Preparation method of lead zirconate titanate piezoelectric ceramics

A technology of lead zirconate titanate and piezoelectric ceramics, which is applied in the field of preparation of lead zirconate titanate piezoelectric ceramics, to achieve the effects of easy industrial production, improved powder sintering activity, and low cost

Inactive Publication Date: 2012-10-10
MORNSUN GUANGZHOU SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patents on the preparation of piezoelectric powders by the hydrothermal method have been reported, but the use of powders synthesized under optimal hydrothermal conditions to significantly improve the piezoelectric properties of ceramic materials has not yet been reported on domestic patents for the preparation of high-performance piezoelectric ceramics

Method used

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  • Preparation method of lead zirconate titanate piezoelectric ceramics
  • Preparation method of lead zirconate titanate piezoelectric ceramics
  • Preparation method of lead zirconate titanate piezoelectric ceramics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthesize PZT ceramic powder and burn ceramics according to the following process steps:

[0038] (1) According to the chemical formula PbZr of PZT powder to be synthesized 0.52 Ti 0.48 o 3 , measure and weigh tetra-n-butyl titanate and zirconium oxychloride, dissolve them in absolute ethanol and deionized water respectively, configure the tetrabutyl titanate absolute ethanol solution with a concentration of 0.48mol / L and the concentration of 0.52mol / L L of zirconium oxychloride aqueous solution;

[0039] (2) Under stirring, an equal volume of zirconium oxychloride aqueous solution is added to tetrabutyl titanate absolute ethanol solution to obtain a mixed solution of zirconium and titanium ions;

[0040] (3) Adding the mixed solution of zirconium and titanium ions dropwise to an excess ammonia solution with a concentration of 0.25 mol / L under stirring, settling, filtering, and washing with deionized water to obtain co-precipitation of zirconium and titanium hydroxi...

Embodiment 2

[0051] Synthesize PZT ceramic powder and burn ceramics according to the following process steps:

[0052] (1) According to the chemical formula PbZr of PZT powder to be synthesized 0.52 Ti 0.48 o 3 , measure and weigh tetra-n-butyl titanate and zirconium oxychloride, dissolve them in absolute ethanol and deionized water respectively, configure the tetrabutyl titanate absolute ethanol solution with a concentration of 0.48mol / L and the concentration of 0.52mol / L L of zirconium oxychloride aqueous solution;

[0053] (2) Add an equal volume of zirconium oxychloride aqueous solution to the tetrabutyl titanate absolute ethanol solution under stirring to obtain a mixed solution of zirconium and titanium ions;

[0054] (3) Adding the mixed solution of zirconium-titanium ions dropwise to an excess ammonia solution with a concentration of 0.25mol / L under stirring, settling, filtering, and washing with deionized water to obtain co-precipitation of zirconium-titanium hydroxide;

[005...

Embodiment 3

[0065] Synthesize high-performance PZT ceramic powder and fire ceramics according to the following process steps.

[0066] (1) According to the chemical formula PbZr of PZT powder to be synthesized 0.52 Ti 0.48 o 3 , measure and weigh tetra-n-butyl titanate and zirconium oxychloride, dissolve them in absolute ethanol and deionized water respectively, configure the tetrabutyl titanate absolute ethanol solution with a concentration of 0.48mol / L and the concentration of 0.52mol / L L of zirconium oxychloride aqueous solution;

[0067] (2) Under stirring, the zirconium oxychloride aqueous solution is added to the tetrabutyl titanate absolute ethanol solution to obtain a mixed solution of zirconium and titanium ions;

[0068] (3) Adding the mixed solution of zirconium and titanium ions dropwise to the excess ammonia solution with a concentration of 0.25 mol / L under stirring, settling, filtering, and washing with deionized water to obtain co-precipitation of zirconium and titanium ...

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Abstract

The invention discloses a preparation method of lead zirconate titanate piezoelectric ceramics, which comprises the following steps of: (1) taking tetra-n-butyl titanate and zirconium oxychloride as main raw materials to prepare and obtain aqueous solution in which a zirconium titanium hydroxide coprecipitate is suspended, taking prepared lead nitrate solution and a mineralizing agent, uniformly mixing and carrying out magnetic stirring; (2) carrying out hydro-thermal treatment on the agitated mixed solution, cooling to a room temperature after reaction, taking a reactant, cleaning and drying to obtain solid powder; and (3) grinding the solid powder, adding an adhesive to prepare a ceramic blank sheet, sintering the ceramic blank sheet and carrying out silver electrode polarization on the sintered ceramic blank sheet to prepare the lead zirconate titanate ceramics with high voltage electrical property. The preparation method has the beneficial effects that the process is simple, the lead zirconate titanate piezoelectric ceramics have uniform powder grain size, good dispersibility and high sintering activity, and the comprehensive piezoelectric and dielectric property of the lead zirconate titanate piezoelectric ceramics is remarkably superior to that of PZT ceramics sintered by a traditional solid-phase sintering method.

Description

technical field [0001] The invention relates to a preparation method of piezoelectric ceramics, in particular to a preparation method of lead zirconate titanate piezoelectric ceramics. Background technique [0002] Lead zirconate titanate (PZT) material is a widely used piezoelectric functional material, which has many advantages such as good piezoelectric, dielectric, ferroelectric properties, easy doping modification, and good stability. Near the same-phase boundary point, PZT ceramics have high piezoelectric constants and electromechanical coupling coefficients, and are the basic materials for the preparation of ultrasonic transducers, piezoelectric transformers, filters and piezoelectric buzzers. industry plays an important role. [0003] The preparation of lead zirconate titanate powder with high purity, uniform particle size, good crystallinity and proper stoichiometric ratio is the most important prerequisite for obtaining high-quality piezoelectric devices. At pres...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622
Inventor 何云斌常钢高小琴尚勋忠韦媛洪周桃生尹向阳胡健仁
Owner MORNSUN GUANGZHOU SCI & TECH
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