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High-power piezoelectric material and preparation method thereof

A piezoelectric material and mixing technology, applied in the field of high-power piezoelectric materials and their preparation, can solve the problems that power capacity cannot adapt to the application of high-power ultrasonic equipment, poor mechanical properties, etc., and achieve transgranular fracture and improved mechanical properties. , the effect of reducing tanδ

Active Publication Date: 2013-12-25
WUXI ZHONGKE ULTRASONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PZT-8 piezoelectric materials have always troubled people: poor mechanical properties, and power capacity cannot adapt to the application of high-power ultrasonic equipment

Method used

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  • High-power piezoelectric material and preparation method thereof
  • High-power piezoelectric material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Dosing according to the chemical composition as described below, pre-briquetting after mixing, pre-calcination, and secondary pre-calcination to obtain substance a;

[0050] (2) The substance a is ball milled, pulverized with D50≤0.7 μm, granulated, molded and then plasticized, then sintered, surface milled, externally rounded and internally rounded to obtain substance b;

[0051] (3) Substance b is subjected to top electrode, polarization and aging treatment to obtain a piezoelectric material.

[0052] The chemical composition of the final piezoelectric material is shown below:

[0053] Pb(Zr 0.45 Ti 0.55 )O 3 +0.015mol%CaFeO 5 / 2 +1 / 10000wt% glass phase+1 / 10000wt%CeO 2

[0054] The mol% and wt% are based on Pb(Zr 0.45 Ti 0.55 )O 3 as the benchmark.

Embodiment 2

[0056] (1) Dosing according to the chemical composition as described below, pre-briquetting after mixing, pre-calcination, and secondary pre-calcination to obtain substance a;

[0057] (2) The substance a is ball milled, pulverized with D50≤0.7 μm, granulated, molded and then plasticized, then sintered, surface milled, externally rounded and internally rounded to obtain substance b;

[0058] (3) Substance b is subjected to top electrode, polarization and aging treatment to obtain a piezoelectric material.

[0059] The chemical composition of the final piezoelectric material is shown in the following formula:

[0060] Pb 1-x Sr x (Zr y Ti 1-y )O 3 +0.095mol%CaFeO 5 / 2 +3 / 10000wt% glass phase+1 / 1000wt%CeO 2

[0061] Wherein, x is 0.1, y is 0.55, and described mol% and wt% are represented by Pb 1-x Sr x (Zr y Ti 1-y )O 3 as the benchmark.

Embodiment 3

[0063] (1) Dosing according to the chemical composition as described below, pre-briquetting after mixing, pre-calcination, and secondary pre-calcination to obtain substance a;

[0064] (2) The substance a is ball milled, pulverized with D50≤0.7 μm, granulated, molded and then plasticized, then sintered, surface milled, externally rounded and internally rounded to obtain substance b;

[0065] (3) Substance b is subjected to top electrode, polarization and aging treatment to obtain a piezoelectric material.

[0066] The chemical composition of the final piezoelectric material is shown in the following formula:

[0067] Pb 1-x Sr x (Zr y Ti 1-y )O 3 +0.055mol%CaFeO 5 / 2 +3 / 1000wt% glass phase+1 / 2500wt%CeO 2

[0068] Wherein, x is 0.05, y is 0.50, and described mol% and wt% are represented by Pb 1-x Sr x (Zr y Ti 1-y )O 3 as the benchmark.

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Abstract

The invention relates to a high-power piezoelectric material. The piezoelectric material has a chemical composition shown in a formula (I). Doping modification is carried out on the existing PZT (piezoelectric transducer) ceramic material by doping metal elements, so as to obtain the piezoelectric material with the chemical composition shown in the formula (I), the mechanical property of the piezoelectric material is improved, the power capacity is greatly improved based on the original performance advantages, and the piezoelectric material can be applied to high-power ultrasonic equipment.

Description

technical field [0001] The invention relates to a piezoelectric material and a preparation method thereof, in particular, the invention relates to a high-power piezoelectric material and a preparation method thereof. Background technique [0002] Materials can be divided into two categories: structural materials and functional materials in terms of performance. Among them, structural materials are based on their mechanical properties such as strength, toughness, hardness, and elasticity. Functional materials are based on their electrical, magnetic, optical, sound, thermal, etc. Based on physical properties, it is used to make devices with special functions. Piezoelectric materials are functional materials that convert mechanical energy to electrical energy. They are electronic materials that are sensitive to mechanics, electricity, sound, light, and heat. They are widely used in industrial sectors and high-tech fields. [0003] Piezoelectric materials are divided into piezo...

Claims

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Application Information

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IPC IPC(8): C04B35/491C04B35/622
Inventor 陈国超陈伟
Owner WUXI ZHONGKE ULTRASONIC TECH
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