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(Ba<x>Ca<1-x>)(Ti<y>M<1-y>)O3 system piezoelectric ceramic material and preparation method thereof

A technology of piezoelectric ceramics and ceramic materials, applied in the field of piezoelectric ceramic materials, can solve problems affecting material properties, difficulty in mixing, and affecting the chemical and structural uniformity of ceramic materials

Active Publication Date: 2015-07-08
南通双辉医疗器械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method also has many unavoidable disadvantages: (1) it is difficult to mix the components in the raw materials to an ideal uniform state; (2) the calcination temperature is high; Sintered body with metering ratio; (4) It is easy to be mixed in the whole process, and powder with high purity cannot be obtained, which will eventually affect the performance of the material
However, due to the different solubility of different metal salts in the solution, it will affect the chemical and structural uniformity of ceramic materials to a certain extent, and it is difficult to completely avoid the occurrence of side reactions.

Method used

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  • (Ba&lt;x&gt;Ca&lt;1-x&gt;)(Ti&lt;y&gt;M&lt;1-y&gt;)O3 system piezoelectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example provides a (Ba x Ca 1-x )(Ti y m 1-y )O 3 System piezoelectric ceramic material, its composition is represented by the following formula: (Ba 0.85 Ca 0.15 )(Ti 0.9 Zr 0.1 )O 3 , where M is Zr, the value of x is 0.85, and the value of y is 0.90.

[0032] In this example (Ba x Ca 1-x )(Ti y m 1-y )O 3 The preparation method of system piezoelectric ceramic material, see figure 1 ,Specific steps are as follows:

[0033] Step 1: Ba(CH) with analytical purity of more than 98% 3 COO) 2 , Ca(CH 3 COO) 2 、TiO 2 and ZrO 2 As a raw material, according to the general formula (Ba 0.85 Ca 0.15 )(Ti 0.9 Zr 0.1 )O 3 The stoichiometric ratio is accurately calculated and accurately weighed.

[0034] Step 2: the weighed Ba(CH 3 COO) 2 and Ca(CH 3 COO) 2 Prepare a clear solution in a beaker and then mix, stir to keep it clear; add TiO to the clear solution in turn 2 , ZrO 2 , Citric acid monohydrate.

[0035] Step 3: Place the mixed solution on...

Embodiment 2

[0057] This example provides a (Ba x Ca 1-x )(Ti y m 1-y )O 3 System piezoelectric ceramic material, its composition is represented by the following formula: (Ba 0.85 Ca 0.15 )(Ti 0.95 Zr 0.05 )O 3 , where M is Zr, the value of x is 0.85, and the value of y is 0.95.

[0058] In this example (Ba x Ca 1-x )(Ti y m 1-y )O 3 The preparation method of system piezoelectric ceramic material, see figure 1 ,Specific steps are as follows:

[0059] Step 1: Ba(CH) with analytical purity of more than 98% 3 COO) 2 , Ca(CH 3 COO) 2 、TiO 2 and ZrO 2 As a raw material, according to the general formula (Ba 0.85 Ca 0.15 )(Ti 0.95 Zr 0.05 )O 3 The stoichiometric ratio is accurately calculated and accurately weighed.

[0060] Step 2: the weighed Ba(CH 3 COO) 2 and Ca(CH 3 COO) 2 Prepare a clear solution in a beaker and then mix, stir to keep it clear; add TiO to the clear solution in turn 2 , ZrO 2 , Citric acid monohydrate.

[0061]Step 3: Place the mixed solution...

Embodiment 3

[0072] This example provides a (Ba x Ca 1-x )(Ti y m 1-y )O 3 System piezoelectric ceramic material, its composition is represented by the following formula: Ba(Ti 0.9 sn 0.1 )O 3 , where M is Sn, the value of x is 1, and the value of y is 0.9.

[0073] In this example (Ba x Ca 1-x )(Ti y m 1-y )O 3 The preparation method of system piezoelectric ceramic material, see figure 1 ,Specific steps are as follows:

[0074] Step 1: Ba(CH) with analytical purity of more than 98% 3 COO) 2 、TiO 2 and SnO 2 As a raw material, according to the general formula Ba(Ti 0.9 sn 0.1 )O 3 The stoichiometric ratio is accurately calculated and accurately weighed.

[0075] Step 2: the weighed Ba(CH 3 COO) 2 Prepare a clear solution in a beaker, and add TiO to the clear solution sequentially 2 , SnO 2 , Citric acid monohydrate.

[0076] Step 3: Place the mixed solution on a magnetic stirring table and heat and stir at a temperature of 80°C until the water is evaporated, then p...

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Abstract

The invention relates a (Ba<x>Ca<1-x>)(Ti<y>M<1-y>)O3 system piezoelectric ceramic material and a preparation method thereof. The piezoelectric ceramic material can be represented by the following general formula: (Ba<x>Ca<1-x>)(Ti<y>M<1-y>)O3, wherein M is one of Zr or Sn, 0<=x<=1 and 0<=y<=1. In the invention, a ceramic sample is prepared through a method of combination of liquid-phase mixing and solid-phase sintering. By means of the method, the raw materials can be mixed more uniformly. The prepared ceramic sample is more uniform in crystal grain size, is clear in crystal boundary and is uniform and compact in structure. The ceramic sample is better in piezoelectric performances and electrostrictive strain than those of a sample prepared through a conventional solid phase method.

Description

technical field [0001] Provide a (Ba x Ca 1-x )(Ti y m 1-y )O 3 The invention discloses a method for preparing a system piezoelectric ceramic material, belonging to the field of piezoelectric ceramic materials. Background technique [0002] Piezoelectric ceramics, as a modern and important high-tech functional material, have been used in various fields such as military and civil, especially in the fields of ultrasonic transducers, sensors, non-destructive testing and communication technology. In recent years, with the enhancement of human awareness of environmental protection and continuous concern for their own health, lead zirconate titanate piezoelectric ceramics, which are dominant, have been banned in Europe. It is believed that lead-containing piezoelectric ceramics will be banned worldwide in the near future. Therefore, it is urgent to find lead-free piezoelectric materials to replace traditional lead-based piezoelectric ceramic materials. [0003] At present, ...

Claims

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Application Information

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IPC IPC(8): C04B35/49C04B35/468C04B35/622
Inventor 易志国龙佩青王薄笑天
Owner 南通双辉医疗器械科技有限公司
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