Sb2O3 doped ZnOw/PZT two-phase piezoelectric composite ceramic and preparation thereof

A piezoelectric composite and ceramic technology, applied in the direction of piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problems of high brittleness and short life, achieve low cost, improve piezoelectric performance, The effect of improving mechanical properties

Inactive Publication Date: 2009-07-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention of the present invention is to provide a kind of Sb 2 o 3 Doped ZnO w / PZT two-phase piezoelectric composite ceramics and its preparation technology to solve the problems of traditional piezoelectric ceramics such as high intrinsic brittleness and short life

Method used

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  • Sb2O3 doped ZnOw/PZT two-phase piezoelectric composite ceramic and preparation thereof
  • Sb2O3 doped ZnOw/PZT two-phase piezoelectric composite ceramic and preparation thereof
  • Sb2O3 doped ZnOw/PZT two-phase piezoelectric composite ceramic and preparation thereof

Examples

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Effect test

Embodiment 1

[0020] To prepare with 0.5% Sb 2 o 3 Powder, 1% ZnO whisker dual-phase piezoelectric composite ceramics as an example, the raw material used is Sb 2 o 3 0.5 grams of powder, 1 gram of ZnO whiskers, 98.5 grams of PZT powder, 6 grams of polyvinyl alcohol solution with a concentration of 5 wt%. The specific operation is as follows:

[0021] 1) At room temperature, ZnO nano whiskers, PZT powder, Sb 2 o 3 Mix the powder and alcohol in a ball mill and mill for 3 hours; add the polyvinyl alcohol solution to the powder and mix and mill for 24 hours; dry and stir the obtained mixture in a blast drying oven at 100°C for 10 hours to form a solid, then Grind and pass through a 60-mesh sieve into powder;

[0022] 2) Press the powder in a stainless steel grinding tool (1t / cm 2 ) into green bodies, which can be pressed into green bodies of different sizes and styles required by using different abrasive tools, such as discs and strips. ℃, keep the temperature for 2 hours for debinding...

Embodiment 2

[0024] To prepare with 1% Sb 2 o 3 Powder, 2% ZnO whisker biphasic piezoelectric composite ceramics as an example, the raw material used is Sb 2 o 3 1 gram of powder, 1 gram of ZnO whiskers, 98 grams of PZT powder, 8 grams of polyvinyl alcohol solution with a concentration of 5 wt%. The specific operation is as follows:

[0025] 1) At room temperature, ZnO nano whiskers, PZT powder, Sb 2 o 3 Mix the powder and alcohol in a ball mill, and mill for 5 hours; add polyvinyl alcohol solution to the powder and mix, and mill for 12 hours; dry and stir the obtained mixture in a blast drying oven at 150°C for 5 hours to form a solid, and then Grind and pass through a 60-mesh sieve into powder;

[0026] 2) Press the powder in a stainless steel grinding tool (1t / cm 2 ) into green bodies, which can be pressed into green bodies of different sizes and styles required by using different abrasive tools, such as discs and strips. ℃, keep the temperature for 2 hours for debinding; then r...

Embodiment 3

[0028] To prepare with 2% Sb 2 o 3 Powder, 5% ZnO whiskers biphasic piezoelectric composite ceramics as an example, the raw material used is Sb 2 o 3 2 grams of powder, 1 gram of ZnO whiskers, 97 grams of PZT powder, 8 grams of polyvinyl alcohol solution with a concentration of 4 wt%. The specific operation is as follows:

[0029] 1) At room temperature, ZnO nano whiskers, PZT powder, Sb 2 o 3 Mix the powder and alcohol in a ball mill, and ball mill for 8 hours; add polyvinyl alcohol solution to the powder and mix, and ball mill for 18 hours; dry and stir the obtained mixture in a blast drying oven at 110°C for 6 hours to form a solid, and then Grind and pass through a 60-mesh sieve into powder;

[0030] 2) Press the powder in a stainless steel grinding tool (1t / cm 2 ) into green bodies, which can be pressed into green bodies of different sizes and styles required by using different abrasive tools, such as discs and strips. ℃, hold the temperature for 2 hours for debindi...

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Abstract

The invention relates to Sb2O3-doped ZnOw / PZT biphase piezoelectric composite ceramics and a preparation method thereof, and belongs to the field of inorganic non-metallic material science. The Sb2O3-doped ZnOw / PZT biphase piezoelectric composite ceramics comprise the following raw materials: Sb2O3 powder, nano ZnO crystal whiskers and plumbum zirconate titanate (PZT) ceramic powder. The preparation method comprises: uniformly mixing the ZnO crystal whiskers, the PZT powder and the Sb2O3 powder first, adding a polyvinyl alcohol solution in a system for ball milling and stirring, performing drying, crushing, fine grinding, sieving, and dry pressing and forming, preparing the composite ceramics through binder removal and sintering, and performing cutting processing and polarization aging. Compared with the prior ZnOw / PZT piezoelectric ceramics, the Sb2O3-doped ZnOw / PZT biphase piezoelectric composite ceramics greatly improve the prior piezoelectricity and strengthen the mechanical property, are novel biphase piezoelectric composite ceramics with wide application prospect, have simple preparation operation technique and low cost, and can meet the requirements of industrial promotion and application.

Description

technical field [0001] The present invention relates to Sb 2 o 3 Doped ZnO w / PZT two-phase piezoelectric composite ceramics and its preparation technology belong to the field of preparation of advanced fine functional ceramics. Background technique [0002] Lead zirconate titanate (PZT) piezoelectric ceramic material system is widely used in various fields such as aviation, aerospace, weapons, ships and civil high technology due to its excellent dielectric, piezoelectric and ferroelectric properties. Traditional lead zirconate titanate (PZT) piezoelectric ceramics have inherent brittleness, short life, high cost and environmental pollution, which makes PZT ceramics are facing very severe challenges. Although some progress has been made in piezoelectric material technology in recent years, there has been no essential progress in terms of overall technology. For example, the performance of metal-doped PZT is limited; the dielectric constant of the fiber matrix of the piez...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622H01L41/187
Inventor 曹茂盛王大伟袁杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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