High efficiency piezoelectric ceramic material with low sintering temperature and preparation technology thereof

A technology of piezoelectric ceramics and sintering temperature, which is applied in the field of high-efficiency piezoelectric ceramic materials with low sintering temperature and its preparation technology, can solve the problem that it cannot be used to manufacture high-power piezoelectric ceramic speakers, cannot be used to prepare high-power multi-layer speakers, Low piezoelectric performance and other problems, to achieve the effect of low cost, improved piezoelectric performance and high performance

Active Publication Date: 2010-05-26
AUDIOWELL ELECTRONICS GUANGDONG
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] Journal "Journal of Silicates" No. 4, 2006, low-temperature sintered PZT-0.5% PbO-WO3 piezoelectric ceramics, a low-temperature sintered piezoelectric ceramics, the sintering temperature is 1100 ° C, the dielectric constant is 1593, d33=364pC / N, Kp=0.596, its piezoelectricity is too low to be used in the preparation of high-power multilayer speakers
[0004] The Chinese invention patent with the patent application number 200410016324.0 discloses "doped lead niobate manganate-lead zirconate titanate piezoelectric ceramic material and its preparation process". The sintering temperature is 1050°C-1250°C. Due to its low piezoelectric performance , cannot be used to manufacture high-power piezoelectric ceramic speakers

Method used

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  • High efficiency piezoelectric ceramic material with low sintering temperature and preparation technology thereof
  • High efficiency piezoelectric ceramic material with low sintering temperature and preparation technology thereof
  • High efficiency piezoelectric ceramic material with low sintering temperature and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Pb 0.97-0.10 Sr 0.10 (Ni 1 / 3 Nb 2 / 3 ) 0.05 (Zn 1 / 3 Nb 2 / 3 ) 0.15 Zr 0.35 Ti 0.45 o 3 (1)

[0041] The main component is Pb 3 o 4 , ZrO 2 、TiO2 , SrCO 3 、NiCO 3 , ZnO, Nb 2 o 5 , weighed according to the formula of chemical formula (1), taking the above-mentioned main component gross weight as 100%, add the following additives: 0.008% H 3 BO 3 , 0.60% Sb 2 o 5 , 0.10% Bi 2 o 3 , 0.03% Li 2 CO 3 , 0.2% CuO;

[0042] Then, the above-mentioned ceramic raw materials are put into a planetary ball mill together with deionized water, mixed for 6-10 hours, and discharged, and dried, wherein during the planetary ball milling process, the mixture: ball: water = 1: 3.5: 0.7;

[0043] Pre-fire the mixed raw materials at 780°C-800°C for 2-3 hours, mix the obtained pre-fired powder with deionized water, and use a planetary ball mill for 6-10 hours until d 50 ≤0.40μm, d 90 ≤0.60μm, drying;

[0044] Add polyvinyl alcohol solution with a weight ratio of 5% t...

Embodiment 2

[0051] Pb 0.995-0.08 Sr 0.05 Ba 0.03 (Ni 1 / 3 Nb 2 / 3 ) 0.08 (Zn 1 / 3 Nb 2 / 3 ) 0.12 Ti 0.40 Zr 0.40 o 3 (2)

[0052] The main component is Pb 3 o 4 , ZrO 2 、TiO 2 , SrCO 3 、BaCO 3 、NiCO 3 , ZnO, Nb 2 o 5 , weighed according to the formula of chemical formula (2), taking the above-mentioned main component gross weight as 100%, add the following additives: 0.05% SiO 2 and 0.05% H 3 BO 3 mixture, 0.30% Sb 2 o 3 , 0.40% Bi 2 o 5 , 0.15% Li 2 CO 3 , 0.15% CuO;

[0053] Then, the above-mentioned ceramic raw materials are put into the planetary ball mill together with deionized water, mixed for 6-10 hours, then discharged, and dried, wherein during the planetary ball milling process, the mixture: ball: water = 1: 3.5: 0.9;

[0054] Pre-fire the mixed raw materials at 780°C-800°C for 2-3 hours, mix the obtained pre-fired powder with deionized water, and use a planetary ball mill for 6-10 hours until d 50 ≤0.40μm, d 90 ≤0.60μm, drying;

[0055] Add polyviny...

Embodiment 3

[0062] Pb 1.05-0.03 Ba 0.03 (Ni 1 / 3 Nb 2 / 3 ) 0.15 (Zn 1 / 3 Nb 2 / 3 ) 0.05 Ti 0.45 Zr 0.35 o 3 (3)

[0063] The main component is Pb 3 o 4 , ZrO 2 、TiO 2 、BaCO 3 、NiCO 3 , ZnO, Nb 2 o 5 , weighed according to the formula of chemical formula (3), taking the above-mentioned main component gross weight as 100%, add the following additives: 0.1% SiO 2 , 0.10% Sb 2 o 5 , 0.60% Bi 2 o 3 , 0.2% Na 2 CO 3 , 0.08% CuO;

[0064] Then, the above-mentioned ceramic raw materials are put into a planetary ball mill together with deionized water, mixed for 6-10 hours, then discharged, and dried, wherein during the planetary ball milling process, mixture: ball: water = 1: 3.5: 0.8;

[0065] Pre-fire the mixed raw materials at 780°C-800°C for 2-3 hours, mix the obtained pre-fired powder with deionized water, and use a planetary ball mill for 6-10 hours until d 50 ≤0.40μm, d 90 ≤0.60μm, drying;

[0066] Add polyvinyl alcohol solution with a weight ratio of 5% to 10% ...

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Abstract

The invention discloses a piezoelectric ceramic with low sintering temperature and high piezoelectric property and preparation technology thereof. The piezoelectric ceramic comprises main ingredients and auxiliary ingredients. The chemical formula of the main ingredients is as below, wherein Me is any one or two of Ba, Ca and Sr, and the auxiliary ingredients are SiO2, H3BO3 or the mixture of the two ingredients, and Sb2O5 or Sb2O3, Bi2O3 or Bi2O5, Li2CO3 or Na2CO3 or the mixture of the two ingredients, and CuO. The preparation technology comprises mixing, ball milling, stoving, presintering, ball milling, pelleting, forming, dumping, sintering, silver brushing, silver sintering and polarizing. The piezoelectric ceramic provided by the invention has the advantages of energy saving, environmental protection, low cost, high property and the like, has wide application prospect and is especially suitable for piezoelectric ceramic loudspeakers and piezoelectric buzz films with large power.

Description

technical field [0001] The invention relates to the field of piezoelectric ceramics and its preparation technology, in particular to a lead zirconate titanate (PZT) piezoelectric ceramic, which is suitable for piezoelectric ceramic buzzers, multilayer piezoelectric speakers, and multilayer piezoelectric actuators. ). Background technique [0002] PZT piezoelectric ceramics are polycrystals formed by sintering lead dioxide, lead zirconate, and lead titanate at high temperatures, and are widely used in fields such as industry, agriculture, military affairs, and medical treatment. The sintering temperature is mostly around 1300°C, and the lead volatilization is serious, which not only affects the material performance, but also pollutes the environment. It is of great significance to study low-temperature sintering: ① reduce lead volatilization, and prevent the composition of ceramics from deviating from the design composition; ② reduce environmental pollution; ③ save energy , ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/493C04B35/622
Inventor 姜德星
Owner AUDIOWELL ELECTRONICS GUANGDONG
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