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Piezoceramic material and preparation method thereof

A technology of piezoelectric ceramics and raw materials, applied in the field of piezoelectric ceramics materials and their preparation, can solve the problems of low dielectric constant, high mechanical quality factor and electromechanical coupling coefficient, and achieve the effect of low dielectric constant

Active Publication Date: 2014-05-07
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

[0004] The present invention aims at the technical problem that piezoelectric ceramic materials in the prior art cannot have both high mechanical quality factor and electromechanical coupling coefficient when they have low dielectric constant and small dielectric loss, and the purpose is to provide a A New Piezoelectric Ceramic Material

Method used

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  • Piezoceramic material and preparation method thereof
  • Piezoceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Pb 0.93 Sr 0.02 Ba 0.05 (Sb 1 / 2 Nb 1 / 2 ) 0.01 (Mn 1 / 3 Sb 2 / 3 ) 0.02 (Zr 0.545 Ti 0.455 ) 0.97 o 3 +0.02wt.%Fe 2 o 3 +0.1wt.%Sm 2 o 3 +0.06wt.%MnO 2 +0.01wt.%Al 2 o 3 piezoelectric ceramic material

[0027] First weigh Pb according to the stoichiometric ratio 3 o 4 , ZrO 2 、TiO 2 , SrCO 3 、BaCO 3 , MnCO 3 、Sm 2 o 3 , Sb 2 o 3 , Fe 2 o 3 , Nb 2 o 5 and Al 2 o 3 The raw material powder was barrel-milled for 6 hours by a wet ball milling process to obtain a ball mill mixture, wherein the mass ratio of raw material powder:steel ball:deionized water was 1:1.5:0.8. After the ball mill mixture was dried, it was briquetted, then synthesized at 650°C for 2 hours, and then heated to 850°C for 2 hours. After pulverizing, use the wet ball milling process to finely grind the barrel for 24 hours, wherein the mass ratio of raw material powder: steel balls: deionized water is 1:2:0.6, and after drying, add 6wt% of the raw material powder by weight Th...

Embodiment 2

[0029] Pb 0.93 Sr 0.02 Ba 0.05 (Sb 1 / 2 Nb 1 / 2 ) 0.005 (Mn 1 / 3 Sb 2 / 3 ) 0.015 (Zr 0.545 Ti 0.455 ) 0.98 o 3 +0.02wt.%Fe 2 o 3 +0.1wt.%Sm 2 o 3 +0.06wt.%MnO 2 +0.01wt.%Al 2 o 3 piezoelectric ceramic material

[0030] Weigh according to stoichiometric ratio, preparation process is the same as embodiment 1.

Embodiment 3

[0032] Pb 0.93 Sr 0.02 Ba 0.05 (Sb 1 / 2 Nb 1 / 2 ) 0.01 (Mn 1 / 3 Sb 2 / 3 ) 0.02 (Zr 0.545 Ti 0.455 ) 0.97 o 3 +0.02wt.%Fe 2 o 3 +0.1wt.%Sm 2 o 3 +0.05wt.%MnO 2 +0.01wt.%Al 2 o 3 piezoelectric ceramic material

[0033] Weigh according to stoichiometric ratio, preparation process is the same as embodiment 1.

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Abstract

The invention discloses a piezoceramic material and a preparation method thereof. The piezoceramic material has the chemical general formula of Pb1-xMx(Sb1 / 2Nb1 / 2)y(Mn1 / 3Sb2 / 3)z(ZreTif)1-y-zO3+awt.%Fe2O3+bwt.%Sm2O3+cwt.%MnO2+dwt.%Al2O3, wherein M is Sr<2+> and / or Ba<2+>, x=0.02-0.1, y=0.01-0.1, z=0.01-0.1, e=0.40-0.60, f=0.40-0.60, f meets the condition that e+f=1, a=0-0.4, b=0-0.5, c=0-1.0, d=0-1.0, and the content of at most one of dopants in the four dopants including Fe2O3, Sm2O3, MnO2 and Al2O3 is equal to 0. The piezoceramic material disclosed by the invention has the main performances as follows: d33=210Pc / N, epsilon33T / epsilon0=585, tan delta=0.20%, kp=0.56, kt=0.54, and Qm=1210. Compared with a common power transmitted piezoceramic material, the piezoceramic material disclosed by the invention is lower in dielectric constant, smaller in dielectric loss and higher in mechanical quality factor and electromechanical coupling coefficient and is a power transmitted piezoceramic material with favorable performance, low dielectric constant and high mechanical quality factor.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a piezoelectric ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of modern science and technology, the research on piezoelectric ceramic materials has become more and more in-depth, and their applications have become more and more extensive. In recent years, the application of piezoelectric ceramic materials in medicine has also continued to expand. From medical detection, diagnosis to treatment, piezoelectric ceramics have played an important role as the core component of the system. Among them, the Sonic Accelerated Fracture Healing System (Sonic Accelerated Fracture Healing System) is a bone healing rehabilitation device developed in recent years. It is indicated for the non-implantative treatment of nonunions other than those of the skull and spine, and for newly formed closed posterior distal tip fract...

Claims

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Application Information

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IPC IPC(8): C04B35/493C04B35/622
Inventor 李玉臣董显林姚烈
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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