Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A piezoelectric ceramic material applied to underwater acoustic transducers and its preparation method

A technology of underwater acoustic transducers and piezoelectric ceramics, applied in the direction of material selection for piezoelectric devices or electrostrictive devices, device material selection, and manufacturing/assembly of piezoelectric/electrostrictive devices, etc., can solve Problems such as high-power underwater acoustic transducers cannot be widely used to achieve the effects of improving mechanical quality factor, reducing dielectric loss, and reducing ceramic sintering temperature

Inactive Publication Date: 2018-04-20
HUAZHONG UNIV OF SCI & TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the defects of the prior art, the purpose of the present invention is to solve the technical problems that existing high-power piezoelectric ceramic materials have shortcomings in piezoelectric performance or loss performance, and cannot be widely used in the fields of high-power underwater acoustic transducers and the like.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A piezoelectric ceramic material applied to underwater acoustic transducers and its preparation method
  • A piezoelectric ceramic material applied to underwater acoustic transducers and its preparation method
  • A piezoelectric ceramic material applied to underwater acoustic transducers and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the embodiment of the present invention, with general chemical formula: Pb 0.98 Sr 0.02 (Mn 1 / 3 Sb 2 / 3 ) 0.08 Zr 0.47 Ti 0.45 o 3 +xwt%CeO 2 +ywt%Yb 2 o 3 +zwt%BiFeO 3 Indicates the composition of the piezoelectric ceramic material, where Pb 0.98 Sr 0.02 (Mn 1 / 3 Sb 2 / 3 ) 0.08 Zr 0.47 Ti 0.45 o 3 Represents the matrix powder of ceramics, xwt% represents CeO 2 (Cerium oxide) accounts for the weight percentage of the matrix ceramic powder, ywt% means Yb 2 o 3 (Ytterbium oxide) accounts for the weight percentage of the base ceramic powder, zwt% means BiFeO 3 (bismuth fer...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
piezoelectric charge coefficientaaaaaaaaaa
piezoelectric charge coefficientaaaaaaaaaa
electromechanical coupling coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a piezoelectric ceramic material applied to an underwater acoustic transducer and a preparation method thereof. The general chemical formula of the piezoelectric ceramic material is expressed as follows: Pb0.98Sr0.02(Mn1 / 3Sb2 / 3)0.08Zr0. 47Ti0.45O3+xwt%CeO2+ywt%Yb2O3+zwt%BiFeO3; where Pb0.98Sr0.02(Mn1 / 3Sb2 / 3)0.08Zr0.47Ti0.45O3 is the matrix ceramic powder, and xwt% means that CeO2 occupies the matrix The weight percentage of the ceramic powder, ywt% means that Yb2O3 accounts for the weight percentage of the base ceramic powder, zwt% means that BiFeO3 accounts for the weight percentage of the base ceramic powder, and the piezoelectric constant of the piezoelectric ceramic material is greater than or equal to 300p C / N, the electromechanical coupling coefficient is greater than or equal to 0.56, the dielectric loss under the strong field of 5kV / cm AC electric field is at least 2.74%, and the mechanical quality factor is greater than or equal to 1301. The piezoelectric performance and loss performance of the piezoelectric ceramic material provided by the invention meet the requirements of high-power underwater acoustic transducers, and have broad application prospects.

Description

technical field [0001] The invention belongs to the field of novel inorganic non-metallic materials, and more specifically relates to a piezoelectric ceramic material applied to an underwater acoustic transducer and a preparation method thereof. Background technique [0002] In modern technology, materials used as high-power underwater acoustic transducers are mainly used in piezoelectric transducers. Piezoelectric transducers are transducers manufactured using the forward and reverse piezoelectric effects of piezoelectric materials. They are widely used in Critical components such as military satellites, missiles, aircraft, ships, radars, and military robots. In practical applications, the application of piezoelectric high-power underwater acoustic transducers dominates, and high-power piezoelectric transducer materials are mainly piezoelectric ceramics. [0003] For piezoelectric ceramic materials for emitting transducers, the requirements of high power and high efficienc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/491C04B35/622C04B41/88H01L41/18H01L41/187H01L41/37H01L41/39H01L41/43
CPCC04B35/491C04B35/622C04B41/5116C04B41/88C04B2235/656C04B2235/768C04B2235/3298C04B2235/3262C04B2235/3274C04B2235/3294C04B2235/3225C04B2235/3224C04B2235/3213H10N30/8536H10N30/852H10N30/8554H10N30/092H10N30/097C04B41/4539C04B41/0072
Inventor 范桂芬吴秋晨吕文中王晓川雷文曾子庆
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com