CN106587978A - Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof - Google Patents

Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof Download PDF

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Publication number
CN106587978A
CN106587978A CN201611161674.5A CN201611161674A CN106587978A CN 106587978 A CN106587978 A CN 106587978A CN 201611161674 A CN201611161674 A CN 201611161674A CN 106587978 A CN106587978 A CN 106587978A
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powder
flaky
powder body
absorbing material
preparation
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林营
刘潇
戴菁菁
杨海波
韩宁
王幸
孙雨佳
高淑雅
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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    • 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
    • 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
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere

Abstract

A wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and a preparation method thereof are provided. The preparation method comprises: subjecting a solvent and a dispersant to primary ball milling, adding a binder and a plasticizer, carrying out secondary ball milling, adding (001) Ba3Co2Fe24O41 flaky powder and particulate Ba3CoFe24O41 powder, and carrying out flow casting to obtain the wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder. The flow casting technique is used in the invention, materials are dispersed evenly, film thickness is uniform, and prepared casting slurry is nontoxic and friendly to human bodies. The requirement on equipment is simple, the process is stable, suitable for continuous operation and high in production efficiency, allows high automation and has reduced cost, the material has good compactness and uniformity, and the preparation method is simple.

Description

A kind of absorbing material and its system of Z- type ferrites flaky powder filler particles shape powder body Preparation Method
Technical field
The invention belongs to material science, is related to a kind of suction ripple of Z- type ferrites flaky powder filler particles shape powder body Material and preparation method thereof.
Background technology
With developing rapidly for electronic technology, radar and communication technology, electromagenetic wave radiation has become after sound pollution, air Pollution, water pollution, the another big public hazards after solid waste pollution.The electromagnetic interference (EMI) that electromagenetic wave radiation is produced not only can The normal operation of various electronic equipments is affected, and also has harm to the healthy of the mankind.Therefore, develop electricity of good performance Electromagnetic wave shielding material, evolution electromagnetic environment have very urgent scientific meaning and reality need.Traditional absorbing material has to be inhaled The shortcomings of wave energy power is weak, density big, suction wave frequency band is narrow, it is impossible to meet the requirement of novel wave-absorbing material " thin, light, wide, strong ".Cause This, while improving and optimizating traditional absorbing material, does one's utmost to explore the focus that advanced composite material (ACM) is current absorbing material research.
Absorbing material needs to meet two principles：Impedance matching, electromagnetic wave incident are maximum to energy during material surface Into material internal；Attenuation characteristic, the electromagnetic wave into material need rapid effectively decay.Ferrite is research using more It is extensive a kind of, the research of inorganic magnetic powder and the multiple correlation of Organic substance a lot, its single ferritic reflection loss Little, bandwidth is narrow, and in order to improve its absorbing property, the method mainly taken is that chemically composited method (has two or more Ferrite or ferrite and conductive bluk recombination), easily there is chemical reaction in its complicated process of preparation in recombination process, Interfacial effect is complicated, and absorption property is poor.
The content of the invention
It is an object of the invention to provide a kind of absorbing material of Z- type ferrites flaky powder filler particles shape powder body and Its preparation method, as interfacial effect and impedance optimize, the composite wave-suction material has excellent absorbing property, and maximum reflection is damaged Consumption reaches -48.5dB, and preparation process is simple.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of preparation method of the absorbing material of Z- type ferrites flaky powder filler particles shape powder body, it is characterised in that
Step 1：By random Ba2Co2Fe12O22Powder body and (001) BaFe12O19Flaky powder is 1 according to mol ratio:1 mixes Closing, NaCl being adopted for fused-salt medium, at 1250～1300 DEG C, 6～10h of insulation makes oxide carry out abundant fused salt reaction, obtains (001)Ba3Co2Fe24O41Flaky powder；
Step 2：By solvent and dispersant, after carrying out a ball milling, bonding agent and plasticizer are added, secondary ball milling is carried out, It is subsequently adding (001) Ba3Co2Fe24O41Flaky powder and graininess Ba3Co2Fe24O41Powder body, is cast, and obtains Z- sections oxygen The absorbing material of the powder filled graininess powder body of body plate shape；Wherein, by mass percentage, graininess Ba3Co2Fe24O41Powder body Mass percent be 65%～95%, (001) Ba3Co2Fe24O41The mass percent of flaky powder is 5%～35%.
The present invention is further improved by, and solvent is dehydrated alcohol, and dispersant is that butanone is mixed with glycerol trioleate Compound；Binding agent is polyvinyl butyral resin, and plasticizer is the mixture of dibutyl phthalate (DBP) and Polyethylene Glycol.
The present invention is further improved by, and the mass ratio of dehydrated alcohol, butanone and glycerol trioleate is (1～3):(2 ～3):(0.05～1.5)；The mass ratio of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol for (2.5～ 3.0):1:1。
The present invention is further improved by, 200-250 μm of the height of scraper during curtain coating.
The present invention is further improved by, the random Ba2Co2Fe12O22Powder body is prepared by procedure below：
By chemical formula formula by Ba2Co2Fe12O22Analytically pure CoO, BaCO3、Fe2O3It is mixed by 20～24h of ball milling after preparation Close uniform, then dry, sieve, briquetting, then 1230～1270 DEG C of Jing pre-burnings 3～6 hours, blocks of solid is obtained, then by block Shape solid is crossed 120 mesh sieves after crushing and obtains Ba2Co2Fe12O22Powder body.
The present invention is further improved by, (001) BaFe12O19Flaky powder is prepared by procedure below：
Step 1：Will be according to BaFe12O19In mol ratio weigh BaCO respectively3、Fe2O3And fused salt ball milling mixing is equal It is even, then 2～4h is incubated at 1150～1200 DEG C, obtain BaFe12O19Presoma；
Step 2：By Fe2O3And BaCl2.2H2O mixes, and is subsequently adding BaFe12O19Presoma, after ball milling mixing is uniform, 6～10h is incubated at 1200～1250 DEG C, the BaFe that there is orientation in (001) direction is obtained12O19Flaky powder, is designated as (001) BaFe12O19Flaky powder；Wherein, BaFe12O19The quality of presoma is Fe2O3And BaCl2.2H2The 5～10% of O gross masses； BaCl2.2H2The addition of O is Fe2O32～3 times of quality.
The present invention is further improved by, and in step 1, fused salt is NaCl, and the quality of NaCl is BaCO3With Fe2O3Total matter 1～2 times of amount.
The present invention is further improved by, graininess Ba3Co2Fe24O41Powder body is prepared by procedure below：
According to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added in ultra-pure water, Add citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, pH=7 is made, is stirred 3～6h is mixed, colloidal sol is formed, is dried, is obtained black xerogel；Then 3～6h is calcined at 1230～1260 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：(40-60)mL.
A kind of absorbing material of Z- type ferrites flaky powder filler particles shape powder body, the chemical expression of the absorbing material For x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is Ba3Co2Fe24O41Mass percent, and 5%≤x ≤ 35%.
Compared with prior art, the device have the advantages that：The present invention is prepared for lamellar by molten-salt growth method first (001)Ba3Co2Fe24O41Flaky powder, is prepared for Ba by sol-gal process3Co2Fe24O41Graininess powder body；Then by stream The method of prolonging carries out two and is combined, wherein, x is (001) Ba3Co2Fe24O41The mass percent of flaky powder, and 5%≤x≤35%, After curtain coating, excellent (001) Ba of absorbing property is obtained3Co2Fe24O41Flaky powder fills the absorbing material of its graininess powder body. The present invention adopts casting technique, and material dispersion is uniform and thickness of film is homogeneous, and prepares casting slurry avirulence used, Human body will not be damaged.Simple to equipment requirements in the present invention, process stabilizing can be operated continuously, and production efficiency is high, can be real It is existing increasingly automated, reduce cost, material compactness and have good uniformity, and preparation method is simple.
The uniformity of obtained curtain coating thick film of the invention preferably, makes flaky powder uniformly be laid on casting films band.When (001)Ba3Co2Fe24O41The mass fraction of flaky powder is 20%, and when mass fraction is 80%, saturation magnetization is 28.85emu/g, remanent magnetization are 3.53emu/g, and preferably, absorption maximum can reach -48.68dB, -10dB to absorbing property Following absorption band width is 4GHz.
Further, lamellar Ba is prepared using molten-salt growth method in the present invention3Co2Fe24O41, sol-gal process preparation Ba3Co2Fe24O41Granule, prepares x (001) Ba using the tape casting beneficial to the later stage3Co2Fe24O41/(1-x)Ba3Co2Fe24O4Inhale ripple material Material, absorbing material good dispersion prepared by the method, thickness are uniform, and compactness is good and can generate on a large scale.
Description of the drawings
Fig. 1 is (001) Ba prepared by molten-salt growth method3Co2Fe24O41Flaky powder, the XRD figure of 1300 DEG C of sintering gained.
Fig. 2 is graininess Ba prepared by sol-gal process3Co2Fe24O41Powder body, the XRD figure of 1250 DEG C of sintering gained.
Fig. 3 is as (001) Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder When weight percentage ratio is 95%, the SEM figures of curtain coating gained composite.
Fig. 4 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter When amount percentage ratio is 80%, the SEM figures of curtain coating gained composite.
Fig. 5 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder quality When percentage ratio is 95%, the hysteresis curve of curtain coating gained composite.
Fig. 6 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter When amount percentage ratio is 80%, the hysteresis curve of curtain coating gained composite.
Fig. 7 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder quality Percentage ratio is 95%, when thickness is 2mm, the reflection loss figure of curtain coating gained composite.
Fig. 8 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder quality Percentage ratio is 95%, when thickness is 3mm, the reflection loss figure of curtain coating gained composite.
Fig. 9 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder quality Percentage ratio is 95%, when thickness is 3.5mm, the reflection loss figure of curtain coating gained composite.
Figure 10 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 5%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 95%, when thickness is 4mm, the reflection loss figure of curtain coating gained composite.
Figure 11 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 10%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 90%, when thickness is 2mm, the reflection loss figure of curtain coating gained composite.
Figure 12 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 10%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 90%, when thickness is 3mm, the reflection loss figure of curtain coating gained composite.
Figure 13 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 10%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 90%, when thickness is 3.5mm, the reflection loss figure of curtain coating gained composite.
Figure 14 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 10%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 90%, when thickness is 4mm, the reflection loss figure of curtain coating gained composite.
Figure 15 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 15%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 85%, when thickness is 2mm, the reflection loss figure of curtain coating gained composite.
Figure 16 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 15%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 85%, when thickness is 3mm, the reflection loss figure of curtain coating gained composite.
Figure 17 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 15%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 85%, when thickness is 3.5mm, the reflection loss figure of curtain coating gained composite.
Figure 18 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 15%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 85%, when thickness is 4mm, the reflection loss figure of curtain coating gained composite.
Figure 19 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 80%, when thickness is 2mm, the reflection loss figure of curtain coating gained composite.
Figure 20 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 80%, when thickness is 3mm, the reflection loss figure of curtain coating gained composite.
Figure 21 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 80%, when thickness is 3.5mm, the reflection loss figure of curtain coating gained composite.
Figure 22 is to work as Ba3Co2Fe24O41The mass percent of flaky powder is 20%, Ba3Co2Fe24O41Graininess powder body matter Amount percentage ratio is 80%, when thickness is 4mm, the reflection loss figure of curtain coating gained composite.
Specific embodiment
By specific embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
The absorbing material of Z- type ferrite flaky powder filler particles shape powder body prepared by the present invention, chemical expression is x (001)Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is Ba3Co2Fe24O41Mass percent, and 5%≤x≤ 35%.
Ba in the present invention3Co2Fe24O41Flaky powder is in (001) direction oriented growth.In the present invention it is compressing specifically By the casting films folded as hot pressing in mould, the temperature of hot pressing is 60～80 DEG C, and pressure is 0.5～1MPa, and the dwell time is 30s～1min.What the electromagnetic wave transparent material in the present invention was selected is polyvinyl butyral resin.
Embodiment 1
One kind (001) Ba3Co2Fe24O41Flaky powder fills absorbing material of its graininess powder body and preparation method thereof, its It is characterised by, the chemical expression of the absorbing material is x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is (001)Ba3Co2Fe24O41The mass percent of flaky powder, and x=5%.
Above-mentioned (001) Ba3Co2Fe24O41/Ba3Co2Fe24O41The preparation method of absorbing material, comprises the following steps：
(1) by BaCO3, Fe2O3, after NaCl is accurately weighed with electronic balance, it is placed in ball grinder, is sufficiently mixed It is even, take out dry for standby.Wherein BaCO3, Fe2O3The mass ratio of quality summation and NaCl be 1:1, BaCO3With Fe2O3Amount press According to pressing chemical general formula BaFe12O19Weighed；Material used by ball milling, ball, the mass ratio of ethanol is 1：2：1, the rotating speed of ball mill For 500r/min, ball milling 18h, temperature is that 7h is placed at 98 DEG C in an oven, takes out mixed powder, crosses 60 mesh sieves.
(2) raw material prepared is obtained into BaFe in 1150 DEG C of pre-burning 4h12O19Presoma, is then entered with the ultra-pure water of heat Row washing, until Sodium Chloride is washed totally.
(3) by Fe2O3、BaCl2.2H2O and BaFe12O19Presoma ball milling mixing is uniform, then calcines at 1200 DEG C 10h, is subsequently adding the ultra-pure water of heat, and ultrasonic disperse, washing are filtered, be dried to obtain lamellar (001) BaFe12O19Flaky powder, It is designated as (001) BaFe12O19Flaky powder.Wherein, BaCl2.2H2The addition of O is Fe2O32 times of quality；BaFe12O19Forerunner The quality of body is BaCl2.2H2O、Fe2O3And BaFe12O19The 5% of presoma gross mass.
(4) by chemical general formula Ba2Co2Fe12O22, by BaCO3, Fe2O3, CoO, after accurately being weighed with electronic balance, placement The ball milling 24h in ball grinder, then dries, and sieves, briquetting, is then incubated 6h into phase at 1230 DEG C, crosses 120 mesh sieve, obtain To random Ba2Co2Fe12O22Powder body, is designated as Co2Y, by the random Ba for obtaining2Co2Fe12O22Powder body and above-mentioned (001) for preparing BaFe12O19Powder body is 1 according to mol ratio:1 mixing, adds NaCl, and electric stirring mixing 12h, the quality that NaCl is added are equal to Random Ba2Co2Fe12O22Powder body and (001) BaFe12O19Powder quality summation, being incubated 10h at 1250 DEG C is filled oxide Divide fused salt reaction, then washed with the ultra-pure water of heat, until Sodium Chloride is washed clean, filtration is dried, obtains (001) Ba3Co2Fe24O41Flaky powder.
(5) according to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added to into ultra-pure water In, add citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, pH=is made 7,3～6h is stirred, colloidal sol is formed, is dried, is obtained black xerogel；Then 6h is calcined at 1230 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：40mL.
(6) x (001) Ba is prepared by casting technique3Co2Fe24O41/(1-x)Ba3Co2Fe24O41Absorbing material, wherein, x =5%.First by dehydrated alcohol, butanone and glycerol trioleate, its mass ratio is 1:2:0.05, carry out a ball milling, ball Consume time as 4h, be subsequently adding the mixture of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol, its mass ratio For 2.5:1:1, secondary ball milling is carried out, Ball-milling Time is 4h, is subsequently adding (001) Ba3Co2Fe24O41Flaky powder and Ba3Co2Fe24O41Graininess powder body ball milling 2h.
(7) the good material of ball milling is cast, during curtain coating, the height of scraper is 200 μm, obtains Z- type ferrite lamellars The absorbing material of powder filled graininess powder body；
Place two days later, lamination heats 15min under conditions of 60 DEG C, the hot pressing on the press of 1MPa, and pressurize 30s is obtained Sample, is tested.
Figure it is seen that the Ba for preparing3Co2Fe24O41Graininess powder body is generated without dephasign.
From figure 3, it can be seen that (001) Ba3Co2Fe24O41Template grains be 10～20 μm or so of lamellar, Ba3Co2Fe24O41 Granular powder grain size is 80nm～100nm or so, Ba3Co2Fe24O41Flaky powder content is less, composite compactness Well.
From fig. 5, it can be seen that the saturation magnetization of composite is 28.90emu/g, remanent magnetization is 3.53emu/g, coercive field are 124.41Oe.
From figure 7 it can be seen that thickness of composite material is 2mm, and in 16.1GHz, maximum reflection loss -33.2dB, -10dB Following absorption band width is 6GHz (12～18GHz).
From figure 8, it is seen that thickness of composite material is 3mm, and in 7.3GHz, maximum reflection loss -24.8dB, -10dB Following absorption band width is 4GHz (6～10GHz).
From fig. 9, it can be seen that thickness of composite material is 3.5mm, and in 6.0GHz, maximum reflection loss -48.4dB, - The absorption band width of below 10dB is 3GHz (5～8GHz).
From fig. 10 it can be seen that thickness of composite material is 4mm, and in 5.0GHz, maximum reflection loss -24.4dB, -10dB Following absorption band width is 3GHz (4～7GHz).
Embodiment 2
One kind (001) Ba3Co2Fe24O41Flaky powder fills absorbing material of its graininess powder body and preparation method thereof, its It is characterised by, the chemical expression of the absorbing material is x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is (001)Ba3Co2Fe24O41The mass percent of flaky powder, and x=10%.
Above-mentioned (001) Ba3Co2Fe24O41/Ba3Co2Fe24O41The preparation method of absorbing material, comprises the following steps：
(1) by raw material BaCO3, Fe2O3, after NaCl is accurately weighed with electronic balance, it is placed in ball grinder, it is fully mixed Close uniform, take out dry for standby.Wherein raw material BaCO3, Fe2O3The mass ratio of quality summation and NaCl be 1:1, BaCO3With Fe2O3Amount according to pressing chemical general formula BaFe12O19Weighed；Material used by ball milling, ball, the mass ratio of ethanol is 1：2：1, ball The rotating speed of grinding machine is 500r/min, ball milling 18h, and temperature is that 5h is placed at 90 DEG C in an oven, takes out mixed powder, crosses 60 mesh Sieve.
(2) raw material prepared is obtained into BaFe in 1160 DEG C of pre-burning 5h12O19Presoma, is then entered with the ultra-pure water of heat Row washing, until Sodium Chloride is washed totally.
(3) by Fe2O3、BaCl2.2H2O and BaFe12O19Presoma ball milling mixing is uniform, then calcines 8h at 1240 DEG C Obtain lamellar (001) BaFe12O19Flaky powder, is subsequently adding the ultra-pure water of heat, and ultrasonic disperse, washing are filtered, be dried to obtain Lamellar (001) BaFe12O19Flaky powder, is designated as (001) BaFe12O19Flaky powder.Wherein, BaCl2.2H2The addition of O is Fe2O32.2 times of quality；BaFe12O19The quality of presoma is BaCl2.2H2O、Fe2O3And BaFe12O19Presoma gross mass 8%.
(4) by chemical general formula Ba2Co2Fe12O22, by raw material BaCO3, Fe2O3, CoO, after accurately being weighed with electronic balance, Ball milling 23h in ball grinder is placed on, is then dried, is sieved, then briquetting at 1250 DEG C is incubated 5h into phase, crosses 120 mesh sieves Son, obtains random Ba2Co2Fe12O22Powder body, is designated as Co2Y, by the random Ba for obtaining2Co2Fe12O22Powder body is prepared with above-mentioned (001)BaFe12O19(as template) is 1 according to mol ratio:1 mixing, adds NaCl electric stirring mixing 14h, and NaCl is added Quality be equal to Ba2Co2Fe12O22Powder body and (001) BaFe12O191.2 times of flaky powder quality summation, at 1260 DEG C, insulation 9h makes oxide carry out abundant fused salt reaction, is then washed with the ultra-pure water of heat, until Sodium Chloride is washed clean, mistake Filter, is dried, obtains (001) Ba3Co2Fe24O41Flaky powder.
(5) according to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added to into ultra-pure water In, add citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, pH=is made 7,3～6h is stirred, colloidal sol is formed, is dried, is obtained black xerogel；Then 5h is calcined at 1240 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：60mL.
(6) x (001) Ba is prepared by casting technique3Co2Fe24O41/(1-x)Ba3Co2Fe24O41Absorbing material, wherein, x =10%.First by dehydrated alcohol, butanone and glycerol trioleate, its mass ratio is 1.5:2.5:0.08, a ball milling is carried out, Ball-milling Time is 4h, is subsequently adding the mixture of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol, its quality Than for 2.7:1:1, secondary ball milling is carried out, Ball-milling Time is 4h, is subsequently adding (001) Ba3Co2Fe24O41Flaky powder and Ba3Co2Fe24O41Graininess powder body ball milling 2h.
(7) the good material of ball milling is cast, during curtain coating, the height of scraper is 240 μm, obtains Z- type ferrite lamellars The absorbing material of powder filled graininess powder body；
Place two days later, lamination heats 7min under conditions of 70 DEG C, the hot pressing on the press of 0.6MPa, and pressurize 50s is obtained To sample, tested.
It can be seen from figure 11 that thickness of composite material is 2mm, and in 14GHz, maximum reflection loss -18.5dB, -10dB Following absorption band width is 5.5GHz (12.5～18GHz).
It can be recognized from fig. 12 that thickness of composite material is 3mm, and in 8.2GHz, maximum reflection loss -32.5dB, -10dB Following absorption band width is 6GHz (6.8～12.8GHz).
As can be seen from Figure 13, thickness of composite material is 3.5mm, in 5.9GHz, maximum reflection loss -26.8dB, - The absorption band width of below 10dB is 3.5GHz (4.5～8GHz).
It is seen from figure 14 that thickness of composite material is 4mm, and in 6.9GHz, maximum reflection loss -49.5dB, -10dB Following absorption band width is 3.7GHz (5.5～9.2GHz).
Jing tests prove (001) Ba for preparing3Co2Fe24O41/Ba3Co2Fe24O41Absorbing material, template uniformly spread over In graininess powder body, there is excellent absorbing property in the range of 2-18GHz.
Embodiment 3
One kind (001) Ba3Co2Fe24O41Flaky powder fills absorbing material of its graininess powder body and preparation method thereof, its It is characterised by, the chemical expression of the absorbing material is x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is (001)Ba3Co2Fe24O41The mass percent of flaky powder, and x=15%.
Above-mentioned (001) Ba3Co2Fe24O41/Ba3Co2Fe24O41The preparation method of absorbing material, comprises the following steps：
(1) by raw material BaCO3, Fe2O3, after NaCl is accurately weighed with electronic balance, it is placed in ball grinder, it is fully mixed Close uniform, take out dry for standby.Wherein raw material BaCO3, Fe2O3The mass ratio of quality summation and NaCl be 1:1, BaCO3With Fe2O3Amount according to pressing chemical general formula BaFe12O19Weighed；Material used by ball milling, ball, the mass ratio of ethanol is 1：2：1, ball The rotating speed of grinding machine is 500r/min, ball milling 18h, and temperature is that 7h is placed at 98 DEG C in an oven, takes out mixed powder, crosses 60 mesh Sieve.
(2) raw material prepared is obtained into BaFe in 1180 DEG C of pre-burning 4h12O19Presoma, is then entered with the ultra-pure water of heat Row washing, until Sodium Chloride is washed totally.
(3) by Fe2O3、BaCl2.2H2O and BaFe12O19Presoma ball milling mixing is uniform, then calcines 8h at 1240 DEG C Obtain lamellar (001) BaFe12O19Flaky powder, is subsequently adding the ultra-pure water of heat, and ultrasonic disperse, washing are filtered, be dried to obtain Lamellar (001) BaFe12O19Flaky powder, is designated as (001) BaFe12O19Flaky powder.Wherein, BaCl2.2H2The addition of O is Fe2O32.2 times of quality；BaFe12O19The quality of presoma is BaCl2.2H2O、Fe2O3And BaFe12O19Presoma gross mass 10%.
(4) by chemical general formula Ba2Co2Fe12O22, by raw material BaCO3, Fe2O3, CoO, after accurately being weighed with electronic balance, Ball milling 23h in ball grinder is placed on, is then dried, is sieved, then briquetting at 1250 DEG C is incubated 5h into phase, crosses 120 mesh sieves Son, obtains random Ba2Co2Fe12O22Powder body, is designated as Co2Y, by the random Ba for obtaining2Co2Fe12O22Powder body is prepared with above-mentioned (001)BaFe12O19(as template) is 1 according to mol ratio:1 mixing, adds NaCl electric stirring mixing 14h, and NaCl is added Quality be equal to Ba2Co2Fe12O22Powder body and (001) BaFe12O191.2 times of flaky powder quality summation, at 1270 DEG C, insulation 8h makes oxide carry out abundant fused salt reaction, is then washed with the ultra-pure water of heat, until Sodium Chloride is washed clean, mistake Filter, is dried, obtains (001) Ba3Co2Fe24O41Flaky powder.
(5) according to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added to into ultra-pure water In, add citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, pH=is made 7,3～6h is stirred, colloidal sol is formed, is dried, is obtained black xerogel；Then 4h is calcined at 1250 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：40mL.
(6) x (001) Ba is prepared by casting technique3Co2Fe24O41/(1-x)Ba3Co2Fe24O41Absorbing material, wherein, x =15%.First by dehydrated alcohol, butanone and glycerol trioleate, its mass ratio is 2:2.8:1, carry out a ball milling, ball Consume time as 4h, be subsequently adding the mixture of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol, its mass ratio For 2.8:1:1, secondary ball milling is carried out, Ball-milling Time is 4h, is subsequently adding (001) Ba3Co2Fe24O41Flaky powder and Ba3Co2Fe24O41Graininess powder body ball milling 2h.
(7) the good material of ball milling is cast, during curtain coating, the height of scraper is 240 μm, obtains Z- type ferrite lamellars The absorbing material of powder filled graininess powder body；
Place two days later, lamination heats 10min under conditions of 75 DEG C, the hot pressing on the press of 0.6MPa, and pressurize 50s is obtained To sample, tested.
It can be seen from fig. 15 that thickness of composite material is 2mm, and in 8.8GHz, maximum reflection loss -24.9dB, -10dB Following absorption band width is 6.4GHz (5.5～11.9GHz).
As can be seen from Figure 16, thickness of composite material is 3mm, in 6.6GHz, maximum reflection loss -42.7dB, -10dB Following absorption band width is 4.4GHz (4.6～9GHz).
As can be seen from Figure 17, thickness of composite material is 3.5mm, in 4.6GHz, maximum reflection loss -24.2dB, - The absorption band width of below 10dB is 4.4GHz (3.4～6.1GHz) and (12.7～14.4GHz).
As can be seen from Figure 18, thickness of composite material is 4mm, in 5.3GHz, maximum reflection loss -34.3dB, -10dB Following absorption band width is 7.2GHz (3.9～7.1GHz) and (13～18GHz).
Jing tests prove (001) Ba for preparing3Co2Fe24O41/Ba3Co2Fe24O41Absorbing material, template uniformly spread over In graininess powder body, there is excellent absorbing property in the range of 2-18GHz.
Embodiment 4
One kind (001) Ba3Co2Fe24O41Flaky powder fills absorbing material of its graininess powder body and preparation method thereof, its It is characterised by, the chemical expression of the absorbing material is x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, wherein x is (001)Ba3Co2Fe24O41The mass percent of flaky powder, and x=20%.
Above-mentioned (001) Ba3Co2Fe24O41/Ba3Co2Fe24O41The preparation method of absorbing material, comprises the following steps：
(1) by raw material BaCO3, Fe2O3, after NaCl is accurately weighed with electronic balance, it is placed in ball grinder, it is fully mixed Close uniform, take out dry for standby.Wherein raw material BaCO3, Fe2O3The mass ratio of quality summation and NaCl be 1:1, BaCO3With Fe2O3Amount according to pressing chemical general formula BaFe12O19Weighed；Material used by ball milling, ball, the mass ratio of ethanol is 1：2：1, ball The rotating speed of grinding machine is 500r/min, ball milling 18h, and temperature is that 8h is placed at 100 DEG C in an oven, takes out mixed powder, crosses 60 mesh Sieve.
(2) raw material prepared is obtained into BaFe in 1200 DEG C of pre-burning 2h12O19Presoma, is then entered with the ultra-pure water of heat Row washing, until Sodium Chloride is washed totally.
(3) by Fe2O3、BaCl2.2H2O and BaFe12O19Presoma ball milling mixing is uniform, then calcines 6h at 1250 DEG C Obtain lamellar (001) BaFe12O19Flaky powder, is subsequently adding the ultra-pure water of heat, and ultrasonic disperse, washing are filtered, be dried to obtain Lamellar (001) BaFe12O19Flaky powder, is designated as (001) BaFe12O19Flaky powder.Wherein, BaCl2.2H2The addition of O is Fe2O32.2 times of quality；BaFe12O19The quality of presoma is BaCl2.2H2O、Fe2O3And BaFe12O19Presoma gross mass 15%.
(4) by chemical general formula Ba2Co2Fe12O22, by raw material BaCO3, Fe2O3, CoO, after accurately being weighed with electronic balance, Ball milling 23h in ball grinder is placed on, is then dried, is sieved, then briquetting at 1250 DEG C is incubated 5h into phase, crosses 120 mesh sieves Son, obtains random Ba2Co2Fe12O22Powder body, is designated as Co2Y, by the random Ba for obtaining2Co2Fe12O22Powder body is prepared with above-mentioned (001)BaFe12O19(as template) is 1 according to mol ratio:1 mixing, adds NaCl electric stirring mixing 14h, and NaCl is added Quality be equal to Ba2Co2Fe12O22Powder body and (001) BaFe12O191.2 times of flaky powder quality summation, at 1300 DEG C, insulation 6h makes oxide carry out abundant fused salt reaction, is then washed with the ultra-pure water of heat, until Sodium Chloride is washed clean, mistake Filter, is dried, obtains (001) Ba3Co2Fe24O41Flaky powder.
(5) according to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added to into ultra-pure water In, add citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, pH=is made 7,3～6h is stirred, colloidal sol is formed, is dried, is obtained black xerogel；Then 3h is calcined at 1260 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：40mL.
(6) x (001) Ba is prepared by casting technique3Co2Fe24O41/(1-x)Ba3Co2Fe24O41Absorbing material, wherein, x =15%.First by dehydrated alcohol, butanone and glycerol trioleate, its mass ratio is 3:3:1.5, carry out a ball milling, ball Consume time as 4h, be subsequently adding the mixture of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol, its mass ratio For 3:1:1, secondary ball milling is carried out, Ball-milling Time is 4h, is subsequently adding (001) Ba3Co2Fe24O41Flaky powder and Ba3Co2Fe24O41Graininess powder body ball milling 2h.
(7) the good material of ball milling is cast, during curtain coating, the height of scraper is 250 μm, obtains Z- type ferrite lamellars The absorbing material of powder filled graininess powder body；
Place two days later, lamination heats 10min under conditions of 80 DEG C, the hot pressing on the press of 0.5MPa, pressurize 1min, Sample is obtained, is tested.
It will be seen from figure 1 that the Ba for preparing3Co2Fe24O41Generate without dephasign, the oriented growth on (001) direction.
From fig. 4, it can be seen that (001) Ba3Co2Fe24O41Template grains be 10～20 μm or so of lamellar, Ba3Co2Fe24O41 Graininess powder grain size is 80nm～100nm or so, Ba3Co2Fe24O41Flaky powder content is more, and composite is fine and close Property is good.
From fig. 6, it can be seen that the saturation magnetization of composite is 31.2emu/g, remanent magnetization is 3.72emu/g, coercive field are 125.73Oe.
As can be seen from Figure 19, thickness of composite material is 2mm, in 14.3GHz, maximum reflection loss -38.6dB, - The absorption band width of below 10dB is 6.5GHz (10～16.5GHz).
It can be observed from fig. 20 that thickness of composite material is 3mm, and in 6.8GHz, maximum reflection loss -30.5dB, -10dB Following absorption band width is 5GHz (5～10GHz).
As can be seen from Figure 21, thickness of composite material is 3.5mm, in 5.5GHz, maximum reflection loss -49.8dB, - The absorption band width of below 10dB is 3GHz (5～8GHz).
As can be seen from Figure 22, thickness of composite material is 4mm, in 4.8GHz, maximum reflection loss -37dB, -10dB with Under absorption band width be 3.2GHz (4～7.2GHz).
Jing tests prove (001) Ba for preparing3Co2Fe24O41/Ba3Co2Fe24O41Absorbing material, template uniformly spread over In graininess powder body, there is excellent absorbing property in the range of 2-18GHz.
The present invention prepares x (001) Ba by the tape casting3Co2Fe24O41/(1-x)Ba3Co2Fe24O41Thick film, wherein, x is Ba3Co2Fe24O41Mass percent, and 5%≤x≤35%.Then by Organic substance and orientation (001) Ba3Co2Fe24O41's Flaky powder and graininess Ba3Co2Fe24O41Powder body ball milling mixing, curtain coating, hot pressing are then discharged out Organic substance, adopt in the present invention Molten-salt growth method prepares (001) Ba3Co2Fe24O41Flaky powder, using sol-gal process prepare Ba3Co2Fe24O41Graininess powder body, most Casting molding processes are adopted afterwards, prepare the thick film of directional profile.The present invention is simple to equipment requirements, and production efficiency is high, automatically Change level is high, can be mass-produced, and obtained Radar Absorbing Properties of Composites is excellent.

Claims (9)

1. a kind of preparation method of the absorbing material of Z- type ferrites flaky powder filler particles shape powder body, it is characterised in that
Step 1：By random Ba2Co2Fe12O22Powder body and (001) BaFe12O19Flaky powder is 1 according to mol ratio:1 mixing, adopts NaCl is fused-salt medium, and at 1250～1300 DEG C, 6～10h of insulation makes oxide carry out abundant fused salt reaction, obtains (001) Ba3Co2Fe24O41Flaky powder；
Step 2：By solvent and dispersant, after carrying out a ball milling, bonding agent and plasticizer are added, secondary ball milling is carried out, then Add (001) Ba3Co2Fe24O41Flaky powder and graininess Ba3Co2Fe24O41Powder body, is cast, and obtains Z- type ferrite pieces The absorbing material of the powder filled graininess powder body of shape；Wherein, by mass percentage, graininess Ba3Co2Fe24O41The matter of powder body Amount percent is 65%～95%, (001) Ba3Co2Fe24O41The mass percent of flaky powder is 5%～35%.
2. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 1 Method, it is characterised in that solvent is dehydrated alcohol, and dispersant is the mixture of butanone and glycerol trioleate；Binding agent is poly- Vinyl butyral, plasticizer are the mixture of dibutyl phthalate (DBP) and Polyethylene Glycol.
3. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 2 Method, it is characterised in that the mass ratio of dehydrated alcohol, butanone and glycerol trioleate is (1～3):(2～3):(0.05～ 1.5)；The mass ratio of polyvinyl butyral resin, dibutyl phthalate (DBP) and Polyethylene Glycol is (2.5～3.0):1:1.
4. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 1 Method, it is characterised in that 200-250 μm of the height of scraper during curtain coating.
5. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 1 Method, it is characterised in that the random Ba2Co2Fe12O22Powder body is prepared by procedure below：
By chemical formula formula by Ba2Co2Fe12O22Analytically pure CoO, BaCO3、Fe2O3It is equal by 20～24h of ball milling mixing after preparation It is even, then dry, sieve, briquetting, then 1230～1270 DEG C of Jing pre-burnings 3～6 hours, blocks of solid is obtained, then will be block solid Body is crossed 120 mesh sieves after crushing and obtains Ba2Co2Fe12O22Powder body.
6. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 1 Method, it is characterised in that (001) BaFe12O19Flaky powder is prepared by procedure below：
Step 1：Will be according to BaFe12O19In mol ratio weigh BaCO respectively3、Fe2O3And fused salt ball milling mixing is uniform, so 2～4h is incubated at 1150～1200 DEG C afterwards, BaFe is obtained12O19Presoma；
Step 2：By Fe2O3And BaCl2·2H2O mixes, and is subsequently adding BaFe12O19Presoma, after ball milling mixing is uniform, 1200 6～10h is incubated at～1250 DEG C, the BaFe that there is orientation in (001) direction is obtained12O19Flaky powder, is designated as (001) BaFe12O19Flaky powder；Wherein, BaFe12O19The quality of presoma is Fe2O3And BaCl2·2H2The 5～10% of O gross masses； BaCl2·2H2The addition of O is Fe2O32～3 times of quality.
7. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 6 Method, it is characterised in that fused salt is NaCl in step 1, and the quality of NaCl is BaCO3With Fe2O31～2 times of gross mass.
8. the preparation of the absorbing material of a kind of Z- type ferrites flaky powder filler particles shape powder body according to claim 1 Method, it is characterised in that graininess Ba3Co2Fe24O41Powder body is prepared by procedure below：
According to chemical general formula Ba3Co2Fe24O41, barium nitrate, five water cobalt nitrates, nine water ferric nitrates are added in ultra-pure water, then plus Enter citric acid and be configured to solution, stir at 80 DEG C, then ammonia is dropwise added drop-wise in solution, make pH=7, stirring 3 ～6h, forms colloidal sol, is dried, obtains black xerogel；Then 3～6h is calcined at 1230～1260 DEG C, obtain graininess Ba3Co2Fe24O41Powder body；Wherein, the amount of total material of the amount of the material of citric acid and barium ionss, cobalt ion and iron ion It is identical；The ratio of the gross mass and ultra-pure water of barium nitrate, five water cobalt nitrates and nine water ferric nitrates is 20g：(40-60)mL.
9. the suction ripple of Z- type ferrite flaky powder filler particles shape powder body prepared by a kind of method according to claim 1 Material, it is characterised in that the chemical expression of the absorbing material is x (001) Ba3Co2Fe24O41/(1-x)Ba3Co2Fe24O41, its Middle x is Ba3Co2Fe24O41Mass percent, and 5%≤x≤35%.
CN201611161674.5A 2016-12-15 2016-12-15 Wave absorbing material of Z-shaped ferrite flaky powder filled particulate powder and preparation method thereof Pending CN106587978A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107835628A (en) * 2017-11-17 2018-03-23 桂林电子科技大学 A kind of Fe/Y ferrites composite wave-suction material and preparation method thereof
CN108314866A (en) * 2018-02-08 2018-07-24 西安理工大学 A kind of orientationization Co2Z ferrites-Fe2O3Composite wave-suction material and synthetic method
CN108641250A (en) * 2018-04-13 2018-10-12 西安理工大学 A kind of multilevel hierarchy magnetic-dielectric composite wave-suction material and preparation method
CN110517723A (en) * 2019-08-30 2019-11-29 山东中瑞电子股份有限公司 The preparation method of high magnetic permeability GHz wave band absorbing material
CN110836904A (en) * 2019-10-14 2020-02-25 江苏宝纳电磁新材料有限公司 Screening method for improving dispersion wettability of flaky wave-absorbing powder
CN116396069A (en) * 2023-03-24 2023-07-07 电子科技大学 Preparation method of non-magnetic field oriented textured hexaferrite material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1280373A (en) * 2000-08-25 2001-01-17 清华大学 Composition of high performance low-temperature sintered VHF laminated inductive material and its preparing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1280373A (en) * 2000-08-25 2001-01-17 清华大学 Composition of high performance low-temperature sintered VHF laminated inductive material and its preparing method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PANPAN CHANG ET AL.: "Textured Z-type hexaferrites Ba3Co2Fe24O41 ceramics with high permeability by reactive templated grain growth method", 《JOURNAL OF THE EUROPEAN CERAMIC SOCIETY》 *
ROBERT C.PULLAR.: "Hexagonal ferrites:A review of the synthesis,properties and applications of hexaferrite ceramics", 《PROGRESS IN MATERIALS SCIENCE》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107835628A (en) * 2017-11-17 2018-03-23 桂林电子科技大学 A kind of Fe/Y ferrites composite wave-suction material and preparation method thereof
CN108314866A (en) * 2018-02-08 2018-07-24 西安理工大学 A kind of orientationization Co2Z ferrites-Fe2O3Composite wave-suction material and synthetic method
CN108314866B (en) * 2018-02-08 2020-09-25 西安理工大学 Oriented Co2Z ferrite-Fe2O3Composite wave-absorbing material and synthetic method
CN108641250A (en) * 2018-04-13 2018-10-12 西安理工大学 A kind of multilevel hierarchy magnetic-dielectric composite wave-suction material and preparation method
CN108641250B (en) * 2018-04-13 2020-11-17 西安理工大学 Magnetic-dielectric composite wave-absorbing material with multilevel structure and preparation method thereof
CN110517723A (en) * 2019-08-30 2019-11-29 山东中瑞电子股份有限公司 The preparation method of high magnetic permeability GHz wave band absorbing material
CN110517723B (en) * 2019-08-30 2022-04-01 山东中瑞电子股份有限公司 Preparation method of high-permeability GHz-band absorbing material
CN110836904A (en) * 2019-10-14 2020-02-25 江苏宝纳电磁新材料有限公司 Screening method for improving dispersion wettability of flaky wave-absorbing powder
CN110836904B (en) * 2019-10-14 2022-07-26 江苏宝纳电磁新材料有限公司 Screening method for improving dispersion wettability of flaky wave-absorbing powder
CN116396069A (en) * 2023-03-24 2023-07-07 电子科技大学 Preparation method of non-magnetic field oriented textured hexaferrite material
CN116396069B (en) * 2023-03-24 2024-01-26 电子科技大学 Preparation method of non-magnetic field oriented textured hexaferrite material

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Application publication date: 20170426