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Method for preparing barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film

A technology of potassium sodium niobate and barium zirconate titanate is applied in the field of preparation of lead-free piezoelectric thick film, which can solve the problems of difficulty in preparing dense and good potassium sodium niobate ceramic body and the like

Inactive Publication Date: 2010-08-11
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, potassium-sodium niobate-based piezoelectric ceramics with a perovskite structure have attracted much attention because of their high piezoelectricity and high Curie temperature, but it is difficult to prepare dense pure ceramics by using traditional ceramic sintering processes. Potassium sodium niobate ceramic body

Method used

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  • Method for preparing barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film
  • Method for preparing barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film
  • Method for preparing barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1), according to BaZr 0.5 Ti 0.95 o 3 The stoichiometric ratio of barium acetate is dissolved in glacial acetic acid, stirred by constant magnetic force at 80°C for 30 minutes, and then naturally cooled to room temperature to obtain a barium acetate solution; tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 Dissolve in ethylene glycol methyl ether, stir magnetically at room temperature for 40 minutes, then add zirconium tetra-n-butoxide, stir magnetically at room temperature for 40 minutes to obtain a mixed solution, then add barium acetate solution, stir magnetically at 80°C for 1 hour, After cooling naturally to room temperature, a clear barium zirconate titanate precursor sol was finally obtained, and the concentration of the barium zirconate titanate was adjusted to 0.4 mol / L.

[0031] (2), according to K 0.5 Na 0.5 NbO 3 Potassium carbonate, sodium carbonate and niobium pentoxide were weighed respectively, mixed and ball-milled with absolute...

Embodiment 2

[0036] (1), according to BaZr 0.5 Ti 0.95 o 3 The stoichiometric ratio of barium acetate is dissolved in glacial acetic acid, stirred by constant temperature at 80°C for 30 minutes, and then naturally cooled to room temperature to obtain a barium acetate solution; tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 Dissolve in ethylene glycol methyl ether, stir magnetically at room temperature for 40 minutes, then add zirconium tetra-n-butoxide, stir magnetically at room temperature for 40 minutes to obtain a mixed solution, then add barium acetate solution, stir magnetically at 80°C for 1 hour, After cooling naturally to room temperature, a clear barium zirconate titanate precursor sol was finally obtained, and the concentration of the barium zirconate titanate was adjusted to 0.4 mol / L.

[0037] (2), according to K 0.5 Na 0.5 NbO 3 Potassium carbonate, sodium carbonate and niobium pentoxide were weighed respectively, mixed and ball-milled with absolute et...

Embodiment 3

[0042] (1), according to BaZr 0.5 Ti 0.95 o 3 The stoichiometric ratio of barium acetate is dissolved in glacial acetic acid, stirred by constant magnetic force at 80°C for 30 minutes, and then naturally cooled to room temperature to obtain a barium acetate solution; tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 Dissolve in ethylene glycol methyl ether, stir magnetically at room temperature for 40 minutes, then add zirconium tetra-n-butoxide, stir magnetically at room temperature for 40 minutes to obtain a mixed solution, then add barium acetate solution, stir magnetically at 80°C for 1 hour, After cooling naturally to room temperature, a clear barium zirconate titanate precursor sol was finally obtained, and the concentration of the barium zirconate titanate was adjusted to 0.4 mol / L.

[0043] (2), according to K 0.5 Na 0.5 NbO 3 Potassium carbonate, sodium carbonate and niobium pentoxide were weighed respectively, mixed and ball-milled with absolute...

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Abstract

The invention relates to a method for preparing a piezoelectric thick film in inorganic materials, and discloses a method for preparing a barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film. The method comprises the following steps: (1) preparing barium zirconate titanate precursor sol in the stoichiometric ratio of BaZr0.5Ti0.95O3; (2) respectively weighing potassium carbonate, sodium carbonate and niobium pentaoxide in the stoichiometric ratio of K0.5Na0.5NbO3, and preparing micro / nanometer grade potassium-sodium niobate through mixed ball milling, drying, tabletting, sintering, crushing and ball milling; (3) mixing the micro / nanometer grade potassium-sodium niobate with the barium zirconate titanate precursor sol to prepare stable mixed size, wherein the mass content of the potassium-sodium niobate is between 40 and 70 percent; and (4) repeating spinning process-heat treatment process to obtain the barium zirconate titanate and potassium-sodium niobate composite lead-free piezoelectric thick film.

Description

technical field [0001] The invention relates to a method for preparing a piezoelectric thick film in inorganic materials, in particular to a method for preparing a lead-free piezoelectric thick film compounded with barium zirconate titanate and potassium sodium niobate. Background technique [0002] In view of the harm to the environment and human health caused by lead-containing materials in the process of preparation, use and disposal, research on lead-free materials has gradually become the main research and development direction in the field of materials. At present, potassium-sodium niobate-based piezoelectric ceramics with a perovskite structure have attracted much attention because of their high piezoelectricity and high Curie temperature, but it is difficult to prepare dense pure ceramics by using traditional ceramic sintering processes. Potassium sodium niobate ceramic body. Barium zirconate titanate-based piezoelectric ceramics are considered as excellent substitu...

Claims

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Application Information

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IPC IPC(8): C04B35/49C04B35/495C04B35/622
Inventor 任巍纪红芬史鹏王玲艳闫兴伟姚姗姗陈晓峰吴小清姚熹
Owner XI AN JIAOTONG UNIV
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