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High-performance piezoelectric ceramic and preparation method thereof

A piezoelectric ceramics, high-performance technology, applied in the field of piezoelectric ceramics, can solve the problems of general performance of piezoelectric ceramics in PZT system, and achieve the effects of excellent performance, high quality factors, and simple preparation process

Active Publication Date: 2021-01-05
李茂洪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the general technical problem of the comprehensive performance of the existing PZT system piezoelectric ceramics, the present invention provides a high-performance piezoelectric ceramic with the advantages of high density, high power, high efficiency and high quality factors. This application is a modified The rigid PZT system piezoelectric ceramics has high power bearing capacity, which is extremely suitable for power transducers with extremely high power and high drive requirements, and can be widely used in high-power acoustic welding, fishery detection and other sensors with extremely high power requirements.

Method used

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  • High-performance piezoelectric ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The general chemical formula of the high-performance piezoelectric ceramic is:

[0031] Pb 0.953 Sr 0.047 (Mg 1 / 3 Nb 2 / 3 ) 0.6 Zr 0.25 Ti 0.6 o 3 +0.7%CeO 2 +0.2%PbO+0.1%CuO+0.25%Nb 2 o 5 ;

[0032] A preparation method of high-performance piezoelectric ceramics, comprising the following steps:

[0033] 1) with Pb 3 o 4 , MgO, Nb 2 o 5 As raw material, according to Pb (Mg 1 / 3 Nb 2 / 3 )O 3 Mix the ratio evenly, and incubate at a temperature of 1100°C for 3 hours to synthesize Pb(Mg 1 / 3 Nb 2 / 3 )O 3 ;

[0034] 2) with Pb(Mg 1 / 3 Nb 2 / 3 )O 3 , SrCO 3 、TiO 2 , ZrO 2 , Nb 2 o 5 , CeO 2 , PbO, CuO as raw materials, according to Pb 0.953 Sr 0.047 (Mg 1 / 3 Nb 2 / 3 ) 0.6 Zr 0.25 Ti 0.6 o 3 +0.7%CeO 2 +0.2%PbO+0.1%CuO+0.25%Nb 2 o 5 Mix the ratio evenly, and obtain Pb after 4 hours of heat preservation at 850°C 0.953 Sr 0.047 (Mg 1 / 3 Nb 2 / 3 ) 0.6 Zr 0.25 Ti 0.6 o 3 +0.7%CeO 2 +0.2%PbO+0.1%CuO+0.25%Nb 2 o 5 mixed powder;

[0035] 3) P...

Embodiment 2

[0038] The general chemical formula of the high-performance piezoelectric ceramic is:

[0039] Pb 0.927 Sr 0.073 (Mg 1 / 3 Nb 2 / 3 ) 0.2 Zr 0.4 Ti 0.4 o 3 +0.4%CeO 2 +0.3%PbO+0.3%CuO+0.2%Nb 2 o 5 ;

[0040] A preparation method of high-performance piezoelectric ceramics, comprising the following steps:

[0041] 1) with Pb 3 o 4 , MgO, Nb 2 o 5 As raw material, according to Pb (Mg 1 / 3 Nb 2 / 3 )O 3 Mix the ratio evenly, and synthesize Pb(Mg 1 / 3 Nb 2 / 3 )O 3 ;

[0042] 2) with Pb(Mg 1 / 3 Nb 2 / 3 )O 3 , SrCO 3 、TiO 2 , ZrO 2 , Nb 2 o 5 , CeO 2 , PbO, CuO as raw materials, according to Pb 0.927 Sr 0.073 (Mg 1 / 3 Nb 2 / 3 ) 0.2 Zr 0.4 Ti 0.4 o 3 +0.4%CeO 2 +0.3%PbO+0.3%CuO+0.2%Nb 2 o 5 Mix the ratio evenly, and obtain Pb after incubating at 900°C for 3 hours 0.927 Sr 0.073 (Mg 1 / 3 Nb 2 / 3 ) 0.2 Zr 0.4 Ti 0.4 o 3 +0.4%CeO 2 +0.3%PbO+0.3%CuO+0.2%Nb 2 o 5 mixed powder;

[0043] 3) Will

[0044] Pb 0.927 Sr 0.073 (Mg 1 / 3 Nb 2 / 3 ) 0.2 Zr 0...

Embodiment 3

[0047] The general chemical formula of the high-performance piezoelectric ceramic is:

[0048] Pb 0.942 Sr 0.058 (Mg 1 / 3 Nb 2 / 3 ) 0.3 Zr 0.25 Ti 0.45 o 3 +0.6%CeO 2 +0.23%PbO+0.2%CuO+0.1%Nb 2 o 5 ;

[0049] A preparation method of high-performance piezoelectric ceramics, comprising the following steps:

[0050] 1) with Pb 3 o 4 , MgO, Nb 2 o5 As raw material, according to Pb (Mg 1 / 3 Nb 2 / 3 )O 3 Mix the ratio evenly, and synthesize Pb(Mg 1 / 3 Nb 2 / 3 )O 3 ;

[0051] 2) with Pb(Mg 1 / 3 Nb 2 / 3 )O 3 , SrCO 3 、TiO 2 , ZrO 2 , Nb 2 o 5 , CeO 2 , PbO, CuO as raw materials, according to Pb 0.942 Sr 0.058 (Mg 1 / 3 Nb 2 / 3 ) 0.3 Zr 0.25 Ti 0.45 o 3 +0.6%CeO 2 +0.23%PbO+0.2%CuO+0.1%Nb 2 o 5 Mix the ratio evenly, and obtain Pb after incubating at 900°C for 3 hours 0.942 Sr 0.058 (Mg 1 / 3 Nb 2 / 3 ) 0.3 Zr 0.25 Ti 0.45 o 3 +0.6%CeO 2 +0.23%PbO+0.2%CuO+0.1%Nb 2 o 5 mixed powder;

[0052] 3) Pb 0.942 Sr 0.058 (Mg 1 / 3 Nb 2 / 3 ) 0.3 Zr 0.25 Ti ...

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Abstract

The invention discloses a high-performance piezoelectric ceramic and a preparation method thereof. The chemical general formula is Pb<n>Sr<m>(Mg<1 / 3>Nb<2 / 3>) Zr<y>Ti<x>O<3>+g%CeO<2>+h%PbO+b%CuO+d%Nb<2>O<5>, in the formula, 0.927 < = n < = 0.976, 0.024 < = m < = 0.073, 0.25 < = z < = 0.25, 0.35 < = y < = 0.35, 0.50 < = x < = 0.60, 0.4<=g<=0.7, 0.1<=h<=0.3, 0.1<=b<=0.3, 0.1<=d<=0.3. According to thepreparation method, Pb(Mg<1 / 3>Nb<2 / 3>)O<3> is synthesized, and adding into a PZT system is adopted to realize high intensity. The prepared product is high in density, high in power, high in efficiency, and high in quality. The piezoelectric ceramic is a modified hard PZT system piezoelectric ceramic, has high power bearing capacity and high comprehensive performance, can meet the requirements ofpeople, is extremely suitable for power type transducers with extremely high power and high driving requirements, and can be widely applied to sensors with extremely high power requirements such as high-power sound wave welding and fishery group detection.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric ceramics, and in particular relates to a high-performance piezoelectric ceramic and a preparation method thereof. Background technique [0002] Piezoelectric ceramic material is a material that converts electrical energy and mechanical energy. That is, applying a mechanical stress to the piezoelectric material will generate charges on its surface. Conversely, when an external electric field is applied to the piezoelectric material, the piezoelectric material will also produce mechanical deformation. Piezoelectric ceramics have a series of characteristics such as small size, high resolution, fast response, and large thrust, and have been widely used in the fields of sensors, actuators, transducers, non-destructive testing, and communication technology. [0003] With the advent of the era of mobile Internet, and with the emergence of the demand for miniaturization, ultra-thinness, high reliab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/493C04B41/88
CPCC04B35/493C04B41/88C04B41/009C04B41/5116C04B2235/3229C04B2235/3296C04B2235/3281C04B2235/3251C04B2235/77C04B2235/96C04B2235/3206C04B2235/44
Inventor 李茂洪
Owner 李茂洪
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