High-voltage resistant high-stability piezoelectric ceramic

A piezoelectric ceramics, high-stability technology, applied in the field of piezoelectric ceramics, can solve the problems of material performance deterioration, depolarization, poor structural stability, etc., achieve low failure rate, small performance drift, improve stability and consistency Effect

Active Publication Date: 2015-01-28
HUNAN JIAYEDA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain high piezoelectric performance, soft additives are generally used for doping modification, and the formula components are selected near the quasi-phase boundary (MPB). In the junction area, although the performance is active,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1), mixing: weigh 100 parts by weight of lead tetroxide, 14 parts by weight of barium carbonate, 3.5 parts by weight of strontium carbonate, 28 parts by weight of zirconium dioxide, 15 parts by weight of titanium dioxide, 9.6 parts by weight of niobium pentoxide, and 9.6 parts by weight of niobium pentoxide. 2.8 parts by weight of nickelous, respectively baked at a temperature of 120-150 ℃ for 12 hours, then mixed together, and then added 0.05 parts by weight of cerium oxide, 0.03 parts by weight of chromium oxide, 0.04 parts by weight of silicon dioxide, lithium carbonate 0.02 parts by weight, fully mixed; then the above-mentioned raw materials were added to the planetary mill and mixed for 6 hours. When mixing, the zirconium balls and Deionized water;

[0020] (2) Pre-sintering: the mixed materials are dried and placed in an alumina crucible, and then placed in a resistance furnace for pre-synthesis until the temperature reaches 1010-1030°C, and then kept for 2 hours...

Embodiment 2

[0028] (1), mixing: take by weighing 100 parts by weight of lead tetroxide, 17 parts by weight of barium carbonate, 6.5 parts by weight of strontium carbonate, 30 parts by weight of zirconium dioxide, 17 parts by weight of titanium dioxide, 9.6 parts by weight of niobium pentoxide, and 9.6 parts by weight of niobium pentoxide. 2.8 parts by weight of nickelous, respectively baked at a temperature of 120-150 ℃ for 12 hours, then mixed together, and then added 0.07 parts by weight of cerium oxide, 0.05 parts by weight of chromium oxide, 0.06 parts by weight of silicon dioxide, lithium carbonate 0.04 parts by weight, fully mixed; then the above-mentioned raw materials were added to the planetary mill and mixed for 6 hours. When mixing, the zirconium balls and Deionized water;

[0029] Steps (2)-(8) are the same as in Example 1.

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PUM

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Abstract

The invention discloses high-voltage resistant high-stability piezoelectric ceramic, comprising the following raw materials in parts by weight: 100 parts of lead tetroxide, 14-17 parts of barium carbonate, 3.5-6.5 parts of strontium carbonate, 28-30 parts of zirconium dioxide, 15-17 parts of titanium dioxide, 9.6 parts of niobium pentoxide, 2.8 parts of nickel protoxide, 0.05-0.07 part of cerium oxide, 0.03-0.05 part of chromium sesquioxide, 0.04-0.06 part of silicon dioxide and 0.02-0.04 part of lithium carbonate. The piezoelectric ceramic is prepared through mixing, pre-sintering, crushing, baking, pulping, cast film forming, isostatic pressing, sintering, electric shock treatment and polarization. A micro unit cell of the piezoelectric ceramic is square unit cell, the included angle between crystal axes is 90 degrees, the unit cell structure is relatively stable, and the electric domain is changed little by high voltage and high temperature shock. A device manufactured by adopting the piezoelectric ceramic is low in performance drift and low in failure rate, the stability and consistency of products are improved, and large-scale application of piezoelectric high-power products is promoted.

Description

technical field [0001] The invention relates to the technical field of piezoelectric ceramics, in particular to a high-voltage-resistant high-stability piezoelectric ceramic. Background technique [0002] Piezoelectric ceramics is an emerging ceramic material with a history of more than 100 years of development. In the middle of the last century, the invention of PZT piezoelectric ceramics promoted the rapid development of electronic technology, so that various electronic products appeared in front of us. Piezoelectric ceramics, as its internal precision components, can convert electrical energy into mechanical energy or The conversion of mechanical energy into electrical energy plays a key role in electronic products. [0003] In the process of product development, due to the harsh application conditions of components, such as the working voltage is very high, reaching 220V; the ultra-long working time is required to reach 3 years or more; the operating temperature is requ...

Claims

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Application Information

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IPC IPC(8): C04B35/01C04B35/622
CPCC04B35/497C04B2235/3203C04B2235/3213C04B2235/3215C04B2235/3229C04B2235/3232C04B2235/3241C04B2235/3244C04B2235/3251C04B2235/3279C04B2235/3296C04B2235/3418
Inventor 马国阳施小罗
Owner HUNAN JIAYEDA ELECTRONICS
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