Unlock instant, AI-driven research and patent intelligence for your innovation.

Piezoelectric ceramics composition and piezoelectric device using same

A technology of piezoelectric ceramics and composites, applied in the direction of piezoelectric/electrostrictive/magnetostrictive devices, piezoelectric devices/electrostrictive devices, fixed capacitor parts, etc., can solve the problems of increased production costs and other issues

Inactive Publication Date: 2004-10-27
MURATA MFG CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, such piezoelectric ceramic devices also require expensive electrode materials such as platinum or palladium, which increases production costs

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
  • Piezoelectric ceramics composition and piezoelectric device using same
  • Piezoelectric ceramics composition and piezoelectric device using same
  • Piezoelectric ceramics composition and piezoelectric device using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh raw material SrCO 3 、 Bi 2 o 3 , Nb 2 o 5 , MgCO 3 , CaCO 3 、BaCO 3 , La 2 o 3 、Nd 2 o 3 、Sm 2 o 3 , Y 2 o 3 , SiO 2 or MnCO 3 , dubbed (Sr 1-x m x ) Bi 2 (Nb 1-y Si y ) 2 o 9 +z% (weight) MnCO 3 A composition, wherein M is selected from one of Mg, Ca, Ba, La, Nd, Sm or Y; y and z meet the following conditions: 0≤y≤0.35 and 0≤z≤1.1; x meets the following conditions: when When M is Mg, Ca or Ba, 0≤x≤0.6, and when M is La, Nd, Sm or Y, 0≤x≤0.4. The weighed raw materials were wet mixed in a ball mill for about 4 hours to obtain a mixture. The mixture is dried and then calcined at 700-900° C. to obtain a calcined product. Coarsely pulverize the calcined product, and then wet mill it in a ball mill for 4 hours with an appropriate amount of organic binder. The ball-milled powder is passed through a 40-mesh sieve to control the particle size of the powder. Then at 1000kg / cm 2 The powder was compressed under pressure into discs with a diameter...

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

No PUM Login to View More

Abstract

A piezoelectric ceramic composition mainly contains a component of the formula SrBi2Nb2O9 and includes Si in a proportion of more than 0 mol and equal to or less than about 0.15 mol relative to 1 mol of Bi in the main component of the formula. This piezoelectric ceramic composition can be fired at lower temperatures, exhibits a practicable electromechanical coefficient kt even when fired at firing temperatures of 1100 DEG C. or less, and is useful as materials for piezoelectric ceramic filters, piezoelectric ceramic oscillators, piezoelectric ceramic resonators, and other piezoelectric ceramic devices. By using the piezoelectric ceramic composition, satisfactory piezoelectric ceramics can be obtained.

Description

technical field [0001] The present invention relates to a piezoelectric ceramic composition and a piezoelectric ceramic device using the same. Specifically, the present invention relates to piezoelectric ceramic compositions useful as piezoelectric ceramic filters, piezoelectric ceramic oscillators, piezoelectric ceramic resonators and other piezoelectric ceramic devices, and to piezoelectric ceramics using the same device. Background technique [0002] Mainly contains lead zirconate titanate (Pb(Ti x Zr 1-x )O 3 ) or lead titanate (PbTiO 3 ) piezoelectric ceramic composition is widely used in piezoelectric ceramic filters, piezoelectric ceramic oscillators, piezoelectric ceramic resonators and other piezoelectric ceramic devices. However, this type of piezoelectric ceramic composition mainly containing lead titanate zirconate or lead titanate inevitably contains a large amount of lead components, and lead oxide will be lost due to evaporation during the preparation ste...

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): C04B35/00C04B35/453C04B35/495H01L41/09H01L41/187H03H9/17H03H9/58
CPCC04B35/453C04B35/495H01L41/187H03H9/178H10N30/853
Inventor 泽田拓也木村雅彦安藤阳林宏一
Owner MURATA MFG CO LTD