CN110128130A - Mn-Zn soft magnetic ferrite and its manufacturing process with high resistance saturated characteristic - Google Patents
Mn-Zn soft magnetic ferrite and its manufacturing process with high resistance saturated characteristic Download PDFInfo
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- CN110128130A CN110128130A CN201910369888.9A CN201910369888A CN110128130A CN 110128130 A CN110128130 A CN 110128130A CN 201910369888 A CN201910369888 A CN 201910369888A CN 110128130 A CN110128130 A CN 110128130A
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- microcomponent
- soft magnetic
- high resistance
- magnetic ferrite
- saturated characteristic
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 41
- 229920006395 saturated elastomer Polymers 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 45
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 20
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 19
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 17
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 35
- 239000011701 zinc Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 23
- 239000000843 powder Substances 0.000 claims description 20
- 238000000498 ball milling Methods 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000003595 mist Substances 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000011236 particulate material Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 5
- 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 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 239000011802 pulverized particle Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 5
- 238000010348 incorporation Methods 0.000 claims description 2
- 238000002242 deionisation method Methods 0.000 claims 2
- 230000004907 flux Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 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
- 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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- 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
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- 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
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- 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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
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Abstract
The invention discloses a kind of Mn-Zn soft magnetic ferrite and its manufacturing process with high resistance saturated characteristic, soft magnetic ferrite are made of main composition and microcomponent；Main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is (52.5-55.0): (36.0-41.0): (7.0-10.0mol)；Microcomponent includes three kinds or more CaCO3、Co3O4、SiO2、SnO2、ZrO2、Nb2O5、TiO2、V2O5、Ta2O5The combination of composition；CaCO3、Co3O4、SiO2、SnO2For A class microcomponent, A class microcomponent is the 0.05wt%-0.20wt% of principal component by weight；ZrO2、Nb2O5、TiO2、V2O5、Ta2O5For B class microcomponent, B class microcomponent is the 0.15wt%-0.90wt% of principal component by weight.The advantages that saturation flux density Bs characteristic with higher of the invention.
Description
Technical field
The invention belongs to Material Field, it is related to a kind of soft magnetic ferrite, more particularly to a kind of with height anti-saturation
The Mn-Zn soft magnetic ferrite and its manufacturing process of characteristic.
Background technique
Mn-Zn soft magnetic ferrite belongs to the major class in soft magnetic ferrite, is currently widely used for filter, inductor, opens
Close the electronic fields such as power transformer, power converter.Due to the requirement of the application of present electronic device, high power switch
The output power of power transformer is higher and higher, and big output power brings big output electric current, and the high current in coil can
Magnetic core can be will lead to and be in magnetic saturation state, so as to cause the decline of magnetic core magnetic conduction ability, most intuitive is exactly core inductance
The rapid decline of amount, the final working efficiency for influencing switching mode power supply transformer.Thus our Ferrite Material is proposed
The requirement of saturation flux density Bs with higher, so that material anti-saturation characteristic with higher, guarantees switch to greatest extent
The task performance of power transformer.
Summary of the invention
The present invention provides a kind of Mn-Zn soft magnetic ferrite and its manufacturing process with high resistance saturated characteristic, with gram
Take the defect of the prior art.
To achieve the above object, the present invention provides a kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic,
It is made of main composition and microcomponent；Main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is (52.5-55.0):
(36.0-41.0): (7.0-10.0mol)；Microcomponent includes three kinds or more CaCO3、Co3O4、SiO2、SnO2、ZrO2、Nb2O5、
TiO2、V2O5、Ta2O5The combination of composition；CaCO3、Co3O4、SiO2、SnO2For A class microcomponent, A class microcomponent is by weight
For the 0.05wt%-0.20wt% of principal component；ZrO2、Nb2O5、TiO2、V2O5、Ta2O5For B class microcomponent, B class microcomponent
By weight the 0.15wt%-0.90wt% for being principal component.
Further, the present invention provides a kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, can also have
There is such feature: where microcomponent includes at least two or more B class microcomponent.
The present invention also provides the manufacturing process of the above-mentioned Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, including
Following steps:
Step 1: weighing main composition Fe2O3, MnO and ZnO and microcomponent A, going for main composition gross mass 10% is added
The glued agent solution of ionized water and main composition gross mass 4%, the adhesive solution concentration are 6%, are mixed in strong mixed machine.
Step 2: the mixture that step 1 is obtained be put into vibrating ball-mill carry out vibration, then by vibration material flaking machine into
The processing of row roller sheet, obtains roller sheet material.
Step 3: the roller sheet material that step 2 obtains is carried out pre-burning with rotary kiln, burn-in time is 50-60 minutes, pre-burning
Temperature is 880-940 DEG C.
Step 4: the Preburning material that step 3 is obtained carries out coarse crushing by pulverizer.
Step 5: microcomponent B is added in the coarse powder particle that step 4 is obtained, going for coarse powder particle gross mass 38% is added
Ionized water, the glued agent solution of coarse powder particle gross mass 10%, coarse powder particle gross mass 4% dispersing agent carry out ball milling, the glue
Mixture solution concentration is 10%, and Ball-milling Time is 1.5-2.0 hours, and ball milling granularity is at 0.8-1.0 μm.
Step 6: the slurrying material that step 5 is handled well carries out mist projection granulating.
Step 7: the mist projection granulating particulate material of step 6 is added to 0.015% zinc stearate, it is sufficiently mixed with batch mixer
It closes, then slug press.
Step 8: step 7 blank after molding is discharged into pushed bat kiln sintering, high-temperature region temperature is set as 1200 DEG C, setting
Partial pressure of oxygen is 4-8% oxygen content, and sintering time is 5-6 hours, and then cooling obtains the manganese-zinc ferrite magnetic of highly resistance saturated characteristic
The heart.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, and in step 2, the vibration time is 30 minutes；When roller sheet, rolling thickness is maintained at
2-3mm。
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, and in step 3, rotary kiln tilt angles are set as 2.0 ° -3.0 °, revolving speed setting
Turn/min for 5-6.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, in step 4, pulverized particles partial size≤1mm of coarse crushing.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, and in step 5, ball milling granularity is at 0.8-1.0 μm.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, and in step 6, the particulate material of 40-180 mesh is made in mist projection granulating.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, and in step 7, incorporation time is 10 minutes.
Further, the present invention provides a kind of manufacture work of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Skill can also have the following features: wherein, in step 8, nitrogen atmosphere of the temperature-fall period in 0.001-0.003% oxygen content
Middle cooling.
The beneficial effects of the present invention are: the present invention provides a kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic
Material and its manufacturing process are combined by the meticulous allotment to microcomponent, and the Optimal improvements in manufacturing process, pass through pre-burning
Preceding addition microcomponent A material reaches microcomponent A material and participates in Ferrite method reaction in advance, and preferentially occupies in ferrite lattice
Vacancy, to guarantee the stability of abundant reaction and crystal structure when later period sintering, while having benefited from adding for microcomponent B
Add, be finally reached the densification of magnetic core, uses the saturation flux density Bs characteristic with higher of magnetic core made from the material, it is ensured that
Switching mode power supply transformer is less prone to saturated phenomenon in high power work environment, possesses good task performance.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, is made of main composition and microcomponent.
Main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is 52.5:36.0:7.0.
Microcomponent includes A class microcomponent and B class microcomponent.Wherein, A class microcomponent is CaCO3And Co3O4At
The combination divided, A class microcomponent is the 0.05wt% of principal component by weight.B class microcomponent is ZrO2、Nb2O5And TiO2At
The combination divided, B class microcomponent is the 0.15wt% of principal component by weight.
In the present embodiment, A class microcomponent can be CaCO3、Co3O4、SiO2、SnO2, B class microcomponent can be
ZrO2、Nb2O5、TiO2、V2O5、Ta2O5, microcomponent includes the combination of three kinds or more compositions in above-mentioned each composition.
The manufacturing process of the Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, comprising the following steps:
Step 1: weighing main composition Fe2O3, MnO and ZnO and microcomponent A, going for main composition gross mass 10% is added
The glued agent solution of ionized water and main composition gross mass 4%, the adhesive solution concentration are 6%, are mixed in strong mixed machine.
Step 2: the mixture that step 1 is obtained is put into the vibration that vibrating ball-mill carries out 30 minutes, then vibration material is used
Flaking machine carries out roller sheet processing, and rolling thickness is maintained at 2-3mm, obtains roller sheet material.
Step 3: roller sheet material that step 2 obtains is carried out pre-burning with rotary kiln, rotary kiln tilt angles be set as 2.0 °-
3.0 °, revolving speed is set as 5-6 and turns/min, and burn-in time is 50-60 minutes, and temperature is 880-940 DEG C.
Step 4: the Preburning material that step 3 is obtained carries out coarse crushing, pulverized particles partial size≤1mm by pulverizer.
Step 5: microcomponent B is added in the coarse powder particle that step 4 is obtained, going for coarse powder particle gross mass 38% is added
Ionized water, the glued agent solution of coarse powder particle gross mass 10%, coarse powder particle gross mass 4% dispersing agent carry out ball milling, the glue
Mixture solution concentration is 10%, and Ball-milling Time is 1.5-2.0 hours, and ball milling granularity is at 0.8-1.0 μm.
Step 6: the slurrying material that step 5 is handled well carries out mist projection granulating, the particle of 40-180 mesh is made in mist projection granulating
Material.
Step 7: the mist projection granulating particulate material of step 6 to be added to 0.015% zinc stearate, water is sufficiently mixed with batch mixer
It closes 10 minutes, then slug press.
Step 8: step 7 blank after molding is discharged into pushed bat kiln sintering, high-temperature region temperature is set as 1200 DEG C, setting
Partial pressure of oxygen is 4-8% oxygen content, and sintering time is 5-6 hours, when cooling in the nitrogen atmosphere of 0.001-0.003% oxygen content
Cooling obtains the manganese-zinc ferrite magnetic core of highly resistance saturated characteristic.
Embodiment 2
A kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, is made of main composition and microcomponent.
Main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is 55.0:41.0:10.0.
Microcomponent includes A class microcomponent and B class microcomponent.Wherein, A class microcomponent is SiO2And SnO2Ingredient
Combination, A class microcomponent is the 0.20wt% of principal component by weight.B class microcomponent is TiO2、V2O5And Ta2O5Ingredient
Combination, B class microcomponent is the 0.90wt% of principal component by weight.
In the present embodiment, A class microcomponent can be CaCO3、Co3O4、SiO2、SnO2, B class microcomponent can be
ZrO2、Nb2O5、TiO2、V2O5、Ta2O5, microcomponent includes the combination of three kinds or more compositions in above-mentioned each composition.
The manufacturing process of the Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, comprising the following steps:
Step 1: weighing main composition Fe2O3, MnO and ZnO and microcomponent A, main composition gross mass 10% is added
The glued agent solution of deionized water and main composition gross mass 4%, the adhesive solution concentration are 6%, are mixed in strong mixed machine
It closes.
Step 2: the mixture that step 1 is obtained is put into the vibration that vibrating ball-mill carries out 30 minutes, then vibration material is used
Flaking machine carries out roller sheet processing, and rolling thickness is maintained at 2-3mm, obtains roller sheet material.
Step 3: roller sheet material that step 2 obtains is carried out pre-burning with rotary kiln, rotary kiln tilt angles be set as 2.0 °-
3.0 °, revolving speed is set as 5-6 and turns/min, and burn-in time is 50-60 minutes, and temperature is 880-940 DEG C.
Step 4: the Preburning material that step 3 is obtained carries out coarse crushing, pulverized particles partial size≤1mm by pulverizer.
Step 5: microcomponent B is added in the coarse powder particle that step 4 is obtained, going for coarse powder particle gross mass 38% is added
Ionized water, the glued agent solution of coarse powder particle gross mass 10%, coarse powder particle gross mass 4% dispersing agent carry out ball milling, the glue
Mixture solution concentration is 10%, and Ball-milling Time is 1.5-2.0 hours, and ball milling granularity is at 0.8-1.0 μm.
Step 6: the slurrying material that step 5 is handled well carries out mist projection granulating, the particle of 40-180 mesh is made in mist projection granulating
Material.
Step 7: the mist projection granulating particulate material of step 6 to be added to 0.015% zinc stearate, it is sufficiently mixed with batch mixer
10 minutes, then slug press.
Step 8: step 7 blank after molding is discharged into pushed bat kiln sintering, high-temperature region temperature is set as 1200 DEG C, setting
Partial pressure of oxygen is 4-8% oxygen content, and sintering time is 5-6 hours, when cooling in the nitrogen atmosphere of 0.001-0.003% oxygen content
Cooling obtains the manganese-zinc ferrite magnetic core of highly resistance saturated characteristic.
Embodiment 3
A kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, is made of main composition and microcomponent.
Main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is 54.0:38.0:8.5.
Microcomponent includes A class microcomponent and B class microcomponent.Wherein, A class microcomponent is Co3O4、SiO2With
SnO2The combination of ingredient, A class microcomponent are the 0.12wt% of principal component by weight.B class microcomponent is Nb2O5、TiO2、
V2O5And Ta2O5The combination of ingredient, B class microcomponent are the 0.50wt% of principal component by weight.
In the present embodiment, A class microcomponent can be CaCO3、Co3O4、SiO2、SnO2, B class microcomponent can be
ZrO2、Nb2O5、TiO2、V2O5、Ta2O5, microcomponent includes the combination of three kinds or more compositions in above-mentioned each composition.
The manufacturing process of the Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, comprising the following steps:
Step 1: weighing main composition Fe2O3, MnO and ZnO and microcomponent A, main composition gross mass 10% is added
The glued agent solution of deionized water and main composition gross mass 4%, the adhesive solution concentration are 6%, are mixed in strong mixed machine
It closes.
Step 2: the mixture that step 1 is obtained is put into the vibration that vibrating ball-mill carries out 30 minutes, then vibration material is used
Flaking machine carries out roller sheet processing, and rolling thickness is maintained at 2-3mm, obtains roller sheet material.
Step 3: roller sheet material that step 2 obtains is carried out pre-burning with rotary kiln, rotary kiln tilt angles be set as 2.0 °-
3.0 °, revolving speed is set as 5-6 and turns/min, and burn-in time is 50-60 minutes, and temperature is 880-940 DEG C.
Step 4: the Preburning material that step 3 is obtained carries out coarse crushing, pulverized particles partial size≤1mm by pulverizer.
Step 5: microcomponent B is added in the coarse powder particle that step 4 is obtained, going for coarse powder particle gross mass 38% is added
Ionized water, the glued agent solution of coarse powder particle gross mass 10%, coarse powder particle gross mass 4% dispersing agent carry out ball milling, the glue
Mixture solution concentration is 10%, and Ball-milling Time is 1.5-2.0 hours, and ball milling granularity is at 0.8-1.0 μm.
Step 6: the slurrying material that step 5 is handled well carries out mist projection granulating, the particle of 40-180 mesh is made in mist projection granulating
Material.
Step 7: the mist projection granulating particulate material of step 6 to be added to 0.015% zinc stearate, water is sufficiently mixed with batch mixer
It closes 10 minutes, then slug press.
Step 8: step 7 blank after molding is discharged into pushed bat kiln sintering, high-temperature region temperature is set as 1200 DEG C, setting
Partial pressure of oxygen is 4-8% oxygen content, and sintering time is 5-6 hours, when cooling in the nitrogen atmosphere of 0.001-0.003% oxygen content
Cooling obtains the manganese-zinc ferrite magnetic core of highly resistance saturated characteristic.,
Performance detection is carried out to soft-magnetic ferrite core made from embodiment 1,2 and 3, measures its performance data such as following table institute
Show.
By the performance data table of comparisons it is found that soft-magnetic ferrite core of the invention saturation flux density Bs with higher is special
Property.
Claims (10)
1. a kind of Mn-Zn soft magnetic ferrite with high resistance saturated characteristic, it is characterised in that:
It is made of main composition and microcomponent；
The main composition is Fe2O3, MnO and ZnO, and its corresponding molar ratio is (52.5-55.0): (36.0-41.0): (7.0-
10.0mol)；
The microcomponent includes three kinds or more CaCO3、Co3O4、SiO2、SnO2、ZrO2、Nb2O5、TiO2、V2O5、Ta2O5Composition
Combination；
CaCO3、Co3O4、SiO2、SnO2For A class microcomponent, A class microcomponent is the 0.05wt%- of principal component by weight
0.20wt%；
ZrO2、Nb2O5、TiO2、V2O5、Ta2O5For B class microcomponent, B class microcomponent is principal component by weight
0.15wt%-0.90wt%.
2. the Mn-Zn soft magnetic ferrite according to claim 1 with high resistance saturated characteristic, it is characterised in that:
Wherein, the microcomponent includes at least two or more B class microcomponent.
3. the manufacturing process of the Mn-Zn soft magnetic ferrite with high resistance saturated characteristic as described in claim 1, special
Sign is:
The following steps are included:
Step 1: weighing main composition Fe2O3, MnO and ZnO and microcomponent A, the deionization of main composition gross mass 10% is added
The glued agent solution of water and main composition gross mass 4%, the adhesive solution concentration are 6%, are mixed in strong mixed machine；
Step 2: the mixture that step 1 is obtained, which is put into vibrating ball-mill, carries out vibration, then vibration material is rolled with flaking machine
Piece processing, obtains roller sheet material；
Step 3: the roller sheet material that step 2 obtains is carried out pre-burning with rotary kiln, burn-in time is 50-60 minutes, calcined temperature
It is 880-940 DEG C；
Step 4: the Preburning material that step 3 is obtained carries out coarse crushing by pulverizer；
Step 5: microcomponent B is added in the coarse powder particle that step 4 is obtained, the deionization of coarse powder particle gross mass 38% is added
Water, the glued agent solution of coarse powder particle gross mass 10%, coarse powder particle gross mass 4% dispersing agent carry out ball milling, the adhesive
Solution concentration is 10%, and Ball-milling Time is 1.5-2.0 hours, and ball milling granularity is at 0.8-1.0 μm；
Step 6: the slurrying material that step 5 is handled well carries out mist projection granulating；
Step 7: the mist projection granulating particulate material of step 6 to be added to 0.015% zinc stearate, it is sufficiently mixed with batch mixer, so
Slug press afterwards；
Step 8: step 7 blank after molding is discharged into pushed bat kiln sintering, high-temperature region temperature is set as 1200 DEG C, setting oxygen
Pressure is 4-8% oxygen content, and sintering time is 5-6 hours, and then cooling obtains the manganese-zinc ferrite magnetic core of highly resistance saturated characteristic.
4. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 2, the vibration time is 30 minutes；
When roller sheet, rolling thickness is maintained at 2-3mm.
5. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 3, rotary kiln tilt angles are set as 2.0 ° -3.0 °, and revolving speed is set as 5-6 and turns/min.
6. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 4, pulverized particles partial size≤1mm of coarse crushing.
7. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 5, ball milling granularity is at 0.8-1.0 μm.
8. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 6, the particulate material of 40-180 mesh is made in mist projection granulating.
9. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 7, incorporation time is 10 minutes.
10. the manufacturing process of the Mn-Zn soft magnetic ferrite according to claim 3 with high resistance saturated characteristic,
It is characterized in that:
Wherein, in step 8, temperature-fall period cools down in the nitrogen atmosphere of 0.001-0.003% oxygen content.
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