CN108046795B - High-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material - Google Patents
High-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 40
- 229910052454 barium strontium titanate Inorganic materials 0.000 title claims abstract description 28
- 239000003989 dielectric material Substances 0.000 title claims abstract description 24
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 229910000323 aluminium silicate Inorganic materials 0.000 title claims abstract description 22
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000011812 mixed powder Substances 0.000 claims abstract description 26
- 238000000498 ball milling Methods 0.000 claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 13
- 229910020472 SiO7 Inorganic materials 0.000 claims abstract description 12
- 229910010252 TiO3 Inorganic materials 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910000018 strontium carbonate Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 12
- 229910052788 barium Inorganic materials 0.000 claims description 11
- 229910052712 strontium Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Inorganic materials [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 239000003814 drug Substances 0.000 description 8
- 229940079593 drug Drugs 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 229910010272 inorganic material Inorganic materials 0.000 description 4
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000013329 compounding Methods 0.000 description 2
- 229910002715 % Ba0.5Sr0.5 Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000382 optic material Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material is characterized in that the high-dielectric adjustable barium strontium titanate based ceramic dielectric materialThe general formula of the components of the composite aluminosilicate ceramic dielectric material is as follows: (1-m%) of Ba1‑zSrzTiO3+m%(Sr1‑xBax)2Al2SiO7Wherein x is greater than or equal to 0 and less than or equal to 0.9; the value range of z is more than or equal to 0.4 and less than or equal to 0.6; the value range of m is between 10 and 90 percent by weight, and BaCO is selected3、SrCO3、TiO2、SiO2And Al2O3The powder is prepared into mixed powder through batching, ball milling, drying and high-temperature presintering, and the mixed powder is presintered at the temperature of 550-600 ℃ after tabletting and then is calcined at the temperature of 1200-1500 ℃. The high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material prepared by the invention is continuously adjustable in a wider range and has high comprehensive performance.
Description
Technical Field
The invention belongs to the technical field of electronic materials and devices, and particularly relates to a high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material and a preparation method thereof.
Background
The perovskite structure barium strontium titanate ferroelectric material with high dielectric constant, low dielectric loss and non-linear adjustable dielectric constant and adjustable Curie temperature has attracted attention increasingly as microwave adjustable device, especially as microwave phase shifter. However, the BST ceramic material with high dielectric constant is difficult to satisfy the requirements of impedance matching and high power inside the excitation source, which greatly limits the application in the field of microwave tunable devices.QThe value is the main parameter for measuring the inductive device,Qthe value is the ratio of the inductance exhibited by the inductor when operated at an ac voltage of a certain frequency to its equivalent loss resistance. Of inductorsQThe higher the value, the smaller its losses and the higher the efficiency. The dielectric constant of barium strontium titanate BST material varies with the applied DC electric field, and when the voltage is changed from V (0) to V (app), the dielectric constant will produce an increment Δr=[ r(0)– r(app) ]The increment is compared with r(0)The percentage of the ratio (c) becomes adjustable, i.e. ready to useTunability(abbreviated as T) = [, ] r(0)– r(app) ]/ r(0)X 100%. While applying light (microwave) with a special frequency will generate corresponding differential phase shift to achieve the purpose of changing phase. Materials with such properties become electro-optic materials. The ability of the phase shifter to change the phase angle is mainly determined by the adjustability, so high adjustability is very necessary for the phase shifter material, and therefore, how to prepare the phase shifter with low dielectric constant and high dielectric constant is very importantQThe material system with high dielectric adjustable characteristic is a technical difficulty, ceramic compounding is one of the most common and effective means for modifying electronic ceramic materials all the time, and materials with different mass ratios are compounded and enter the lattice structure of a crystal material to different degrees and different modes to cause the change of the microstructure of the material, so that the related properties of the material are effectively adjusted and improved. In the prior art, researchers develop ceramic dielectric material systems with low dielectric constant, high Q value and certain dielectric adjustable characteristics by compounding MgO, MgAl2O6 and the like with barium strontium titanate with different mass ratios. Xiujian Chou et al, college university, have systematically studied barium strontium titanate composite magnesium titanate with different quantitative ratios to obtain microwave ceramic dielectric material (A)r=190,Q=189,T=18.1). However, the overall performance of the system is yet to be further improved. The research on the microwave dielectric adjustable characteristic of the barium strontium titanate composite aluminosilicate material has not been reported yet.
Disclosure of Invention
The invention aims to provide a preparation method of a high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material which can overcome the defects and has high comprehensive performance, and the technical scheme is as follows:
the high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following components in the general formula: (1-m%) of Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7Wherein the value range of x is more than or equal to 0 and less than or equal to x0.9, z is not less than 0.4 and not more than 0.6, m is not less than 10wt% and not more than m and not more than 90wt%, and the preparation method comprises the following steps:
(1) selecting BaCO3Powder and SrCO3Powder, TiO2Powder, SiO2Powder and Al2O3Powder as main material according to (1-m%) Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7Proportioning the Ba, Sr, Ti, Si and Al according to the stoichiometric ratio, putting the proportioned raw materials into a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1000-1300 ℃ for 2-4 h, and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1), carrying out ball milling for 20-24 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 8-10 wt% of polyvinyl alcohol aqueous solution, and then pressing the mixture under the pressure of 10-100 MPa to prepare a ceramic green sheet;
(4) and (3) carrying out heat preservation on the ceramic green sheets at the temperature of 550-600 ℃ for 4-10 hours, carrying out glue discharging treatment, and sintering at the temperature of 1200-1500 ℃ for 4-10 hours to obtain the high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material.
The high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following advantages:
(1) the Curie temperature of the ceramic material system can be varied with Ba/Sr and (1-m%) Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7(x = 0-0.9; z = 0.4-0.6; 10wt% to m% to 90 wt%) over a wide range, and the structure and performance of the material system can be adjusted according to the working temperature requirement of the designed adjustable microwave device;
(2) by Ba/Sr and (1-m%) Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7(x = 0-0.9; z = 0.4-0.6; m% =10wt% -90 wt%) component proportion, the dielectric constant of the ceramic dielectric material can be continuously adjusted, a material system with a serialized dielectric constant can be obtained, and the application range of the material is widened;
(3) has a heightQThe value (low dielectric loss) (Q value can reach 462), the dielectric constant (178) is low, the adjustable rate (the adjustable rate can reach 21%) is high, and the dielectric constant is serialized (namely, the dielectric constant can adjust the mass percent of the components by changing the value of m and adjust the ratio of Ba and Sr along with the change of x and z values so as to achieve the controllability of the dielectric constant);
(4) its component is Ba1-zSrzTiO3Phase sum (Sr)1-xBax)2Al2SiO7Coexisting, having excellent microwave dielectric properties;
(5) the traditional electronic ceramic preparation process is adopted, the process is simple, the cost is low, the material system is environment-friendly, has no toxic or side effect, and the performance is excellent, so that the electronic ceramic is suitable for materials of adjustable microwave components such as an electric tuning microwave resonator, a filter, a microwave dielectric antenna and the like.
Detailed Description
Example 1
(1) According to 70% Ba0.6Sr0.4TiO3+30%Sr2Al2SiO7The stoichiometric ratios of Ba, Sr, Ti, Si and Al in the Ba, Sr, Ti, Si and Al are respectively called BaCO311.680g、SrCO313.083g、TiO27.871g 、Al2O32.488g and SiO21.484g, placing the prepared raw materials in a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1000 ℃, 1300 ℃ and 4 hours, and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1) for ball milling for 20 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 8% of polyvinyl alcohol aqueous solution in percentage by weight, and then pressing the mixture under the pressure of 10MPa to prepare a ceramic green sheet;
(4) and (3) carrying out heat preservation on the ceramic green sheet at the temperature of 550 ℃ for 4 hours for glue removal treatment, and then sintering at the temperature of 1200 ℃ for 4 hours to obtain the high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material.
BaCO used for experiment399.8% purity, Alfa Aesar China LTD. production, SrCO399.0% purity, Alfa Aesar China LTD. production, TiO2Purity of 99.9%, produced by Fushan high-tech inorganic materials Co., Ltd., Al2O3Purity 99.9%, produced by chemical reagents of national drug group Limited, SiO2The purity is 99.9 percent, and the product is produced by chemical reagents of national drug group, Inc.;
the prepared high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following properties: curie temperature Tc (. degree. C.) @10kHz is-42, and dielectric constantr(room temperature 20 ℃ C.) with a dielectric loss tan of 178 at 10kHzAt room temperature of 20 deg.C, 0.0001 @10kHz and dielectric tunabilityT(30 kV/cm, 20 ℃) 21% at @10kHz, 3370% at a resonance frequency (MHz), and a dielectric constant at resonancerAt the end of the line, at 163,Qthe value is 462.
Example 2
(1) According to 50% Ba0.5Sr0.5TiO3+50%(Sr0.92Ba0.08)2Al2SiO7The stoichiometric ratios of Ba, Sr, Ti, Si and Al in the Ba, Sr, Ti, Si and Al are respectively called BaCO38.376g、SrCO316.278g、TiO25.756g 、Al2O34.058g and SiO22.391g, placing the prepared raw materials in a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1100 ℃, 1250 ℃, 4 h and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1) for ball milling for 21 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 8.5 percent of polyvinyl alcohol aqueous solution by weight percent, and then pressing the mixture into ceramic green sheets under the pressure of 30 MPa;
(4) and (3) carrying out heat preservation on the ceramic green sheet at the temperature of 560 ℃ for 6 hours for glue removal treatment, and then sintering at the temperature of 1300 ℃ for 6 hours to obtain the high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material.
BaCO used for experiment399.8% purity, Alfa Aesar China LTD. production, SrCO399.0% purity, Alfa Aesar China LTD. production, TiO2Purity of 99.9%, produced by Fushan high-tech inorganic materials Co., Ltd., Al2O3Purity 99.9%, produced by chemical reagents of national drug group Limited, SiO2The purity is 99.9 percent, and the product is produced by chemical reagents of national drug group, Inc.;
the prepared high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following properties: curie temperature Tc (. degree. C.) @10kHz of-60, dielectric constantr(room temperature 20 ℃ C.) with a dielectric loss tan of 157 at 10kHzAt room temperature of 20 deg.C, 0.0001 @10kHz and dielectric tunabilityT(30 kV/cm, 20 ℃) 16% at @10kHz, 2890% at a resonance frequency (MHz), and a dielectric constant at resonancerIn order to be 144 a, the first,Qthe value is 431.
Example 3
(1) According to 90% Ba0.6Sr0.4TiO3+10%Sr2Al2SiO7The stoichiometric ratios of Ba, Sr, Ti, Si and Al in the Ba, Sr, Ti, Si and Al are respectively called BaCO315.017g、SrCO39.972g、TiO210.120g 、Al2O30.829g and SiO20.495g, putting the prepared raw materials into a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1000 ℃, 1300 ℃ and 2 hours, and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1) for ball milling for 22 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 9 wt% of polyvinyl alcohol aqueous solution, and then pressing the mixture under the pressure of 50MPa to prepare a ceramic green sheet;
(4) and (3) carrying out heat preservation on the ceramic green sheet at 580 ℃ for 8 hours for glue removal treatment, and then sintering at 1400 ℃ for 8 hours to obtain the high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material.
BaCO used for experiment399.8% purity, Alfa Aesar China LTD. production, SrCO399.0% purity, Alfa Aesar China LTD. production, TiO2Purity of 99.9%, produced by Fushan high-tech inorganic materials Co., Ltd., Al2O3Purity 99.9%, produced by chemical reagents of national drug group Limited, SiO2The purity is 99.9 percent, and the product is produced by chemical reagents of national drug group, Inc.;
the prepared high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following properties: curie temperature Tc (. degree. C.) @10kHz is-7, and dielectric constantr(room temperature 20 ℃ C.) 3521 @10kHz, and a dielectric loss tan(room temperature 20 ℃) 0.0007 @10kHz, dielectric tunabilityT(30 kV/cm, 20 ℃) 35% at @10kHz, 1125% at the resonance frequency (MHz), and the dielectric constant at resonancerIn order to be 2631, there is provided,Qthe value is 127.
Example 4
(1) According to 10% of Ba0.4Sr0.6TiO3+90%(Sr0.1Ba0.9)2Al2SiO7The stoichiometric ratios of Ba, Sr, Ti, Si and Al in the Ba, Sr, Ti, Si and Al are respectively called BaCO323.864g、SrCO33.955g、TiO21.179g 、Al2O36.007g and SiO23.540g, placing the prepared raw materials in a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1200 ℃, 1250 ℃ for 3 h, and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1) to perform ball milling for 24 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 10wt% of polyvinyl alcohol aqueous solution, and then pressing the mixture under the pressure of 100MPa to prepare a ceramic green sheet;
(4) and (3) carrying out heat preservation on the ceramic green sheet at the temperature of 600 ℃ for 10 hours for glue removal treatment, and then sintering at the temperature of 1500 ℃ for 10 hours to obtain the high-dielectric adjustable barium strontium titanate based composite aluminosilicate ceramic dielectric material.
BaCO used for experiment399.8% purity, Alfa Aesar China LTD. production, SrCO399.0% purity, Alfa Aesar China LTD. production, TiO2Purity of 99.9%, produced by Fushan high-tech inorganic materials Co., Ltd., Al2O3Purity 99.9%, produced by chemical reagents of national drug group Limited, SiO2The purity is 99.9 percent, and the product is produced by chemical reagents of national drug group, Inc.;
the prepared high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material has the following properties: curie temperature Tc (. degree. C.) @10kHz is-47, and dielectric constantrAt room temperature 20 ℃ 97 @10kHz, and a dielectric loss tan(room temperature 20 ℃) 0.0003 @10kHz, dielectric tunabilityT(30 kV/cm, 20 ℃) 11% at @10kHz, 1528% at the resonance frequency (MHz), and a dielectric constant at resonancerIn the order of 93 a, the number of,Qthe value was 154.
Claims (1)
1. The high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material is characterized in that the general formula of the components of the high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material is as follows: (1-m%) of Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7Wherein x is more than or equal to 0 and less than or equal to 0.9, z is more than or equal to 0.4 and less than or equal to 0.6, and m is more than or equal to 10 and less than or equal to 90 weight percent, and the preparation method comprises the following steps:
(1) selecting BaCO3Powder and SrCO3Powder, TiO2Powder, SiO2Powder and Al2O3Powder as main material according to (1-m%) Ba1-zSrzTiO3+m%(Sr1-xBax)2Al2SiO7Proportioning the Ba, Sr, Ti, Si and Al according to the stoichiometric ratio, putting the proportioned raw materials into a nylon ball milling tank, adding zirconia balls and ball milling media, carrying out ball milling, discharging, drying, pre-sintering at 1000-1300 ℃ for 2-4 h, and grinding to obtain mixed powder;
(2) adding zirconia balls and absolute ethyl alcohol or deionized water into the mixed powder in the step (1), carrying out ball milling for 20-24 hours, discharging, drying and sieving to obtain mixed powder 2;
(3) uniformly mixing and granulating the mixed powder 2 in the step (2) with 8-10 wt% of polyvinyl alcohol aqueous solution, and then pressing the mixture under the pressure of 10-100 MPa to prepare a ceramic green sheet;
(4) and (3) carrying out heat preservation on the ceramic green sheets at the temperature of 550-600 ℃ for 4-10 hours, carrying out glue discharging treatment, and sintering at the temperature of 1200-1500 ℃ for 4-10 hours to obtain the high-dielectric adjustable barium strontium titanate-based composite aluminosilicate ceramic dielectric material.
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