CN107835628A - A kind of Fe/Y ferrites composite wave-suction material and preparation method thereof - Google Patents
A kind of Fe/Y ferrites composite wave-suction material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of Fe/Y ferrites composite wave-suction material and preparation method thereof, the Fe/Y ferrites composite wave-suction material is characterised by, Y ferrites：Fe powder mass ratio is 100：0,80：20,60：40,40：60,0：100.Methods described comprises the following steps：Y-type ferrite powder is prepared, then Fe powder is mixed with ferrite powder using planetary ball mill, obtains composite wave-suction material.This Fe/Y ferrites composite wave-suction material, in 2 18GHz microwave bands, absorption band is wider, and ferritic preparation technology is fairly simple, readily reach the uniformity of molecular level, the temperature of synthesis is relatively low, and the granularity prepared is smaller, absorbs product with the composite microwave that absorption band is wide, absorbing property is good suitable for preparing.This method preparation technology is simple, the cost of material is low, and the complex ferrite powder absorbing property of preparation is good.
Description
Technical field
The present invention relates to microwave absorbing material, specifically a kind of Fe/Y ferrites composite wave-suction material and preparation method thereof.
Background technology
In recent years, science and technology develop rapidly, and various electronic and electrical equipments are widely used in many fields, are not only
Social production provides technical support, and also the daily life to the mankind brings facility, but electromagnetic pollution is also expanded therewith, electromagnetism
Radiation may cause fuel factor, non-thermal effect, cumulative effect etc. to human body, can influence the physiology operation of human normal, meanwhile,
Electromagnetic radiation also can produce bad interference to electronic equipment, and therefore, how to reduce electromagnetic radiation turns into the focus of social concerns.
Absorbing material be one kind can effective electromagnetic wave absorption, and electromagnetic energy is changed by the various loss mechanisms of material
Into heat energy or a kind of material of other energy.Since plane hexad ferrite is found, ferrite obtains in commercial technology field
To being widely applied, ferrite is widely used in permanent magnet, data storage material, electronic communication equipment component, especially
It is the application in microwave gigahertz frequency range.At present the electromagnetic wave absorbing material developed mainly have ferrimagnetism absorbing material,
Micro-, ultramicro magnetic metal and alloy powder electromagnetic wave absorbing material, polycrystalline iron fiber electromagnetic wave absorbing material, nano-magnetic absorbing material
With rare earth intermetallic compound electromagnetic wave absorbing material.
Ferrite has the advantages of its is intrinsic as traditional electromagnetic wave absorbing material, such as chemical stability is good, and resistivity is high,
Corrosion-resistant and mechanical strength is stable.But it also has the shortcomings that intrinsic, example：Saturation magnetization is not high, by the Snoek limit
Limitation, it is difficult to improve the value of its complex permeability in high-frequency range.And the frequency range where the Snoek limiting values of magnetic alloy
It is very high, so magnetic alloy still can keep the value of higher complex permeability in the range of high frequency, but magnetic alloy
Resistivity is low, and eddy-current loss can be produced in the presence of electromagnetic field of high frequency, influences electromagnetic performance of the material in high-frequency range, makes
Obtaining its complex permeability reduces.It is mainly at present Fe, Co, Ni and its alloy powder etc. using most magnetically soft alloy micro mists, due to
Fe resource is relatively abundanter, and compare the cheap of Co and Ni, and the absorbing property of Fe base electromagnetic wave absorbing materials is preferable.
The content of the invention
The purpose of the present invention be in view of the shortcomings of the prior art, and provide a kind of Fe/Y ferrites composite wave-suction material and its
Preparation method.This Fe/Y ferrites composite wave-suction material, in 2GHz-18GHz microwave bands, absorption band is wider, and
Ferritic preparation technology is fairly simple, readily reaches the uniformity of molecular level, the temperature of synthesis is relatively low, prepares
The granularity come is smaller, absorbs product with the composite microwave that absorption band is wide, absorbing property is good suitable for preparing.This method
Preparation technology is simple, the cost of material is low, and the complex ferrite powder absorbing property of preparation is good.
Realizing the technical scheme of the object of the invention is：
A kind of Fe/Y ferrites composite wave-suction material, Y ferrites：Fe powder mass ratio is 100：0,80：20,60：40,
40：60,0:100.
A kind of preparation method for preparing above-mentioned Fe/Y ferrites composite wave-suction material, comprises the following steps：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratioes weigh the Y-type ferrite and Fe powder of step 1) preparation, are mixed in mortar
Uniformly, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane while ball milling, n-hexane can be with
Avoid mixed-powder from reuniting or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhere on ball or on chamber wall, ball
Mixed-powder after mill is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 10h-20h, ratio of grinding media to material 10：1-20：1, rotating speed 300r/min-
380r/min。
This Fe/Y ferrites composite wave-suction material, in 2GHz-18GHz microwave bands, absorption band is wider, performance compared with
It is good, and ferritic preparation technology is fairly simple, readily reaches the uniformity of molecular level, the temperature of synthesis is relatively
Low, the granularity prepared is smaller.This method preparation technology is simple, the cost of material is low, the complex ferrite powder of preparation
Absorbing property is good.
Brief description of the drawings
Fig. 1 is Y ferrites XRD in embodiment 1；
Fig. 2 is Y ferrites in embodiment 1：Fe mass ratioes are 100：When 0, the reflection loss figure of compound；
Fig. 3 is Y ferrites in embodiment 2：Fe mass ratioes are 80：When 20, the reflection loss figure of compound；
Fig. 4 is Y ferrites in embodiment 3：Fe mass ratioes are 60：When 40, the reflection loss figure of compound；
Fig. 5 is Y ferrites in embodiment 4：Fe mass ratioes are 40：When 60, the reflection loss figure of compound；
Fig. 6 is Y ferrites in embodiment 5：Fe mass ratioes are 0：When 100, the reflection loss figure of compound.
Embodiment
Present invention is further elaborated with reference to the accompanying drawings and examples, but is not limitation of the invention.
Embodiment 1：
Prepare Y ferrites：Fe mass ratioes are 100：0 Fe/Y ferrite composite wave-suction material steps are as follows：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratio 100：0 weighs the Y-type ferrite and Fe powder of step 1) preparation, in mortar
It is well mixed, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane, n-hexane while ball milling
Mixed-powder can be avoided to reunite or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhered on ball or chamber wall
On, the mixed-powder after ball milling is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 10 hours, ratio of grinding media to material 10：1, rotating speed is set to 380r/min.
Product test：By powder:Paraffin=4:The ratio mixing of 1 (mass ratio), be made external diameter and internal diameter be respectively 7mm and
3mm, thickness 2.5-3.5mm or so coaxial sample, sample is measured using HP8722ES microwave vector network analyzers respectively
The complex permeability and complex dielectric permittivity of 2GHz-18GHz frequency ranges, then go out single-layer absorber in thickness using following formula calculating simulation
Respectively 1.2mm, 1.6mm, 2.0mm, 2.4mm, 2.8mm, 3.0mm reflectivity R：
ε in formular、μrIt is respectively the relative dielectric constant, relative permeability and thickness of absorbing material with d, f is electromagnetic wave
Frequency, C be electromagnetic wave in the spread speed (i.e. the light velocity) of free space, j is imaginary unit,
The performance test results:
Fig. 1 show the ferritic XRDs of Y, it can be seen that sintered at 1100 DEG C can obtain within 5 hours it is pure
Ba2Co2Fe12O22Phase, as shown in Fig. 2 Y ferrites：Fe powder mass ratio 100：0 composite granule is in 2GHz-18GHz microwave bands
Thickness is respectively 6.0mm, 7.0mm, 8.0mm, reflectivity during 9.0mm, can be obtained from figure：It is minimum anti-in all thickness
Penetrate rate peak value and be respectively less than -10dB (absorptivity is more than 90%), and<- 10dB frequency range is wider, has preferable wideband effect, when
It is about -42.37dB in 13.52GHz reflections at frequencies rates peak value, i.e., when composite thickness is 7.0mm：Ferrite is in high thickness
Place, KuFrequency range (12GHz-18GHz) has good absorbing property.
Embodiment 2：
Prepare Y ferrites：Fe mass ratioes are 80：20 Fe/Y ferrite composite wave-suction material steps are as follows：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratio 80：20 weigh the Y-type ferrite and Fe powder of step 1) preparation, in mortar
It is well mixed, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane, n-hexane while ball milling
Mixed-powder can be avoided to reunite or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhered on ball or chamber wall
On, the mixed-powder after ball milling is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 15 hours, ratio of grinding media to material 15：1, rotating speed is set to 350r/min.
Product test：By powder:Paraffin=4:The ratio mixing of 1 (mass ratio), be made external diameter and internal diameter be respectively 7mm and
3mm, thickness 2.5-3.5mm or so coaxial sample, sample is measured using HP8722ES microwave vector network analyzers respectively
The complex permeability and complex dielectric permittivity of 2GHz-18GHz frequency ranges, then go out single-layer absorber in thickness using following formula calculating simulation
Respectively 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm reflectivity R：
ε in formular、μrIt is respectively the relative dielectric constant, relative permeability and thickness of absorbing material with d, f is electromagnetic wave
Frequency, C be electromagnetic wave in the spread speed (i.e. the light velocity) of free space, j is imaginary unit,
The performance test results:
As shown in figure 3, Y ferrites：Fe powder mass ratio 80：20 composite granules thickness in 2-18GHz microwave bands is distinguished
For 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm, reflectivity during 2.8mm, can be obtained from figure：In all thickness, most
Small reflectance peak is respectively less than -10dB (absorptivity is more than 90%), has preferable wideband effect, when composite thickness is 1.8
When, it is about -14.09dB in 15.04GHz reflections at frequencies rates peak value, and<- 10dB frequency range is about 4.16GHz.
Embodiment 3：
Prepare Y ferrites：Fe mass ratioes are 60：40 Fe/Y ferrite composite wave-suction material steps are as follows：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratio 60：40 weigh the Y-type ferrite and Fe powder of step 1) preparation, in mortar
It is well mixed, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane, n-hexane while ball milling
Mixed-powder can be avoided to reunite or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhered on ball or chamber wall
On, the mixed-powder after ball milling is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 10 hours, ratio of grinding media to material 20：1, rotating speed is set to 350r/min.
Product test：By powder:Paraffin=4:The ratio mixing of 1 (mass ratio), be made external diameter and internal diameter be respectively 7mm and
3mm, thickness 2.5-3.5mm or so coaxial sample, sample is measured using HP8722ES microwave vector network analyzers respectively
The complex permeability and complex dielectric permittivity of 2GHz-18GHz frequency ranges, then go out single-layer absorber in thickness using following formula calculating simulation
Respectively 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm reflectivity R：
ε in formular、μrIt is respectively the relative dielectric constant, relative permeability and thickness of absorbing material with d, f is electromagnetic wave
Frequency, C be electromagnetic wave in the spread speed (i.e. the light velocity) of free space, j is imaginary unit,
The performance test results:
As shown in figure 4, Y ferrites：Fe powder mass ratio 60：40 composite granules thickness in 2-18GHz microwave bands is distinguished
For 1.5mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, reflectivity during 2.6mm, can be obtained from figure：In KuFrequency range (12-
18GHz), it is about that (absorptivity is about by -26.75dB in 13.84GHz reflections at frequencies rates peak value when composite thickness is 1.8mm
For 99.79%), and<- 10dB frequency range is about 5.28GHz.
Embodiment 4：
Prepare Y ferrites：Fe mass ratioes are 40：60 Fe/Y ferrite composite wave-suction material steps are as follows：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratio 40：60 weigh the Y-type ferrite and Fe powder of step 1) preparation, in mortar
It is well mixed, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane, n-hexane while ball milling
Mixed-powder can be avoided to reunite or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhered on ball or chamber wall
On, the mixed-powder after ball milling is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 15 hours, ratio of grinding media to material 20：1, rotating speed is set to 320r/min.
Product test：By powder:Paraffin=4:The ratio mixing of 1 (mass ratio), be made external diameter and internal diameter be respectively 7mm and
3mm, thickness 2.5-3.5mm or so coaxial sample, sample is measured using HP8722ES microwave vector network analyzers respectively
The complex permeability and complex dielectric permittivity of 2GHz-18GHz frequency ranges, then go out single-layer absorber in thickness using following formula calculating simulation
Respectively 1.8mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm reflectivity R:
ε in formular、μrIt is respectively the relative dielectric constant, relative permeability and thickness of absorbing material with d, f is electromagnetic wave
Frequency, C be electromagnetic wave in the spread speed (i.e. the light velocity) of free space, j is imaginary unit,
The performance test results:
As shown in figure 5, Y ferrites：Fe powder mass ratio 60：40 composite granules thickness point in 2GHz-18GHz microwave bands
Not Wei 1.8mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, reflectivity when 4.0mm, 4.5mm, can be obtained from figure：When compound is thick
Spend for 2.0mm when, 11.68GHz reflections at frequencies rates peak value be about -35.47dB (absorptivity is about 99.97%), while
In all thickness, at C-band (4-8GHz), compound also has preferable absorbing property, when composite thickness is 3.0mm,
7.36GHz reflections at frequencies peak frequency is about -18.42dB (absorptivity is about 98.56%).
Embodiment 5：
Prepare Y ferrites：Fe mass ratioes are 0：100 Fe/Y ferrite composite wave-suction material steps are as follows：
1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water
In, metal salt solution is formed, and be 1 according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, shape
Into citric acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and make it that mixing is molten
The pH of liquid is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape
During gel, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；
2) according to Y ferrites：Fe powder mass ratio 0：100 weigh the Y-type ferrite and Fe powder of step 1) preparation, in mortar
It is well mixed, carry out ball milling at room temperature to mixed-powder with planetary ball mill, add n-hexane, n-hexane while ball milling
Mixed-powder can be avoided to reunite or avoid mixed-powder from being reacted with ball milling ball, chamber wall, adhered on ball or chamber wall
On, the mixed-powder after ball milling is Fe/Y ferrite composite wave-suction materials.
Heat time described in step 1) is 4-5 hours.
Desiccant gel described in step 1) is dried in vacuo at 110 DEG C, and calcination presoma is to be calcined 5 at 1100 DEG C
Hour.
Ball milling described in step 2) is agate ball of different sizes.
Ball-milling Time described in step 2) is 20 hours, ratio of grinding media to material 15：1, rotating speed is set to 300r/min.
Product test：By powder:Paraffin=4:The ratio mixing of 1 (mass ratio), be made external diameter and internal diameter be respectively 7mm and
3mm, thickness 2.5-3.5mm or so coaxial sample, sample is measured using HP8722ES microwave vector network analyzers respectively
The complex permeability and complex dielectric permittivity of 2GHz-18GHz frequency ranges, then go out single-layer absorber in thickness using following formula calculating simulation
Respectively 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3.0mm reflectivity R：
ε in formular、μrIt is respectively the relative dielectric constant, relative permeability and thickness of absorbing material with d, f is electromagnetic wave
Frequency, C be electromagnetic wave in the spread speed (i.e. the light velocity) of free space, j is imaginary unit,
The performance test results:
As shown in fig. 6, Y ferrites：Fe powder mass ratio 0：100 composite granules thickness in 2-18GHz microwave bands is distinguished
For 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm, reflectivity when 2.8mm, 3.0mm, can be obtained from figure：In all thickness
In, minimum reflectance peak value is respectively less than -10dB (absorptivity is more than 90%), has preferable wideband effect, works as composite thickness
For 2.4mm when, 8.72GHz reflections at frequencies rates peak value be about -13.04dB, and<- 10dB frequency range is about 1.28GHz.
Claims (6)
- A kind of 1. Fe/Y ferrites composite wave-suction material, it is characterised in that Y ferrites：Fe powder mass ratio is 100：0,80： 20,60：40,40：60,0:100.
- A kind of 2. preparation method for preparing Fe/Y ferrites composite wave-suction material as claimed in claim 1, it is characterised in that bag Include following steps：1) according to ferrite chemical molecular formula Ba2Co2Fe12O22Ferric nitrate, barium nitrate, cobalt nitrate are weighed, is dissolved in distilled water, shape It is 1 into metal salt solution, and according to metallic atom and citric acid mol ratio:1 weighs citric acid, is dissolved in distilled water, forms lemon Lemon acid solution, citric acid solution is added in metal salt solution and stirred 0.5 hour, then adjusted with ammoniacal liquor and cause mixed solution PH is 6-7, then heats, stirs in 80 DEG C of water-baths so that mixed solution is into transparent colloidal sol, when colloidal sol is sticky shape gel When, it is placed in Muffle furnace and sinters after gel is dried in 110 DEG C of baking ovens, Y-type ferrite powder is made；2) according to Y ferrites：Fe powder mass ratioes weigh the Y-type ferrite and Fe powder of step 1) preparation, are well mixed in mortar, Ball milling is carried out at room temperature to mixed-powder with planetary ball mill, adds n-hexane while ball milling, the mixed powder after ball milling End is Fe/Y ferrite composite wave-suction materials.
- 3. the preparation method of Fe/Y ferrites composite wave-suction material according to claim 2, it is characterised in that in step 1) Described 80 DEG C of heating water baths, mixing time are 4-5 hours.
- 4. the preparation method of Fe/Y ferrites composite wave-suction material according to claim 2, it is characterised in that in step 1) Described desiccant gel is dried in vacuo at 110 DEG C, and calcination presoma is calcined 5 hours at 1100 DEG C.
- 5. the preparation method of Fe/Y ferrites composite wave-suction material according to claim 2, it is characterised in that in step 2) Described ball milling is agate ball of different sizes.
- 6. the preparation method of Fe/Y ferrites composite wave-suction material according to claim 2, it is characterised in that in step 2) Described Ball-milling Time is -20 hours 10 hours, ratio of grinding media to material 10：1-20：1, rotating speed 300r/min-380r/min.
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| CN110257007A (en) * | 2019-07-18 | 2019-09-20 | 韦玉伍 | A kind of barium ferrite of low-density-iron powder composite wave-suction material |
| 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 |
| CN114824826A (en) * | 2022-03-25 | 2022-07-29 | 安徽吉华新材料有限公司 | YFe 4 B 4 Alloy magnetic wave-absorbing material and preparation process thereof |
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| CN109762519A (en) * | 2019-03-06 | 2019-05-17 | 武汉理工大学 | High-entropy alloy/oxide composite nano wave-absorbing material preparation method |
| CN109762519B (en) * | 2019-03-06 | 2022-01-11 | 武汉理工大学 | Preparation method of high-entropy alloy/oxide composite nano wave-absorbing material |
| CN110257007A (en) * | 2019-07-18 | 2019-09-20 | 韦玉伍 | A kind of barium ferrite of low-density-iron powder composite wave-suction material |
| 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 |
| CN114824826A (en) * | 2022-03-25 | 2022-07-29 | 安徽吉华新材料有限公司 | YFe 4 B 4 Alloy magnetic wave-absorbing material and preparation process thereof |
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