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Sol-gel method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder

A sol-gel method and lead-free piezoelectric technology are applied in the field of preparation of lead-free piezoelectric ceramic nanopowders, which can solve the problems of wide particle size distribution range, uneven doping elements, and unstable performance of powders, and achieve Small powder particle size distribution range, uniform doping elements, and small particle size distribution range

Inactive Publication Date: 2012-05-09
HARBIN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of wide particle size distribution range, low purity, uneven doping elements, low activity and unstable performance of the powder produced by the traditional solid-state sintering method, and provides a gel method to prepare Zr(BiNa) BaTiO lead-free piezoelectric ceramic nanopowder

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  • Sol-gel method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder
  • Sol-gel method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder
  • Sol-gel method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder

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specific Embodiment approach 1

[0020] Specific embodiment one: the method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nanopowder by a sol-gel method in this embodiment is carried out according to the following steps:

[0021] 1. According to the chemical formula Zr x (Bi 0.5 Na 0.5 ) 0.94 Ba 0.06 Ti 1-x o 3 According to the molar ratio of x:0.47:0.47:0.06:1-x, Zr(NO 3 ) 4 ·5H 2 O, Bi(NO) with a purity of 99% 3 ) 3 ·5H 2 O, CH 3 COONa·3H 2 O, Ba(NO 3 ) 2 and C 16 h 36 o 4 Ti, where 0.05<x<0.2;

[0022] Two, the Zr(NO 3 ) 4 ·5H 2 O, Bi(NO 3 ) 3 ·5H 2 O and CH 3 COONa·3H 2 Dissolve O in glacial acetic acid, stir and mix evenly under the condition of 40℃~50℃, then add the C weighed in step 1 16 h 36 o 4 Ti, stir and mix evenly under the condition of 60℃~80℃, then add the Ba(NO 3 ) 2 , stir and mix evenly, and add ammonia water to adjust the pH to 8-9, and continue to stir for 28-32min to obtain a mixed solution, in which Zr(NO 3 ) 4 ·5H 2 The mass ratio of O and...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, x=0.05. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment is different from Embodiment 1 in that: in step 1, x=0.1. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a sol-gel method for preparing Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder, which relates to a method for preparing lead-free piezoelectric ceramic nano powder. The method solves the problems of wide grain diameter distribution range, low purity, uneven doped elements, low activity and instable performance of the powder prepared by the traditional solid-phasesintering method. The method comprises the following steps: 1, weighing raw materials; 2, preparing mixed solution; 3, preparing gel; and 4, drying and sintering the gel under the vacuum to obtain the Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder. The Zr(BiNa)BaTiO lead-free piezoelectric ceramic nano powder prepared by the method of the invention has the advantages of small grain diameter distribution range, high purity, even doped elements, high activity and stable performance.

Description

technical field [0001] The invention relates to a method for preparing lead-free piezoelectric ceramic nano powder. Background technique [0002] Barium titanate is the basic parent material of electronic ceramic components, known as the pillar of electronic ceramics. Because of its high dielectric constant, excellent ferroelectricity, piezoelectricity, withstand voltage and insulation properties, it is widely used in small and large capacity microcapacitors, electronic computer memory components, piezoelectric ceramics, etc. Especially for the application of piezoelectric ceramics, it is one of the preferred materials to realize lead-free piezoelectric ceramics and meet the requirements of green and environmentally friendly functional materials. wide, low purity, uneven doping elements, low activity, and unstable performance. Contents of the invention [0003] The present invention aims to solve the problems of wide particle size distribution range, low purity, uneven d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/49C04B35/624
Inventor 施云波冯侨华修德斌赵文杰何梦资荣鹏志
Owner HARBIN UNIV OF SCI & TECH