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Low-temperature sintered piezoelectric ceramic material and preparation method thereof

A technology of piezoelectric ceramics and low-temperature sintering, which is applied in the field of low-temperature sintered piezoelectric ceramic materials and its preparation, low-temperature sintered piezoelectric ceramics, and can solve the problem of affecting the performance stability of PZT-based piezoelectric ceramics and making it difficult to obtain uniform components. Dense ceramics, deviation from stoichiometry, etc., to achieve the effect of low production cost, easy adjustment, and suppression of volatilization

Inactive Publication Date: 2015-07-08
JIANGSU UNIV
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Problems solved by technology

[0003] ℃, because lead oxide begins to volatilize at temperatures higher than 800°C, it is difficult to obtain dense ceramics with uniform components, and at the same time pollute the environment; lead oxide volatilization during the sintering process causes the components to deviate from the stoichiometry, which reduces the performance of the ceramics and causes The fluctuation of Zr / Ti ratio affects the stability of the performance of PZT-based piezoelectric ceramics; if it is lower than 1000

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  • Low-temperature sintered piezoelectric ceramic material and preparation method thereof

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Embodiment Construction

[0021] The present invention is described further in conjunction with embodiment now, and table 1 provides the formula of altogether 4 samples of the embodiment of the present invention.

[0022] The main raw material of the formula of totally 4 samples of the embodiment of the present invention adopts conventional chemical raw material, and synthesizes in advance (Li 1 / 2 La 1 / 2 )TiO 3 , (Bi 1 / 2 Li 1 / 2 )(In 1 / 2 Nb 1 / 2 )O 3 , Pb(Co 1 / 2 W 1 / 2 )O 3 , (Pb 0.95 Ba 0.05 )(Zr 0.54 Ti 0.46 )O 3 , mix the ingredients according to the above formula, mix the prepared materials with distilled water or deionized water using a planetary ball mill, material: ball: water = 1:3: (0.6~1.0), after ball milling for 4~8 hours, dry to obtain Dry powder, add polyvinyl alcohol solution with a concentration of 10% (percentage by weight) accounting for 5-8% of the weight of the dry powder, granulate, pass through a 40-mesh sieve after mixing, and then carry out under a pressure of 20-30M...

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Abstract

The invention relates to the technical field of inorganic non-metal materials, particularly a low-temperature sintered piezoelectric ceramic material and a preparation method thereof. The formula is x(Li1 / 2La1 / 2)TiO3-m(Bi1 / 2Li1 / 2)(In1 / 2Nb1 / 2)O3-yPb(Co1 / 2W1 / 2)O3-(1-x-m-y)(Pb0.95Ba0.05)(Zr0.54Ti0.46)O3+0.01-0.6wt.%La2O3, wherein 0.01<=x<=0.1mol, 0.01<=m<=0.1mol, and 0.01<=y<=0.1mol; and (Bi1 / 2Li1 / 2)(In1 / 2Nb1 / 2)O3, Pb(Co1 / 2W1 / 2)O3 and (Pb0.95Ba0.05)(Zr0.54Ti0.46)O3 are respectively synthesized from conventional chemical raw materials by a solid-phase process. The ceramic preparation method by the conventional solid-phase process uses common chemical raw materials to prepare the high-voltage-property low-temperature sintered piezoelectric ceramic; and the piezoelectric ceramic is suitable for preparing a multilayer ceramic driver.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a low-temperature sintered piezoelectric ceramic material and its preparation method. It adopts the conventional solid-phase ceramic preparation method and uses common chemical raw materials to prepare high-voltage electrical properties at low temperature. The piezoelectric ceramic is sintered, and the piezoelectric ceramic is suitable for preparing a multilayer ceramic driver. Background technique [0002] Piezoelectric ceramics have excellent piezoelectric effects and are widely used in functional ceramics, such as sensors, transducers, filters, etc., and play an important role in the national economy and defense industry. Due to the lead-free piezoelectric The piezoelectric properties of ceramics are very different from those of lead zirconate titanate-based piezoelectric ceramics. At present, the application of piezoelectric ceramics is mainly lead zi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/491C04B35/22
Inventor 高春华黄新友李军
Owner JIANGSU UNIV
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