Wide component window and high transduction coefficient ceramic material for piezoelectric energy collection and preparation

A technology of piezoelectric energy and piezoelectric ceramics, applied in the field of piezoelectric ceramic materials, can solve problems such as hindering the improvement of the conversion coefficient, increasing the difficulty of production technology, ensuring high conversion coefficient, etc., achieving good technology and industrial application prospects, design The method is novel and the effect of improving the conversion coefficient

Active Publication Date: 2018-11-02
昆山昱翌辉华电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the piezoelectric charge constant and the relative permittivity often show a trend of simultaneous increase or decrease near the MPB. According to the above formula (1-1), this synergistic change seriously hinders the improvement of the conversion coefficient
[0010] Furthermore, the high conversion coefficient of piezoelectric materials in the current research is often obtained at a specific c

Method used

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  • Wide component window and high transduction coefficient ceramic material for piezoelectric energy collection and preparation
  • Wide component window and high transduction coefficient ceramic material for piezoelectric energy collection and preparation
  • Wide component window and high transduction coefficient ceramic material for piezoelectric energy collection and preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0043] First according to the chemical formula of the matrix (Abbreviation 0.2PZN-0.8PZT) weigh Nb 2 o 5 , Pb 3 o 4 , ZrO 2 、TiO 2 and ZnO, and ball milled in ethanol for 12 hours. The mixture was dried and calcined at 850° C. for 2 hours, ball milled in ethanol and dried again to obtain 0.2PZN-0.8PZT powder. Then weigh 0.2PZN-0.8PZT powder, mix according to the ratio of 10g powder and 1.3mL binder, press the molded product at 100MPa, remove the binder at 560°C, and sinter at 1000°C for 2 hours to obtain Pure 0.2PZN-0.8PZT ceramics.

Embodiment 2

[0045] First according to the chemical formula of the matrix (Abbreviation 0.2PZN-0.8PZT) weigh Nb 2 o 5 , Pb 3 o 4 , ZrO 2 、TiO 2 and ZnO, and ball milled in ethanol for 12 hours. After the mixture was dried, it was calcined at 850°C for 2 hours, ball milled and dried in ethanol again, and the product was pre-calcined at 1000°C for 2 hours, and then ball milled and dried in ethanol again to obtain 0.2PZN- 0.8PZT matrix powder. Then according to the nominal composition of 0.2PZN-0.8PZT+0.50mol.% AlN, weigh 0.2PZN-0.8PZT and AlN respectively, and ball mill in ethanol for 12 hours. After the mixture is dried, the ratio of 10g powder to 1.3mL binder Mix and press the molding at 100MPa, remove the binder at 560°C, and sinter at 1150°C for 2 hours to obtain PZNZT / ZnAl 2 o 4 Composite ceramics.

Embodiment 3

[0047] According to the nominal composition of 0.2PZN-0.8PZT+1.00mol.% AlN, weigh 0.2PZN-0.8PZT and AlN. Others are with embodiment 2.

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Abstract

The invention discloses a wide component window and high transduction coefficient ceramic material for piezoelectric energy collection and preparation and belongs to the field of piezoelectric ceramicmaterials. The material has a chemical formula of 0.2Pb(Zn1/2Nb2/3)O3-0.8Pb(Zr1/2Ti1/2)O3 (abbreviated as 0.2PZN-0.8PZT), AlN with a mole fraction x of mol.% is doped, and x is 0.00-6.00. The preparation comprises the following steps: preparing 0.2PZN-0.8PZT, further adding AlN, and carrying out steps of wet milling, drying, pelletizing, pressing molding and sintering. By adopting the material, relative change trend of piezoelectric charge constants and dielectric constants is effectively regulated and controlled, energy increase coefficients are increased, component windows of high transduction coefficients are greatly widened, dependency of optimal properties upon specific single components is relieved, and great promotion functions can be achieved for further improving electro-mechanical transformation properties and industrial application of piezoelectric energy collection devices.

Description

technical field [0001] The invention belongs to the field of piezoelectric ceramic materials, and in particular relates to a composite ceramic material for piezoelectric energy collection with a wide component window and a high conversion coefficient and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of civilian and military Internet of Things technology, the core device that constitutes the network node - the miniature wireless sensor is playing an increasingly important role in it. However, how to realize the self-power supply of miniature sensors to effectively solve the difficulty of secondary battery replacement in complex power supply wiring of existing sensors or in special extreme environments, so that they can serve for a long time without failure, has attracted the attention of countries all over the world. Since solar energy, wind energy and other new energy sources are too heavily dependent on the environme...

Claims

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Application Information

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IPC IPC(8): C04B35/493C04B35/622
CPCC04B35/493C04B35/622C04B2235/3255C04B2235/3284C04B2235/3296C04B2235/3865
Inventor 侯育冬于肖乐周爱琳赵海燕郑木鹏朱满康
Owner 昆山昱翌辉华电子科技有限公司
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