A-position co-substituted piezoelectric ceramic material with high piezoelectric constant and preparation method

A piezoelectric ceramic and high-voltage technology, which is applied in the field of piezoelectric ceramics and its preparation technology, can solve the problems of inability to meet high-performance material indicators, low piezoelectric constant indicators, etc., and achieve product consistency and process repeatability. High operability and improved piezoelectric constant

Inactive Publication Date: 2014-04-16
重庆胜普昂凯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also reports at home and abroad that the main component is niobium zinc niobium nickel lead zirconate lead zirconate titanate piezoelectric ceramic material, but the piezoelectric constant index is not high, which cannot meet the requirements of high performance material index

Method used

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  • A-position co-substituted piezoelectric ceramic material with high piezoelectric constant and preparation method
  • A-position co-substituted piezoelectric ceramic material with high piezoelectric constant and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] with Pb 3 o 4 (industrial pure), BaCO 3 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), Nb 2 o 5 (analytical pure), La 2 o 3 (analytical pure), Al 2 o 3 (chemically pure) as raw material, according to the composition of the material into Pb 0.92 Ba 0.04 La 0.04 (Ni 1 / 3 Nb 2 / 3 ) 0.12 (Zn 1 / 3 Nb 2 / 3 ) 0.12 Zr 0.39 Ti 0.37 o 3 +0.1wt%Al 2 o 3 The stoichiometry of the ingredients is weighed.

[0020]Agate balls and deionized water are used as the medium for mixing materials. According to the ratio of material: balls: water = 1: 1.5: 1.2, the weighed raw materials are mixed in a planetary ball mill for 4 hours, and then the materials are sieved to separate the agate balls. , and then fully dried in an oven at 120°C.

[0021] Put the dried raw materials into the crucible, cover the lid to prevent the volatilization of PbO, and pre-fire them at a temperature of 900 ° C ~ 920 ° C for 3 hours, crush the pre-fired blocks, and pass thro...

Embodiment 2

[0027] with Pb 3 o 4 (industrial pure), BaCO 3 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), Nb 2 o 5 (analytical pure), La 2 o 3 (analytical pure), Al 2 o 3 (chemically pure), Sb 2 o 3 (chemically pure) as the raw material, according to the material composition Pb 0.90 Ba 0.06 La 0.04 (Ni 1 / 3 Nb 2 / 3 ) 0.12 (Zn 1 / 3 Nb 2 / 3 ) 0.12 Zr 0.395 Ti 0.365 o 3 +0.1wt%Al 2 o 3 +0.3wt%Sb 2 o 3 The stoichiometry of the ingredients is weighed.

[0028] Agate balls and deionized water are used as the medium for mixing materials. According to the ratio of material: balls: water = 1: 1.5: 1.2, the weighed raw materials are mixed in a planetary ball mill for 4 hours, and then the materials are sieved to separate the agate balls. , and then fully dried in an oven at 120°C.

[0029] Put the dried raw materials into the crucible, cover the lid to prevent the volatilization of PbO, and pre-fire them at a temperature of 920 ° C ~ 950 ° C for 3 hours...

Embodiment 3

[0035] with Pb 3 o 4 (industrial pure), BaCO 3 (industrial pure), ZrO 2 (industrial pure), TiO 2 (industrial pure), Nb 2 o 5 (analytical pure), La 2 o 3 (analytical pure), Al 2 o 3 (chemically pure), Sb 2 o 3 (chemically pure), Fe 2 o 3 (analytical pure), Bi 2 o 3 (analytical pure) as the raw material, according to the composition of the material as Pb 0.88 Ba 0.06 La 0.06 (Ni 1 / 3 Nb 2 / 3 ) 0.12 (Zn 1 / 3 Nb 2 / 3 ) 0.12 Zr 0.40 Ti 0.36 o 3 +0.15wt%Al 2 o 3 +0.35wt%Sb 2 o 3 +0.35wt%Fe 2 o 3 +0.5wt% Bi 2 o 3 The stoichiometry of the ingredients is weighed.

[0036] Agate balls and deionized water are used as the medium for mixing materials. According to the ratio of material: balls: water = 1: 1.5: 1.2, the weighed raw materials are mixed in a planetary ball mill for 4 hours, and then the materials are sieved to separate the agate balls. , and then fully dried in an oven at 120°C.

[0037] Put the dried raw materials into the crucible, cover the l...

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Abstract

The invention provides an A-position co-substituted piezoelectric ceramic material with a high piezoelectric constant. The material is characterized in that the composition is Pb1-e-f-BaeLaf(Ni1 / 3Nb2 / 3)x(Zn1 / 3Nb2 / 3)yZrmTinO3+awt%Al2O3+bwt%Sb2O3+cwt%Fe2O3+dwt%Bi2O3, wherein (e+f) is more than or equal to 0.04 and less than or equal to 0.2; (x+y) is more than or equal to 0.05 and less than or equal to 0.3; (x+y+m+n)=1; a=0-0.5; b=0-0.5; c=0-0.5; d=0-0.5. A preparation method of the piezoelectric ceramic material comprises burdening, mixing, pre-sintering for synthesizing, smashing, finely grinding, molding, discharging glue, sintering and loading onto an electrode for polarizing. By means of A-position co-substituting and proper doping, the piezoelectric constant can be increased greatly. The A-position co-substituted piezoelectric ceramic material has the characteristics of high relative dielectric constant epsilonT33 / epsilon0 and high piezoelectric constants d33 and d31, the electromechanical coupling coefficient Kp is 0.6-0.75, and the mechanical quality factor Qm is less than 50. The material can be applied to a plurality of piezoelectric sensors and actuators.

Description

technical field [0001] The invention relates to the field of piezoelectric ceramics and its preparation technology, in particular to a piezoelectric ceramic material and a preparation method thereof in which an A-site composite replaces a piezoelectric constant. Background technique [0002] With the development of science and technology, piezoelectric ceramics have been widely used in daily consumption, automobile industry, communication equipment, medical equipment, industrial machinery, instrumentation, optics and optoelectronics, new energy, intelligent precision machinery and other fields. In recent years, especially as sensors The application of devices and actuators in these fields is growing rapidly, and the demand for high-performance piezoelectric ceramic materials is also greater, especially for ceramic materials with high piezoelectric constants. These materials are used in various high-sensitivity devices. Transmitters and receivers (such as transducers for high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/491C04B35/622
Inventor 蹇胜勇冯小东
Owner 重庆胜普昂凯科技有限公司
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