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

A lead-free piezoelectric ceramic with nanowire distribution and its preparation method and application

A lead-free piezoelectric and piezoelectric ceramic technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problem of high cost, poor piezoelectric sensitivity, lead Pollution and other problems, to achieve the effect of improving piezoelectric performance, fast response, and high flexibility

Active Publication Date: 2019-08-27
浙江巨力宝纺织科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of high cost, lead pollution, and poor piezoelectric sensitivity in the current piezoelectric ceramics used in large-scale power generation materials, the present invention provides a lead-free piezoelectric ceramics distributed in the form of nanowires

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Press Zn 0.1 al 8 / 15 Ca 0.1 Ti 0.5 Zr 0.5 o 3 Molecular formula composition weighing, weighing ratio of oxides of Zn, Ti, Al, Ca, Zr in molar ratio: 1.5:7.5:4:1.5:7.5, wherein Zr is made of zirconia nanofibers with a diameter of less than 100nm, Linear bodies with a length greater than 10 micrometers;

[0032] (2) Grind the Zn, Ti, Al, Ca oxides prepared in step (1) with pure water in a grinder for 2 hours, and then dry;

[0033] (3) Flash the ground and dried material in step (2) at 600°C for 1 min to make the material form crystal grains connected by amorphous, add zirconia nanofibers after cooling, mix and disperse evenly;

[0034](4) Sinter the materials dispersed in step (3) at 900°C for 1 hour, and the Zn, Ti, Al, and Ca oxides grow into perovskite crystal grains, and grow along the zirconia nanofibers to form crystal grains. aggregated nanowires;

[0035] (5) Further increase the sintering temperature to 1500° C. and sinter for 15 minutes. The zirconi...

Embodiment 2

[0038] (1) Press Zn 0.3 al 13 / 30 Ca 0.05 Ti 0.5 Zr 0.5 o 3 Molecular formula composition weighing, weighing ratio of oxides of Zn, Ti, Al, Ca, Zr in molar ratio: 18:9:13:0.9:9, wherein Zr is made of zirconia nanofibers with a diameter of less than 100nm, Linear bodies with a length greater than 10 micrometers;

[0039] (2) Grind the Zn, Ti, Al, Ca oxides prepared in step (1) with pure water in a grinder for 2 hours, and then dry;

[0040] (3) Flash the ground and dried material in step (2) at 500°C for 1 min to make the material form crystal grains connected by amorphous, add zirconia nanofibers after cooling, mix and disperse evenly;

[0041] (4) Sinter the materials dispersed in step (3) at 900°C for 0.5h, and Zn, Ti, Al, and Ca oxides grow into perovskite crystal grains, and grow along the zirconia nanofibers to form crystal grains. nanowires of aggregates;

[0042] (5) Further increase the sintering temperature to 1500°C and sinter for 35 minutes, the zirconia nano...

Embodiment 3

[0045] (1) Press Zn 0.3 al 13 / 30 Ca 0.05 Ti 0.5 Zr 0.5 o 3 Molecular formula composition weighing, weighing ratio of oxides of Zn, Ti, Al, Ca, Zr in molar ratio: 18:9:13:0.9:9, wherein Zr is made of zirconia nanofibers with a diameter of less than 100nm, Linear bodies with a length greater than 10 micrometers;

[0046] (2) Grind the Zn, Ti, Al, Ca oxides prepared in step (1) with pure water in a grinder for 2 hours, and then dry;

[0047] (3) Flash the ground and dried material in step (2) at 500°C for 1 min to make the material form crystal grains connected by amorphous, add zirconia nanofibers after cooling, mix and disperse evenly;

[0048] (4) Sinter the materials dispersed in step (3) at 900°C for 0.5h, and Zn, Ti, Al, and Ca oxides grow into perovskite crystal grains, and grow along the zirconia nanofibers to form crystal grains. nanowires of aggregates;

[0049] (5) Further increase the sintering temperature to 1500°C and sinter for 20 minutes, the zirconia nano...

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
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a piezoelectric material, in particular to lead-free piezoelectric ceramic, and further relates to a lead-free piezoelectric ceramic wire distributed in the form of nanowires and a preparation method and application thereof. The lead-free piezoelectric ceramic wire is characterized in that a lead-free low-cost oxide is taken as a raw material to form piezoelectric ceramic shown as ZnxAl{2 / 3-2 / 3(x+y)}CayTi0.5Zr0.5O3; crystal grains of the piezoelectric ceramic are distributed in the form of nanowires, and the piezoelectric ceramic distributed in the form of nanowires can be deformed remarkably under the action of external slight vibration, so that high-sensitivity power generation can be performed. For instance, the piezoelectric ceramic can be applied to glass, road surface protection plates and air compressor room acoustic panels; by means of the high sensitivity of the lead-free piezoelectric ceramic distributed in the form of nanowires, power can be generation through vibration generated by sound. Furthermore, the invention provides a preparation method for forming nanowires by growing crystal grains under the guidance of nanofibers.

Description

technical field [0001] The invention relates to a piezoelectric material, in particular to a lead-free piezoelectric ceramic, and further relates to a lead-free piezoelectric ceramic wire distributed in the form of nanometer wires, a preparation method and an application thereof. Background technique [0002] Piezoelectric materials are functional materials that realize the mutual conversion of mechanical energy and electrical energy. Under the action of mechanical force, deformation (elongation and compression) causes relative displacement of charged particles, so that the total electric moment of the crystal changes to generate electrical energy. This principle was first discovered by the Curie brothers in 1880. Applying pressure in a specific direction of the quartz crystal causes charges to appear on the surface of the quartz crystal, thus opening the research on piezoelectric materials. [0003] In recent years, with the rapid development of industrialized society, the ...

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): C04B35/80C04B35/49H02N2/18
CPCH02N2/186C04B35/49C04B2235/3208C04B2235/3217C04B2235/3284C04B2235/5236C04B2235/96
Inventor 陈庆曾军堂
Owner 浙江巨力宝纺织科技有限公司