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A piezoelectric ceramic fiber with metal cores

A technology of piezoelectric ceramics and metal cores, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc. Problems such as poor bonding with piezoelectric ceramic materials

Inactive Publication Date: 2008-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piezoelectric ceramic fiber with a metal core is obtained by extrusion or by impregnating, sputtering or plasma deposition on the metal core. The combination between the metal core and the piezoelectric ceramic material is not tight, resulting in metal Performance degradation or non-repeatability of the core piezoceramic fiber

Method used

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  • A piezoelectric ceramic fiber with metal cores
  • A piezoelectric ceramic fiber with metal cores

Examples

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Embodiment 1

[0023] As shown in Figure 1, the piezoelectric ceramic fiber containing a metal core in this embodiment includes a metal core 1, a piezoelectric ceramic material 2 covering the metal core 1, and a coating electrode 3 coated on the outer surface of the piezoelectric ceramic material 2 The cross-section of the metal core 1 is circular, and its diameter is 10 microns. The metal core 1 is made of a metal material with a high temperature resistance of 1000°C-3500°C and is not easily oxidized, such as platinum, or other high temperature resistant and not easily oxidized. made of metal materials such as gold or molybdenum or tungsten; the piezoelectric ceramic material 2 is a perovskite structure piezoelectric ceramic material, and the molecular formula of the perovskite structure piezoelectric ceramic material is Pb(Zr 0.35 Ti 0.65 )O 3 ;

Embodiment 2

[0025]As shown in Figure 1, the piezoelectric ceramic fiber containing a metal core in this embodiment includes a metal core 1, a piezoelectric ceramic material 2 covering the metal core 1, and a coating electrode 3 coated on the outer surface of the piezoelectric ceramic material 2 The cross-section of the metal core 1 is circular, and its diameter is 200 microns. The metal core 1 is made of a metal material that is resistant to high temperatures of 1000°C-3500°C and is not easily oxidized, such as gold, or other high temperature resistant and not easily oxidized. made of metal materials such as platinum or molybdenum or tungsten; the piezoelectric ceramic material 2 is a piezoelectric ceramic material with a perovskite structure, and the molecular formula of the piezoelectric ceramic material with a perovskite structure is Pb(Zr 0.65 Ti 0.35 )O 3 ;

Embodiment 3

[0027] As shown in Figure 1, the piezoelectric ceramic fiber containing a metal core in this embodiment includes a metal core 1, a piezoelectric ceramic material 2 covering the metal core 1, and a coating electrode 3 coated on the outer surface of the piezoelectric ceramic material 2 The cross-section of the metal core 1 is circular, and its diameter is 100 microns. The metal core 1 is made of a high temperature resistant 1000°C-3500°C and non-oxidizable metal material such as molybdenum, or other high temperature resistant and non-oxidizable metal materials. Metal materials such as platinum or gold or tungsten, etc.; piezoelectric ceramic material 2 is a piezoelectric ceramic material with a perovskite structure, and the molecular formula of the piezoelectric ceramic material with a perovskite structure is Pb(Zr 0.5 Ti 0.5 )O 3 ;

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Abstract

The invention relates to a piezoelectric ceramic fiber containing a metal core. The invention includes a metal core (1), a piezoelectric ceramic material (2) which coats the metal core (1) and a coating electrode (3) which is coated on the outer surface of the piezoelectric ceramic material (2); the value of the diameter (d) of the metal core (1) is more than or equal to 10 microns and is less than or equal to 200 microns; the metal core (1) is composed of metal materials which are high temperature resistant of 1000 DEG C to 3500 DEG C and are not easy to be oxidized; the piezoelectric ceramic material (2) is the piezoelectric ceramic material with a perovskite structure; the ceramic part and the metal core part of the piezoelectric ceramic fiber containing a metal core of the invention have good combination; wherein, the metal core can be used as an electrode, therefore, only the outer surface of the piezoelectric ceramic fiber needs to be plated with the electrode, and the single fiber can be used as a sensor or a driver; the invention has typical ferroelectricity and typical strain-electric field relation curve of the piezoelectric material, thus the invention can be taken as a driving element.

Description

1. Technical field [0001] The invention relates to a piezoelectric ceramic fiber, in particular to a piezoelectric ceramic fiber containing a metal core. 2. Background technology [0002] Most smart structures adopt the structural form of integrating functional devices and matrix structures. In order to facilitate integration with the structural matrix, this puts forward new requirements for the geometric shape and size of functional components in smart structures. Traditional piezoelectric functional devices are mostly in the form of blocks and sheets. Due to their large volume, they are not easy to integrate with the matrix structure. When embedded in the matrix structure, it will have a great impact on the strength and reliability of the structure, and will also change many properties of the structure. , and even affect the use of the structure and shorten the service life of the structure. Ideal geometries to meet the ease of integration requirements imposed by smart st...

Claims

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Application Information

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IPC IPC(8): H01L41/087H01L41/113B60C23/04
Inventor 裘进浩朱孔军季宏丽
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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