CN104529441A - 3-1 type piezoelectric ceramic and preparation method thereof - Google Patents
3-1 type piezoelectric ceramic and preparation method thereof Download PDFInfo
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- CN104529441A CN104529441A CN201410793035.5A CN201410793035A CN104529441A CN 104529441 A CN104529441 A CN 104529441A CN 201410793035 A CN201410793035 A CN 201410793035A CN 104529441 A CN104529441 A CN 104529441A
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Abstract
The invention relates to a preparation method of 3-1 type piezoelectric ceramic, and belongs to the technical field of ceramic product. The processing method of the 3-1 type piezoelectric ceramic comprises the following steps: mixing PZT powder with a sodium alginate solution; defoaming in vacuum; injecting into a mold; spraying a cationic complexing agent; exchanging cations; drying; and sintering. With respect to the defects of an existing piezoelectric ceramic processing technology, the 3-1 type piezoelectric ceramic is prepared from high-performance PZT powder as a raw material by a sodium alginate ionic gelation method. The preparation method provided by the invention is simple in process; the 3-1 type piezoelectric ceramic has high sensitivity and compressive strength, and can be widely applied to a hydroacoustic transducer and a medical ultrasonic transducer.
Description
Technical field
The present invention relates to a kind of pottery and preparation method thereof, particularly a kind of preparation method of 3-1 type piezoelectric ceramics, belongs to technical field of ceramic production.
Background technology
Piezoelectric ceramics refers to the polycrystal after oxide compound mixing high temperature sintering, solid state reaction, and the general designation of the ferroelectric ceramic(s) of piezoelectric effect is made it have by high direct voltage polarization process, that one converts electrical energy into mechanical energy, or mechanical energy is converted to the function ceramics of electric energy, mainly for the manufacture of ultrasonic transducer, underwater acoustic transducer, electroacoustics transducer, ceramic filter, ceramic transformer, ceramic discriminator, high pressure producer, infrared eye, surface acoustic wave device, electro-optical device, ignition and blasting device and piezolectric gyroscope etc.Utilize piezoelectric ceramics mechanical energy to be converted to the characteristic of electric energy, piezolighter, mobile X-ray power supply, shell igniter can be produced; With piezoelectric ceramics, electric energy is converted to ultrasonic vibration, can be used for seeking position and the shape of the shoal of fish under water, non-destructive test(ing)(NDT) is carried out to metal, and ultrasonic cleaning, ultrasonic medical, various ultrasonic slitter, welding plant and flatiron can also be made, to plastics even metal process.
The sensitivity characteristic that piezoelectric ceramics has; can extremely faint mechanical vibration be converted to electrical signal; even can sense that tens meters of outer winged insects pat wing to the disturbance of air to the sensitivity of external force; can be used for sonar system, aerological sounding, remote measurement environment protection, household electrical appliance etc.; piezoelectricity seismograph is made with it; accurately can measure earthquake strength, indicate the azimuth-range of earthquake, this can't but be a large outstanding service of piezoelectric ceramics.The deformation quantity that piezoelectric ceramics produces under electric field action is very little, be no more than at most 1/10000000th of size own, based on accurate controlling organization---the piezoelectric actuator that this principle is manufactured, the field such as control, microelectronics, biotechnology for precision instrument and machinery is all a large Gospel.
Pb-based lanthanumdoped zirconate titanates (PZT) piezoelectric ceramics has high Curie temperature, excellent dielectric and piezoelectric properties and reliability, is the preferred material of highly sensitive underwater sound sensor and medical supersonic transducer.The PZT piezoelectric ceramics hydrostaticpressure quality factor HFOM of densified sintering product is lower, specific acoustic resistance is comparatively large, during for during underwater sound sensor field and medical supersonic transducer field, can reduce the sensitivity of device and the resolving power of medical supersonic transducer imaging.Porous PZT piezoelectric ceramics by piezoelectric ceramics mutually in introduce there is low density, low-dielectric and the air phase without piezoelectricity, the HFOM value of material can be significantly improved, reduction specific acoustic resistance, add the sensitivity of material and the acoustical match of material and medium.
Chinese invention " piezoelectric ceramics ", application number 200480008671.7 disclose a kind of not leaded, Curie temperature is high and have the piezoelectric ceramics of excellent piezoelectric property and king-sized Qmax value, but physical strength is lower.
Invent and a kind ofly can overcome uneven, the relative permittivity of pore size distribution that the existing 3-1 type piezoelectric ceramics course of processing exists and the lower problem of physical strength, possess excellent dielectric, piezoelectricity and mechanical property, porosity and the controlled PZT porous piezoceramics preparation technology of pore size distribution have very large realistic meaning.
Summary of the invention
The object of the invention is, for the deficiency of existing piezoelectric ceramics processing technology, provide a kind of 3-1 type piezoelectric ceramics and preparation method thereof, this ceramic process is simple, can be widely used in underwater sound sensor and medical supersonic transducer.
To achieve these goals, the present invention is achieved by the following technical solutions:
A preparation method for 3-1 type piezoelectric ceramics, comprises the steps:
(1) by PZT ceramic powder, dispersion agent and sodium alginate premixed liquid mixing and ball milling 6 h(rotating speed are 800 r/min), obtain finely dispersed ceramic size;
(2) pour mould into after ceramic size froth in vacuum, and adopt spraying plant evenly to spray the solution containing solidifying agent in pulp surface, form initial film.Ca will be remained again
2+solution is poured mould into and is left standstill 36 h, and ionic gelation process occurs, and forms the PZT ceramic body of polynuclear plane;
(3) porous ceramics base substrate is soaked 24 h in grape acid lactone and HCl solution, remove the positively charged ion in gel network, prevent foreign ion from sintering process, entering PZT crystalline phase, piezoelectric ceramics performance is reduced;
(4) ceramic wet blank is dry, and in rich plumbous environment high temperature sintering, obtained 3-1 type PZT pottery.
Step (1) described preparation 2 wt% sodium alginate acts on ionic gelation process formed honeycomb pottery;
1 mol/L Ca is selected described in step (2)
2+divalent cation is as solidifying agent;
Select 1 mol/L grape acid lactone and 1 mol/L HCl solution to replace positively charged ion described in step (3);
1150 DEG C of high temperature sintering 2 h are selected described in step (4).
Through repetition test and further investigation, prepared pottery adopts Ca
2+as solidifying agent, even aperture distribution can be obtained, there is the ceramic honey comb idiosome of directed through-hole structure; Replace positively charged ion with 1 mol/L grape acid lactone and 1 mol/L HCl solution can ensure that part is complete and do not ftracture; The concentration of sodium alginate is that 2 wt% are best.
The invention has the beneficial effects as follows:
This 3-1 type piezoelectric ceramics selects the sodium alginate of appropriate amount to act on ionic gelation process formed honeycomb pottery, selects Ca
2+as solidifying agent, select grape acid lactone and HCl solution to replace positively charged ion, and the concentration of these compositions is adjusted, make the 3-1 type piezoelectric ceramics of preparation have higher relative permittivity and physical strength, and lower piezo-electric modulus and hydrostaticpressure quality factor.
Embodiment
Be described in further details the present invention below by example, these examples are only used for the present invention is described, do not limit the scope of the invention;
Embodiment 1
A kind of preparation method of 3-1 type piezoelectric ceramics: the steps include:
(1) by PZT ceramic powder, dispersion agent and 5 wt% sodium alginate premixed liquid mixing and ball milling 6 h(rotating speeds are 800 r/min), obtain finely dispersed ceramic size;
(2) pour mould into after ceramic size froth in vacuum, and adopt spraying plant evenly to spray containing 0.5 mol/L Ca in pulp surface
2+the solution of divalent cation, forms initial film.Ca will be remained again
2+solution is poured mould into and is left standstill 36 h, and ionic gelation process occurs, and forms the PZT ceramic body of polynuclear plane;
(3) porous ceramics base substrate is soaked 24 h in 1 mol/L grape acid lactone and 1 mol/L HCl solution, remove the positively charged ion in gel network, prevent foreign ion from sintering process, entering PZT crystalline phase, piezoelectric ceramics performance is reduced;
(4) ceramic wet blank is dry, and in rich plumbous environment 1150 DEG C of high temperature sintering 2 h, obtained 3-1 type PZT pottery.
Embodiment 2
A kind of preparation method of 3-1 type piezoelectric ceramics: the steps include:
(1) by PZT ceramic powder, dispersion agent and 5 wt% sodium alginate premixed liquid mixing and ball milling 6 h(rotating speeds are 800 r/min), obtain finely dispersed ceramic size;
(2) pour mould into after ceramic size froth in vacuum, and adopt spraying plant evenly to spray containing 1.5 mol/L Ca in pulp surface
2+the solution of divalent cation, forms initial film.Ca will be remained again
2+solution is poured mould into and is left standstill 36 h, and ionic gelation process occurs, and forms the PZT ceramic body of polynuclear plane;
(3) porous ceramics base substrate is soaked 24 h in 0.5 mol/L grape acid lactone and 0.5 mol/L HCl solution, remove the positively charged ion in gel network, prevent foreign ion from sintering process, entering PZT crystalline phase, piezoelectric ceramics performance is reduced;
(4) ceramic wet blank is dry, and in rich plumbous environment 1130 DEG C of high temperature sintering 2 h, obtained 3-1 type PZT pottery.
Embodiment 3
A kind of preparation method of 3-1 type piezoelectric ceramics: the steps include:
(1) by PZT ceramic powder, dispersion agent and 5 wt% sodium alginate premixed liquid mixing and ball milling 6 h(rotating speeds are 800 r/min), obtain finely dispersed ceramic size;
(2) pour mould into after ceramic size froth in vacuum, and adopt spraying plant evenly to spray containing 2 mol/L Ca in pulp surface
2+the solution of divalent cation, forms initial film.Ca will be remained again
2+solution is poured mould into and is left standstill 36 h, and ionic gelation process occurs, and forms the PZT ceramic body of polynuclear plane;
(3) porous ceramics base substrate is soaked 24 h in 1.5 mol/L grape acid lactones and 1.5 mol/L HCl solution, remove the positively charged ion in gel network, prevent foreign ion from sintering process, entering PZT crystalline phase, piezoelectric ceramics performance is reduced;
(4) ceramic wet blank is dry, and in rich plumbous environment 1180 DEG C of high temperature sintering 2 h, obtained 3-1 type PZT pottery.
Claims (6)
1. a preparation method for 3-1 type piezoelectric ceramics, is characterized in that: comprise the following steps:
(1) by PZT ceramic powder, dispersion agent and sodium alginate premixed liquid mixing and ball milling 6 h(rotating speed are 800 r/min), obtain finely dispersed ceramic size;
(2) pour mould into after ceramic size froth in vacuum, and adopt spraying plant evenly to spray the solution containing solidifying agent in pulp surface, form initial film; Ca will be remained again
2+solution is poured mould into and is left standstill 36 h, and ionic gelation process occurs, and forms the PZT ceramic body of polynuclear plane;
(3) porous ceramics base substrate is soaked 24 h in grape acid lactone and HCl solution, remove the positively charged ion in gel network, prevent foreign ion from sintering process, entering PZT crystalline phase, piezoelectric ceramics performance is reduced;
(4) ceramic wet blank is dry, and in rich plumbous environment high temperature sintering, obtained 3-1 type PZT pottery.
2. the preparation method of a kind of 3-1 type piezoelectric ceramics according to claim 1, is characterized in that: select 2 wt% sodium alginates to act on ionic gelation process formed honeycomb pottery described in step (1).
3. the preparation method of a kind of 3-1 type piezoelectric ceramics according to claim 1, is characterized in that: select 1 mol/L Ca described in step (2)
2+divalent cation is as solidifying agent.
4. the preparation method of a kind of 3-1 type piezoelectric ceramics according to claim 1, is characterized in that: select 1 mol/L grape acid lactone and 1 mol/L HCl solution replacement positively charged ion described in step (3).
5. the preparation method of a kind of 3-1 type piezoelectric ceramics according to claim 1, is characterized in that: select 1150 DEG C of high temperature sintering 2 h in rich plumbous environment described in step (4).
6. a 3-1 type piezoelectric ceramics, is characterized in that: the method according to claim 1 ~ 5 any one claim obtains carborundum porous ceramics.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413998A (en) * | 2015-11-09 | 2016-03-23 | 深圳先进技术研究院 | Linear array transducer and manufacturing method thereof |
| CN106747610A (en) * | 2017-02-10 | 2017-05-31 | 西安科技大学 | A kind of preparation method of porous leadless piezoelectric ceramics |
| CN112047743A (en) * | 2020-09-14 | 2020-12-08 | 江苏金石研磨有限公司 | Gel type slurry for ceramic grinding ball rolling forming and method thereof |
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| EP0470898A1 (en) * | 1990-08-07 | 1992-02-12 | Thomson-Csf | Piezoelectric ceramic with controlled porosity |
| CN102757226A (en) * | 2011-04-26 | 2012-10-31 | 中国科学院声学研究所 | Preparation method of fine piezoelectric ceramic tube |
| CN103553605A (en) * | 2013-10-15 | 2014-02-05 | 陕西科技大学 | KNN-BF leadless piezoelectric ceramic and preparation method thereof |
| CN103739285A (en) * | 2013-11-21 | 2014-04-23 | 中北大学 | Oxide toughened porous lead zirconate titanate piezoelectric ceramic preparation method |
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2014
- 2014-12-20 CN CN201410793035.5A patent/CN104529441A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0470898A1 (en) * | 1990-08-07 | 1992-02-12 | Thomson-Csf | Piezoelectric ceramic with controlled porosity |
| CN102757226A (en) * | 2011-04-26 | 2012-10-31 | 中国科学院声学研究所 | Preparation method of fine piezoelectric ceramic tube |
| CN103553605A (en) * | 2013-10-15 | 2014-02-05 | 陕西科技大学 | KNN-BF leadless piezoelectric ceramic and preparation method thereof |
| CN103739285A (en) * | 2013-11-21 | 2014-04-23 | 中北大学 | Oxide toughened porous lead zirconate titanate piezoelectric ceramic preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 徐静等: "氧化钙含量对3-1型多孔压电陶瓷性能的影响", 《硅酸盐通报》, vol. 33, no. 2, 28 February 2014 (2014-02-28) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105413998A (en) * | 2015-11-09 | 2016-03-23 | 深圳先进技术研究院 | Linear array transducer and manufacturing method thereof |
| CN105413998B (en) * | 2015-11-09 | 2018-06-19 | 深圳先进技术研究院 | Linear array transducer and preparation method thereof |
| CN106747610A (en) * | 2017-02-10 | 2017-05-31 | 西安科技大学 | A kind of preparation method of porous leadless piezoelectric ceramics |
| CN112047743A (en) * | 2020-09-14 | 2020-12-08 | 江苏金石研磨有限公司 | Gel type slurry for ceramic grinding ball rolling forming and method thereof |
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