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Piezoelectric ceramic intelligent structure and method for embedding piezoelectric ceramic intelligent structure into metal matrix

A technology of piezoelectric ceramics and smart structures, applied in the manufacture/assembly of piezoelectric/electrostrictive devices, piezoelectric/electrostrictive devices, piezoelectric/electrostrictive/magnetostrictive devices, etc. Hysteresis and other problems, to achieve the effect of fast reaction speed, reducing gas content and inhibiting growth mode

Active Publication Date: 2020-05-08
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a certain hysteresis in this structure during actual use.

Method used

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  • Piezoelectric ceramic intelligent structure and method for embedding piezoelectric ceramic intelligent structure into metal matrix
  • Piezoelectric ceramic intelligent structure and method for embedding piezoelectric ceramic intelligent structure into metal matrix
  • Piezoelectric ceramic intelligent structure and method for embedding piezoelectric ceramic intelligent structure into metal matrix

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Embodiment 1

[0040] see Figure 1-3 , this embodiment provides a piezoelectric ceramic smart structure, including a piezoelectric ceramic spherical shell 12, the middle of the piezoelectric ceramic spherical shell 12 is provided with a spherical metal core 10 as an internal electrode, the piezoelectric ceramic The outer surface of the ceramic spherical shell 12 is provided with a metal plating layer 11 as an external electrode, and the piezoelectric ceramic spherical shell 12 is provided with a lead channel 13 for leading out internal electrodes. The outer surface of the piezoelectric ceramic spherical housing 12 is divided into electrodes to form an array of pressure sensors arranged equidistantly.

[0041] In this embodiment, the outer surface of the metal coating 11 can also be sprayed with a high-temperature-resistant insulating paint layer, using water-based inorganic heat-resistant materials, pure inorganic polymer high-temperature solutions, and pigments that are finished with high-...

Embodiment 2

[0048] see Figure 4-7 , the present embodiment provides a method for embedding a piezoelectric ceramic smart structure into a metal matrix, the steps of which include:

[0049] (1) The piezoelectric ceramic material is made into a clay-like mixture, and placed in a mold together with the spherical metal inner core 10 as an internal electrode, pressurized and sintered to form a piezoelectric ceramic spherical shell 12, and the piezoelectric ceramic spherical shell 12 is left with A lead wire channel 13 leading out the internal electrodes;

[0050] Specifically, after weighing by electronic balance according to the composition of the piezoelectric ceramic material, the raw materials are weighed, and the ingredients are mixed by ball milling; the ingredients are dried and ground for 24 hours; the powder is calcined at 1000°C for 3 hours, and then ground again for 48 hours The powder with uniform particles is obtained after screening, and an organic solvent is added to make a cl...

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Abstract

The invention provides a piezoelectric ceramic intelligent structure and a method for embedding the piezoelectric ceramic intelligent structure into a metal matrix. The piezoelectric ceramic intelligent structure provided by the invention comprises a piezoelectric ceramic spherical shell, wherein the middle of the piezoelectric ceramic spherical shell is provided with a spherical metal inner coreserving as an internal electrode, the outer surface of the piezoelectric ceramic spherical shell is provided with a metal coating serving as an external electrode, the outer surface of the piezoelectric ceramic spherical shell is subjected to electrode segmentation to form pressure sensor arrays arranged at equal intervals, and the piezoelectric ceramic spherical shell is internally provided witha lead channel used for leading out the internal electrode. According to the piezoelectric ceramic spherical array structure with the spherical metal inner core, piezoelectric ceramic has a high piezoelectric constant and Young modulus compared with piezoelectric fibers, and the reaction speed is high. The structure is uniform in spatial directivity, can focus and sense signals by 360 degrees, andcan be used as a signal receiver and a signal generator at the same time.

Description

technical field [0001] The invention belongs to the technical field of manufacturing an intelligent structure inside a metal, and relates to a piezoelectric ceramic intelligent structure and a method for embedding it into a metal matrix. Background technique [0002] The intelligent material structure is a composite assembly of controllers, drivers and sensors, which has the ability to perceive changes in external or internal state and performance and identify the cause of the changes according to the specific characteristics of the changes, so as to adopt optimal or near-optimal control strategies A class of structures that self-detects and self-heals in response to a reasonable response. [0003] With the development of science and technology, higher requirements are put forward for the performance of materials in high-tech fields such as aerospace and atomic energy. Smart materials have become a hot topic in future research, and the development and application prospects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/047H01L41/08H01L41/187H01L41/29H01L41/43C04B35/475C04B35/622H10N30/87H10N30/00H10N30/06H10N30/097H10N30/853
CPCC04B35/475C04B35/622C04B2235/3213C04B2235/3229C04B2235/3251C04B2235/656C04B2235/6567H10N30/87H10N30/8561H10N30/06H10N30/097H10N30/101Y02P40/60
Inventor 吴立群杨梦露刘宽陈增
Owner HANGZHOU DIANZI UNIV
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