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Lead-based perovskite structure high-temperature piezoelectric ceramic and preparation method thereof

A perovskite structure, high-temperature piezoelectric technology, applied in the field of piezoelectric ceramic material preparation, to achieve the effects of increasing strain, improving piezoelectricity, and optimizing ferroelectricity

Active Publication Date: 2020-05-19
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0005] The present invention aims at the situation that the Curie temperature and comprehensive piezoelectric performance of the existing piezoelectric ceramic materials cannot meet specific indicators at the same time, and provides a high Curie temperature, high piezoelectric coefficient, large remnant polarization, large strain and stable temperature. High temperature piezoelectric ceramic materials with excellent lead-based perovskite structure

Method used

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  • Lead-based perovskite structure high-temperature piezoelectric ceramic and preparation method thereof
  • Lead-based perovskite structure high-temperature piezoelectric ceramic and preparation method thereof
  • Lead-based perovskite structure high-temperature piezoelectric ceramic and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0030] In some examples, the preparation method of the perovskite structure high temperature piezoelectric ceramic material may include the following steps:

[0031] Step (a), weighing Bi according to the stoichiometric ratio 2 o 3 , PbO, SnO 2 , Sc 2 o 3 , Nb 2 o 5 ,TiO 2 Powder; (1-x)[0.36BiScO 3 -0.64PbTiO 3 ]-xBi(Sn 1 / 3 Nb 2 / 3 )O 3 Ceramic powder.

[0032] The primary wet planetary ball mill is mixed for 2-6 hours according to the mass ratio of raw material: ball milling medium: water = 1: (1.2-1.8): (0.5-0.9). The ball milling medium can be agate balls.

[0033] In addition, the synthesis condition is to synthesize at 600-900° C. for 2-4 hours. Preferably, the temperature is raised to 700-900°C at a heating rate not higher than 2°C / min, kept for 1-3 hours, cooled to room temperature with the furnace, and taken out to obtain a composite.

[0034] The secondary planetary ball mill can be finely ground for 4-8 hours according to the mass ratio of composition: ...

Embodiment 1

[0048] Example 1 is basically the same as Comparative Example 1, the only difference is: x=0.01.

Embodiment 2

[0050] Example 2 is basically the same as Comparative Example 1, the only difference is: x=0.02.

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Abstract

The invention relates to lead-based perovskite structure high-temperature piezoelectric ceramic and a preparation method thereof, the chemical composition of the lead-based perovskite structure high-temperature piezoelectric ceramic is (1-x)[0.36BiScO3-0.64PbTiO3]-xBi(Sn1 / 3Nb2 / 3)O3, and x is greater than 0 and less than or equal to 0.03.

Description

technical field [0001] The invention belongs to the field of preparation of piezoelectric ceramic materials, and relates to a high-temperature piezoelectric ceramic with a lead-based perovskite structure and a preparation method thereof. Background technique [0002] Piezoelectric materials, as a class of functional materials that can convert electrical energy and mechanical energy, are widely used in electronic communications, medical equipment, aerospace and other fields. Piezoelectric materials are divided into piezoelectric single crystals, piezoelectric ceramics, piezoelectric polymers, and piezoelectric composite materials. Occupying most of the market share, it plays an irreplaceable role in many devices and has a very broad prospect. [0003] Nowadays, with the development of industry and science and technology, in the fields of atomic energy, energy, aerospace, automobiles, etc., piezoelectric devices such as high-precision drives and detection transducers that wor...

Claims

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Application Information

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IPC IPC(8): C04B35/472C04B35/622C04B41/88
CPCC04B35/472C04B35/622C04B41/009C04B41/5116C04B41/88C04B2235/3224C04B2235/3232C04B2235/3251C04B2235/3293C04B2235/3296C04B2235/3298C04B2235/5427C04B2235/602C04B2235/656C04B2235/6562C04B2235/6567C04B41/4535C04B41/0072
Inventor 董显林董亚珠周志勇
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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