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Barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material and preparation method thereof

A barium calcium zirconate titanate-based lead-free piezoelectric technology, applied in the field of ceramic materials, can solve the problems of high sintering temperature, achieve good repeatability, superior ferroelectric performance, and reduce the effect of sintering temperature

Active Publication Date: 2017-10-13
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on barium calcium zirconate titanate mainly focuses on exploring the relationship between phase structure, microstructure and electrical properties, and the origin of piezoelectricity. However, the sintering temperature of barium calcium zirconate titanate is high (1450-1500 ℃) has always been a problem

Method used

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  • Barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material and preparation method thereof
  • Barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material and preparation method thereof
  • Barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material and preparation method thereof

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Effect test

Embodiment 1

[0036] 1. Ingredients

[0037] According to 0.95 (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -0.05 (Ba 0.3 Sr 0.7 )TiO 3 stoichiometry, weigh the raw material BaCO 3 (purity 99%) 9.1870g, CaCO 3 (purity 99%) 0.8073g, ZrO 2 (purity 99%) 0.6626g, TiO 2 (purity 99.99%) 4.0506g, SrCO 3 (purity 99%) 0.2926g, and take by weighing NaCl (purity 99%) 6.5915g, KCl (purity 99%) 8.4085g, will mix all substances weighed well, obtain raw material mixture; Raw material mixture is packed in the nylon tank , using zirconium balls as the grinding balls and absolute ethanol as the ball milling medium, fully mixed and milled with a ball mill at 401 rpm for 16 hours, discharged, dried at 80°C for 12 hours, and ground with a mortar to obtain a mixture.

[0038] 2. Pre-burning

[0039] Put the raw material mixture ground in step 1 in an alumina crucible, lightly compact it with an agate rod, cover it, place it in a resistance furnace, and keep it warm at 1100°C for 4 hours for pre-firing. Aft...

Embodiment 2

[0053] In the batching step 1 of the present embodiment, according to 0.90 (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -0.10 (Ba 0.3 Sr 0.7 )TiO 3 stoichiometry, weigh the raw material BaCO 3 (purity 99%) 8.9213g, CaCO 3 (purity 99%) 0.7684g, ZrO 2 (purity 99%) 0.6306g, TiO 2 (purity 99.99%) 4.0920g, SrCO 3 (purity 99%) 0.5877g, and weigh NaCl (purity 99%) 6.5915g, KCl (purity 99%) 8.4085g, other steps are the same as Example 1, prepare barium zirconate titanate doped with strontium barium titanate Calcium-based lead-free piezoelectric ceramic material.

Embodiment 3

[0055] In the batching step 1 of the present embodiment, according to 0.85 (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 -0.15 (Ba 0.3 Sr 0.7 )TiO 3 stoichiometry, weigh the raw material BaCO 3 (purity 99%) 8.6532g, CaCO 3 (purity 99%) 0.7291g, ZrO 2 (purity 99%) 0.5984g, TiO 2 (purity 99.99%) 4.1337g, SrCO 3 (purity 99%) 0.8856g, and weigh NaCl (purity 99%) 6.5915g, KCl (purity 99%) 8.4085g, other steps are the same as Example 1, prepare barium zirconate titanate doped with strontium barium titanate Calcium-based lead-free piezoelectric ceramic material.

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Abstract

The invention discloses a barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material and a preparation method of the barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material. The general formula of the ceramic material is (1-x)(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-x(Ba0.3Sr0.7)TiO3, in the formula, x represents the mole number of (Ba0.3Sr0.7)TiO3, and the value of X ranges from 0.05 to 0.20. According to the invention, a molten salt method is adopted, and process steps of material preparation, ball-milling, presintering, salt leaching, granulation, tabletting, sintering, polishing, silver burning and the like are carried out, therefore, the barium strontium titanate doped barium calcium zirconate titanate based lead-free piezoelectric ceramic material with excellent dielectric properties, good ferroelectric properties, high piezoelectric properties, good energy storage and strong practicability, high purity and easy production is prepared, and further simple in preparation method, good in repeatability and high in rate of finished products.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a barium calcium zirconate titanate-based lead-free piezoelectric ceramic material doped with barium strontium titanate and a preparation method of the ceramic material. Background technique [0002] Piezoelectric ceramics are high-tech functional materials that can realize mutual conversion between electrical energy and mechanical energy, and have been widely used in energy storage, communication, electronics, military and information fields. Lead zirconate titanate (PZT)-based piezoelectric ceramics have been widely used in the past due to their excellent electrical properties at quasi-isotropic phase boundaries. However, the high content of lead oxide in the material is a poisonous and harmful substance that is volatile at high temperature. During the high-temperature sintering process of PZT-based ceramics, the volatilization of a large amount of lead wi...

Claims

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Application Information

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IPC IPC(8): C04B35/01C04B35/626C04B35/64C04B41/88
CPCC04B35/01C04B35/6261C04B35/64C04B41/5116C04B41/88C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3232C04B2235/3244C04B2235/6562C04B2235/6565C04B2235/661
Inventor 杨祖培陈晓芳晁小练
Owner SHAANXI NORMAL UNIV
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