) it is gone according to base-material dry powder and the weight ratio 1:1.3 of deionized water addition
Ionized water is stirred to form base-material slurry, and D50=0.8-1.2 microns of granularity requirements, D90 is less than 2.0 microns；It 3) will preparation
Base-material slurry drying, water content≤0.6% after drying；4) base-material pre-burning, by the base-material pre-burning after drying, calcined temperature
800 DEG C -900 DEG C, keep the temperature 2-5 hours；5) in terms of base-material quality, according to additive mass ratio, additive each component is weighed；6) will
Base-material is mixed with additive after pre-burning, and deionized water is added according to the weight ratio of dry powder after mixing and deionized water 1:1.3 and stirs
Mixing is mixed, D50=0.8-1.2 microns of granularity requirements, D90 is less than 2.0 microns；7) finished product drying: water content after drying≤
0.6%；8) it pulverizes and sieves to obtain finished product.
The drying temperature 200-250 degree of the step 3) and step 7).
Step 2) and step 6) mixing and ball milling, material: ball: water ratio=3:1:1.3,250 revs/min of rotational speed of ball-mill, ball milling
Mode rotates forward 30 minutes, then inverts 30 minutes.
Step 8) pulverizes and sieves mesh number as 40-80 mesh.
Ferrite powder prepared by the present invention improves the electromagnetic performance of powder by adding suitable additive: magnetic permeability μ '
=100/200/300 (1MHz, 500mV).Quality factor: Q is in 80 or more (1MHz, 500mV).Sintering temperature: 900 degree of heat preservations.
Rush of current: after 5A rush of current, magnetic conductivity change rate is less than 15%.Direct current biasing: testing under 3A electric current, magnetic conductivity change rate
Less than 90%.Impedance value under powder magnet ring 40MHZ: when magnetic conductivity 100, impedance value minimum 2800；When magnetic conductivity 150, impedance value
Minimum 2000；When magnetic conductivity 200, impedance value minimum 2000；When magnetic conductivity 250, impedance value minimum 1500；When magnetic conductivity 300, resistance
Anti- value minimum 1500.Magnetic bead powder similar with other of powder production is compared, under same design circle number and manufacturing conditions,
Impedance value is higher than other powders by 20%.
Detailed description of the invention
Fig. 1, SH1/SH2/SH3 magnetic conductivity -- frequency curve.
Fig. 2, SH1/SH2/SH3 quality factor -- frequency curve.
Fig. 3, SH1/SH2/SH3 impedance Z -- frequency curve.
Fig. 4, SH4/SH5 magnetic conductivity -- frequency curve.
Fig. 5, SH4/SH5 quality factor -- frequency curve.
Fig. 6, SL4/SL5/SL6 impedance Z -- frequency curve.
Fig. 7, SH1/SH2/SH3/SH4/SH5 magnetic conductivity-rush of current curve.
Fig. 8, SH1/SH2/SH3/SH4/SH5 magnetic conductivity-tributary offset change curve
Fig. 9, SH1 electromicroscopic photograph, crystal grain are 3 microns maximum.
Figure 10, SH2 electromicroscopic photograph, crystal grain are 5 microns maximum.
Figure 11, SH3 electromicroscopic photograph, crystal grain are 2 microns maximum.
Figure 12, SH4 electromicroscopic photograph, crystal grain are 5 microns maximum.
Figure 13, SH5 electromicroscopic photograph, crystal grain are 5 microns maximum.
Specific embodiment
The present invention relates to chemical reagent purity requirement: di-iron trioxide Fe2O3>=99.2%, D50≤15.0 are micro-
Rice, nickel protoxide NiO >=75%, D50≤10.0 micron, copper oxide CuO >=70%, D50≤20.0 micron, zinc oxide ZnO >=
97.7%, D50≤1.0 micron, bismuth oxide Bi2O3>=99%, D50≤5.0 micron, cobaltosic oxide >=95%, D50≤
10.0 microns, molybdenum oxide >=99%, D50≤3.0 micron；Manganese dioxide >=70%, D50≤10.0 micron；Lanthanum sesquioxide >=
99%, D50≤5.0 micron.
The low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value of the invention, formula include base-material and
Additive, wherein base-material, in mass ratio, Fe2O3(di-iron trioxide) 55.0~70.0%, NiO (nickel oxide) 5.0~
15.0%, ZnO (zinc oxide) 15~25.0%, CuO3~8%；Additive, in terms of base-material gross mass, Bi2O3(bismuth oxide)
1.0~3.0%, Co3O4(cobaltosic oxide) 0.1~1.0%；MoO3(molybdenum oxide) 0.05~0.3%；MnO2(manganese dioxide)
0.1-0.3%；La2O3(lanthanum sesquioxide) 0.1-0.5%.
The preparation method of the low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value of the invention, step
It include: 1) accurately to be weighed according to the proportion of base-material each component；2) deionized water is added in the base-material dry powder prepared to be stirred
Base-material slurry is formed, D50=0.8-1.2 microns of granularity requirements, D90 is less than 2.0 microns；3) the base-material slurry filters pressing of preparation is dried
It is dry, moisture content≤0.6% after drying；4) base-material pre-burning 800 DEG C -900 DEG C of calcined temperature, protects the base-material pre-burning after drying
It is 2-5 hours warm；5) in terms of base-material quality, according to additive mass ratio, additive each component is weighed；6) by base-material after pre-burning with add
After adding agent to mix, deionized water is added and is stirred, D50=0.8-1.2 microns of granularity requirements, D90 is less than 2.0 microns；7) it dries
It is dry, water content≤0.6% after drying；8) it pulverizes and sieves to obtain finished product.
Step 2) and step 6) mixing and ball milling, material: ball: water ratio=3:1:1.3,250 revs/min of rotational speed of ball-mill, ball milling
Mode rotates forward 30 minutes, then inverts 30 minutes.Step 8) pulverizes and sieves mesh number as 40-80 mesh.The baking of step 3) and step 7)
Dry temperature 200-250 degree.
Carry out the technical solution that the present invention will be described in detail below by way of specific embodiment.
Table one: each group distribution ratio of embodiment 1 to embodiment 5
Table one is embodiment 1 to the base-material each component of embodiment 5 and the specific formula of additive each component, according to embodiment
1 prepares powder to the formula of embodiment 5, since the process of preparing of embodiment 1 to embodiment 5 is identical, thus, it is only required to press
The ingredient of each embodiment is weighed according to the proportion of table one, is then prepared by identical processing step.
It is specific the preparation method is as follows:
1) according to the base-material each component formula of each embodiment of table one, base-material is weighed, weighs electronic scale precision ± 1 gram；Match
Material total weight is 200g；
2) base-material is ground: ingredient being put into planetary mills ball grinder and is ground 4 hours, expect: ball: water ratio=3:1:1.3 is ground
Granularity D50=0.8-1.2 microns after mill, D90 is less than 2.0 microns；250 revs/min of revolving speed of grinding, lapping mode rotate forward 30 points
Then clock inverts 30 minutes；Mill is made using zirconia ball to be situated between, and using the good advantage of the wearability of zirconia ball, is reduced in formula
The incorporation of other impurities；
3) base-material is dried: the satisfactory slurry of granularity is put into stainless steel disc, is dried in evaporating moisture content in drying box,
200-250 DEG C of drying temperature selection, the time 5 hours, water content≤0.6% after drying；
4) base-material pulverizes and sieves: base-material crosses 40 meshes using electronic broken crusher machine after drying, and the purpose is to improve production
Efficiency；
5) base-material pre-burning crushes: smashed base-material powder being put into corundum-mullite sagger and carries out pre-burning；Pre-burning is selected
Na Bore batch-type furnace, 900 degree of temperature heat preservations, 5 hours progress synthesis in solid state cross 40 meshes using electronic broken crusher machine after synthesis；
6) finished product ingredient: weighing 100 grams of the base-material after pre-burning pulverizes and sieves, according to the corresponding additive group of each embodiment
Part and ratio carry out weighing addition, electronic scale precision: ± 0.01 gram；
7) finished product is ground: base-material and additive are put into planetary mills ball grinder, deionized water is added and forms finished product slurry, into
It row wet ball-milling 6 hours, 250 revs/min of revolving speed, rotates forward 30 minutes, then inverts 30 minutes；Material: ball: water ratio=3:1:1.3,
D50=0.8-1.2 microns；Mill is made using zirconia ball to be situated between, and using the good advantage of the wearability of zirconia ball, reduces its in formula
The doping of his impurity；
8) finished product slurry is dried: the satisfactory slurry of granularity being put into stainless steel disc, in evaporating moisture content in drying box
Drying；200 DEG C~250 DEG C of drying temperature selection, drying time 5 hours, water content≤0.6% after drying；
9) it crushes: the finished product block after drying being crossed into 40 meshes using electronic broken crusher machine, obtains finished product powder.In order to
Performance difference is avoided between batch, in multiple batches of processing, uniform packing is sold again after multiple batches of finished product powder is mixed.
In above-mentioned steps 5) base-material pre-burning crush in, calcined temperature is can control in actual production at 800 DEG C -900 DEG C
Between, soaking time was controlled at 2-5 hours.
In step 5) base-material pre-burning crushing and step 9), grinding and sieving crosses grit number general control in 40 mesh.
In the above embodiments, addition bismuth oxide promotes ferrite crystal grains growth, improves magnet as sintering aid
Consistency；Cobaltosic oxide is added, impedance value frequency characteristic is changed, improves impedance value under 40MHz, improves quality factor (Q
Value)；Molybdenum oxide is added, as fine grain agent, improves the sintered crystallization shape of ferrite powder after addition, makes the consistency of crystal grain
And uniformity is obviously improved.Manganese dioxide is added, and low 535 degree of fusing point using its, can reduce ferrite sintered temperature,
With sintering aid bismuth oxide compound action, it can improve and burn bring abnormal grain growth problem since simple bismuth oxide helps.Three oxygen
Change two lanthanums, as material common in microwave ceramic material, we inhibit crystal grain raw using the characteristic of its fusing point high (2315 degree)
It is long, improve the uniformity and consistency of ferrite sintered crystallization, improves device reliability.
Using the magnetic bead for the ferrite powder production that the present invention makes, 800 DEG C -900 DEG C of powder calcined temperature, finished product is burnt
Junction temperature is 900 DEG C, is realized low temperature co-fired.
Experiment is tested for the property to the ferrite powder that above-described embodiment is prepared.
Magnet ring is examined in production first: 10g dry powder is taken, 3%PVA is added and is granulated, mould specification Φ 20mm × Φ 10mm；Molding
Size: outer diameter × internal diameter × thickness=Φ 20mm × Φ 10mm × 3mm；Blank density: 4.0mm ± 0.1g/cm3；Automatic tabletting
Molding machine molding, briquetting pressure 10MPa；It examines magnet ring sintering temperature: 900 ± 10 DEG C, keeping the temperature 5 hours, the inspection of import ETH firing ring
It surveys, has subtracted heat preservation offset.
Table two, test method and test item.
The detection magnet ring of production is tested for the property according to the test method of table two and test item.Test data such as table
Three.
Table three examines magnet ring test data
By above data and each diagram it is found that electromagnetic performance parameter is all satisfied purpose electromagnetic performance requirement.And by number in table
According to it is found that the ratio by each ingredient of material of main part adjusts, the impedance value improved under powder magnet ring 40MHz is (corresponding to improve
Use impedance value of the powder production magnetic bead at 100MHz), design circle number is reduced, production efficiency is improved, reduces cost；Pass through
The application of the addition of additive, especially molybdenum oxide and lanthana reaches grain refinement effect, improves magnetic bead reliability.
Claims (5)
1. a kind of low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value, formula includes base-material and addition
Agent, wherein base-material, in mass ratio, Fe2O355.0~70.0%, NiO5.0~15.0%, ZnO15~25.0%, CuO3~
8%；Additive, in terms of base-material gross mass, Bi2O31.0~3.0%, Co3O40.1~1.0%, MoO30.05~0.3%,
MnO20.1-0.3%；La2O30.1-0.5%.
2. the preparation side of the low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value according to claim 1
Method, step include: 1) accurately to weigh according to the proportion of base-material each component；2) deionized water is added in the base-material dry powder prepared
It is stirred to form base-material slurry, D50=0.8-1.2 microns of granularity requirements, D90 is less than 2.0 microns；3) base-material of preparation is starched
Material drying, water content≤0.6% after drying；4) base-material pre-burning: by the base-material pre-burning after drying, 800 DEG C -900 of calcined temperature
DEG C, keep the temperature 2-5 hours；5) in terms of base-material quality, according to additive mass ratio, additive each component is weighed；6) by base after pre-burning
After material is mixed with additive, deionized water is added and is stirred, D50=0.8-1.2 microns of granularity requirements, D90 is micro- less than 2.0
Rice；7) finished product drying: water content≤0.6% after drying；8) it pulverizes and sieves to obtain finished product.
3. the preparation side of the low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value according to claim 2
Method, it is characterised in that the drying temperature 200-250 degree of the step 3) and step 7).
4. the preparation side of the low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value according to claim 2
Method, it is characterised in that step 2) and step 6) mixing and ball milling, material: ball: water ratio=3:1:1.3,250 revs/min of rotational speed of ball-mill,
Ball milling method rotates forward 30 minutes, then inverts 30 minutes.
5. the preparation side of the low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value according to claim 2
Method, it is characterised in that step 8) pulverizes and sieves mesh number as 40-80 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910307825.0A CN110041064A (en) | 2019-04-17 | 2019-04-17 | Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910307825.0A CN110041064A (en) | 2019-04-17 | 2019-04-17 | Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110041064A true CN110041064A (en) | 2019-07-23 |
Family
ID=67277564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910307825.0A Pending CN110041064A (en) | 2019-04-17 | 2019-04-17 | Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110041064A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078429A (en) * | 2021-03-12 | 2021-07-06 | 电子科技大学 | Quasi-planar composite substrate microstrip circulator |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966459A (en) * | 2006-10-13 | 2007-05-23 | 南京师范大学 | Superparamagnetic zinc ferrite nanomaterial and its preparation method |
| CN101183586A (en) * | 2007-10-08 | 2008-05-21 | 横店集团东磁股份有限公司 | High magnetic conductivity, low THD soft magnetic ferrite magnetic material and method for preparing the same |
| CN102690111A (en) * | 2012-04-23 | 2012-09-26 | 横店集团东磁股份有限公司 | Nickel-copper-zinc soft magnetic ferrite material for low temperature co-firing and preparation method thereof |
| CN103420669A (en) * | 2012-05-25 | 2013-12-04 | 比亚迪股份有限公司 | Nickel-zinc soft-magnetic ferrite and preparation method thereof |
| CN104193314A (en) * | 2014-08-14 | 2014-12-10 | 蕲春县蕊源电子有限公司 | High-permeability soft magnetic ferrite material and preparation method thereof |
| CN104446421A (en) * | 2014-12-19 | 2015-03-25 | 宝鸡烽火诺信科技有限公司 | High-magnetic conductivity nickel and zinc soft magnetic ferrite material and preparation method |
| JP2015091748A (en) * | 2013-10-04 | 2015-05-14 | Ｎｅｃトーキン株式会社 | Ferrite core and production method thereof |
| CN106396663A (en) * | 2016-08-29 | 2017-02-15 | 天长市中德电子有限公司 | Mn-Zn ferrite material with high conductivity |
| CN106653264A (en) * | 2016-11-28 | 2017-05-10 | 宁波科星材料科技有限公司 | Preparation method of samarium-cobalt-based composite magnetic material and samarium-cobalt-based composite magnetic material |
| CN109456050A (en) * | 2018-12-20 | 2019-03-12 | 横店集团东磁股份有限公司 | A kind of low temperature co-fired LTCC soft magnetism ZnNiCu Ferrite Material and preparation method thereof |
-
2019
- 2019-04-17 CN CN201910307825.0A patent/CN110041064A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966459A (en) * | 2006-10-13 | 2007-05-23 | 南京师范大学 | Superparamagnetic zinc ferrite nanomaterial and its preparation method |
| CN101183586A (en) * | 2007-10-08 | 2008-05-21 | 横店集团东磁股份有限公司 | High magnetic conductivity, low THD soft magnetic ferrite magnetic material and method for preparing the same |
| CN102690111A (en) * | 2012-04-23 | 2012-09-26 | 横店集团东磁股份有限公司 | Nickel-copper-zinc soft magnetic ferrite material for low temperature co-firing and preparation method thereof |
| CN103420669A (en) * | 2012-05-25 | 2013-12-04 | 比亚迪股份有限公司 | Nickel-zinc soft-magnetic ferrite and preparation method thereof |
| JP2015091748A (en) * | 2013-10-04 | 2015-05-14 | Ｎｅｃトーキン株式会社 | Ferrite core and production method thereof |
| CN104193314A (en) * | 2014-08-14 | 2014-12-10 | 蕲春县蕊源电子有限公司 | High-permeability soft magnetic ferrite material and preparation method thereof |
| CN104446421A (en) * | 2014-12-19 | 2015-03-25 | 宝鸡烽火诺信科技有限公司 | High-magnetic conductivity nickel and zinc soft magnetic ferrite material and preparation method |
| CN106396663A (en) * | 2016-08-29 | 2017-02-15 | 天长市中德电子有限公司 | Mn-Zn ferrite material with high conductivity |
| CN106653264A (en) * | 2016-11-28 | 2017-05-10 | 宁波科星材料科技有限公司 | Preparation method of samarium-cobalt-based composite magnetic material and samarium-cobalt-based composite magnetic material |
| CN109456050A (en) * | 2018-12-20 | 2019-03-12 | 横店集团东磁股份有限公司 | A kind of low temperature co-fired LTCC soft magnetism ZnNiCu Ferrite Material and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 关小蓉等: ""锰锌、镍锌铁氧体的研究现状及最新进展"", 《材料导报》 * |
| 夏德贵等: "《软磁铁氧体制造原理与技术》", 31 December 2010, 陕西出版集团 * |
| 朱德如等: ""镍锌铁氧体材料的特性、工艺与添加改性"", 《磁性材料及器件》 * |
| 苏桦等: ""Bi2O3-MoO3复合掺杂对NiCuZn铁氧体烧结特性和磁性能的影响"", 《磁性材料与器件》 * |
| 陈亚杰等: ""掺La2O3的镍锌铁氧体研究"", 《磁性材料关键工艺技术交流会文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078429A (en) * | 2021-03-12 | 2021-07-06 | 电子科技大学 | Quasi-planar composite substrate microstrip circulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101859622B (en) | Method for manufacturing intermediate-frequency low-loss MnZn ferrite magnetic core | |
| CN101640090B (en) | High performance soft magnetic ferrite materials doped with Ni-Zn series and preparation method thereof | |
| CN109867518B (en) | Garnet ferrite with high temperature stability and preparation method thereof | |
| CN101549993B (en) | Lithium ferrite material applied to C waveband phase shifter | |
| CN105330277B (en) | Negative tempperature coefficient thermistor raw material composition and application | |
| CN108863336B (en) | Nickel microwave ferrite substrate material and preparation method thereof | |
| CN107235711B (en) | Temperature-stable metaantimmonic acid magnesium lithium-based microwave medium composite ceramics and preparation method thereof | |
| CN113735573B (en) | Low-loss NiCuZn soft magnetic ferrite material for NFC and preparation method and application thereof | |
| CN112679204A (en) | High-saturation high-dielectric-constant low-linewidth microwave ferrite material and preparation method thereof | |
| CN105000877A (en) | High-quality-factor temperature-stabilization type microwave dielectric material and preparation method thereof | |
| CN109928753A (en) | A kind of low-k silicon substrate microwave dielectric ceramic materials and preparation method thereof | |
| CN110041064A (en) | Low temperature co-fired soft ferromagnetic powder of Stacked magnetic bead high impedance value and preparation method thereof | |
| CN115536367A (en) | High-resistance low-B-value thermistor ceramic body, preparation method and thermistor | |
| CN106083034A (en) | A kind of low-loss lithium magnesium titanium series microwave dielectric ceramic | |
| CN105272205A (en) | Low-temperature sintering zinc oxide varistor material and preparation method thereof | |
| CN104496450A (en) | Narrow-linewidth and low-loss gyromagnetic ferrite material and preparation method thereof | |
| CN112174653A (en) | Microwave dielectric ceramic material with high Qf and low dielectric constant and preparation method thereof | |
| CN110723977B (en) | With Cu2+Formation of CuAl in alumina porcelain2O4Method for preparing black alumina ceramic by using main colorant | |
| CN106348756A (en) | High-Q-value lithium-magnesium-niobium microwave dielectric ceramic | |
| CN105060888B (en) | A kind of stable niobic acid neodymium ceramics of alumina doped preparation low-loss | |
| CN106830933A (en) | A kind of thermally-stabilised high q-factor lithium magnesium niobium series microwave dielectric ceramic | |
| CN115745573A (en) | Preparation method of fine-grain IZO target material | |
| CN112679205B (en) | Z-type ferrite and preparation method thereof | |
| CN114702310A (en) | Low-loss spinel microwave ferrite material and preparation method thereof | |
| CN109970457A (en) | Lamination sheet type power inductor low temperature co-fired soft ferromagnetic powder 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190723 |