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

A ceramic material, barium titanium stannate technology, applied in the direction of piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problem of low piezoelectric coefficient

Active Publication Date: 2021-08-06
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • 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-titanium stannate ternary system high-temperature piezoelectric ceramic material and preparation method thereof
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  • Bismuth ferrite-lead titanate-titanium stannate 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-titanium stannate ternary system high-temperature piezoelectric ceramic material and a preparation method thereof. The chemical composition of the bismuth ferrite-lead titanate-titanium stannate ternary system high-temperature piezoelectric ceramic material is (1-x-y) BiFeO 3 ‑xPbTiO 3 ‑yBa(Sn 1 / 5 Ti 4 / 5 )O 3 +zMnCO 3 ; Wherein, x and y are the molar ratio, 0.20≤x≤0.26, 0.13≤y≤0.18; z is the weight ratio, based on the total weight of the powder when synthesizing the ceramic material, 0≤z≤0.15wt%.

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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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/26C04B35/622C04B41/88H01L41/187H10N30/853
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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