CN1793034A - Chemical preparation process for high dielectric porcelain material - Google Patents
Chemical preparation process for high dielectric porcelain material Download PDFInfo
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- CN1793034A CN1793034A CN200510016125.4A CN200510016125A CN1793034A CN 1793034 A CN1793034 A CN 1793034A CN 200510016125 A CN200510016125 A CN 200510016125A CN 1793034 A CN1793034 A CN 1793034A
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- 239000000126 substance Substances 0.000 title claims abstract description 8
- 229910052573 porcelain Inorganic materials 0.000 title claims description 15
- 238000002360 preparation method Methods 0.000 title claims description 14
- 239000000463 material Substances 0.000 title description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 66
- 101710134784 Agnoprotein Proteins 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005303 weighing Methods 0.000 claims abstract description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 9
- 229910021645 metal ion Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000498 ball milling Methods 0.000 claims description 6
- 239000011858 nanopowder Substances 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 27
- 238000005245 sintering Methods 0.000 abstract description 8
- 238000010532 solid phase synthesis reaction Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 21
- 239000007791 liquid phase Substances 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 6
- 238000003746 solid phase reaction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- -1 polyoxyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
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- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
The invention relates to a high dielectric ceramic chemical manufacture method that uses pure Ta<SUB>2</SUB>O<SUB>5</SUB>, Nb<SUB>2</SUB>O<SUB>5</SUB>, AgNO<SUB>3</SUB>, NaNO<SUB>3</SUB> as raw material according the constituent of (Ag<SUB>x</SUB>Na<SUB>1-x</SUB>)[Nb<SUB>y</SUB>Ta<SUB>1-y</SUB>]O<SUB>3</SUB> to weigh Ta<SUB>2</SUB>O<SUB>5</SUB>, Nb<SUB>2</SUB>O<SUB>5</SUB> and adding hydrofluoric acid and nitric acid, heating in water bath to dissolve, and weighing AgNO<SUB>3</SUB>, NaNO<SUB>3</SUB> adding pure citric acid to gain citric acid solution, mixing and whisking the two solutions, laying under infrared light for baking to gain the precursor of (Ag<SUB>x</SUB>Na<SUB>1-x</SUB >)[Nb<SUB>y</SUB >Ta<SUB>1-y</SUB>]O<SUB>3</SUB>, after milling sintering in high temperature, the nm powder would be gained. Comparing to solid phase synthesis, the invention could decrease consumption of the system, and make the dielectric constant be high.
Description
Technical field
The present invention relates to a kind of chemical preparation process of porcelain, particularly a kind of chemical preparation process of high-k porcelain.
Background technology
The present method for preparing the inorganic non-metallic nanoparticle has a variety of, if can roughly be divided into according to the difference of feed states: solid phase method, liquid phase method and vapor phase process.Solid phase method is that metal-salt or metal oxide are calcined after thorough mixing, the grinding according to a certain percentage, directly is ground to a kind of method of nanoparticle after the generation solid state reaction, i.e. the high energy mechanical ball milled.This method is simple to operate, cost is low.The shortcoming of this method is: owing to the wearing and tearing of ball, easily introduce impurity in powder, the skewness of gained diameter of particle in the preparation process.Utilize the ANNT system sintering temperature of traditional solid phase method preparation higher, may cause that the part of ANNT system is decomposed, form many defectives, thereby cause the loss of system to increase in system surfaces.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of chemical preparation process of high-k porcelain, purpose is to utilize liquid phase method to prepare the better ANNT porcelain of dielectric properties.
Liquid phase method is to prepare powder by the liquid solution chemical reaction, has product and forms content and can accurately control, can realize characteristics such as mixing on molecule or the atomic scale level.The powder granularity narrowly distributing, the pattern that make are regular, are the methods of present laboratory and industrial extensive employing.The synthetic powder may form serious reunion.In order to alleviate agglomeration, under the solid-liquid admixture, various foreign ions remaining in the liquid phase be removed as much as possible; And the low alcohol of usable surface warp tension ratio water, acetone and other organic solvent replaces and remains in intergranular water, obtains the lighter powder of reunion degree.Clean in the dehydration in precipitation process and at throw out, add the organic macromolecule tensio-active agent, as ammonium polyacrylate, polyoxyethylene glycol etc.Because the steric effect of organic macromolecule can alleviate the reunion degree.The method that adopts liquid phase method to prepare nano-powder mainly contains the precipitator method, spray heating decomposition, sol-gel processing and hydrothermal method etc.It mainly is applicable to preparation nano-oxide and multicomponent mixture material.
The chemical preparation process of high-k porcelain of the present invention comprises the steps:
1. with analytically pure Ta
2O
5, Nb
2O
5, AgNO
3, NaNO
3Be raw material, by (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Composition takes by weighing Ta by specified proportion
2O
5, Nb
2O
5, add hydrofluoric acid 100mL, nitric acid 100mL, heating in water bath 6～7h makes Ta
2O
5, Nb
2O
5Dissolving fully;
2. the analytical pure citric acid (in the metal ion total mole number) that adds 1: 1.5 to dissolving fully, has obtained the citric acid solution of Nb, Ta;
3. take by weighing AgNO by proportioning
3, NaNO
3, adding distil water dissolves both, adds 1: 1.5 analytical pure citric acid (in the metal ion total mole number), mixes, and has obtained the citric acid solution of Ag, Na, and two kinds of solution are mixed, and induction stirring 2-4h has obtained colourless transparent solution;
4. be placed on baking under the infrared lamp, slowly evaporating solvent obtains white powder agglomates shape solid behind 5～6h, and this is (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Presoma;
5. presoma is through ball mill ball milling 3h, and the speed by 2 ℃/min is warming up to 400 ℃ again, insulation 2h, and then, promptly obtain desired nano-powder through 700～950 ℃ of calcination 2h.
High-k porcelain of the present invention, the molar content of each component is:
AgNO
3 40-45％
NaNO
3 5-10％
Nb
2O
5 30-40％
Ta
2O
5 10-20％
Be preferably:
AgNO
3 42-45％
NaNO
3 35-8％
Nb
2O
5 30-35％
Ta
2O
5 15-20％
Optimum value is:
AgNO
3 45％
NaNO
3 35％
Nb
2O
5 35％
Ta
2O
5 15％
Owing to the sintering temperature of the ANNT system that utilizes the solid phase method preparation is higher, may cause that the part of ANNT system is decomposed, form many defectives in system surfaces, thereby cause the loss of system to increase.Liquid phase method can make the size of powder in nanometer, the dimensional effect of nano particle and surface effects, sintering temperature is reduced, sintering rate is accelerated, so just effectively suppressed the generation of system defect, also controlled simultaneously the granularity and the particulate homogeneity of crystal grain, liquid-phase synthesis process can mix raw material at molecule or atomic level level, the more even stoichiometric ratio that more meets of this mixing.So compare with solid phase method, the crystal grain of the ceramic sample that liquid phase method is prepared is more even, particle diameter is littler, dielectric properties are better.Liquid phase synthesizing method can make system improve the sintering characteristic and the microtexture of system effectively at the horizontal uniform mixing of molecular level, reduces the sintering temperature of system, the defective in the minimizing system, thus improve the dielectric properties of system.Utilize the crystal grain of the prepared sample of solid phase method bigger, and grain size skewness, and utilize the average grain size of the prepared sample of liquid phase method less, greatly about about hundreds of nanometers, and it is very even to distribute, therefore liquid phase method has improved the structural performance of system, is the reason place of the further raising of system's dielectric properties.
Compare with solid-phase synthesis, liquid-phase synthesis process of the present invention can obviously reduce the loss of system, makes the specific inductivity of system higher, and the absolute value of temperature coefficient of capacitance is little.When the Nb/Ta ratio was 0.8/0.2 and 0.7/0.3, the specific inductivity of system reached 540 and 538, and dielectric loss is less, and temperature coefficient of capacitance reaches in the 0 ± 30ppm/ ℃ of scope, had obtained the temperature profile of (high frequency heat stable) NP0.
Embodiment
Comparative Examples 1
Adopt traditional solid phase reaction method (Nb/Ta 0.8/0.2)
According to corresponding ratio with Ag
2O:20g, Na
2CO
3: 1.5g, Nb
2O
5: 21g, Ta
2O
5: 7g carries out ball milling, forms frit 900 ℃ of following pre-burnings again.Frit is added tackiness agent paraffin, dry-pressing formed, sintering in 1100-1150 ℃ of scope.
Comparative Examples 2
Adopt traditional solid phase reaction method (Nb/Ta 0.7/0.3)
Take by weighing Ag according to corresponding ratio
2O:20g, Na
2CO
3: 1.5g, Nb
2O
5: 19g, Ta
2O
5: 13g, other are identical with Comparative Examples 1, produce the porcelain of Nb/Ta 0.7/0.3.
Comparative Examples 3
Adopt traditional solid phase reaction method (Nb/Ta 0.6/0.4)
Take by weighing Ag according to corresponding ratio
2O:20g, Na
2CO
3: 1.5g, Nb
2O
5: 16g, Ta
2O
5: 18g, other are identical with Comparative Examples 1, produce the porcelain of Nb/Ta 0.6/0.4.
Embodiment 1
Adopt liquid phase method of the present invention (Nb/Ta 0.8/0.2)
With analytically pure Ta
2O
5, Nb
2O
5, AgNO
3, NaNO
3Be raw material, by (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Composition takes by weighing Ta by specified proportion
2O
5: 21g, Nb
2O
5: 7g, add hydrofluoric acid 100mL, nitric acid 100mL, heating in water bath 6h makes Ta
2O
5, Nb
2O
5Dissolving fully.The analytical pure citric acid (in the metal ion total mole number) that adds 1: 1.5 to dissolving fully, has obtained the citric acid solution of Nb, Ta.Take by weighing AgNO by proportioning
3: 29g, NaNO
3: 2.4g, adding distil water dissolves both, adds 1: 1.5 analytical pure citric acid (in the metal ion total mole number), mixes, obtained the citric acid solution of Ag, Na, two kinds of solution are mixed, and induction stirring 3h has obtained colourless transparent solution, be placed on baking under the 250W infrared lamp, slowly evaporating solvent obtains white powder agglomates shape solid behind the 5h, and this is (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Presoma.Presoma is through ball mill ball milling 3h, and the speed by 2 ℃/min is warming up to 400 ℃ again, insulation 2h.And then, promptly obtain desired nano-powder through 780 ℃ of calcination 2h.
Embodiment 2
Adopt liquid phase method of the present invention (Nb/Ta 0.7/0.3)
With analytically pure Ta
2O
5, Nb
2O
5, AgNO
3, NaNO
3Be raw material, by (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Composition takes by weighing Ta by specified proportion
2O
5: 13g, Nb
2O
5: 19g, add hydrofluoric acid 100mL, nitric acid 100mL, heating in water bath 7h makes Ta
2O
5, Nb
2O
5Dissolving fully.The analytical pure citric acid (in the metal ion total mole number) that adds 1: 1.5 to dissolving fully, has obtained the citric acid solution of Nb, Ta.Take by weighing AgNO by proportioning
3: 29g, NaNO
3: 2.4g, adding distil water dissolves both, adds 1: 1.5 analytical pure citric acid, mixes, obtained the citric acid solution of Ag, Na, two kinds of solution are mixed, and induction stirring 3h has obtained colourless transparent solution, be placed on baking under the 250W infrared lamp, slowly evaporating solvent obtains white powder agglomates shape solid behind the 6h, and this is (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Presoma.Presoma is through ball mill ball milling 3h, and the speed by 2 ℃/min is warming up to 400 ℃ again, insulation 2h.And then, promptly obtain desired nano-powder through 700 ℃ of calcination 2h.
Embodiment 3
Adopt liquid phase method of the present invention (Nb/Ta 0.6/0.4)
With analytically pure Ta
2O
5, Nb
2O
5, AgNO
3, NaNO
3Be raw material, by (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Composition takes by weighing Ta by specified proportion
2O
5: 18g, Nb
2O
5: 16g, add hydrofluoric acid 100mL, nitric acid 100mL, heating in water bath 6h makes Ta
2O
5, Nb
2O
5Dissolving fully.The analytical pure citric acid (in the metal ion total mole number) that adds 1: 1.5 to dissolving fully, has obtained the citric acid solution of Nb, Ta.Take by weighing AgNO by proportioning
3: 29g, NaNO
3: 2.4g, adding distil water dissolves both, adds 1: 1.5 analytical pure citric acid, mixes, obtained the citric acid solution of Ag, Na, two kinds of solution are mixed, and induction stirring 2h has obtained colourless transparent solution, be placed on baking under the 250W infrared lamp, slowly evaporating solvent obtains white powder agglomates shape solid behind the 5h, and this is (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Presoma.Presoma is through ball mill ball milling 3h, and the speed by 2 ℃/min is warming up to 400 ℃ again, insulation 2h.And then, promptly obtain desired nano-powder through 900 ℃ of calcination 2h.
Porcelain among above-mentioned Comparative Examples and the embodiment is carried out the test of following electrical property, wherein
1. the specific inductivity of disc medium calculates
Utilize the electrical capacity C of HP4278A and HP4285A farad bridge measure sample, according to the specific inductivity of formula (2-1) calculation sample.
Wherein: C is the electrical capacity of sample, and unit is pF.
D is the diameter of sample, and unit is cm.
D is the thickness of sample, and unit is cm.
2. the calculating of the test of sample temperature characteristic and temperature factor
Utilize WAYNE KEER Multi Bridge 6425 testing tools and the high cold cycle incubator of GZ-ESPEC MC-710P to cooperatively interact, measure the electrical capacity of sample under the differing temps, finish the test of sample temperature characteristic.The temperature coefficient of capacity of material calculates according to following formula:
Wherein: T
0-room temperature (25 ℃)
T
1-probe temperature (85 ℃)
C
0-sample is at T
0The time electrical capacity (PF)
C
1-sample is T in temperature
1The time electrical capacity (PF)
3, the calculating of the measurement of sample insulation resistance and material bodies resistivity
Utilize the insulation resistance of ZC36 type ultra-high resistance tester measure sample, utilize following formula to calculate the body resistivity ρ of material
v:
Wherein: R
iThe insulation resistance of-sample (Ω)
The diameter of D-sample (cm)
D-sample thickness (cm)
4, the measurement of sample dielectric loss
Utilize the dielectric loss tg δ (1MHz) of HP4278A and HP4285A farad bridge measure sample.Gained the results list is as follows:
The different synthetic methods of table 1 are to the influence of system's dielectric properties
| Nb/Ta | Synthetic method | Loss tangent tg δ (* 10 -4) (1MHz) | DIELECTRIC CONSTANT (1MHz) | Temperature coefficient of capacity α c(ppm/℃) | Insulation resistivity ρ v(Ω·cm) |
| 0.8/0.2 | Solid phase | 6.5 | 512 | 440 | ＞10 12 |
| Liquid phase | 4.2 | 540 | 20 | ＞10 12 | |
| 0.7/0.3 | Solid phase | 7.5 | 460 | -421 | ＞10 12 |
| Liquid phase | 4.0 | 538 | -6 | ＞10 12 | |
| 0.6/0.4 | Solid phase | 8.0 | 415 | -760 | ＞10 12 |
| Liquid phase | 3.0 | 530 | -460 | ＞10 12 |
Claims (4)
1. the chemical preparation process of a high-k porcelain comprises the steps:
(1) with (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Composition takes by weighing Ta by specified proportion
2O
5, Nb
2O
5, add hydrofluoric acid 100mL, nitric acid 100mL, heating in water bath 6～7h makes Ta
2O
5, Nb
2O
5Dissolving fully;
(2) the analytical pure citric acid (in the metal ion total mole number) that added 1: 1.5 extremely dissolves fully, has obtained the citric acid solution of Nb, Ta;
(3) take by weighing AgNO by proportioning
3, NaNO
3, adding distil water dissolves both, adds 1: 1.5 analytical pure citric acid (in the metal ion total mole number), mixes, and has obtained the citric acid solution of Ag, Na, and two kinds of solution are mixed, and induction stirring 2-4h has obtained colourless transparent solution;
(4) be placed on baking under the infrared lamp, slowly evaporating solvent obtains white powder agglomates shape solid behind 5～6h, and this is (Ag
xNa
1-x) [Nb
yTa
1-y] O
3Presoma;
(5) presoma is through ball mill ball milling 3h, and the speed by 2 ℃/min is warming up to 400 ℃ again, insulation 2h, and then, promptly obtain desired nano-powder through 700～950 ℃ of calcination 2h.
2. a porcelain preparation method as claimed in claim 1 is characterized in that the molar content of described each component is
AgNO
3 340-45％
NaNO
3 35-10％
Nb
2O
5 530-40％
Ta
2O
5 10-20％
3. a porcelain preparation method as claimed in claim 2 is characterized in that the molar content of described each component is
AgNO
3 42-45％
NaNO
3 5-8％
Nb
2O
5 30-35％
Ta
2O
5 15-20％
4. a porcelain preparation method as claimed in claim 3 is characterized in that the molar content of described each component is
AgNO
3 45％
NaNO
3 5％
Nb
2O
5 35％
Ta
2O
5 15％
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510016125.4A CN1793034A (en) | 2005-11-16 | 2005-11-16 | Chemical preparation process for high dielectric porcelain material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510016125.4A CN1793034A (en) | 2005-11-16 | 2005-11-16 | Chemical preparation process for high dielectric porcelain material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1793034A true CN1793034A (en) | 2006-06-28 |
Family
ID=36804699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510016125.4A Pending CN1793034A (en) | 2005-11-16 | 2005-11-16 | Chemical preparation process for high dielectric porcelain material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1793034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517787A (en) * | 2020-04-17 | 2020-08-11 | 上海工程技术大学 | Silver niobate-based antiferroelectric ceramic material and preparation method and application thereof |
| CN114956817A (en) * | 2022-06-17 | 2022-08-30 | 陕西科技大学 | Silver-sodium niobate based lead-free antiferroelectric ceramic material with high energy storage density and preparation method thereof |
-
2005
- 2005-11-16 CN CN200510016125.4A patent/CN1793034A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517787A (en) * | 2020-04-17 | 2020-08-11 | 上海工程技术大学 | Silver niobate-based antiferroelectric ceramic material and preparation method and application thereof |
| CN114956817A (en) * | 2022-06-17 | 2022-08-30 | 陕西科技大学 | Silver-sodium niobate based lead-free antiferroelectric ceramic material with high energy storage density and preparation method thereof |
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