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Barium-calcium-zirconium-titanium leadless piezoelectric textured thick film and preparation method of thick film

A lead-free piezoelectric, zirconium-titanium technology is applied in the field of lead-free piezoelectric textured thick film and lead-free piezoelectric textured thick film texture, achieving the effects of good orientation degree, high orientation degree and low preparation cost

Inactive Publication Date: 2012-07-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the texturing of piezoelectric materials is mainly concentrated on bulk materials, thick films are mainly concentrated on PZT-based materials, and research on lead-free piezoelectric thick films is less, while for (Ba, Ca) (Zr, Ti)O 3 Textured lead-free piezoelectric thick film has not been reported

Method used

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  • Barium-calcium-zirconium-titanium leadless piezoelectric textured thick film and preparation method of thick film
  • Barium-calcium-zirconium-titanium leadless piezoelectric textured thick film and preparation method of thick film
  • Barium-calcium-zirconium-titanium leadless piezoelectric textured thick film and preparation method of thick film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (Ba 0.8425 Ca 0.1575 )(Zr 0.105 Ti 0.895 )O 3 Preparation of base material: using BaCO 3 , CaCO 3 , ZrO 2 and TiO 2 As raw material, according to (Ba 0.8425 Ca 0.1575 )(Zr 0.105 Ti 0.895 )O 3 The stoichiometric ratio of Ba, Ca, Zr and Ti elements in the base material is obtained by a solid phase reaction method. During preparation, the raw material mixture is prepared through the steps of pre-pressing and heat treatment in sequence, wherein the process condition of pre-pressing is 2MPa constant pressure for 1 minute, and the temperature of heat treatment is 1300°C for 4 hours.

[0034] Weigh 0.5g barium titanate template and 9.5g (Ba 0.8425 Ca 0.1575 )(Zr 0.105 Ti 0.895 )O 3 Base material is placed in mortar, adds dehydrated alcohol 25ml and grinds for 3 hours, adds the binding agent that prepares and continues grinding for 1 hour, and described binding agent is the mixed solution of terpineol and ethyl cellulose, and its two The weight ratio is 10:1. ...

Embodiment 2

[0037] (Ba 0.82 Ca 0.18 )(Zr 0.12 Ti 0.88 )O 3 Preparation of base material: using BaCO 3 , CaCO 3 , ZrO 2 and TiO 2 As raw material, according to (Ba 0.82 Ca 0.18 )(Zr 0.12 Ti 0.88 )O 3 The stoichiometric ratio of Ba, Ca, Zr and Ti elements in the base material is obtained by a solid phase reaction method. During preparation, the raw material mixture is prepared through the steps of pre-pressing and heat treatment in sequence, wherein the process condition of pre-pressing is 2MPa constant pressure for 1 minute, and the temperature of heat treatment is 1300°C for 4 hours.

[0038] Weigh 2g barium titanate template and 8g (Ba 0.82 Ca 0.18 )(Zr 0.12 Ti 0.88 )O 3 Base material is placed in mortar, adds dehydrated alcohol 25ml and grinds for 3 hours, adds the binding agent that prepares and continues grinding for 1 hour, and described binding agent is the mixed solution of terpineol and ethyl cellulose, and its two The weight ratio is 10:1.2. Take out the prepar...

Embodiment 3

[0041] (Ba 0.805 Ca 0.195 )(Zr 0.13 Ti 0.87 )O 3 Preparation of base material: using BaCO 3 , CaCO 3 , ZrO 2 and TiO 2 As raw material, according to (Ba 0.805 Ca 0.195 )(Zr 0.13 Ti 0.87 )O 3 The stoichiometric ratio of Ba, Ca, Zr and Ti elements in the base material is obtained by a solid phase reaction method. During preparation, the raw material mixture is prepared through the steps of pre-pressing and heat treatment in sequence, wherein the process condition of pre-pressing is 2MPa constant pressure for 1 minute, and the temperature of heat treatment is 1300°C for 4 hours.

[0042] Weigh 3g barium titanate template and 7g (Ba 0.805 Ca 0.195 )(Zr 0.13 Ti 0.87 )O 3 Base material is placed in mortar, adds dehydrated alcohol 25ml and grinds for 3 hours, adds the binding agent that prepares and continues grinding for 1 hour, and described binding agent is the mixed solution of terpineol and ethyl cellulose, and its two The weight ratio is 10:1.5. Take out the ...

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Abstract

The invention belongs to the field of leadless piezoelectric materials and relates to a leadless piezoelectric textured thick film and a preparation method of the thick film. The chemical components of the leadless piezoelectric textured thick film comply with a chemical formula of (BaxCay)(ZrzTim)O3; and in the chemical formula, x is not less than 0.79 and not more than 0.865, y is not less than 0.135 and not more than 0.21, z is not less than 0.06 and not more than 0.11, and m is not less than 0.89 and not more than 0.94. The preparation method of the thick film comprises the following steps of: (1) preparing corresponding basis material and template; and (2) placing the template and the basis material into a mortar according to a certain proportion, adding a solvent and a bonder, and grinding to prepare a slurry; screen-printing the slurry to obtain a film sheet; carrying out isostatic pressing on the obtained film sheet; and taking out a pressed sample, and carrying out heat treatment on the pressed sample to obtain the leadless piezoelectric textured thick film with good orientation. The leadless piezoelectric textured thick film prepared by the preparation method has higher orientation degree, can be widely applied to the aspects of a piezoelectric sensor, a piezoelectric motor and a high-precision displacement controller and the like, and is beneficial to the development of device miniaturization.

Description

technical field [0001] The invention belongs to the field of lead-free piezoelectric materials, and in particular relates to a lead-free piezoelectric texture thick film and a method for texturing the lead-free piezoelectric texture thick film. Background technique [0002] Piezoelectric materials are widely used in current electronic science and technology, including key technologies in aerospace technology, medical and industrial brakes, transducers, sensors, etc. At present, lead-based perovskite-type lead zirconate titanate (PZT)-based piezoelectric materials are widely used. As we all know, lead-based materials will cause serious harm to human beings and the environment in the process of preparation, use and disposal. Therefore, the research and development of environmentally friendly lead-free piezoelectric materials is an urgent task with important practical significance. [0003] There are four main types of lead-free piezoelectric systems currently reported: BaTiO ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/622
Inventor 翟继卫白王峰沈波
Owner TONGJI UNIV
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