CN109694246A - A kind of ultra-high frequency inhales wave filtering manganese-zinc ferrite and preparation method thereof - Google Patents
A kind of ultra-high frequency inhales wave filtering manganese-zinc ferrite and preparation method thereof Download PDFInfo
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- CN109694246A CN109694246A CN201910060447.0A CN201910060447A CN109694246A CN 109694246 A CN109694246 A CN 109694246A CN 201910060447 A CN201910060447 A CN 201910060447A CN 109694246 A CN109694246 A CN 109694246A
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Abstract
The invention discloses a kind of ultra-high frequencies to inhale wave filtering manganese-zinc ferrite and preparation method thereof, and the manganese-zinc ferrite includes: principal component and auxiliary element, and the principal component includes the component of following molar content: the Fe of 52.0mol%~54.5mol%2O3, 11.5mol%~16.5mol% ZnO, remaining is MnO；The auxiliary element includes CaCO3、Bi2O3、Nb2O5、Co2O3、MoO3, three kinds or more in CuO, and the total weight of the auxiliary element is 0.15wt%~0.5wt% of the principal component total weight；Preparation method includes: ingredient mixing, pre-burning, crushing, mist projection granulating, blank molding, sintering.By the above-mentioned means, the present invention makes its material have high magnetic permeability, high-curie temperature and mechanical strength, may conform to vehicle electronics product environmental suitability design standard by special doping process and sintering process curve.
Description
Technical field
The present invention relates to manganese-zinc ferrite field, more particularly to a kind of ultra-high frequency inhale wave filtering manganese-zinc ferrite and its
Preparation method.
Background technique
Currently, the development trend of electronic component is miniaturization, lightweight.High magnetic permeability type MnZn ferrite material is initial
Magnetic conductivity is high, and loss is small, and Applicable temperature range is wide and inductance high impedance is high under high-frequency use condition, can be obviously improved filtering
Device performance is conducive to electronic component miniaturization, lightweight, meets the development trend of electronic component.Meanwhile using high frequency height
When performance MnZn ferrite material, the loss of component Q value height is small, so inhaling wave to ultra-high frequency both at home and abroad filters Ferrite Material
Demand is big, and development potentiality is huge.However existing ferrite magnetic conductance is not high enough, Curie temperature is low, magnetic patch bad mechanical strength,
It is not able to satisfy vehicle electronics product environmental suitability design standard.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of ultra-high frequencies to inhale wave filtering manganese-zinc ferrite and its preparation
Method, be able to solve existing Ferrite Material magnetic conductivity, Curie temperature and the magnetic patch in terms of existing for deficiency
Place.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of ultra-high frequency suction wave filter is provided
Wave manganese-zinc ferrite, comprising: principal component and auxiliary element, the principal component include the component of following molar content: 52 .0
The Fe of the .5mol% of mol%~542O3, the .5mol% of 11 .5mol%~16 ZnO, remaining is MnO；The auxiliary element packet
Include CaCO3、Bi2O3、Nb2O5、Co2O3、MoO3, three kinds or more in CuO, and the total weight of the auxiliary element is institute
State the .5wt% of 0 .15wt%~0 of principal component total weight.
In a preferred embodiment of the present invention, the initial permeability of the manganese-zinc ferrite is 6000 ± 25%；Curie
Temperature >=150 DEG C；1MHz T25-15-12 standard magnet ring detects 100 Ω of 2TS Z >；The detection of 5MHz T25-15-12 standard magnet ring
100 Ω of 2TS Z >.
In order to solve the above technical problems, another technical solution used in the present invention is: providing a kind of ultra-high frequency suction wave
The preparation method for filtering manganese-zinc ferrite, includes the following steps:
(1) ingredient mixes: weighing the principal component of formula ratio；Take 60wt%~100wt% of the principal component total weight go from
Sub- water mixes in sand mill, and after adding the PVA aqueous solution that concentration is 3 ‰, mist projection granulating obtains particle powder；
(2) pre-burning: particle powder obtained by step (1) is transferred in rotary kiln, is carried out pre-burning and is obtained Preburning material；
(3) it crushes: the resulting Preburning material of step (2) being subjected to coarse crushing, is then mixed again with the auxiliary element of formula ratio laggard
Row sand milling is finely divided to obtain slurry；
(4) mist projection granulating: the resulting slurry of step (3) is subjected to mist projection granulating, the addition .02wt% of 0 .01wt%~0 is stearic
Sour zinc, whole grain obtain particle mixed powder；
(5) blank forms: being pressed with the resulting particle mixed powder of step (4) as T25*15*7 .5 standard sample
Green compact；
(6) it is sintered: being put into bell-type furnace after the sample green compact of step (5) compression moulding are arranged, carried out using balance oxygen atmosphere
Sintering obtains ultra-high frequency and inhales wave filtering manganese-zinc ferrite.
In a preferred embodiment of the present invention, calcined temperature described in step (2) is 850 DEG C~1050 DEG C, revolution
Kiln revolving speed is 3~6r/min, 400~600kg/h of load.
In a preferred embodiment of the present invention, the crushing in step (3) includes coarse crushing and finely divided, first by step
(2) resulting Preburning material is placed in vibrating ball-mill and carries out vibration coarse crushing, then is placed in sand mill and mixes with the auxiliary element of formula ratio
Conjunction obtains mixture, and the deionized water of 50wt%~100wt% of mixture total weight is then added, and carries out that finely divided obtain is sanded
To slurry.
In a preferred embodiment of the present invention, the time of the vibration coarse crushing is 30 ~ 40min, the sand milling fine powder
The broken time is 60min~100min.
In a preferred embodiment of the present invention, the pressed density of sample green compact is 2 .95-3 .15g/ in step (5)
cm3。
In a preferred embodiment of the present invention, sintering temperature described in step (6) is 1360 DEG C~1400 DEG C.
The beneficial effects of the present invention are: the present invention makes its material by special doping process and sintering process curve
Initial permeability is 6000 ± 25%, and magnetic conductivity room temperature is up to 6600 ± 25%, Curie temperature >=150 DEG C；1MHz T25-15-12 mark
Quasi- magnet ring detects 100 Ω of 2TS Z >；5MHz T25-15-12 standard magnet ring detects 100 Ω of 2TS Z >；
Sintering process is sintered using balance oxygen atmosphere, is fully considered energy conservation and is reduced magnetic hysteresis, improves high-frequency inductor；By excellent
Change the formula of principal component and auxiliary element, and increases the auxiliary element amount of mixing to improve magnetic patch mechanical strength, while reducing particle
Material activity improves product strength after sintering indirectly, product is made to may conform to vehicle electronics product environmental suitability design standard.
Specific embodiment
The preferred embodiments of the present invention will be described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
The embodiment of the present invention includes:
Embodiment 1:
A kind of ultra-high frequency suction wave filtering manganese-zinc ferrite, comprising: principal component and auxiliary element, the principal component include rubbing as follows
The component of your percentage composition: 52 .0 mol%Fe2O3, the ZnO of 12 .5mol%, 35 .5mol% MnO；The auxiliary element
For CaCO3、Bi2O3、Nb2O5、Co2O3Mixture, and the total weight of the auxiliary element be the principal component total weight 0
.25wt%.
Above-mentioned ultra-high frequency inhales the preparation method of wave filtering manganese-zinc ferrite, includes the following steps:
(1) ingredient mixes: weighing the principal component of above-mentioned formula ratio；Take the deionized water of the 80wt% of the principal component total weight in
It is mixed in sand mill, after adding the PVA aqueous solution that concentration is 3 ‰, mist projection granulating obtains particle powder；
(2) pre-burning: particle powder obtained by step (1) is transferred in rotary kiln, is carried out pre-burning and is obtained Preburning material；Wherein, pre-burning temperature
Degree is 850 DEG C, and rotary kiln revolving speed is 3r/min, load 400kg/h；
(3) it crushes: step (2) resulting Preburning material being placed in vibrating ball-mill and carries out vibration coarse crushing 40min, then is placed in sand mill
And it is mixed to get mixture with the auxiliary element of above-mentioned formula ratio, the deionization of the 70wt% of mixture total weight is then added
Water carries out obtaining slurry after finely divided 60min is sanded；
(4) mist projection granulating: the resulting slurry of step (3) is subjected to mist projection granulating, adds the zinc stearate of 0 .01wt%, whole grain
Obtain particle mixed powder；
(5) blank forms: being pressed with the resulting particle mixed powder of step (4) as T25*15*7 .5 standard sample
Green compact, pressed density are 2 .95g/cm3；
(6) it is sintered: being put into bell-type furnace after the sample green compact of step (5) compression moulding are arranged, carried out using balance oxygen atmosphere
Sintering, sintering temperature are controlled at 1360 DEG C, by equilibrium oxygen partial pres-sure formula LogPO2=-A/T+B, T are absolute temperature, determine that oxygen contains
Amount: A value 12000~22000, B value 10~15 finally obtain ultra-high frequency and inhale wave filtering manganese-zinc ferrite.
Embodiment 2:
A kind of ultra-high frequency suction wave filtering manganese-zinc ferrite, comprising: principal component and auxiliary element, the principal component include rubbing as follows
The component of your percentage composition: 54 .0 mol%Fe2O3, the ZnO of 14 .5mol%, 31 .5mol% MnO；The auxiliary element
For CaCO3、Bi2O3、Nb2O5、Co2O3、MoO3, CuO mixture, and the total weight of the auxiliary element be the principal component it is total
0 .5wt% of weight.
Above-mentioned ultra-high frequency inhales the preparation method of wave filtering manganese-zinc ferrite, includes the following steps:
(1) ingredient mixes: weighing the principal component of above-mentioned formula ratio；Take the deionized water of the 90wt% of the principal component total weight in
It is mixed in sand mill, after adding the PVA aqueous solution that concentration is 3 ‰, mist projection granulating obtains particle powder；
(2) pre-burning: particle powder obtained by step (1) is transferred in rotary kiln, is carried out pre-burning and is obtained Preburning material；Wherein, pre-burning temperature
Degree is 1000 DEG C, and rotary kiln revolving speed is 6r/min, load 600kg/h；
(3) it crushes: step (2) resulting Preburning material being placed in vibrating ball-mill and carries out vibration coarse crushing 30min, then is placed in sand mill
And it is mixed to get mixture with the auxiliary element of above-mentioned formula ratio, the deionization of the 80wt% of mixture total weight is then added
Water carries out obtaining slurry after finely divided 80min is sanded；
(4) mist projection granulating: the resulting slurry of step (3) is subjected to mist projection granulating, adds the zinc stearate of 0 .02wt%, whole grain
Obtain particle mixed powder；
(5) blank forms: being pressed with the resulting particle mixed powder of step (4) as T25*15*7 .5 standard sample
Green compact, pressed density 3.15g/cm3；
(6) it is sintered: being put into bell-type furnace after the sample green compact of step (5) compression moulding are arranged, carried out using balance oxygen atmosphere
Sintering, sintering temperature are controlled at 1400 DEG C, by equilibrium oxygen partial pres-sure formula LogPO2=-A/T+B, T are absolute temperature, determine that oxygen contains
Amount: A value 12000~22000, B value 10~15 finally obtain ultra-high frequency and inhale wave filtering manganese-zinc ferrite.
The initial permeability that ultra-high frequency obtained by the above method inhales wave filtering manganese-zinc ferrite is 6000 ± 25%, magnetic conductance
Rate room temperature is up to 6600 ± 25%；Curie temperature >=150 DEG C；1MHz T25-15-12 standard magnet ring detects 100 Ω of 2TS Z >；5MHz
T25-15-12 standard magnet ring detects 100 Ω of 2TS Z >.
Manganese-zinc ferrite of the present invention is made its permeability height, is occupied by special doping process and sintering process curve
In temperature it is high, magnetic patch intensity is high.Sintering process is sintered using balance oxygen atmosphere, and sintering temperature is 1360 DEG C~1400 DEG C,
It fully considers energy conservation and reduces magnetic hysteresis, improves high-frequency inductor；It is simultaneous simultaneously by equilibrium oxygen partial pres-sure formula in the setting of atmosphere curve
Main formula and doping in this material are cared for, reaches and improves high-frequency inductor, TC, reduces the purpose of product temperature coefficient.It is led by optimization
The formula of ingredient and auxiliary element, and increase the auxiliary element amount of mixing to improve magnetic patch mechanical strength, while it is living to reduce particulate material
Property, product strength after sintering is improved indirectly, and product is made to may conform to vehicle electronics product environmental suitability design standard.
The present invention can be mass high-frequency and inhale wave filtering material manganese-zinc ferrite, is used for common mode inductance, can be widely applied
In vehicle electric field, domain of communication equipment.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (8)
1. a kind of ultra-high frequency, which inhales wave, filters manganese-zinc ferrite, which is characterized in that the manganese-zinc ferrite includes: principal component and auxiliary
Co-ingredients, the principal component include the component of following molar content: the Fe of 52 .5mol% of .0 mol%~542O3、11
.5mol%~16 ZnO of .5mol%, remaining is MnO；The auxiliary element includes CaCO3、Bi2O3、Nb2O5、Co2O3、MoO3、
Three kinds or more in CuO, and the total weight of the auxiliary element is 0 .15wt%~0 of the principal component total weight
.5wt%.
2. ultra-high frequency according to claim 1, which inhales wave, filters manganese-zinc ferrite, which is characterized in that the manganese-zinc ferrite
Initial permeability be 6000 ± 25%；Curie temperature >=150 DEG C；1MHz T25-15-12 standard magnet ring detects 2TS Z > 100
Ω；5MHz T25-15-12 standard magnet ring detects 100 Ω of 2TS Z >.
3. a kind of ultra-high frequency as claimed in claim 1 or 2 inhales the preparation method of wave filtering manganese-zinc ferrite, feature exists
In including the following steps:
(1) ingredient mixes: weighing the principal component of formula ratio；Take 60wt%~100wt% of the principal component total weight go from
Sub- water mixes in sand mill, and after adding the PVA aqueous solution that concentration is 3 ‰, mist projection granulating obtains particle powder；
(2) pre-burning: particle powder obtained by step (1) is transferred in rotary kiln, is carried out pre-burning and is obtained Preburning material；
(3) it crushes: the resulting Preburning material of step (2) being subjected to coarse crushing, is then mixed again with the auxiliary element of formula ratio laggard
Row sand milling is finely divided to obtain slurry；
(4) mist projection granulating: the resulting slurry of step (3) is subjected to mist projection granulating, the addition .02wt% of 0 .01wt%~0 is stearic
Sour zinc, whole grain obtain particle mixed powder；
(5) blank forms: being pressed with the resulting particle mixed powder of step (4) as T25*15*7 .5 standard sample
Green compact；
(6) it is sintered: being put into bell-type furnace after the sample green compact of step (5) compression moulding are arranged, carried out using balance oxygen atmosphere
Sintering obtains ultra-high frequency and inhales wave filtering manganese-zinc ferrite.
4. the preparation method that ultra-high frequency according to claim 3 inhales wave filtering manganese-zinc ferrite, which is characterized in that step
(2) calcined temperature described in is 850 DEG C~1050 DEG C, and rotary kiln revolving speed is 3~6r/min, 400~600kg/h of load.
5. the preparation method that ultra-high frequency according to claim 3 inhales wave filtering manganese-zinc ferrite, which is characterized in that step
(3) crushing in includes coarse crushing and finely divided, and step (2) resulting Preburning material is placed in vibrating ball-mill first and carries out vibration coarse powder
It is broken, then be placed in sand mill and be mixed to get mixture with the auxiliary element of formula ratio, mixture total weight is then added
The deionized water of 50wt%~100wt% be sanded finely divided obtaining slurry.
6. the preparation method that ultra-high frequency according to claim 5 inhales wave filtering manganese-zinc ferrite, which is characterized in that described
The time of vibration coarse crushing is 30 ~ 40min, described that the finely divided time is sanded as 60min~100min.
7. the preparation method that ultra-high frequency according to claim 3 inhales wave filtering manganese-zinc ferrite, which is characterized in that step
(5) pressed density of sample green compact is 2 .95-3 .15g/cm in3。
8. the preparation method that ultra-high frequency according to claim 3 inhales wave filtering manganese-zinc ferrite, which is characterized in that step
(6) sintering temperature described in is controlled at 1360 DEG C~1400 DEG C.
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