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Strontium and barium doping lead niobium-stibium zirconate-titanate series piezoelectric ceramic and preparation method thereof

A technology of niobium antimony lead zirconate titanate and piezoelectric ceramics, which is applied in the field of piezoelectric ceramics, can solve the problem of joint doping effect, which is rarely studied, and achieve the effects of wide sintering temperature range, good comprehensive performance and low price.

Inactive Publication Date: 2008-09-17
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Research Sr 2+ , Ba 2+ Substitution of Pb 2+ There are many articles, but there are few studies on the joint doping effect of the two

Method used

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  • Strontium and barium doping lead niobium-stibium zirconate-titanate series piezoelectric ceramic and preparation method thereof
  • Strontium and barium doping lead niobium-stibium zirconate-titanate series piezoelectric ceramic and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 3

[0030] The dielectric and piezoelectric properties of Example 3 at different sintering temperatures are shown in Table 4.

[0031] Table 4

[0032] Temperature ( / °C)

[0033] It can be seen from Table 4 that with the change of sintering temperature, the dielectric and piezoelectric properties of Example 3 do not change significantly, and there is no large fluctuation with the change of temperature, which shows that this system has a wider sintering temperature range. Moreover, the performance is better under the condition of 1210 ℃, it can be seen that the Sr 2+ 、Ba 2+ Substitution of Pb 2+ The sintering temperature of the final system is lower than the sintering temperature at the best performance of the previous piezoelectric ceramics, which is also conducive to saving costs. Its good dielectric and piezoelectric properties will also promote the expansion of the piezoelectric ceramics market, and can be widely used in brakes, laser gyro laser cavity length compe...

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Abstract

The invention discloses a Sr and Ba-doped lead niobium-stibium zirconate-titanate (PNSZT)-based piezoelectric ceramic. The piezoelectric ceramic has the chemical formula as follows: Pb0.96Sr0.03Ba0.03(Sb1 / 2Nb1 / 2)0.02(ZrxTi0.98-x) O3, wherein x is in the range of 0.51-0.525. The raw materials of the piezoelectric ceramic include Pb3O4, Nb2O5, Sb2O3, ZrO2, TiO2, SrCO3 and BaCO3. The invention also discloses a production method of the piezoelectric ceramic. The method comprises the following steps: (1) material compounding, (2) granulation, (3) molding, (4) adhesive removal, (5) sintering and (6) grinding, cleaning and polarization. The piezoelectric ceramic provided in the invention has the advantages of low price, easily-accessible raw materials, good dielectric and piezoelectric performances, good uniformity in crystal morphology, high Curie temperature, low optimal sintering temperature, and wide sintering range; and is widely used in the fields of machinery, electronics and communication.

Description

technical field [0001] The invention relates to a piezoelectric ceramic, in particular to a piezoelectric ceramic based on Sr and Ba combined doping with niobium antimony zirconate lead titanate. Background technique [0002] Piezoelectric ceramics are an important class of functional ceramic materials. Ceramics based on lead zirconate titanate (PZT) are widely used in machinery, electronics, communications, etc. due to their excellent performance. Niobium antimony-lead zirconate titanate piezoelectric ceramics have good resonance frequency stability and time stability, and can be applied to filters, high-power underwater acoustic transducers, ultra-thin buzzers, high-power drivers, and vehicle numbers Automatic readout device, filter oscillator, etc. The performance parameters of the material can be changed by adjusting Zr / Ti. However, relying solely on the change of Zr / Ti cannot meet the performance requirements, and some impurities are often added in production to adjus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/491C04B35/622H01L41/187H10N30/853
Inventor 孙清池马卫兵张伟
Owner TIANJIN UNIV
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