High-power piezoelectric material and preparation method thereof

A piezoelectric material and mixing technology, applied in the field of high-power piezoelectric materials and their preparation, can solve the problems that power capacity cannot adapt to the application of high-power ultrasonic equipment, poor mechanical properties, etc., and achieve transgranular fracture and improved mechanical properties. , the effect of reducing tanδ

Active Publication Date: 2013-12-25

WUXI ZHONGKE ULTRASONIC TECH

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AI-Extracted Technical Summary

Problems solved by technology

However, PZT-8 piezoelectric materials have always troubled people: poor mechanical proper...

Abstract

The invention relates to a high-power piezoelectric material. The piezoelectric material has a chemical composition shown in a formula (I). Doping modification is carried out on the existing PZT (piezoelectric transducer) ceramic material by doping metal elements, so as to obtain the piezoelectric material with the chemical composition shown in the formula (I), the mechanical property of the piezoelectric material is improved, the power capacity is greatly improved based on the original performance advantages, and the piezoelectric material can be applied to high-power ultrasonic equipment.

Technology Topic

ElectricityPower capability +5

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Examples

Experimental program(5)
Effect test(1)

Example Embodiment

[0048] Example 1

[0049] (1) According to the following chemical composition ingredients, pre-compacted, pre-fired, and second-time pre-fired after mixing to obtain substance a;

[0050] (2) Ball milling substance a, pulverizing D50≤0.7μm, granulating, molding and discharging plastic, and then sintering, surface grinding, cylindrical grinding and internal grinding to obtain substance b;

[0051] (3) The substance b is subjected to upper electrode, polarization and aging treatments to obtain piezoelectric materials.

[0052] The chemical composition of the final piezoelectric material is as follows:

[0053] Pb(Zr 0.45 Ti 0.55 )O 3 +0.015mol%CaFeO 5/2 +1/10000wt% glass phase +1/10000wt% CeO 2

[0054] The mol% and wt% are based on Pb(Zr 0.45 Ti 0.55 )O 3 As a benchmark.

Example Embodiment

[0055] Example 2

[0056] (1) According to the following chemical composition ingredients, pre-compacted, pre-fired, and second-time pre-fired after mixing to obtain substance a;

[0057] (2) Ball milling substance a, pulverizing D50≤0.7μm, granulating, molding and discharging plastic, and then sintering, surface grinding, cylindrical grinding and internal grinding to obtain substance b;

[0058] (3) The substance b is subjected to upper electrode, polarization and aging treatments to obtain piezoelectric materials.

[0059] The chemical composition of the final piezoelectric material is as follows:

[0060] Pb 1-x Sr x (Zr y Ti 1-y )O 3 +0.095mol%CaFeO 5/2 +3/10000wt% glass phase +1/1000wt% CeO 2

[0061] Where x is 0.1, y is 0.55, and the mol% and wt% are based on Pb 1-x Sr x (Zr y Ti 1-y )O 3 As a benchmark.

Example Embodiment

[0062] Example 3

[0063] (1) According to the following chemical composition ingredients, pre-compacted, pre-fired, and second-time pre-fired after mixing to obtain substance a;

[0064] (2) Ball milling substance a, pulverizing D50≤0.7μm, granulating, molding and discharging plastic, and then sintering, surface grinding, cylindrical grinding and internal grinding to obtain substance b;

[0065] (3) The substance b is subjected to upper electrode, polarization and aging treatments to obtain piezoelectric materials.

[0066] The chemical composition of the final piezoelectric material is as follows:

[0067] Pb 1-x Sr x (Zr y Ti 1-y )O 3 +0.055mol%CaFeO 5/2 +3/1000wt% glass phase+1/2500wt% CeO 2

[0068] Where x is 0.05, y is 0.50, and the mol% and wt% are based on Pb 1-x Sr x (Zr y Ti 1-y )O 3 As a benchmark.

PUM

Property	Measurement	Unit
Grain	<= 5.0	µm
Piezoelectric strain constant	>= 260.0	pc/N
Curie temperature	320.0	°C

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve mechanical properties

High-power piezoelectric material and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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