CN106348741A - Wide-temperature and wideband zinc-nickel soft magnetic ferrite material and preparation method thereof - Google Patents

Wide-temperature and wideband zinc-nickel soft magnetic ferrite material and preparation method thereof Download PDF

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CN106348741A
CN106348741A CN201610719434.6A CN201610719434A CN106348741A CN 106348741 A CN106348741 A CN 106348741A CN 201610719434 A CN201610719434 A CN 201610719434A CN 106348741 A CN106348741 A CN 106348741A
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oxide
soft magnetic
magnetic ferrite
weight
major ingredient
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王久如
王晓祥
沈建元
李丛俊
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TIANCHANG ZHONGDE ELECTRONICS CO Ltd
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TIANCHANG ZHONGDE ELECTRONICS CO Ltd
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Abstract

The invention disclsoes a wide-temperature and wideband zinc-nickel soft magnetic ferrite material. The wide-temperature and wideband zinc-nickel soft magnetic ferrite material is prepared from a main material and an auxiliary material at the weight ratio of 1 to (0.3 to 0.5), wherein the main material comprises: chromium oxide, zinc oxide, nickel carbonate, iron oxide, copper oxide, manganese carbonate and the balance of iron powder; by taking the weight of the main material as the basis, the auxiliary material comprises aluminum sesquioxide, vanadium oxide, zirconium oxide, tungsten trioxide, bismuth oxide, cobalt sesquioxide, a sintering auxiliary agent and a polyvinyl alcohol water solution. The invention further provides a preparation method of the wide-temperature and wideband zinc-nickel soft magnetic ferrite material. The zinc-nickel soft magnetic ferrite material prepared by the preparation method has wide-temperature and wideband properties.

Description

A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material and preparation method thereof
Technical field
The present invention relates to a kind of soft magnetic ferrite and preparation method thereof, more particularly, to a kind of broad temperature, broadband nickel zinc soft magnetism Ferrite Material and preparation method thereof.
Background technology
With the fast development of digital communication technology and Fibre Optical Communication Technology, traditional artificial traffic equipment is continuously updated Eliminate.In electronic circuit wide-band transformer, the pulse in the field such as ISDN(Integrated Service Digital Network), LAN, wide area network, background illumination becomes The high magnetic conductivity ferrite magnetic core of common mode filtering inductance in depressor and photovoltaic DC-to-AC converter, because transformator etc. is sent out towards miniaturization Exhibition, therefore requirements at the higher level are proposed to ferritic magnetic characteristic, particularly in the Current electronic information age, external environment various Electronic interferences are increasingly serious, need ferrite to have high initial permeability, high saturated magnetic induction, high-curie temperature, high resistant Resist and broadband properties.
The Curie temperature of soft magnetic ferrite of the prior art and frequency cannot meet the demand of prior art, therefore need badly Design a kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material to solve the problems of the prior art.
Content of the invention
For solving technical problem present in background technology, the present invention proposes a kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material Material and preparation method thereof, the Ni-Zn soft magnetic ferrite material preparing has the characteristic of broad temperature, broadband.
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1: (0.3-0.5) prepare, wherein, major ingredient is by mole inclusion: chromium oxide 51.15-54.45mol%, zinc oxide 21.2-24.8mol%, nickelous carbonate 19.5-21.5mol%, ferrum oxide 3.6-7.2mol%, copper oxide 0.5-1.5mol%, carbon Sour manganese 1.5-2.5mol%, balance of iron powder；On the basis of the weight of major ingredient, adjuvant includes by weight percentage: three oxidations two Aluminum 0.003-0.008%, vanadium oxide 0.03-0.06%, zirconium oxide 0.04-0.06%, Tungstic anhydride. 0.02-0.04%, oxidation Bismuth 0.05-0.15%, cobalt sesquioxide 0.15-0.25%, sintering aid 0.1-0.3%, polyvinyl alcohol water solution 0.04- 0.06%.
Preferably, sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide 1- by weight 3:2-5:3-6:2-5:4-8 mixes.
Preferably, the mass fraction of polyvinyl alcohol water solution is 0.5-0.8%.
Preferably, by major ingredient and adjuvant by weight 1:(0.35-0.45) prepare, wherein, Mole percent pressed by major ingredient Than inclusion: chromium oxide 52.15-53.45mol%, zinc oxide 22.2-23.8mol%, nickelous carbonate 20.0-21.0mol%, oxidation Ferrum 3.7-7.1mol%, copper oxide 0.8-1.2mol%, manganese carbonate 1.8-2.2mol%, balance of iron powder；Weight with major ingredient On the basis of, adjuvant includes by weight percentage: aluminium sesquioxide 0.004-0.007%, vanadium oxide 0.04-0.05%, zirconium oxide 0.045-0.055%, Tungstic anhydride. 0.025-0.035%, bismuth oxide 0.08-0.12%, cobalt sesquioxide 0.18-0.22%, Sintering aid 0.15-0.25%, polyvinyl alcohol water solution 0.045-0.055%, dispersant 0.06-0.08%.
Preferably, prepared by weight 1:0.4 by major ingredient and adjuvant, wherein, major ingredient is by mole inclusion: oxygen Change chromium 52.8mol%, zinc oxide 23.0mol%, nickelous carbonate 20.5mol%, ferrum oxide 5.45mol%, copper oxide 1.0mol%, Manganese carbonate 2.0mol%, balance of iron powder；On the basis of the weight of major ingredient, adjuvant includes by weight percentage: aluminium sesquioxide 0.0055%, vanadium oxide 0.045%, zirconium oxide 0.05%, Tungstic anhydride. 0.03%, bismuth oxide 0.10%, cobalt sesquioxide 0.20%, sintering aid 0.2%, polyvinyl alcohol water solution 0.05%, dispersant 0.07%.
A kind of preparation method of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, comprises the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibrating mill Middle vibromill 1-2h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three oxidations in material b Carry out waterproof pulverization after two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add the polyvinyl alcohol water solution of the 1.6-2.2% being equivalent to material c weight in material c, adopt Mist projection granulating, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1200-1300 DEG C, it is incubated 10-30min, is then cooled to 1150-1180 DEG C, be incubated 2-4h, then 1280-1350 DEG C of intensification, be incubated 2-4h, Then naturally cool to the soft magnetic ferrite that room temperature obtains high magnetoconductivity low temperature degree coefficient.
Preferably, in s2, calcined temperature is 700-800 DEG C, and burn-in time is 1-3h.
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, by major ingredient and adjuvant by being prepared into by a certain percentage Arrive, wherein, major ingredient includes chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate, balance of iron powder；With major ingredient On the basis of weight, adjuvant includes aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, cobalt sesquioxide, sintering help Agent and polyvinyl alcohol water solution.Chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibration Vibromill in grinding machine, then carries out pre-burning, be subsequently added into aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three Carry out waterproof pulverization after aoxidizing two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent, be subsequently added into polyethylene Alcohol-water solution carries out mist projection granulating, is pressed into blank, is finally sintered, and is cooled to the wide temperature width that room temperature obtains the present invention Frequency Ni-Zn soft magnetic ferrite material.The Ni-Zn soft magnetic ferrite material that the present invention prepares has the characteristic of broad temperature, broadband.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail it should be appreciated that embodiment is served only for this is described Bright, rather than be used for limiting the invention, any modification made on the basis of the present invention, equivalent etc. are all at this In bright protection domain.
Embodiment 1
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1:0.4 Prepare, wherein, major ingredient is by mole inclusion: chromium oxide 52.8mol%, zinc oxide 23.0mol%, nickelous carbonate 20.5mol%, ferrum oxide 5.45mol%, copper oxide 1.0mol%, manganese carbonate 2.0mol%, balance of iron powder；Weight with major ingredient On the basis of amount, adjuvant includes by weight percentage: aluminium sesquioxide 0.0055%, vanadium oxide 0.045%, zirconium oxide 0.05%, Tungstic anhydride. 0.03%, bismuth oxide 0.10%, cobalt sesquioxide 0.20%, sintering aid 0.2%, polyvinyl alcohol water solution 0.05%, dispersant 0.07%.
Sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide by weight 2:3.5:4.5: 3.5:6 mixing.
Embodiment 2
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1:0.3 Prepare, wherein, major ingredient is by mole inclusion: chromium oxide 51.15mol%, zinc oxide 24.8mol%, nickelous carbonate 19.5mol%, ferrum oxide 7.2mol%, copper oxide 0.5mol%, manganese carbonate 2.5mol%, balance of iron powder；Weight with major ingredient On the basis of amount, adjuvant includes by weight percentage: aluminium sesquioxide 0.003%, vanadium oxide 0.06%, zirconium oxide 0.04%, and three Tungsten oxide 0.04%, bismuth oxide 0.05%, cobalt sesquioxide 0.25%, sintering aid 0.1%, mass fraction be 0.8% poly- Vinyl alcohol aqueous solution 0.04%.
Sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide by weight 1:5:3:5:4 Mix.
A kind of preparation method of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, comprises the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibrating mill Middle vibromill 1h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b, calcined temperature is 800 DEG C, burn-in time is 1h；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three oxidations in material b Carry out waterproof pulverization after two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add be equivalent to material c weight 2.2% polyvinyl alcohol water solution in material c, using spraying Pelletize, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1200 DEG C, insulation 30min, is then cooled to 1150 DEG C, is incubated 4h, then heats up 1280 DEG C, is incubated 4h, then naturally cools to room temperature and obtain height The soft magnetic ferrite of magnetoconductivity low temperature degree coefficient.
Embodiment 3
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1:0.5 Prepare, wherein, major ingredient is by mole inclusion: chromium oxide 54.45mol%, zinc oxide 21.2mol%, nickelous carbonate 21.5mol%, ferrum oxide 3.6mol%, copper oxide 1.5mol%, manganese carbonate 1.5mol%, balance of iron powder；Weight with major ingredient On the basis of amount, adjuvant includes by weight percentage: aluminium sesquioxide 0.008%, vanadium oxide 0.03%, zirconium oxide 0.06%, and three Tungsten oxide 0.02%, bismuth oxide 0.15%, cobalt sesquioxide 0.15%, sintering aid 0.3%, mass fraction be 0.5% poly- Vinyl alcohol aqueous solution 0.06%.
Sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide by weight 3:2:6:2:8 Mix.
A kind of preparation method of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, comprises the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibrating mill Middle vibromill 2h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b, calcined temperature is 700 DEG C, burn-in time is 3h；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three oxidations in material b Carry out waterproof pulverization after two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add be equivalent to material c weight 1.6% polyvinyl alcohol water solution in material c, using spraying Pelletize, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1300 DEG C, insulation 10min, is then cooled to 1180 DEG C, is incubated 2h, then heats up 1350 DEG C, is incubated 2h, then naturally cools to room temperature and obtain height The soft magnetic ferrite of magnetoconductivity low temperature degree coefficient.
Embodiment 4
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1:0.35 Prepare, wherein, major ingredient is by mole inclusion: chromium oxide 52.15mol%, zinc oxide 23.8mol%, nickelous carbonate 20.0mol%, ferrum oxide 7.1mol%, copper oxide 0.8mol%, manganese carbonate 2.2mol%, balance of iron powder；Weight with major ingredient On the basis of amount, adjuvant includes by weight percentage: aluminium sesquioxide 0.004%, vanadium oxide 0.05%, zirconium oxide 0.045%, and three Tungsten oxide 0.035%, bismuth oxide 0.08%, cobalt sesquioxide 0.22%, sintering aid 0.15%, polyvinyl alcohol water solution 0.055%, dispersant 0.06%.
Sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide by weight 1.5:4:4:4: 5 mix.
A kind of preparation method of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, comprises the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibrating mill Middle vibromill 1.2h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b, calcined temperature is 780 DEG C, burn-in time is 1.5h；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three oxidations in material b Carry out waterproof pulverization after two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add be equivalent to material c weight 2.1% polyvinyl alcohol water solution in material c, using spraying Pelletize, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1220 DEG C, insulation 28min, is then cooled to 1160 DEG C, is incubated 3.5h, then heats up 1290 DEG C, is incubated 3.5h, then naturally cools to room temperature and obtain Soft magnetic ferrite to high magnetoconductivity low temperature degree coefficient.
Embodiment 5
A kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material proposed by the present invention, by major ingredient and adjuvant by weight 1:0.45 Prepare, wherein, major ingredient is by mole inclusion: chromium oxide 53.45mol%, zinc oxide 22.2mol%, nickelous carbonate 21.0mol%, ferrum oxide 3.7mol%, copper oxide 1.2mol%, manganese carbonate 1.8mol%, balance of iron powder；Weight with major ingredient On the basis of amount, adjuvant includes by weight percentage: aluminium sesquioxide 0.007%, vanadium oxide 0.04%, zirconium oxide 0.055%, and three Tungsten oxide 0.025%, bismuth oxide 0.12%, cobalt sesquioxide 0.18%, sintering aid 0.25%, polyvinyl alcohol water solution 0.045%, dispersant 0.08%.
Sintering aid is by lithium oxide, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide by weight 2.5:3:5:3: 7 mix.
A kind of preparation method of broad temperature, broadband Ni-Zn soft magnetic ferrite material of the present invention, comprises the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put into vibrating mill Middle vibromill 1.8h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b, calcined temperature is 720 DEG C, burn-in time is 2.5h；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, three oxidations in material b Carry out waterproof pulverization after two cobalts and sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add be equivalent to material c weight 1.7% polyvinyl alcohol water solution in material c, using spraying Pelletize, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1280 DEG C, insulation 12min, is then cooled to 1170 DEG C, is incubated 2.5h, then heats up 1340 DEG C, is incubated 2.5h, then naturally cools to room temperature and obtain Soft magnetic ferrite to high magnetoconductivity low temperature degree coefficient.
Performance test is carried out to the broad temperature, broadband Ni-Zn soft magnetic ferrite material obtaining in embodiment 1- embodiment 5, obtains Characteristic as shown in table 1.
Table 1:
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.

Claims (7)

1. a kind of broad temperature, broadband Ni-Zn soft magnetic ferrite material is it is characterised in that by major ingredient and adjuvant by weight 1:(0.3- 0.5) prepare, wherein, major ingredient is by mole inclusion: chromium oxide 51.15-54.45mol%, zinc oxide 21.2- 24.8mol%, nickelous carbonate 19.5-21.5mol%, ferrum oxide 3.6-7.2mol%, copper oxide 0.5-1.5mol%, manganese carbonate 1.5-2.5mol%, balance of iron powder；On the basis of the weight of major ingredient, adjuvant includes by weight percentage: aluminium sesquioxide 0.003-0.008%, vanadium oxide 0.03-0.06%, zirconium oxide 0.04-0.06%, Tungstic anhydride. 0.02-0.04%, bismuth oxide 0.05-0.15%, cobalt sesquioxide 0.15-0.25%, sintering aid 0.1-0.3%, polyvinyl alcohol water solution 0.04- 0.06%.
2. broad temperature, broadband Ni-Zn soft magnetic ferrite material according to claim 1 is it is characterised in that sintering aid is by aoxidizing Lithium, lead oxide, Vanadium sesquioxide, stannum oxide and molybdenum trioxide mix by weight 1-3:2-5:3-6:2-5:4-8.
3. broad temperature, broadband Ni-Zn soft magnetic ferrite material according to claim 1 and 2 is it is characterised in that polyvinyl alcohol water The mass fraction of solution is 0.5-0.8%.
4. the broad temperature, broadband Ni-Zn soft magnetic ferrite material according to any one of claim 1-3 is it is characterised in that by major ingredient With adjuvant by weight 1:(0.35-0.45) prepare, wherein, major ingredient is by mole inclusion: chromium oxide 52.15- 53.45mol%, zinc oxide 22.2-23.8mol%, nickelous carbonate 20.0-21.0mol%, ferrum oxide 3.7-7.1mol%, oxidation Copper 0.8-1.2mol%, manganese carbonate 1.8-2.2mol%, balance of iron powder；On the basis of the weight of major ingredient, adjuvant by weight hundred Divide than inclusion: aluminium sesquioxide 0.004-0.007%, vanadium oxide 0.04-0.05%, zirconium oxide 0.045-0.055%, three oxidations Tungsten 0.025-0.035%, bismuth oxide 0.08-0.12%, cobalt sesquioxide 0.18-0.22%, sintering aid 0.15-0.25%, Polyvinyl alcohol water solution 0.045-0.055%, dispersant 0.06-0.08%.
5. the broad temperature, broadband Ni-Zn soft magnetic ferrite material according to any one of claim 1-4 is it is characterised in that by major ingredient Prepare by weight 1:0.4 with adjuvant, wherein, major ingredient is by mole inclusion: chromium oxide 52.8mol%, zinc oxide 23.0mol%, nickelous carbonate 20.5mol%, ferrum oxide 5.45mol%, copper oxide 1.0mol%, manganese carbonate 2.0mol%, surplus For iron powder；On the basis of the weight of major ingredient, adjuvant includes by weight percentage: aluminium sesquioxide 0.0055%, vanadium oxide 0.045%, zirconium oxide 0.05%, Tungstic anhydride. 0.03%, bismuth oxide 0.10%, cobalt sesquioxide 0.20%, sintering aid 0.2%, polyvinyl alcohol water solution 0.05%, dispersant 0.07%.
6. the preparation method of the broad temperature, broadband Ni-Zn soft magnetic ferrite material described in a kind of any one according to claim 1-5, its It is characterised by, comprise the steps:
S1, mixing: chromium oxide, zinc oxide, nickelous carbonate, ferrum oxide, copper oxide, manganese carbonate and iron powder are put in vibrating mill and shakes Dynamic mill 1-2h, makes dispensing be sufficiently mixed and obtains material a；
S2, pre-burning: material a is carried out in pushed bat kiln pre-burning and obtain material b；
S3, pulverizing: add aluminium sesquioxide, vanadium oxide, zirconium oxide, Tungstic anhydride., bismuth oxide, cobalt sesquioxide in material b Carry out waterproof pulverization with after sintering aid, be subsequently adding zinc stearate and Composite sintering agent mix homogeneously obtains material c；
S4, pelletize: add the polyvinyl alcohol water solution of the 1.6-2.2% being equivalent to material c weight in material c, using spraying Pelletize, obtains particulate material；
S5, compacting: the particulate material obtaining in s4 is obtained blank using powder former compacting；
S6, sintering: blank is put in resistance furnace and is sintered, sintering processes include: be warming up to 1200-1300 DEG C, protect Warm 10-30min, is then cooled to 1150-1180 DEG C, is incubated 2-4h, then 1280-1350 DEG C of intensification, is incubated 2-4h, then certainly So it is cooled to the soft magnetic ferrite that room temperature obtains high magnetoconductivity low temperature degree coefficient.
7. the broad temperature, broadband Ni-Zn soft magnetic ferrite material according to any one of claim 1-4 is it is characterised in that in s2, Calcined temperature is 700-800 DEG C, and burn-in time is 1-3h.
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CN108314440B (en) * 2018-01-22 2020-12-22 天通控股股份有限公司 Wide-frequency wide-temperature low-temperature-factor high-strength nickel-zinc ferrite and preparation method thereof
CN112408970A (en) * 2020-11-25 2021-02-26 南通冠优达磁业有限公司 High-frequency wide-temperature low-loss soft magnetic ferrite material and preparation method thereof
CN112408970B (en) * 2020-11-25 2022-07-26 南通冠优达磁业股份有限公司 High-frequency wide-temperature low-loss soft magnetic ferrite material and preparation method thereof

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