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A kind of barium calcium zirconate titanate lead-free piezoelectric ceramic material and preparation method thereof

A barium calcium zirconate titanate and lead-free piezoelectric technology is applied in the field of barium calcium zirconate titanate lead-free piezoelectric ceramic materials, which can solve the problems of high sintering temperature of piezoelectric ceramics and difficulty in application of lead-free piezoelectric ceramics. To achieve the effect of good performance stability and high security

Inactive Publication Date: 2019-04-02
JIANGSU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Some researchers have used CaTiO 3 -BaZrO 3 -BaTiO 3 compound to form a solid solution, which greatly improves the piezoelectric performance, and the CaTiO obtained by this method 3 -BaZrO 3 -BaTiO 3 Piezoelectric coefficient (d 33 ) is 482PC / N, radial electromechanical coupling coefficient (K P ) is 0.48, however, its Curie temperature is about 90°C, and the sintering temperature of its piezoelectric ceramics is relatively high (1500-1600°C), and it is difficult to apply this system of lead-free piezoelectric ceramics

Method used

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  • A kind of barium calcium zirconate titanate lead-free piezoelectric ceramic material and preparation method thereof
  • A kind of barium calcium zirconate titanate lead-free piezoelectric ceramic material and preparation method thereof

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Embodiment Construction

[0018]The present invention will be further described in conjunction with embodiment now. Table 1 provides the formulas of a total of 4 samples of the embodiment of the present invention.

[0019] The main raw material of the formula of totally 4 samples of the embodiment of the present invention adopts piezoelectric ceramic raw material, adopts conventional chemical raw material to synthesize respectively with solid-phase method at first during preparation (Ba 0.85 Ca 0.15 )(Ti 0.9 Zr 0.1 )O 3 、BiFeO 3 、 Bi 2 WO 3 , Ba(Yb 1 / 2 Nb 1 / 2 )O 3 , and then according to the above formula ingredients, the prepared material is mixed with absolute ethanol by ball milling in a planetary ball mill, material: ball: absolute ethanol = 1:3: (0.6~1.0) (mass ratio), after ball milling for 4 to 8 hours , dry to obtain dry powder, add the polyvinyl alcohol solution that accounts for its weight 8~10% concentration and be 10% (percentage by weight) in the dry powder, carry out granulation...

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Abstract

The invention relates to the technical field of inorganic nonmetallic materials, in particular to a barium calcium zirconate titanate leadless piezoelectric ceramic material. A formula comprises components as follows: 91wt.%-98 wt.% of (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3, 0.1 wt.%-7.0wt.% of BiFeO3, 0.01 wt.%-1wt.% of Bi2WO6, 0.1wt.%-4wt% of Ba(Yb1 / 2Nb1 / 2)O3 and 0.01wt.%-1.8wt.% of Co2O3, wherein (Ba0.85Ca0.15)(Ti0.9Zr0.1)O3 is prepared from ordinary chemical raw materials for piezoelectric ceramics, the leadless piezoelectric ceramics which are cadmium-free and have a high-tension electricity property are prepared, the sintering temperature of the piezoelectric ceramics can be greatly reduced, the barium calcium zirconate titanate leadless piezoelectric ceramic material is suitable for preparing a piezoelectric ceramic sensor, and the cost of the piezoelectric ceramics can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of inorganic non-metallic materials, in particular to a barium calcium zirconate titanate lead-free piezoelectric ceramic material. It adopts common chemical raw materials of piezoelectric ceramics to prepare lead-free piezoelectric ceramics with lead-free and cadmium-free high-voltage performance, and can greatly reduce the sintering temperature of piezoelectric ceramics. The piezoelectric ceramics are suitable for the preparation of piezoelectric ceramic sensors , can greatly reduce the cost of piezoelectric ceramics, conforms to the development direction of piezoelectric ceramics, can replace lead-containing piezoelectric ceramics in applications in some fields, and does not pollute the environment during preparation and use. Background technique [0002] Piezoelectric material is a new type of functional material capable of energy conversion. It can realize the conversion between mechanical energy and el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/49C04B35/622
CPCC04B35/49C04B35/622C04B2235/3208C04B2235/3215C04B2235/3224C04B2235/3251C04B2235/3258C04B2235/3274C04B2235/3275C04B2235/3298
Inventor 黄新友殷佳高春华岳振星李军
Owner JIANGSU UNIV
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