CN109553413A - A kind of textured piezoelectric ceramic and its preparation method and application - Google Patents
A kind of textured piezoelectric ceramic and its preparation method and application Download PDFInfo
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- CN109553413A CN109553413A CN201910043876.7A CN201910043876A CN109553413A CN 109553413 A CN109553413 A CN 109553413A CN 201910043876 A CN201910043876 A CN 201910043876A CN 109553413 A CN109553413 A CN 109553413A
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- piezoelectric ceramic
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- acid bismuth
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- lead titanates
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- 239000000919 ceramic Substances 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 59
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 56
- 239000002253 acid Substances 0.000 claims abstract description 55
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000002178 crystalline material Substances 0.000 claims abstract description 50
- UDRRLPGVCZOTQW-UHFFFAOYSA-N bismuth lead Chemical compound [Pb].[Bi] UDRRLPGVCZOTQW-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims description 89
- 238000000034 method Methods 0.000 claims description 29
- 229910003781 PbTiO3 Inorganic materials 0.000 claims description 21
- 229910003378 NaNbO3 Inorganic materials 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 11
- 238000007731 hot pressing Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000007766 curtain coating Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract description 11
- 238000010168 coupling process Methods 0.000 abstract description 11
- 238000005859 coupling reaction Methods 0.000 abstract description 11
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 239000010936 titanium Substances 0.000 description 26
- 229910020684 PbZr Inorganic materials 0.000 description 21
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- MUPJWXCPTRQOKY-UHFFFAOYSA-N sodium;niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Na+].[Nb+5] MUPJWXCPTRQOKY-UHFFFAOYSA-N 0.000 description 10
- 239000000843 powder Substances 0.000 description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000227 grinding Methods 0.000 description 8
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 8
- 150000003839 salts Chemical class 0.000 description 8
- 238000000498 ball milling Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- QAKMMQFWZJTWCW-UHFFFAOYSA-N bismuth titanium Chemical compound [Ti].[Bi] QAKMMQFWZJTWCW-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium(III) oxide Inorganic materials O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 4
- 239000001103 potassium chloride Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000462 isostatic pressing Methods 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000003854 Surface Print Methods 0.000 description 1
- PYLYNBWPKVWXJC-UHFFFAOYSA-N [Nb].[Pb] Chemical compound [Nb].[Pb] PYLYNBWPKVWXJC-UHFFFAOYSA-N 0.000 description 1
- FMUXTBINZIPMEB-UHFFFAOYSA-N [Pb].[Bi].[Ti] Chemical compound [Pb].[Bi].[Ti] FMUXTBINZIPMEB-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- XMFOQHDPRMAJNU-UHFFFAOYSA-N lead(II,IV) oxide Inorganic materials O1[Pb]O[Pb]11O[Pb]O1 XMFOQHDPRMAJNU-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
- C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
- C04B35/472—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on lead titanates
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- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/09—Forming piezoelectric or electrostrictive materials
- H10N30/093—Forming inorganic materials
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Abstract
The present invention relates to a kind of textured piezoelectric ceramic and its preparation method and application, the textured piezoelectric ceramic includes template crystalline material and scandium acid bismuth lead titanates basis material, and the scandium acid bismuth lead titanates basis material oriented growth is on template crystalline material；The textured piezoelectric ceramic maintains the characteristic of the higher Curie temperature of scandium acid bismuth lead titanates matrix material body, its Curie temperature >=435 DEG C, and the texture degree of textured piezoelectric ceramic of the present invention is very high, its texture degree >=83%, so that the performance of textured piezoelectric ceramic, close to monocrystalline performance, electromechanical coupling factor Kp reaches as high as 0.71, Kt reaches as high as 0.64, mechanic quality factor reaches as high as 248, and its consistency with higher, density >=7.36g/cm3, the piezoelectric constant of textured piezoelectric ceramic of the present invention reaches as high as 1480pC/N, has broad prospects in terms of piezoelectric transducer, piezoelectric motor and high precision displacement.
Description
Technical field
The present invention relates to piezoelectric ceramics fields more particularly to a kind of textured piezoelectric ceramic and its preparation method and application.
Background technique
Piezoelectric ceramics is answered extensively since the mutual conversion between electric energy and mechanical energy with piezoelectric effect, may be implemented
For fields such as medical treatment, aerospace, detections.In recent years, with the fast development of science and technology and the demand of practical application, for pressure
More stringent requirements are proposed for ferroelectrie Curie temperature, piezoelectric constant of electroceramics etc..
Novel scandium acid bismuth-lead titanates (BiScO3-PbTiO3) high-temperature piezoelectric ceramics, compared to other lead base piezoelectric ceramics materials
Material (illustratively including lead titanate piezoelectric ceramics etc.), shows high-curie temperature (TC~450 DEG C) and high piezoelectric constant (d33
~450pC/N), be a kind of great potential and being suitble to use under high temperature environment ceramic material (R.E.Eitel, et al,
Jpn.J.Appl.Phys.41,2099(2002)).From 2001, the material was found for the first time, and researchers pass through doping mostly
Different additives is to change component to carry out solid phase reaction to improve the performance of material.However, due to crystal grain and defect etc.,
The piezoelectric material piezoelectric constant and Curie temperature prepared using solid reaction process is often negatively correlated, so that the performance of material is difficult
Have greatly improved.
CN103936412A disclose a kind of niobium lead stannate-scandium acid bismuth-lead titanates ternary system high temperature piezoceramics and
The composition of preparation method, the material is expressed by the following formula: 0.05Pb (Sn1/3Nb2/3)O3-(0.95-x)BiScO3-
xPbTiO3, x and 0.95-x in general formula respectively indicate PbTiO3And BiScO3The mole percent of component, wherein the value of x be
0.60-0.63；This piezoelectric ceramics passes through Pb (Sn by material1/3Nb2/3)O3Addition reduce can the dosage of Sc reduce production
Cost, but still there is the Curie temperature of piezoelectric ceramics to be decreased obviously (420 DEG C of its Curie temperature <), piezoelectric property is insufficient
Problem.
CN102180665A discloses a kind of scandium acid bismuth-lead titanates high temperature piezoceramics and preparation method thereof, including
Chemical formula is xBiScO3-(1-x)PbTiO3Matrix and account for matrix total weight be 0.4% Bi below2O3, the material by
Chemical formula is xBiScO3-(1-x)PbTiO3Metering than raw material Sc2O3、Bi2O3、Pb3O4And TiO2It is middle that excessive Bi is added2O3System
Standby to obtain, wherein x value is 0.35-0.38, excessive Bi2O3Dosage be xBiScO3-(1-x)PbTiO3Metering than raw material gross weight
The 0.1-0.4% of amount, there is low (the electromechanical coupling factor Kp < of electromechanical coupling factor for piezoceramic material described in this scheme
, and the low problem of piezoelectric constant 0.49).
Although above-mentioned document provides some piezoelectric ceramics and preparation method thereof, but the pressure being prepared due to the method
The texture degree of electroceramics is low, it is difficult to which close to monocrystalline performance, therefore that there is Curie temperature is lower, and electromechanical coupling factor is low and piezoelectricity
The low problem of constant, therefore develop a kind of piezoelectric ceramics with more highly-textured degree and preparation method thereof still there is important meaning
Justice.
Summary of the invention
The purpose of the present invention is to provide a kind of textured piezoelectric ceramic and its preparation method and application, the texturing pressure
Electroceramics includes template crystalline material and scandium acid bismuth lead titanates basis material, the scandium acid bismuth lead titanates basis material oriented growth
On template crystalline material；The textured piezoelectric ceramic maintains the higher Curie's temperature of scandium acid bismuth lead titanates matrix material body
The characteristic of degree, Curie temperature >=435 DEG C, and the texture degree of textured piezoelectric ceramic of the present invention is very high, texture degree >=
83%, so that the performance of textured piezoelectric ceramic, close to monocrystalline performance, electromechanical coupling factor Kp reaches as high as 0.71, Kt highest
Up to 0.64, mechanic quality factor reaches as high as 248, and its consistency with higher, density >=7.36g/cm3, this
The piezoelectric constant of the invention textured piezoelectric ceramic reaches as high as 1480pC/N, piezoelectric transducer, piezoelectric motor and
It has broad prospects in terms of high precision displacement.
In order to achieve that object of the invention, the invention adopts the following technical scheme:
In a first aspect, the textured piezoelectric ceramic includes template crystalline substance the present invention provides a kind of textured piezoelectric ceramic
Body material and scandium acid bismuth lead titanates basis material, the scandium acid bismuth lead titanates basis material oriented growth is in template crystalline material
On.
The template crystalline material includes the PbTiO with<001>crystal orientation3、NaNbO3Or PbZr0.3Ti0.7O3In it is any
It is a kind of or at least two mixture, the mixture illustratively includes the PbTiO with<001>crystal orientation3And have<001>
The NaNbO of crystal orientation3Mixture, the PbTiO with<001>crystal orientation3With the PbZr with<001>crystal orientation0.3Ti0.7O3Mixing
Object or NaNbO with<001>crystal orientation3With the PbZr with<001>crystal orientation0.3Ti0.7O3Mixture etc..
The component general formula of the scandium acid bismuth lead titanates basis material is xBiScO3-(1-x)PbTiO3, the x is BiScO3
Molar content, x 30%-40%, for example, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%,
39% or 40% etc..
X of the present invention represents BiScO in scandium acid bismuth lead titanates basis material3Molar content, and its mole hundred
Dividing content is 30-40%, and (1-x) is PbTiO in scandium acid bismuth lead titanates basis material3Molar content, and its mole hundred
Divide content for 60-70%, such as 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% or 70%
Deng.
The quality of the template crystalline material be scandium acid bismuth lead titanates matrix quality of materials 5%-20%, such as 5%,
6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20% etc..
Preferably, the template crystalline material is prepared using molten-salt growth method.
Textured piezoelectric ceramic of the present invention includes template crystalline material and scandium acid bismuth lead titanates basis material, the scandium
Sour bismuth lead titanates basis material oriented growth is on template crystalline material；Wherein the presence of template crystalline material improves piezoelectricity pottery
The texture degree of porcelain mentions while keeping the characteristic of the higher Curie temperature of scandium acid bismuth lead titanates matrix material body to reach
The high piezoelectric property of piezoelectric ceramics.
Textured piezoelectric ceramic of the present invention maintains the higher Curie temperature of scandium acid bismuth lead titanates matrix material body
Characteristic, Curie temperature >=435 DEG C, and the texture degree of textured piezoelectric ceramic of the present invention is very high, texture degree >=
83%, to improve its piezoelectric property, electromechanical coupling factor Kp reaches as high as 0.71, Kt and reaches as high as 0.64, mechanical product
Prime factor Qm reaches as high as 248, and its consistency with higher, density >=7.36g/cm3, texturing of the present invention
The piezoelectric constant of piezoelectric ceramics reaches as high as 1480pC/N.
Second aspect, the present invention provides the preparation method of textured piezoelectric ceramic as described in relation to the first aspect, the side
Method includes that scandium acid bismuth lead titanates basis material and template crystalline material are mixed with the textured piezoelectric ceramic.
Preferably, the method includes carrying out wet process after mixing scandium acid bismuth lead titanates basis material with template crystalline material
Ball milling is mixed with organic solvent later, obtains piezoelectric ceramics diaphragm through curtain coating, and the piezoelectric ceramics diaphragm is carried out lamination, heat
Pressure, dumping wait static pressure and sintering to obtain the textured piezoelectric ceramic.
Preferably, the temperature of the sintering be 1000-1200 DEG C, such as 1000 DEG C, 1050 DEG C, 1100 DEG C, 1150 DEG C or
1200 DEG C etc., preferably 1100 DEG C.
Preferably, the time of the sintering is 2-6h, such as 2h, 3h, 4h, 5h or 6h etc., preferably 4h.
The method of the invention includes carrying out wet process after mixing scandium acid bismuth lead titanates basis material with template crystalline material
Piezoelectric ceramics diaphragm is prepared in ball milling later, the piezoelectric ceramics diaphragm is carried out lamination, hot pressing, dumping waits static pressure
With the textured piezoelectric ceramic is obtained after sintering processes, the addition of template crystalline material in preparation process, so that scandium acid bismuth titanium
Lead plumbate basis material oriented growth on the crystal grain of the template crystalline material with<001>crystal orientation, is prepared to improve
Piezoelectric ceramics texture degree, and then improve its piezoelectric property.
The method of the invention uses the crystalline material with<001>crystal orientation as template, so that scandium acid bismuth lead titanate
Body material oriented growth in template, the degree of orientation of growth course is very high, so that the piezoelectric ceramics being prepared is knitted
Structure degree >=83%, so as to improve the problem of the orientation deficiency of conventional sintering ceramic crystalline grain, to improve the pressure being prepared
The piezoelectric property of electroceramics.
Preferably, the preparation method of the scandium acid bismuth lead titanates basis material includes by Bi2O3, Sc2O3, PbO and TiO2It is mixed
It closes ball milling and obtains mixture powder, calcined to obtain the scandium acid bismuth lead titanates basis material later.
Preferably, the method for the mixing and ball milling includes wet ball grinding.
Preferably, by Bi2O3, Sc2O3, PbO and TiO2The solvent for carrying out wet ball grinding includes ethyl alcohol.
Preferably, the temperature of the calcining is 850-950 DEG C, such as 850 DEG C, 870 DEG C, 900 DEG C, 920 DEG C or 950 DEG C
Deng preferably 900 DEG C.
Preferably, the time of the calcining is 2-4h, such as 2h, 2.3h, 2.5h, 3h, 3.5h or 4h etc., preferably 2h.
Preferably, the template crystalline material includes the PbTiO with<001>crystal orientation3、NaNbO3Or PbZr0.3Ti0.7O3
In any one or at least two mixture, the mixture illustratively includes the PbTiO with<001>crystal orientation3With
NaNbO with<001>crystal orientation3Mixture, the NaNbO with<001>crystal orientation3With with<001>crystal orientation
PbZr0.3Ti0.7O3Mixture or PbTiO with<001>crystal orientation3With the PbZr with<001>crystal orientation0.3Ti0.7O3Mixing
Object etc..
Preferably, the template crystalline material is prepared using molten-salt growth method.
Preferably, the quality of the template crystalline material is the 5-20% of scandium acid bismuth lead titanates matrix quality of materials, such as
5%, 7%, 10%, 15% or 20% etc..
Preferably, the PbTiO with<001>crystal orientation3Preparation method include by PbO and TiO2Powder and alkali metal
The fused salt of chlorate is mixed and dried by wet ball grinding, later 900-1200 DEG C (it is illustrative include 900 DEG C, 1000 DEG C,
1100 DEG C or 1200 DEG C etc.) under carry out heat treatment 1-6h (illustratively including 1h, 2h, 3h, 4h, 5h or 6h etc.), wash, dry
It is dry, there is the PbTiO of<001>crystal orientation3。
Preferably, the PbTiO with<001>crystal orientation3Preparation method heat treatment temperature be 1200 DEG C.
Preferably, the PbTiO with<001>crystal orientation3Preparation method heat treatment time be 4h.
Preferably, the NaNbO with<001>crystal orientation3Preparation method include by Na2CO3And Nb2O5Powder and alkali gold
The fused salt for belonging to chlorate is mixed and dried by wet ball grinding, later 800-1100 DEG C (it is illustrative include 800 DEG C, 900 DEG C,
1000 DEG C or 1100 DEG C etc.) under carry out heat treatment 2-8h (illustratively including 2h, 3h, 4h, 5h, 6h, 7h or 8h etc.), wash,
Drying, is had the NaNbO of<001>crystal orientation3。
Preferably, the NaNbO with<001>crystal orientation3Preparation method heat treatment temperature be 1100 DEG C.
Preferably, the NaNbO with<001>crystal orientation3Preparation method heat treatment time be 4h.
Preferably, the PbZr with<001>crystal orientation0.3Ti0.7O3Preparation method include by PbO, ZrO and TiO2Powder
Body, the PbTiO with<001>crystal orientation3It is mixed and dried with the fused salt of alkali metal chlorizated salt by wet ball grinding, later in 950-
Heat treatment 2-6h (example is carried out under 1200 DEG C (illustrative includes 950 DEG C, 1000 DEG C, 1100 DEG C, 1150 DEG C or 1200 DEG C etc.)
Property including 2h, 3h, 4h, 5h or 6h etc.), wash, drying, there is the PbZr of<001>crystal orientation0.3Ti0.7O3。
Preferably, the PbZr with<001>crystal orientation0.3Ti0.7O3Preparation method heat treatment temperature be 1150
℃。
Preferably, the PbZr with<001>crystal orientation0.3Ti0.7O3Preparation method heat treatment time be 4h.
Preferably, the alkali metal chlorizated salt includes NaCl and/or KCl.
As currently preferred technical solution, the preparation method of the textured piezoelectric ceramic the following steps are included:
(1) by Bi2O3, Sc2O3, PbO and TiO2Mixing and ball milling obtains mixture powder, calcines at 850-950 DEG C later
2-4h obtains the scandium acid bismuth lead titanates basis material；
(2) wet process ball is carried out after mixing the scandium acid bismuth lead titanates basis material that step (1) obtains with template crystalline material
Mill, the template crystalline material include the PbTiO with<001>crystal orientation3、NaNbO3Or PbZr0.3Ti0.7O3In any one
Or at least two mixture, the quality of the template crystalline material is the 5-20% of scandium acid bismuth lead titanates matrix quality of materials；
(3) product of step (2) is added in organic solvent and slurry is prepared, the slurry tape casting is pressed
Electroceramics diaphragm；
(4) step (3) is obtained into piezoelectric ceramics diaphragm and carries out lamination, hot pressing, dumping, isostatic pressing, later in 1000-
The textured piezoelectric ceramic is obtained after 1200 DEG C of sintering 2-6h.
The third aspect, the purposes of textured piezoelectric ceramic as described in relation to the first aspect, the textured piezoelectric ceramic are used for
Piezoelectric transducer, piezoelectric motor or high precision position moving device.
Compared with the existing technology, the invention has the following advantages:
(1) textured piezoelectric ceramic of the present invention maintains the higher Curie's temperature of scandium acid bismuth lead titanates matrix material body
The characteristic of degree, Curie temperature >=435 DEG C, and the texture degree of textured piezoelectric ceramic of the present invention is very high, texture degree >=
83%, so that the performance of textured piezoelectric ceramic is close to monocrystalline performance, to improve its piezoelectric property, electromechanical coupling factor
Kp reaches as high as 0.71, Kt and reaches as high as 0.64, and mechanic quality factor reaches as high as 248, and its consistency with higher,
Its density >=7.36g/cm3, the piezoelectric constant of textured piezoelectric ceramic of the present invention reaches as high as 1480pC/N, pressing
It has broad prospects in terms of electric transducer, piezoelectric motor and high precision displacement；
(2) preparation method of textured piezoelectric ceramic of the present invention is by scandium acid bismuth lead titanates basis material and template crystal
Wet ball grinding is carried out after material mixing, piezoelectric ceramics diaphragm is prepared later, the piezoelectric ceramics diaphragm is folded
Piece, hot pressing, dumping obtain the textured piezoelectric ceramic after waiting static pressure and sintering processes, have<001>crystal orientation in preparation process
Template crystalline material addition so that scandium acid bismuth lead titanates basis material is in the template crystalline material with<001>crystal orientation
Oriented growth on crystal grain to improve the texture degree for the piezoelectric ceramics being prepared, and then improves its piezoelectric property；
(3) preparation method of textured piezoelectric ceramic of the present invention is simple, manufacturing cost is low, easy to industrialized production.
Detailed description of the invention
Fig. 1 is the method schematic diagram that textured piezoelectric ceramic is prepared described in specific embodiment of the invention part；
Fig. 2 is electromechanical coupling factor Kp and the Kt test for the textured piezoelectric ceramic that 1-48 of the embodiment of the present invention is prepared
Value；
Fig. 3 is the test of the mechanic quality factor for the textured piezoelectric ceramic that 1-48 of the embodiment of the present invention is prepared
Value.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.Those skilled in the art should be bright
, the described embodiments are merely helpful in understanding the present invention, should not be regarded as a specific limitation of the invention.
The method schematic diagram of the present invention that textured piezoelectric ceramic is prepared is as shown in Figure 1, as seen from the figure
After the template crystalline material with<001>crystal orientation is mixed with scandium acid bismuth lead titanates basis material during the preparation process, have<001>
The crystal grain of the template crystalline material of crystal orientation is blended in scandium acid bismuth lead titanates basis material, in sintering process later, matrix
Material oriented growth on the crystal grain of template crystalline material, to obtain the textured piezoelectric ceramic of highly-textured degree.
There is<001>crystal orientation template crystalline material used in the preparation process of following example 1-48 and comparative example 1
The preparation method is as follows:
PbTiO with<001>crystal orientation3Preparation method include by PbO and TiO2The fused salt of powder and KCl and NaCl are logical
Wet process ball milling mixing is crossed, dries, carries out heat treatment 4h at 1200 DEG C later, is washed, drying is had<001>crystal orientation
PbTiO3。
NaNbO with<001>crystal orientation3Preparation method include by Na2CO3And Nb2O5The fused salt of powder and KCl and NaCl
It is mixed and dried by wet ball grinding, carries out heat treatment 4h at 1100 DEG C later, washed, drying is had<001>crystal orientation
NaNbO3；
PbZr with<001>crystal orientation0.3Ti0.7O3Preparation method include by PbO, ZrO and TiO2Powder has<001>
The PbTiO of crystal orientation3It is mixed and dried with the fused salt of KCl and NaCl by wet ball grinding, is heat-treated at 1150 DEG C later
4h is washed, and drying is had the PbZr of<001>crystal orientation0.3Ti0.7O3。
The PbTiO that the above method is prepared3、NaNbO3And PbZr0.3Ti0.7O3All there is<001>crystal orientation.
Embodiment 1
The preparation method of textured piezoelectric ceramic the following steps are included:
(1) by Bi2O3, Sc2O3, PbO and TiO2Mixing and ball milling obtains mixture powder, calcines 2h at 800 DEG C later and obtains
To the scandium acid bismuth lead titanates basis material；The component general formula of the scandium acid bismuth lead titanates basis material is xBiScO3-(1-x)
PbTiO3, the x is molar content, x 30%, 1-x 70%；
(2) wet process ball is carried out after mixing the scandium acid bismuth lead titanates basis material that step (1) obtains with template crystalline material
Mill, the template crystalline material are the PbTiO with<001>crystal orientation that molten-salt growth method is prepared3, the template crystalline material
Quality is 5% (i.e. template content is 5%) of scandium acid bismuth lead titanates matrix quality of materials；
(3) product of step (2) is added in organic solvent and slurry is prepared, the slurry tape casting is pressed
Electroceramics diaphragm；
(4) step (3) is obtained into piezoelectric ceramics diaphragm and carries out lamination, hot pressing, dumping, isostatic pressing, later 1100
DEG C sintering 4h after obtain the textured piezoelectric ceramic.
Embodiment 2-4
Embodiment 2-4 the difference from embodiment 1 is that, the quality of the template crystalline material is respectively scandium acid bismuth lead titanates
10%, 15% and the 20% of basis material quality, other conditions are identical compared with Example 1.
Embodiment 5
The present embodiment the difference from embodiment 1 is that, will with<001>crystal orientation PbTiO3Etc. replacing with for quality have
<001>NaNbO of crystal orientation3, other conditions are identical compared with Example 1.
Embodiment 6-8
Embodiment 6-8 and the difference of embodiment 5 are that the quality of the template crystalline material is respectively scandium acid bismuth lead titanates
10%, 15% and the 20% of basis material quality, other conditions are identical compared with Example 5.
Embodiment 9
The present embodiment the difference from embodiment 1 is that, will with<001>crystal orientation PbTiO3Etc. replacing with for quality have
<001>PbZr of crystal orientation0.3Ti0.7O3, other conditions are identical compared with Example 1.
Embodiment 10-12
Embodiment 10-12 and the difference of embodiment 9 are that the quality of the template crystalline material is respectively scandium acid bismuth metatitanic acid
10%, 15% and the 20% of lead base body quality of materials, other conditions are identical compared with Example 9.
Embodiment 13
The present embodiment the difference from example 2 is that, will with<001>crystal orientation PbTiO3Etc. quality replace with quality
Than the PbTiO with<001>crystal orientation for 1:13And NaNbO3, other conditions are identical compared with Example 2.
Embodiment 14
The present embodiment the difference from example 2 is that, will with<001>crystal orientation PbTiO3Etc. quality replace with quality
Than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And NaNbO3, other conditions are identical compared with Example 2.
Embodiment 15
The present embodiment the difference from example 2 is that, will with<001>crystal orientation PbTiO3Etc. quality replace with quality
Than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And PbTiO3, other conditions are identical compared with Example 2.
Embodiment 16
The present embodiment the difference from example 2 is that, will with<001>crystal orientation PbTiO3Etc. quality replace with quality
Than the PbZr with<001>crystal orientation for 1:1:10.3Ti0.7O3、PbTiO3And NaNbO3, other conditions are complete compared with Example 2
It is exactly the same.
Embodiment 17
The present embodiment the difference from embodiment 1 is that, the x in step (1) is replaced with into 0.35,1-x and replaces with 0.65,
His condition is identical compared with Example 1.
Embodiment 18-20
Embodiment 18-20 and the difference of embodiment 17 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 17.
Embodiment 21
The present embodiment and the difference of embodiment 17 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with tool
There is the NaNbO of<001>crystal orientation3, other conditions are identical with embodiment 17.
Embodiment 22-24
Embodiment 22-24 and the difference of embodiment 21 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 21.
Embodiment 25
The present embodiment and the difference of embodiment 17 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with tool
There is the PbZr of<001>crystal orientation0.3Ti0.7O3, other conditions are identical with embodiment 17.
Embodiment 26-28
Embodiment 26-28 and the difference of embodiment 25 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 25.
Embodiment 29
The present embodiment and the difference of embodiment 18 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbTiO with<001>crystal orientation for 1:13And NaNbO3, other conditions are identical with embodiment 18.
Embodiment 30
The present embodiment and the difference of embodiment 18 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And NaNbO3, other conditions are identical with embodiment 18.
Embodiment 31
The present embodiment and the difference of embodiment 18 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And PbTiO3, other conditions are identical with embodiment 18.
Embodiment 32
The present embodiment and the difference of embodiment 18 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:1:10.3Ti0.7O3、PbTiO3And NaNbO3, other conditions and embodiment 18 are complete
It is identical.
Embodiment 33
The present embodiment the difference from embodiment 1 is that, the x in step (1) is replaced with into 0.4,1-x and replaces with 0.6, other
Condition is identical compared with Example 1.
Embodiment 34-36
Embodiment 34-36 and the difference of embodiment 33 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 33.
Embodiment 37
The present embodiment and the difference of embodiment 33 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with tool
There is the NaNbO of<001>crystal orientation3, other conditions are identical with embodiment 33.
Embodiment 38-40
Embodiment 38-40 and the difference of embodiment 37 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 37.
Embodiment 41
The present embodiment and the difference of embodiment 33 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with tool
There is the PbZr of<001>crystal orientation0.3Ti0.7O3, other conditions are identical with embodiment 33.
Embodiment 42-44
Embodiment 42-44 and the difference of embodiment 41 are that the quality of the template crystalline material is respectively scandium acid bismuth titanium
10%, 15% and the 20% of lead plumbate basis material quality, other conditions are identical compared with embodiment 41.
Embodiment 45
The present embodiment and the difference of embodiment 34 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbTiO with<001>crystal orientation for 1:13And NaNbO3, other conditions are identical with embodiment 34.
Embodiment 46
The present embodiment and the difference of embodiment 34 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And NaNbO3, other conditions are identical with embodiment 34.
Embodiment 47
The present embodiment and the difference of embodiment 34 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:10.3Ti0.7O3And PbTiO3, other conditions are identical with embodiment 34.
Embodiment 48
The present embodiment and the difference of embodiment 34 are, by the PbTiO with<001>crystal orientation3Etc. quality replace with matter
Amount is than the PbZr with<001>crystal orientation for 1:1:10.3Ti0.7O3、PbTiO3And NaNbO3, other conditions and embodiment 34 are complete
It is identical.
Comparative example 1
This comparative example the difference from embodiment 1 is that, without the operation of step (2), i.e., be added without during the preparation process
Template crystalline material, other conditions are identical compared with Example 1.
Performance test methods:
The method packet of piezoelectric property and Curie temperature test is carried out to the piezoelectric ceramics that embodiment 1-48 and comparative example 1 are obtained
It includes following steps: the obtained piezoelectric ceramics of embodiment 1-48 and comparative example 1 is cut into the sheet with a thickness of 1mm, sanding and polishing,
Later in its surface printing silver electrode, polarizes in 25 DEG C, the electric field strength of 40kV/cm, test its piezoelectric property and residence
In temperature.
The method that the piezoelectric ceramics that embodiment 1-48 and comparative example 1 obtain carries out texture degree test is to be surveyed by XRD
Examination.
Electromechanical coupling factor Kp and Kt test value such as Fig. 2 institute for the textured piezoelectric ceramic that embodiment 1-48 is prepared
Show, its electromechanical coupling factor Kp reaches as high as 0.71 as seen from the figure, and Kt reaches as high as 0.64.
The test value of the mechanic quality factor for the textured piezoelectric ceramic that embodiment 1-48 is prepared as shown in figure 3,
Its mechanic quality factor reaches as high as 248 as seen from the figure.
The texture of piezoelectric ceramics that embodiment 1-48 and comparative example 1 prepare the Parameter Conditions of piezoelectric ceramics and be prepared
Degree, piezoelectric constant d33, density and Curie temperature it is as shown in table 1:
Table 1
"-" indicates that preparation process is free of this substance.
This can be illustrated with texture degree >=83% for the textured piezoelectric ceramic that the method for the invention is prepared by upper table
In the preparation process of invention the method, the piezoelectric ceramics crystal grain degree of orientation with higher of growth, and can be with by density measurement
Find out the density >=7.36g/cm for the textured piezoelectric ceramic being prepared3, illustrate its consistency with higher, institute of the present invention
The piezoelectric constant for the textured piezoelectric ceramic stated reaches as high as 1480pC/N, and its Curie temperature >=435 DEG C, and optimal preparation
Condition is using the PbTiO with<001>crystal orientation3As template crystalline material, quality is scandium acid bismuth lead titanates basis material
Quality 10%, and when x=0.35, the piezoelectric property for the textured piezoelectric ceramic being prepared is optimal, and texture degree reaches
95%, piezoelectric constant 1480pC/N, Curie temperature Tc are 460 DEG C, and electromechanical coupling factor Kp is 0.71, Kt 0.64, machine
Tool quality factor q m is 248, it is therefore seen that, textured piezoelectric ceramic of the present invention had both maintained scandium acid bismuth lead titanates matrix material
Expect the characteristic of the high-curie temperature of ontology, also its piezoelectric property is optimized by improving texture degree, in piezoelectric transducer, piezoelectricity
It has broad application prospects in terms of motor and high precision displacement；And mould is not added in the piezoelectric ceramics preparation process of comparative example 1
Plate crystalline material, texture degree are only 0.43, piezoelectric constant 460pC/N, and Curie temperature is 448 DEG C.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (3)
1. a kind of textured piezoelectric ceramic, which is characterized in that the textured piezoelectric ceramic includes template crystalline material and scandium acid
Bismuth lead titanates basis material, the scandium acid bismuth lead titanates basis material oriented growth is on template crystalline material；
The template crystalline material includes the PbTiO with<001>crystal orientation3、NaNbO3Or PbZr0.3Ti0.7O3In any one
Or at least two mixture；
The component general formula of the scandium acid bismuth lead titanates basis material is xBiScO3-(1-x)PbTiO3, the x contains for Mole percent
Amount, x 30%-40%；
The quality of the template crystalline material is the 5%-20% of scandium acid bismuth lead titanates matrix quality of materials.
2. the preparation method of textured piezoelectric ceramic as described in claim 1, which is characterized in that the method includes scandium is sour
Bismuth lead titanates basis material and template crystalline material are mixed with the textured piezoelectric ceramic；
Preferably, the method includes wet process ball is carried out after mixing scandium acid bismuth lead titanates basis material with template crystalline material
Mill, mix later with organic solvent, through curtain coating obtain piezoelectric ceramics diaphragm, by the piezoelectric ceramics diaphragm progress lamination, hot pressing,
Dumping waits static pressure and sintering to obtain the textured piezoelectric ceramic；
Preferably, the temperature of the sintering is 1000-1200 DEG C, preferably 1100 DEG C；
Preferably, the time of the sintering is 2-6h, preferably 4h.
3. the purposes of textured piezoelectric ceramic as described in claim 1, which is characterized in that the textured piezoelectric ceramic is used for
Piezoelectric transducer, piezoelectric motor or high precision position moving device.
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| CN116332642A (en) * | 2023-02-19 | 2023-06-27 | 哈尔滨工业大学 | High Q m A kind of electronic device<111>Oriented quaternary texture ceramic and three-step sintering preparation method thereof |
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