CN107098698A - A kind of PCZT95/5 ferroelectric ceramic materials and preparation method and application - Google Patents
A kind of PCZT95/5 ferroelectric ceramic materials and preparation method and application Download PDFInfo
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- CN107098698A CN107098698A CN201710201007.3A CN201710201007A CN107098698A CN 107098698 A CN107098698 A CN 107098698A CN 201710201007 A CN201710201007 A CN 201710201007A CN 107098698 A CN107098698 A CN 107098698A
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- C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/49—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
- C04B35/491—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT
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Abstract
The present invention relates to a kind of PCZT95/5 ferroelectric ceramic materials and preparation method and application.The composition of the ferroelectric ceramic material of the present invention is Pb1‑xCdx(Zr0.965Ti0.035)O3(x=0 0.03)+1wt.%Nb2O5(PCZT95/5).The present invention is by adding cadmium oxide (CdO), adjust suitable Zr/Ti ratios, in the case of reduction sintering temperature (being reduced to 1100 DEG C from 1350 DEG C), prepare with high dielectric strength, high remanent polarization and low-loss fine and close PCZT95/5 ferroelectric ceramic materials, the ferroelectric ceramic material is applied to multilayer PZT95/5 thick devices, solve mechanical strength and the not high problem of anti-electric breakdown strength after monolithic PZT95/5 is bonded at present, reliability and miniaturization simultaneously for device are all very helpful, had a good application prospect in terms of the industry of blast ferroelectric power supply and national defence.
Description
Technical field
The present invention relates to ceramic material low-temperature fabrication, more particularly, to a kind of PCZT95/5 ferroelectric ceramic materials and its
Preparation method and application.
Background technology
Quick-fried electric initiator, quick-fried electric heterologous systems and quick-fried electric Initial energy source are all to carry out work by blast ferroelectric power drives
Make, wherein energy transducer is the core component of blast ferroelectric power supply.Blast ferroelectric power supply energy transducer be by
Element made by PZT95/5 ferroelectric ceramic materials assembles.PZT95/5 types Phase transformation ceramics under shock,
Depolarized completely within the time of several microseconds, occur ferroelectricity-antiferroelectric phase transformation (FE-AFE), while being discharged on external load
Go out to be gathered in the free charge on PZT95/5 ceramic electrodes surface, the strong current impulse of generation or voltage pulse and release energy,
It can obtain the pulse power (Neilson the F W, Bull.Am.Phys.Soc.2 (1957) 302. of MW grades of peak powers.In order to increase
Plus current impulse or the output of voltage pulse, must be multi-disc PZT95/5 ceramics glue sticking laminations in practical application.It is this viscous
Not only binding agent easily comes off the structure connect with potsherd under external force, and the gap between potsherd also easily causes ceramic material
Material produces dielectric breakdown, the reliability and stability of extreme influence device under high pressure.
Thick film is made in PZT95/5 ceramics, the LTCC Technology burnt altogether by lamination and with interior electrode not only may be used
To improve reliability and electrical breakdown withstand performance, packing density can also be improved, volume is reduced, mitigates weight, and then shortens assembling
Cycle.During ceramics and metal inner electrode burn altogether, too high sintering temperature can cause metal ion to ceramic diffusion inside,
So that the insulation resistivity reduction of ceramics, deteriorates the electric property of PZT95/5 ceramics.In addition, too high sintering temperature, can burn
After knot in cooling procedure, metal inner electrode layer shrinkage factor is much larger than ceramic layer, so as to be produced at metal and ceramic interface very big
Internal stress.In order to realize that PZT95/5 ceramics and metal inner electrode burn altogether, just it is highly desirable to reduce the burning of PZT95/5 ceramics
Junction temperature.The low-temperature sinterings of current PZT95/5 ceramics mainly produces liquid phase by adding glass in sintering process and reduced
Sintering temperature, but the addition of excessive glass phase greatly reduces the electric property of PZT95/5 ceramics.
In summary, the PZT95/5 ferroelectric ceramic powders that sintering temperature is low and electrology characteristic is good are developed to burn not only for common
Preparing for PZT95/5 ceramics is most important, all has even for development high reliability, miniaturization blast ferroelectric power supply important
Meaning.
The content of the invention
The invention aims to solve that existing PZT95/5 ferroelectric ceramics sintering temperature is too high and performance is relatively low etc. to ask
Topic, and the doping cadmium oxide (CdO) proposed on this basis combines batch mixing and the improvement advantage of sintering process prepares sintering temperature
For 1100 DEG C of PZT95/5 ferroelectric ceramics.The invention provides PCZT95/5 ferroelectric ceramic materials and preparation method and application,
The PCZT95/5 ferroelectric ceramic materials that the present invention is provided are mainly used in explode ferroelectric power supply and the piezoelectricity of high power pulsed source
Element.The inventive method formula is adjustable, and preparation technology is simple, and the doping cadmium oxide (CdO) proposed on this basis is combined and mixed
It is the PZT95/5 ferroelectric ceramics less than 1150 DEG C that the improvement of material and sintering process, which prepares sintering temperature,.The present invention is provided simultaneously
The preparation technology of PCZT95/5 ferroelectric ceramic materials is simple, it is adjustable to be formulated, and is applicable to large-scale production.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of PCZT95/5 ferroelectric ceramic materials, its composition is represented with below general formula：(Pb1-XCdX)(Zr0.965Ti0.035)O3
+ a wt%Nb2O5, wherein, 0.005≤x≤0.03,0.8≤a≤1.2.Its composition of PCZT95/5 ferroelectric ceramic materials is to mix
The lead zirconate-titanate ceramic that miscellaneous niobium is modified mixes CdO for matrix.
The preparation method for the PCZT95/5 ferroelectric ceramic materials that the present invention is provided, comprises the following steps：
Process A：By metal oxide Pb3O4、ZrO2、TiO2、Nb2O5, CdO is according to formula (Pb1-XCdX)
(Zr0.965Ti0.035)O3+ a wt%Nb2O5In metering than proportioning, and wet ball grinding is to required granularity, wherein, 0.005≤x≤
0.03,0.8≤a≤1.2；
Process B：By briquetting after the raw material stoving after being handled through process A, synthesis obtains niobium doping vario-property and containing CdO's
PCZT95/5 ferroelectric ceramic materials；
Process C：PCZT95/5 ferroelectric ceramic material blocks by niobium doping vario-property and containing CdO grind into powder,
Compressing acquisition biscuit after fine grinding；
Step D：Biscuit is excluded into organic matter；
Process E：The biscuit handled through step D is incubated 2~5 hours at a temperature of 1100 DEG C~1150 DEG C (preferably 3~
4 hours) sintering obtains PCZT95/5 ferroelectric ceramic materials, and the environment sintered in the process is closed sintering in alumina crucible.
In the process A, using deionized water and zirconia ball as ball-milling medium, by raw material, zirconia ball and go
Ionized water is 1 according to mass ratio:1.2:0.85 ratio mixes wet ball grinding to required granularity.Here, Ball-milling Time is preferably
6-10 hours.
In the process B, synthesis temperature scope is 760 DEG C~850 DEG C, 2~4h of soaking time.
In the process C, the PZT95/5 ferroelectric ceramics blocks by niobium doping vario-property and containing CdO grind into powder
After body, and fine grinding, discharging drying adds 5~10wt%PVA granulating and formings, by pressed by powder under 100~200MPa pressure
Shaping obtains biscuit.
In the process C, fine grinding uses deionized water and zirconia ball as medium, by the powder, zirconia ball
With deionized water according to mass ratio be 1:1.5:1 ratio mixes wet ball grinding to required granularity.Preferably, the wet method fine grinding time
Preferably 15-40h.
In the step D, make biscuit in 600 DEG C~700 DEG C temperature range inside holdings 2~3 hours to exclude organic matter.
The process is also referred to as dumping process, during dumping, and dumping heating rate is no more than 3 DEG C/min.
PCZT95/5 ferroelectric ceramic materials of the present invention are used to prepare piezoelectric element.By PCZT95/5 ferroelectric ceramics materials
Expect the piezoelectric element prepared, when sintering temperature is less than 1150 DEG C, the piezoelectric coefficient d of the piezoelectric element33＞ 65pC/N, remaining pole
Change the μ C/cm of intensity Pr ＞ 362。
Compared with prior art, the present invention is by selecting appropriate preparation technology, suitable Zr/Ti ratios, appropriate oxidation
Cadmium doping, in the case where reducing sintering temperature, is prepared with high dielectric strength, high remanent polarization and low-loss
Fine and close ferroelectric ceramic material, it is adaptable to multilayer ferro-electric device, industry and national defence neck of the ferro-electric device in blast ferroelectric power supply
Had a good application prospect in terms of domain.
Brief description of the drawings
Fig. 1 is the microstructure of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 1；
Fig. 2 is the microstructure of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 2；
Fig. 3 is the XRD diffracting spectrums of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 1 and 2.
Fig. 4 is the ferroelectric hysteresis loop of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 1；
Fig. 5 is the ferroelectric hysteresis loop of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 2；
Fig. 6 is the dielectric thermogram of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 1；
Fig. 7 is the dielectric thermogram of the PCZT95/5 ferroelectric ceramics of the embodiment of the present invention 2.
Embodiment
With reference to Figure of description, and further illustrate the present invention with the following embodiments, it should be understood that this specification and under
State embodiment and be merely to illustrate the present invention, be not intended to limit the present invention.
The composition of the PCZT95/5 ferroelectric ceramics of the present invention is mixed using the lead zirconate-titanate ceramic for niobium modification of adulterating as matrix
CdO, can be represented with below general formula：(Pb1-XCdX)(Zr0.965Ti0.035)O3+ a wt%Nb2O5, wherein, 0.005≤x≤
0.03,0.8≤a≤1.2.
On the preparation of the above-mentioned PCZT95/5 ferroelectric ceramic materials of the present invention, first, by Pb3O4(technical pure), ZrO2
(technical pure), TiO2(technical pure), Nb2O5(chemistry pure) and CdO (analysis is pure) are stoichiometrically weighed, specifically match according to
Formula (Pb1-XCdX)(Zr0.965Ti0.035)O3+ a%wtNb2O5(0.005≤x≤0.03,0.8≤a≤1.2) is calculated.More than
The raw material compound that using commercially available prod or conventionally prepared by laboratory.
Raw material can be well mixed by wet ball grinding and reach required fineness.In the present invention, ball-milling medium
It is preferred to use zirconia ball, but is not limited to this, it is possible to use other such as agate ball medium.In embodiment, using material,
Zirconia ball, deionized water quality ratio are 1:2：0.85 ratio.Ball milling 6~10 hours in ball mill.
Ball milling reaches the raw material of certain fineness by drying, briquetting, then in synthesis under high temperature, it is preferable that synthesis temperature
Scope is 760 DEG C~850 DEG C 2~4h of insulation.
Niobium doping vario-property and containing CdO the PZT95/5 ferroelectric ceramics blocks that above-mentioned synthesis is obtained grind to form powder,
After wet method fine grinding 15-40h, discharging drying adds 5~10wt%PVA granulating and formings, by powder under 100~200MPa pressure
The compressing acquisition biscuit of body.It is preferred that ground, fine grinding using deionized water and zirconia ball as medium, by the powder, oxygen
It is 1 to change zirconium ball and deionized water according to mass ratio:1.5:1 ratio mixes wet ball grinding to required granularity.
Generally also need to carry out compressing biscuit at a proper temperature plastic removal before sintering (namely to discharge
Organic matter).The sample of forming can be put into the heaters such as chamber type electric resistance furnace and carry out plastic removal, plastic removal temperature is preferably
600 DEG C~700 DEG C, the time is preferably 1~2 hour of insulation.Dumping heating rate is no more than 3 DEG C/min.Sintering temperature is preferred
For 1100~1150 DEG C, sintering time is preferably 2~5h.
In order to test the performance of PCZT95/5 ferroelectric ceramic materials produced by the present invention, by the sample sintered according to specification
It is required that being machined；The sample processed is cleaned by ultrasonic, upper silver electrode after drying is put into chamber type electric resistance furnace burning
Silver；Then the sample for having electrode is placed in silicone oil, at a certain temperature, increases piezoelectric field, polarized.It is described
The sintering temperature of PCZT95/5 ferroelectric ceramics is less than 1150 DEG C, piezoelectric coefficient d33The μ C/ of >=65pC/N, remanent polarization Pr >=36
cm2。
The present invention is using ZJ-3AN type quasistatics d33Measuring instrument tests the piezoelectric modulus of piezoelectric element.Saying more particularly below
The preparation of bright PZT95/5 ferroelectric ceramics of the invention.It should be understood that some in following steps can also be omitted or using can
Other for reaching equivalent effect replace step, and each feature in each step nor is it necessary that or can not regularly replace
Change, and simply illustratively illustrate.
The preparation method of PCZT95/5 ferroelectric ceramic materials of the present invention can include：
(1) mixed material：With powdered Pb3O4、ZrO2、TiO2、Nb2O5It is raw material with CdO, stoichiometrically matches somebody with somebody
Than using deionized water, zirconia ball does medium, according to mixed material：Zirconia ball：Deionized water=1:2:0.85 ratio
Mixing, 6~10h of wet ball grinding；
(2) synthesis niobium doping vario-property and the PZT95/5 ferroelectric ceramic powders containing CdO：The raw material that step (1) is obtained
Pour into container and put briquetting after oven for drying into, and synthesized, synthesis temperature scope is 760 DEG C~850 DEG C, is incubated 2~4h.And
Synthetic block is ground to the obtain niobium doping vario-property and PZT95/5 ferroelectric ceramic powders containing CdO；
(3) powder is compressing：By (2) described powder, using deionized water, zirconia ball makees medium, according to material：Oxygen
Change zirconium ball：Deionized water=1:1.5:After 1 15~40h of ratio wet ball grinding, discharging drying, addition 5~10wt%PVA granulations
Shaping, it is under 100~200MPa pressure that split is compressing；
(4) biscuit plastic removal：In 600~700 DEG C of temperature ranges, 1~2 hour is incubated, the organic matter in biscuit is excluded
Matter, plastic removal speed is no more than 3 DEG C/min.
(5) sample is sintered：Sample after plastic removal is put into alumina crucible closed sintering, finally at 1100~1150 DEG C
Sintered in temperature range, be incubated 2~5h.
(6) sample sintered is machined according to specification requirement；The sample processed is cleaned by ultrasonic,
Upper silver electrode, is put into chamber type electric resistance furnace silver ink firing after drying；Silver ink firing condition is 600~700 DEG C, is incubated 30min.Then electricity will be covered with
The sample of pole is put into silicone oil high voltage polarization, and polarization condition is：Temperature be 120 DEG C, electric field be 3~5kV/mm, the time be 15~
20min。
Embodiment is enumerated further below to describe the example preparation technology of the present invention in detail.It should be understood that following embodiments
It is in order to the present invention is better described, is not intended to limit the present invention.
Embodiment 1
With Pb3O4、ZrO2、TiO2、Nb2O5It is raw material with CdO, by (Pb0.995Cd0.005)(Zr0.965Ti0.035)O3+ 1%
wtNb2O5Stoichiometric proportion proportioning, using deionized water, zirconia ball does medium, according to mixed material：Zirconia ball：Go from
Sub- water quality ratio=1:2:0.85 ratio mixing, wet ball grinding 8h；Mixed raw material is poured into container to put into after oven for drying
Briquetting, and synthesized, synthesis temperature scope is 850 DEG C of 2~4h of insulation.And synthetic block is ground obtained
PCZT95/5 ferroelectric ceramics powder；Using deionized water, zirconia ball makees medium, according to material：Zirconia ball：Deionized water quality ratio
=1:1.5:After 1 ratio wet ball grinding 24h, 6wt%PVA granulating and formings are added in discharging drying, will under 150MPa pressure
Split is compressing；The sample of forming is put into box electronic oven and carries out plastic removal, plastic removal technique is 600 DEG C of 1 hours of insulation；
Sample after plastic removal is put into alumina crucible closed sintering, firing process is 1150 DEG C of insulation 4h；By the sample sintered
It is machined according to specification requirement；The sample processed is cleaned by ultrasonic, upper silver electrode, is put into box electricity after drying
Hinder stove silver ink firing；Silver ink firing condition is 600~700 DEG C, is incubated 30min.Then the sample for being covered with electrode is put into silicone oil high voltage polarization,
Polarization condition is：Temperature is 120 DEG C, and electric field is 3~5kV/mm, and the time is 15~20min.
The main performance of material standard piece is：d33=65pC/N, Pr=38.3 μ C/cm2.Fig. 1 gives the present embodiment institute
The microstructure of material is stated, PCZT95/5 potteries of 0.5mol%CdO when sintering for 1150 DEG C is added as we can see from the figure
Porcelain is just dense.Fig. 3 gives the XRD diffracting spectrums described in the present embodiment, finds out CdO completely into crystalline substance from XRD
Lattice do not cause the second phase.Fig. 4 gives the ferroelectric hysteresis loop of material described in the present embodiment, it can be seen that when sintering for 1150 DEG C
PCZT95/5 ceramics can obtain saturation ferroelectric hysteresis loop.Fig. 6 gives the dielectric temperature spectrum described in the present embodiment, can be with from figure
It is about 213 DEG C to find out Curie temperature.
Embodiment 2
With Pb3O4、ZrO2、TiO2、Nb2O5It is raw material with CdO, according to (Pb0.99Cd0.01)(Zr0.965Ti0.035)O3+ 1wt%
Nb2O5The stoichiometric proportion proportioning of proportioning, using deionized water, zirconia ball does medium, according to mixed material：Zirconia ball：Go
Ionized water mass ratio=1:2:0.85 ratio mixing, wet ball grinding 6h；Mixed raw material is poured into container and puts oven for drying into
Briquetting, and being synthesized afterwards, synthesis temperature scope is 800 DEG C of 2~4h of insulation.And synthetic block is ground obtained
PCZT95/5 ferroelectric ceramics powder；Gained powder is used into deionized water, zirconia ball makees medium, according to material：Zirconia ball：Go from
Sub- water quality ratio=1:1.5:After 1 ratio wet ball grinding 15h, discharging drying adds 6wt%PVA granulating and formings, in 150MPa
Pressure under split is compressing；The sample of forming is put into box electronic oven and carries out plastic removal, plastic removal technique is 600 DEG C of guarantors
Warm 1 hour；Sample after plastic removal is put into alumina crucible closed sintering, firing process is 1150 DEG C of insulation 4h；It will burn
The sample tied is machined according to specification requirement；The sample processed is cleaned by ultrasonic, upper silver electrode after drying,
It is put into chamber type electric resistance furnace silver ink firing；Silver ink firing condition is 600~700 DEG C, is incubated 30min.Then the sample for being covered with electrode is put into silicon
Oily high voltage polarization, polarization condition is：Temperature is 120 DEG C, and electric field is 4kV/mm, and the time is 20min.
The main performance of gained standard film is：d33=66pC/N, Pr=39.3 μ C/cm2.Fig. 2 gives the present embodiment institute
The microstructure of material is stated, is mixed as we can see from the figure with 1mol% CdO, PCZT95/5 ceramics become finer and close and crystalline substance
Particle size is bigger than 0.5mol%CdO.Fig. 3 gives the XRD diffracting spectrums described in the present embodiment, even if as can be seen from the figure
The CdO for adding 1mol% still mutually occurs without second.Fig. 5 gives the ferroelectric hysteresis loop of material described in the present embodiment, can see
Saturation ferroelectric hysteresis loop can be obtained to incorporation 1mol%PCZT95/5 ceramics.Fig. 7 gives the dielectric temperature described in the present embodiment
Spectrum, as can be seen from the figure Curie temperature is about 209 DEG C, and CdO incorporation reduces Curie temperature.
Embodiment 3
With Pb3O4、ZrO2、TiO2、Nb2O5It is raw material with CdO, by (Pb0.985Cd0.015)(Zr0.965Ti0.035)O3+ 1wt%
Nb2O5Stoichiometric proportion proportioning, using deionized water, zirconia ball does medium, according to mixed material：Zirconia ball：Deionization
Water quality ratio=1:2:0.85 ratio mixing, wet ball grinding 6h；Mixed raw material is poured into container and puts pressure after oven for drying into
Block, and synthesized, synthesis temperature scope is 800 DEG C of 2~4h of insulation.And synthetic block is ground obtained
PCZT95/5 ferroelectric ceramics powder；Gained powder is used into deionized water, zirconia ball makees medium, according to material：Zirconia ball：Go from
Sub- water quality ratio=1:1.5:After 1 ratio wet ball grinding 15h, discharging drying adds 6wt%PVA granulating and formings, in 150MPa
Pressure under split is compressing；The sample of forming is put into box electronic oven and carries out plastic removal, plastic removal technique is 600 DEG C of guarantors
Warm 1 hour；Sample after plastic removal is put into alumina crucible closed sintering, firing process is 1150 DEG C of insulation 4h；It will burn
The sample tied is machined according to specification requirement；The sample processed is cleaned by ultrasonic, upper silver electrode after drying,
It is put into chamber type electric resistance furnace silver ink firing；Silver ink firing condition is 600~700 DEG C, is incubated 30min.Then the sample for being covered with electrode is put into silicon
Oily high voltage polarization, polarization condition is：Temperature is 120 DEG C, and electric field is 4kV/mm, and the time is 20min.The main property of material standard piece
Can be：d33=64pC/N, Pr=38.9 μ C/cm2。
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel are according to the announcement of the present invention, and not departing from improvement and modification that scope made all should be the present invention's
Within protection domain.
Claims (9)
1. a kind of PCZT95/5 ferroelectric ceramic materials, it is characterised in that its composition is represented with below general formula：
(Pb1-XCdX)(Zr0.965Ti0.035)O3+ a wt%Nb2O5, wherein, 0.005≤x≤0.03,0.8≤a≤1.2.
2. a kind of preparation method of PCZT95/5 ferroelectric ceramic materials as claimed in claim 1, it is characterised in that including following
Step：
Process A：By metal oxide Pb3O4、ZrO2、TiO2、Nb2O5, CdO is according to formula (Pb1-XCdX)(Zr0.965Ti0.035)O3+
A wt%Nb2O5In metering than proportioning, and wet ball grinding is to required granularity, wherein, 0.005≤x≤0.03,0.8≤a≤
1.2；
Process B：By briquetting after the raw material stoving after being handled through process A, synthesis obtains niobium doping vario-property and containing CdO's
PCZT95/5 ferroelectric ceramic materials；
Process C：PCZT95/5 ferroelectric ceramic material blocks by niobium doping vario-property and containing CdO grind into powder, fine grinding
Compressing acquisition biscuit afterwards；
Step D：Biscuit is excluded into organic matter；
Process E：The biscuit handled through step D is incubated to sintering acquisition in 2~5 hours at a temperature of 1100 DEG C~1150 DEG C
PCZT95/5 ferroelectric ceramic materials.
3. the preparation method of PCZT95/5 ferroelectric ceramic materials according to claim 2, it is characterised in that in the process
In A, using deionized water and zirconia ball as ball-milling medium, it is according to mass ratio by raw material, zirconia ball and deionized water
1:1.2:0.85 ratio mixes wet ball grinding to required granularity.
4. the preparation method of PCZT95/5 ferroelectric ceramic materials according to claim 2, it is characterised in that in the process
In B, synthesis temperature scope is 760 DEG C~850 DEG C, 2~4h of soaking time.
5. the preparation method of PCZT95/5 ferroelectric ceramic materials according to claim 2, it is characterised in that in the process
In C, the PZT95/5 ferroelectric ceramics blocks by niobium doping vario-property and containing CdO are ground into after powder, and fine grinding, and discharging is dried
It is dry, 5~10wt%PVA granulating and formings are added, pressed by powder shaping is obtained into biscuit under 100~200MPa pressure.
6. the preparation method of PCZT95/5 ferroelectric ceramic materials according to claim 2, it is characterised in that in the process
In C, fine grinding uses deionized water and zirconia ball as medium, by the powder, zirconia ball and deionized water according to quality
Than for 1:1.5:1 ratio mixes wet ball grinding to required granularity.
7. the preparation method of PCZT95/5 ferroelectric ceramic materials according to claim 2, it is characterised in that in the process
In D, make biscuit in 600 DEG C~700 DEG C temperature range inside holdings 2~3 hours to exclude organic matter.
8. a kind of application of PCZT95/5 ferroelectric ceramic materials as claimed in claim 1, it is characterised in that described
PCZT95/5 ferroelectric ceramic materials are used to prepare piezoelectric element.
9. the application of PCZT95/5 ferroelectric ceramic materials according to claim 8, it is characterised in that by PCZT95/5 ferroelectricities
Piezoelectric element prepared by ceramic material, when sintering temperature is less than 1150 DEG C, the piezoelectric coefficient d of the piezoelectric element33＞ 65pC/N,
The μ C/cm of remanent polarization Pr ＞ 362。
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