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Bismuth ferrite-lead titanate-barium stannate titanate ternary system high-temperature piezoelectric ceramic material and preparation method thereof

A ceramic material, high-temperature piezoelectric technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problem of low piezoelectric coefficient, reduce lattice distortion, reduce leakage The effect of guiding and reducing unit cell parameters

Active Publication Date: 2020-06-26
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the existing bismuth ferrite-lead titanate-based high-temperature piezoelectric ceramic has a high Curie temperature but a low piezoelectric coefficient, the present invention provides a ternary system of bismuth ferrite-lead titanate-titanium stannate A high-temperature piezoelectric ceramic material and a preparation method thereof, the material has good piezoelectric properties, high Curie temperature and good sintering characteristics, and is expected to be applied in the field of high-temperature piezoelectric ceramic devices

Method used

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  • Bismuth ferrite-lead titanate-barium stannate titanate ternary system high-temperature piezoelectric ceramic material and preparation method thereof

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preparation example Construction

[0033] The preparation method of the material is a traditional solid-phase synthesis process, including ball milling mixing, pre-sintering synthesis, secondary ball milling, granulation and tabletting, sintering, silver brushing and polarization. The ceramic material provided by the invention has the advantages of easy sintering, excellent piezoelectric performance, high Curie temperature, etc., and is very suitable for application in the field of high-temperature piezoelectric ceramic devices.

[0034] The preparation method of the bismuth ferrite-based high-temperature piezoelectric ceramic material in one embodiment of the present invention is shown below.

[0035] Step a), according to (1-x-y)BiFeO 3 -xPbTiO 3 -yBa(Sn 1 / 5 Ti 4 / 5 )O 3 +zMnCO 3 General formula, with high purity Bi 2 o 3 , Fe 2 o 3 , Pb 3 o 4 、TiO 2 、BaCO 3 , SnO 2 and MnCO 3 For the raw material powder, the raw material is wet ball milled, mixed evenly and dried. For example, each raw materia...

Embodiment 1

[0044] The composition of a bismuth ferrite-based ternary high-temperature piezoelectric ceramic material is selected as: 0.63BiFeO 3 -0.24PbTiO 3 -0.13Ba(Sn 1 / 5 Ti 4 / 5 )O 3 +0.15%wtMnCO 3 .

[0045] The preparation method of the above-mentioned high-temperature piezoelectric ceramic material comprises the following steps:

[0046] a) with high purity Bi 2 o 3 , Fe 2 o 3 , Pb 3 o 4 、TiO 2 、BaCO 3 , SnO 2 and MnCO 3 For raw material powder, according to 0.63BiFeO 3 -0.24PbTiO 3 -0.13Ba(Sn 1 / 5 Ti 4 / 5 )O 3 +0.15%wtMnCO 3 The general formula accurately weighs a total of 50g, put the raw materials into a ball mill tank, use absolute ethanol as the ball mill medium, mix and ball mill on a planetary ball mill for 6 hours, and put the material out into a 100°C oven for rapid drying;

[0047] b) After the uniformly mixed powder is sieved and compacted, the temperature is raised to 800-820°C at a heating rate of 5°C / min, and calcined at 800-820°C for 4-6 hours to ob...

Embodiment 2

[0059] In this embodiment, the composition of a bismuth ferrite-based ternary high-temperature piezoelectric ceramic material is selected as: 0.60BiFeO 3 -0.24PbTiO 3 -0.16Ba(Sn 1 / 5 Ti 4 / 5 )O 3 +0.12%wtMnCO 3 .

[0060] The preparation method of the above-mentioned high-temperature piezoelectric ceramic material comprises the following steps:

[0061] a) with high purity Bi 2 o 3 , Fe 2 o 3 , Pb 3 o 4 、TiO 2 、BaCO 3 , SnO 2 and MnCO 3For raw material powder, according to 0.60BiFeO 3 -0.24PbTiO 3 -0.16Ba(Sn 1 / 5 Ti 4 / 5 )O 3 +0.12%wtMnCO 3 The general formula accurately weighs a total of 50g, put the raw materials into a ball mill tank, use absolute ethanol as the ball mill medium, mix and ball mill on a planetary ball mill for 6 hours, and put the material out into a 100°C oven for rapid drying;

[0062] b) After sieving and briquetting the uniformly mixed powder, raise the temperature to 800-820°C at a heating rate of 5°C / min, and calcinate at 800-820°C for...

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Abstract

The invention discloses a bismuth ferrite-lead titanate-barium stannate titanate ternary system high-temperature piezoelectric ceramic material and a preparation method thereof, wherein the chemical composition of the bismuth ferrite-lead titanate-barium stannate titanate ternary system high-temperature piezoelectric ceramic material is (1-x-y)BiFeO3-xPbTiO3-yBa(Sn1 / 5Ti4 / 5)O3+zMnCO3, x and y are molar ratios, x is greater than or equal to 0.20 and less than or equal to 0.26, y is greater than or equal to 0.13 and less than or equal to 0.18, and z is the weight ratio, and is greater than or equal to 0 and less than or equal to 0.15 wt% based on the total weight of the powder during synthesis of the ceramic material.

Description

technical field [0001] The invention relates to a piezoelectric material and a preparation method thereof, in particular to a ternary system bismuth ferrite-based high-temperature piezoelectric ceramic material and a preparation method thereof, belonging to the technical field of functional ceramic materials. Background technique [0002] Piezoelectric ceramics, as a thermal, force, and light-sensitive functional material, have been widely used in sensors, transformers, ultrasonic transducers, micro-displacers, and other electronic components. With the rapid development of aerospace, automobile, chemical and other industries, the requirements for high temperature stability of piezoelectric materials are also increasing. In order to meet the requirements of high-temperature applications, there is an urgent need for high-temperature piezoelectric ceramic devices that can work normally in high-temperature environments without failure. [0003] In order to obtain piezoelectric ...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622C04B41/88H01L41/187
CPCC04B35/2633C04B35/2658C04B35/2683C04B35/622C04B41/009C04B41/5116C04B41/88C04B2235/3298C04B2235/3272C04B2235/3296C04B2235/3232C04B2235/3215C04B2235/3293C04B2235/3262C04B2235/602C04B2235/656C04B2235/6567C04B2235/6562H10N30/8536H10N30/8548H10N30/8561
Inventor 李国荣喻卓曾江涛郑嘹赢时雪
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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