CN104609861A - Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method - Google Patents
Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method Download PDFInfo
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Abstract
The invention belongs to the technical field of electronic ceramic preparation and application, and discloses a method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing the sol-gel method. The method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder includes the following steps: (1), preparing a citric acid water solution with Zn and Ba ions; (2), preparing a citric acid water solution with Nb ions; (3) synthesizing Ba(Zn1/3Nb2/3)O3 ceramic nanometer precursor. According to the invention, oxides and inorganic nitrate with lower price are used as raw materials, so that expensive metal alkoxide is not used, the synthesized powder is low in synthesis temperature, uniform in ceramic particles, good in dispersity and pure in phase, fine doping modification of various elements can be implemented easily; the obtained powder has the remarkable advantages of the nano particle size lower than 100 nm, high specific surface energy, higher activity, and the like, follow-up low temperature sintering is realized, and the LTCC application requirements are expected to be met.
Description
Technical field
The invention belongs to electronic ceramic preparation and applied technical field, particularly relate to one and utilize wet chemical technology fine synthesis Ba (Zn
1/3nb
2/3) O
3media ceramic Nano-powder body method.
Background technology
In recent years, along with the fast development of micro-wave communication cause, the fields such as mobile communication, automobile telephone, telestar, military radar, global positioning system (GPS) and portable phone increase day by day to the microwave circuit of miniaturization, high performance and the demand of microwave device.This just requires to continually develop the type material with high-performance more.The very high frequency of microwave signal, wavelength is extremely short, and information content is comparatively large, has stronger directivity, penetrance and receptivity, and microwave equipment can realize the confidentiality of communication, is beneficial to the application of communication technical field and military field.Realize the miniaturization of microwave equipment, the approach of high stability and cheapness is the integrated necessary of microwave circuit.And microwave dielectric material is the critical material manufacturing these devices and can meet performance requriements well.
Have complex perovskite structure ceramic compound A (B '
1/3b "
2/3) O
3(A=Ba, Sr; B '=Mg, Zn, Co, Ni, Mn; B "=Nb and Ta) obtain and pay close attention to comparatively widely.Dielectric material based on this ceramic compound can meet the requirement that specific inductivity is large, quality factor q is high and temperature coefficient of resonance frequency is low preferably, and the dielectric material that can be used as on wave filter, resonator is applied in microwave frequency range.What at present both at home and abroad research was more is A (B '
1/3b "
2/3) O
3series compound, but due to Ta
2o
5costly, require purity higher and system sintering temperature too high (1500 DEG C-1600 DEG C), and limit its large-scale promotion application; And Nb
2o
5be then a kind of compound of cheap wide material sources, utilize it to replace Ta
2o
5also the medium ceramic material of better performances can be obtained under suitable condition.
Domestic and international research shows Ba (Zn
1/3nb
2/3) O
3(BZN) there is cubic perovskite structure, lattice parameter a=0.4094nm under room temperature, temperature coefficient of resonance frequency τ
f=+ 30 × 10
-6/ DEG C, ε
r=41, Q=5400, as can be seen here, BZN is a kind of microwave dielectric ceramic materials having very much development potentiality.At present about this architectural study substantially based on solid reaction process, solid phase synthesis and sintering temperature higher, be unfavorable for following LTCC application demand.At present about this system Ba (Zn
1/3nb
2/3) O
3microwave-medium ceramics adopts wet chemical technology to carry out fine synthesis and there is not yet report both at home and abroad always.
Summary of the invention
The object of the invention is based on following LTCC (Low Temperature Co-fired Ceramic) LTCC Technology application demand, overcome the shortcoming of conventional solid synthesis difficulty; Provide one and utilize sol-gel method fine synthesis Ba (Zn
1/3nb
2/3) O
3media ceramic Nano-powder body method, adopts sol-gel method fine synthesis Ba (Zn
1/3nb
2/3) O
3ceramic powder, have that synthesis temperature is low, ceramic particle evenly mutually pure, the powder of (lower than 100nm), good dispersity, thing there is nano particle size and there is high-ratio surface energy, present the significant advantages such as greater activity, follow-up low-temperature sintering can being realized, being expected to the candidate material providing new for meeting LTCC application demand.
For solving the problems of the technologies described above, technical scheme of the present invention is:
1, water-soluble sol gel process fine synthesis ternary Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic Nano-powder body method, is characterized in that: comprise the following steps:
(1) aqueous citric acid solution of Zn and Ba ion is prepared;
(2) aqueous citric acid solution of Nb is prepared;
(3) Ba (Zn
1/3nb
2/3) O
3the synthesis of microwave-medium ceramics nanometer presoma;
A Zn and Ba aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, and then add polyoxyethylene glycol and carry out esterification, the molar weight that polyoxyethylene glycol adds be the 4-6 of citric acid doubly; Heat, stir, obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution that step (a) is prepared by () is placed in drying in oven, shrinks and forms xerogel;
C the xerogel of step (b) is placed in High Temperature Furnaces Heating Apparatus 850 DEG C of calcination processing by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder.
2, according to claim 1ly sol-gel method fine synthesis nanometer Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the aqueous citric acid solution of described step (1) preparation Zn and Ba ion comprises the following steps:
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, adjustment Ba/Zn/Nb element mol ratio is 3/1+x/2, and wherein x is: 0 < x0.05; First take zinc nitrate and nitrate of baryta, be dissolved in appropriate amount of deionized water, form colourless transparent solution;
B () takes citric acid, the mol ratio of citric acid be zinc nitrate and nitrate of baryta 4-6 doubly, add in above-mentioned solution, impel citric acid and Zn and Ba ion forming complex, make water white transparency Zn and Ba ion aqueous citric acid solution.
3, according to claim 1ly sol-gel method fine synthesis nanometer Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the aqueous citric acid solution of described step (2) preparation Nb comprises the following steps:
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, takes niobium oxides, is placed in ceramic dielectic reactor, seal after adding hydrofluoric acid, then utilize baking oven to carry out pyroprocessing 1-3 hour, accelerate dissolution, form the HF acid solution of water white transparency Nb;
B, in the HF acid solution of () above-mentioned Nb, adding ammoniacal liquor adjustment pH value is 8-10, impels Nb to complete precipitation with the form of niobium hydroxide;
C () filters above-mentioned precipitation, cleaning is placed in lemon aqueous acid for several times and carries out magnetic agitation repeatedly, forms the white citric acid suspension liquid that is uniformly dispersed, and wherein adding citric acid molar weight is metal ion total amount 4-8 times;
D above-mentioned white citric acid suspension liquid is placed in the sealing of ceramic dielectic autoclave by (), then baking oven is utilized to carry out pyroprocessing 3-6 hour, impel and react, impel citric acid and Nb to carry out reacting forming complex dissolving, finally form the aqueous citric acid solution of water white transparency Nb.
4, according to claim 3ly sol-gel method fine synthesis nanometer Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the described step (a) in described step (2) is 100-150 DEG C with the temperature of the baking oven pyroprocessing in (d).
5, according to claim 1ly sol-gel method fine synthesis nanometer Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: described step (3) Ba (Zn
1/3nb
2/3) O
3synthesis and the ceramic preparation of microwave-medium ceramics nanometer presoma comprise the following steps:
A Zn and Ba ion aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, then add polyoxyethylene glycol and carry out esterification, the molar weight that polyoxyethylene glycol adds is 4-6 times of Citric Acid Dosage total amount; By water-bath 60-90 DEG C of heating 8-20 hour, and constantly stir, ensure evenly, to obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution prepared by step (3) (a) is placed in 60-90 DEG C of oven dry in baking oven by (), shrink and form xerogel;
C the xerogel of step (3) (b) is placed in retort furnace in 850 DEG C of calcinings 1 hour by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder.
6, according to claim 5ly sol-gel method fine synthesis nanometer Ba (Zn is utilized
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the temperature of the baking oven hyperthermia drying in described step (b) is 60-90 DEG C, and the calcining temperature in step (c) is 850 DEG C.
The invention has the beneficial effects as follows: the present invention adopts cheap nitrate of baryta and zinc nitrate, niobium oxides, as raw material, substitutes expensive metallorganics alkoxide, carries out dissolution process with mineral acid; The metering of sol gel process process chemistry is more accurate than controlling, and technique is simple, reproducible; Based on collosol and gel principle, the advantage of Bound moisture thermal process, realizes the Ba (Zn of very low temperature synthesis of nano yardstick
1/3nb
2/3) O
3ceramic powder.The ceramic powder particle of this technology synthesis is tiny, even, and synthesis temperature is low, synthesis Ba (Zn
1/3nb
2/3) O
3media ceramic thing is stablized single mutually, without dephasign interference, and accurate modification by ion-doping easy to implement; Synthesis Ba (Zn
1/3nb
2/3) O
3dielectric ceramic powder is nanoscale, has high-specific surface area, high-ratio surface energy, and active high, relative conventional solid technique easy-sintering, is beneficial to energy-conservation, and is expected to meet LTCC application demand.
Accompanying drawing explanation
Fig. 1 is that sol gel process of the present invention prepares Ba (Zn
1/3nb
2/3) O
3ceramic nano presoma process flow sheet,
Fig. 2 is XRD typical consequence after the Ba-Zn-Nb gel 850 DEG C calcining of embodiment 1 gained,
Fig. 3 is TEM typical case shape appearance figure after the gel 850 DEG C calcining of embodiment 1 gained.
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Embodiment
Embodiment 1
Ba (Zn is prepared according to Fig. 1 sol gel process
1/3nb
2/3) O
3ceramic nano precursor powder process flow sheet, has following steps:
(1) aqueous citric acid solution of Zn, Ba ion is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, adjustment Ba/Zn/Nb element mol ratio is 3/1+x/2, and wherein x is: 0 < x < 0.05, this x=0.01; First precision balance takes Zn (NO
3)
2.6H
2o totally 2.9749 grams, Ba (NO
3)
2totally 7.8405 grams, be dissolved in 200ml ionized water, magnetic agitation, form colourless transparent solution;
B () takes citric acid 34.58 grams, add in above-mentioned solution and stir, and impels citric acid and Zn, Ba ion forming complex, makes water white transparency Zn, Ba ion aqueous citric acid solution;
(2) aqueous citric acid solution of Nb is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, takes niobium oxides 5.316 grams respectively, is placed in ceramic dielectic reactor, seal after adding 50ml hydrofluoric acid, then utilize baking oven to carry out high temperature 150 DEG C of hydrothermal treatment consists 1 hour accelerate dissolution, form the HF acid solution of water white transparency Nb;
B, in the HF acid solution of () above-mentioned Nb, adding ammoniacal liquor 100ml adjustment pH value is 10, impels Nb to complete precipitation with the form of niobium hydroxide;
C () filters above-mentioned precipitation, cleaning is placed in lemon aqueous acid for several times and carries out magnetic agitation repeatedly, and form the white citric acid suspension liquid that is uniformly dispersed, wherein adding citric acid molar weight is 46.11 grams;
D above-mentioned white citric acid suspension liquid is placed in the sealing of ceramic dielectic autoclave by (), then utilize baking oven to carry out high temperature 150 DEG C process and impel reaction in 3 hours, impel citric acid and Nb to carry out reacting forming complex dissolving, finally form the mixing aqueous citric acid solution of water white transparency Nb;
(3) Ba (Zn
1/3nb
2/3) O
3the synthesis of media ceramic nanometer presoma
A Zn, Ba aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, and then add polyoxyethylene glycol and carry out esterification, polyoxyethylene glycol dosage is 100g; By water-bath 90 DEG C heating 10 hours, and constantly stir, ensure evenly, to obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution prepared by step (3) (a) is placed in drying in oven 150 DEG C by (), shrink and form xerogel;
C the xerogel of step (3) (b) is placed in retort furnace in 850 DEG C of calcinings 1 hour by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder; See that Fig. 2 is XRD result after Ba-Zn-Nb xerogel of the present invention 850 DEG C calcining.
Embodiment 2
Ba (Zn is prepared according to Fig. 1 sol gel process
1/3nb
2/3) O
3ceramic nano precursor powder process flow sheet, has following steps:
(1) aqueous citric acid solution of Zn, Ba ion is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, adjustment Ba/Zn/Nb element mol ratio is 3/1+x/2, and wherein x is: 0 < x < 0.05, this x=0.04; First precision balance takes Zn (NO
3)
2.6H
2o totally 5.9498 grams, Ba (NO
3)
2totally 15.681 grams, be dissolved in 200ml ionized water, magnetic agitation, form colourless transparent solution;
B () takes citric acid 38.428 grams, add in above-mentioned solution and stir, and impels citric acid and Zn, Ba ion forming complex, makes water white transparency Zn, Ba ion aqueous citric acid solution;
(2) aqueous citric acid solution of Nb is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, takes niobium oxides 2.987 grams respectively, is placed in ceramic dielectic reactor, seal after adding 90ml hydrofluoric acid, then utilize baking oven to carry out high temperature 100 DEG C of hydrothermal treatment consists 3 hours accelerate dissolution, form the HF acid solution of water white transparency Nb;
B, in the HF acid solution of () above-mentioned Nb, adding ammoniacal liquor 180ml adjustment pH value is 8, impels Nb to complete precipitation with the form of niobium hydroxide;
C () filters above-mentioned precipitation, cleaning is placed in lemon aqueous acid for several times and carries out magnetic agitation repeatedly, and form the white citric acid suspension liquid that is uniformly dispersed, wherein adding citric acid molar weight is 57.642 grams;
D above-mentioned white citric acid suspension liquid is placed in the sealing of ceramic dielectic autoclave by (), then utilize baking oven to carry out high temperature 100 DEG C process within 6 hours, to impel and react, impel citric acid and Nb to carry out reacting forming complex dissolving, finally form the aqueous citric acid solution of water white transparency Nb;
(3) Ba (Zn
1/3nb
2/3) O
3the synthesis of media ceramic nanometer presoma
A Zn, Ba aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, and then add polyoxyethylene glycol and carry out esterification, polyoxyethylene glycol dosage is 60g; By water-bath 60 DEG C heating 15 hours, and constantly stir, ensure evenly, to obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution prepared by step (3) (a) is placed in drying in oven 100 DEG C by (), shrink and form xerogel;
C the xerogel of step (3) (b) is placed in retort furnace in 850 DEG C of calcinings 1 hour by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder; Fig. 2 is XRD result after Ba-Zn-Nb xerogel of the present invention 850 DEG C calcining, and Fig. 3 is TEM shape appearance figure under 850 DEG C of calcining temperatures.
Embodiment 3
(1) aqueous citric acid solution of Zn, Ba ion is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, adjustment Ba/Zn/Nb element mol ratio is 3/1+x/2, and wherein x is: 0 < x < 0.05, this x=0.03; First precision balance takes Zn (NO
3)
2.6H
2o totally 8.9247 grams, Ba (NO
3)
2totally 23.5215 grams, be dissolved in 200ml ionized water, magnetic agitation, form colourless transparent solution;
B () takes citric acid 96.07 grams, add in above-mentioned solution and stir, and impels citric acid and Zn ion forming complex, makes water white transparency Zn ion aqueous citric acid solution;
(2) aqueous citric acid solution of Nb is prepared
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, takes niobium oxides 4.4805 grams respectively, is placed in ceramic dielectic reactor, seal after adding 80ml hydrofluoric acid, then utilize baking oven to carry out high temperature 130 DEG C of hydrothermal treatment consists 2 hours accelerate dissolution, form the HF acid solution of water white transparency Nb;
B, in the HF acid solution of () above-mentioned Nb, adding ammoniacal liquor 190ml adjustment pH value is 9, impels Nb to complete precipitation with the form of niobium hydroxide;
C () filters above-mentioned precipitation, cleaning is placed in lemon aqueous acid for several times and carries out magnetic agitation repeatedly, and form the white citric acid suspension liquid that is uniformly dispersed, wherein adding citric acid molar weight is 115 grams;
D above-mentioned white citric acid suspension liquid is placed in the sealing of ceramic dielectic autoclave by (), then utilize baking oven to carry out high temperature 130 DEG C process and impel generation hydro-thermal reaction in 4 hours, impel citric acid and Nb to carry out reacting forming complex dissolving, finally form the mixing aqueous citric acid solution of water white transparency Nb;
(3) Ba (Zn
1/3nb
2/3) O
3the synthesis of media ceramic nanometer presoma
A Zn, Ba aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, and then add polyoxyethylene glycol and carry out esterification, polyoxyethylene glycol dosage is 150g; By water-bath 80 DEG C heating 12 hours, and constantly stir, ensure evenly, to obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution prepared by step (3) (a) is placed in drying in oven 120 DEG C by (), shrink and form xerogel;
C the xerogel of step (3) (b) is placed in retort furnace in 850 DEG C of calcinings 1 hour by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder; Fig. 2 is XRD result after Ba-Zn-Nb xerogel of the present invention 850 DEG C calcining, and Fig. 3 is TEM shape appearance figure under 850 DEG C of calcining temperatures.
Claims (6)
1. utilize water-soluble sol gel process fine synthesis ternary Ba (Zn
1/3nb
2/3) O
3media ceramic Nano-powder body method, is characterized in that: comprise the following steps:
(1) aqueous citric acid solution of Zn and Ba ion is prepared;
(2) aqueous citric acid solution of Nb is prepared;
(3) Ba (Zn
1/3nb
2/3) O
3the synthesis of microwave-medium ceramics nanometer presoma;
A Zn and Ba aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, and then add polyoxyethylene glycol and carry out esterification, the molar weight that polyoxyethylene glycol adds be the 4-6 of citric acid doubly; Heat, stir, obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution that step (a) is prepared by () is placed in drying in oven, shrinks and forms xerogel;
C the xerogel of step (b) is placed in High Temperature Furnaces Heating Apparatus 850 DEG C of calcination processing by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder.
2. according to claim 1ly utilize sol-gel method fine synthesis nanometer Ba (Zn
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the aqueous citric acid solution of described step (1) preparation Zn and Ba ion comprises the following steps:
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, adjustment Ba/Zn/Nb element mol ratio is 3/1+x/2, and wherein x is: 0 < x < 0.05; First take zinc nitrate and nitrate of baryta, be dissolved in appropriate amount of deionized water, form colourless transparent solution;
B () takes citric acid, the mol ratio of citric acid be zinc nitrate and nitrate of baryta 4-6 doubly, add in above-mentioned solution, impel citric acid and Zn and Ba ion forming complex, make water white transparency Zn and Ba ion aqueous citric acid solution.
3. according to claim 1ly utilize sol-gel method fine synthesis nanometer Ba (Zn
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: the aqueous citric acid solution of described step (2) preparation Nb comprises the following steps:
A () is according to Ba (Zn
1/3nb
2/3) O
3the stoichiometric ratio of pottery thing phase, takes niobium oxides, is placed in ceramic dielectic reactor, seal after adding hydrofluoric acid, then utilize baking oven to carry out pyroprocessing 1-3 hour, accelerate dissolution, form the HF acid solution of water white transparency Nb;
B, in the HF acid solution of () above-mentioned Nb, adding ammoniacal liquor adjustment pH value is 8-10, impels Nb to complete precipitation with the form of niobium hydroxide;
C () filters above-mentioned precipitation, cleaning is placed in lemon aqueous acid for several times and carries out magnetic agitation repeatedly, forms the white citric acid suspension liquid that is uniformly dispersed, and wherein adding citric acid molar weight is metal ion total amount 4-8 times;
D above-mentioned white citric acid suspension liquid is placed in the sealing of ceramic dielectic autoclave by (), then baking oven is utilized to carry out pyroprocessing 3-6 hour, impel and react, impel citric acid and Nb to carry out reacting forming complex dissolving, finally form the aqueous citric acid solution of water white transparency Nb.
4. according to claim 3ly utilize sol-gel method fine synthesis nanometer Ba (Zn
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: in described step (2), and described step (a) is 100-150 DEG C with the temperature of the baking oven pyroprocessing in (d).
5. according to claim 1ly utilize sol-gel method fine synthesis nanometer Ba (Zn
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: described step (3) Ba (Zn
1/3nb
2/3) O
3synthesis and the ceramic preparation of microwave-medium ceramics nanometer presoma comprise the following steps:
A Zn and Ba ion aqueous citric acid solution, Nb aqueous citric acid solution that step (1), (2) are prepared by () mix, then add polyoxyethylene glycol and carry out esterification, the molar weight that polyoxyethylene glycol adds is 4-6 times of Citric Acid Dosage total amount; By water-bath 60-90 DEG C of heating 8-20 hour, and constantly stir, ensure evenly, to obtain Ba-Zn-Nb precursor sol;
B Ba-Zn-Nb precursor solution prepared by step (3) (a) is placed in drying in oven by (), shrink and form xerogel;
C the xerogel of step (3) (b) is placed in retort furnace in 850 DEG C of calcinings 1 hour by (), can obtain evengranular nano level Ba (Zn
1/3nb
2/3) O
3powder.
6. according to claim 5ly utilize sol-gel method fine synthesis nanometer Ba (Zn
1/3nb
2/3) O
3media ceramic precursor powder method, is characterized in that: in described step (3), and the temperature of the baking oven hyperthermia drying in described step (b) is 60-90 DEG C, and the calcining temperature in step (c) is 850 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098700A (en) * | 2017-04-28 | 2017-08-29 | 武汉理工大学 | A kind of high solids content BMN suspension inks printed suitable for direct write and preparation method thereof |
| CN108558401A (en) * | 2018-05-17 | 2018-09-21 | 韶关学院 | A kind of sol-gal process preparation Bi2/3Cu2Ta2Ti2O12The method of ceramic powder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708837A (en) * | 2013-06-27 | 2014-04-09 | 济南大学 | Method for finely synthesizing Ba(Zn1/3Nb2/3)O3 dielectric ceramic nanometer powder by using water-soluble sol-gel process |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708837A (en) * | 2013-06-27 | 2014-04-09 | 济南大学 | Method for finely synthesizing Ba(Zn1/3Nb2/3)O3 dielectric ceramic nanometer powder by using water-soluble sol-gel process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107098700A (en) * | 2017-04-28 | 2017-08-29 | 武汉理工大学 | A kind of high solids content BMN suspension inks printed suitable for direct write and preparation method thereof |
| CN108558401A (en) * | 2018-05-17 | 2018-09-21 | 韶关学院 | A kind of sol-gal process preparation Bi2/3Cu2Ta2Ti2O12The method of ceramic powder |
| CN108558401B (en) * | 2018-05-17 | 2021-08-17 | 韶关学院 | Preparation of Bi by sol-gel method2/3Cu2Ta2Ti2O12Method for producing ceramic powder |
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Application publication date: 20150513 |