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High temperature and high sensitivity piezoelectric ceramic material and preparation method thereof

A high-sensitivity, piezoelectric ceramic technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve the problem of low sensitivity of piezoelectric transducers, lack of piezoelectric ceramic materials, and poor performance. Stability and other issues, to achieve the effect of high operating temperature, excellent comprehensive performance and good stability

Active Publication Date: 2009-06-17
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, although a few units in China have also actively explored monopole receiving piezoelectric transducers, the piezoelectric transducers developed so far still have low sensitivity, low resolution, and low Outstanding problems such as unstable performance at high temperatures cannot really meet the requirements of underground exploration. The key is the lack of piezoelectric ceramic materials that can work stably for a long time under high temperature and high pressure environments. Therefore, the research and development of high temperature and high sensitivity piezoelectric ceramic materials It has become an important technical bottleneck encountered in the development of a new generation of multipole array acoustic logging tools

Method used

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  • High temperature and high sensitivity piezoelectric ceramic material and preparation method thereof
  • High temperature and high sensitivity piezoelectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] with Pb 3 o 4 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), SrCO 3 (industrial pure), Nb 2 o 5 (industrial pure), La 2 o 3 (chemically pure), Cr 2 o 3 (chemically pure), SiO 2 (chemically pure) as raw material, according to 0.53PbZrO 3 +0.38PbTiO 3 +0.01PbNbO 3 +0.05SrTiO 3 +0.03LaTiO 3 +0.05wt.% SiO 2 +0.04wt.%Cr 2 o 3 +0.03wt.%Nb 2 o 5 Stoichiometric weighing, with deionized water and agate balls as the medium, after barrel milling for 8 hours, after discharging and drying, perform the first stage of briquette synthesis at 650°C / 2h, and then carry out the second stage at 850°C / 2h Synthesis, after crushing, barrel milling for 24 hours, discharge drying, adding binder, molding (molding pressure is 150MPa), plastic discharge (800°C / 1h), sintering (1300°C / 2), cold processing, ultrasonic cleaning, Oxidation treatment, upper electrode, polarization (180°C, 3.5kv / mm, 30min), aging treatment (200°C / 2h) and other processes, and finall...

Embodiment 2

[0016] with Pb 3 o 4 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), SrCO 3 (industrial pure), Nb 2 o 5 (industrial pure), La 2 o 3 (chemically pure), Cr 2 o 3 (chemically pure), SiO 2 (chemically pure) is raw material, and preparation technology is with embodiment 1, according to 0.53PbZrO 3 +0.40PbTiO 3 +0.01PbNbO 3 +0.03SrTiO 3 +0.03LaTiO 3 +0.04wt.%SiO 2 +0.05wt.%Cr 2 o 3 +0.04wt.% La 2 o 3 chemical formulations for preparation. The main properties of the obtained material standard sheet are: d 33 =492pC / N, ε 33 T / ε o =1824, g 33 =30.5, tgδ=1.7, Kp=0.615, Qm=63, Tc=348°C, ρ v (200°C)=4.7×10 8 Ω cm;

Embodiment 3

[0018] with Pb 3 o 4 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), SrCO 3 (industrial pure), Nb 2 o 5 (industrial pure), La 2 o 3 (chemically pure), SiO 2(chemically pure) is raw material, and preparation technology is with embodiment 1, according to 0.53PbZrO 3 +0.425PbTiO 3 +0.005PbNbO 3 +0.01SrTiO 3 +0.03LaTiO 3 +0.05wt.% SiO 2 +0.04wt.%Nb 2 o 5 +0.05wt.%La 2 o 3 chemical formulations for preparation. The main properties of material standard sheets are: d 33 =500pC / N, ε 33 T / ε o =1800, g 33 =31.4, tgδ=1.5, Kp=0.62, Qm=60, Tc=352°C, ρ v (200°C)=7.8×10 8 Ω cm;

[0019] Table 1 The present invention compares with prior art

[0020]

[0021]

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Abstract

The invention relates to a high-temperature high-sensitivity piezoceramic material and a preparation method thereof, which belongs to the field of ceramic composition and preparation. A constitution formula of the high-temperature high-sensitivity piezoceramic material is xPbZrO3+yPbTiO3+zPbNbO3+mSrTiO3+nLaTiO3+awt.percentSiO2+bwt.percentCr2O3+cwt.percentNb2O5+dwt.percentLa2O3, wherein the x is between 0.4 and 0.6; the y is between 0.4 and 0.5; the z is between 0.001 and 0.05; the m is between 0.0 and 0.05; the n is between 0.01 and 0.05; x+y+z+m+n is equal to 1; the a is between 0 and 0.5; the b is between 0 and 0.5; the c is between 0 and 0.5; and the d is between 0 and 0.5. The material is modified and prepared based on the prior piezoceramic process, and main performances of the material comprise: d33 is equal to 500pC / N, epsilon33T / epsilono is equal to 1,800, g33 is equal to 31.4, tg delta is equal to 1.5, Kp is equal to 0.62, Qm is equal to 60, Tc is equal to 352 DEG C, and rhov(200 DEG C) is equal to 7.8*10<8>omega.cm. The material has the characteristics of high service temperature (high up to 200 DEG C), high sensitivity (g33 is equal to 31.4), strong signal receiving, and good stability.

Description

technical field [0001] The invention relates to a high-temperature and high-sensitivity piezoelectric ceramic material and a preparation method thereof, belonging to the field of ceramic composition and preparation. Background technique [0002] The magnitude of vibration reflects the operating status of objects and equipment, and the detection of vibration involves almost every engineering field. To detect vibration, a vibration measuring instrument is necessary, and a vibration sensor is indispensable. Piezoelectric acceleration sensors that can work normally at a certain temperature have been widely used in many important scientific research and industrial departments to monitor the system. [0003] In the field of petroleum logging, the new generation of multipole array acoustic logging instrument is the latest technology of acoustic logging, which can measure the wave velocity and various fluctuations of longitudinal wave, shear wave and Stoneley wave in fluid-filled w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/491C04B35/472C04B35/14C04B35/12C04B35/495C04B35/50C04B35/622H01L41/187H10N30/853
Inventor 李玉臣姚烈朱怀志董显林张仲猷
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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