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Potassium sodium niobate based lead-free piezoelectric material

A potassium-sodium niobate-based, lead-free piezoelectric technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., can solve problems such as difficult sintering, low Curie temperature, and difficulty in application , to achieve the effects of low cost, high piezoelectric performance and easy production

Inactive Publication Date: 2017-01-04
BEIJING ZHONGKE AOBEI ULTRASONIC TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a potassium sodium niobate-based lead-free piezoelectric material, which can effectively solve the problems of difficult sintering, low Curie temperature of the product, and difficulty in application.

Method used

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  • Potassium sodium niobate based lead-free piezoelectric material
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Embodiment 1

[0013] In the specific implementation of the present invention, a potassium sodium niobate-based lead-free piezoelectric material has a general formula of (1- x )(0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 )– x BaZrO 3 , where x is 0, that is, the general formula is 0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 .

Embodiment 2

[0015] In the specific implementation of the present invention, a potassium sodium niobate-based lead-free piezoelectric material has a general formula of (1- x )(0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 )– x BaZrO 3 , where x is 0.01, that is, the general formula is 0.99(0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 )–0.01BaZrO 3 .

Embodiment 3

[0017] In the specific implementation of the present invention, a potassium sodium niobate-based lead-free piezoelectric material has a general formula of (1- x )(0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 )– x BaZrO 3 , where x is 0.015, that is, the general formula is 0.985 (0.96K 0.48 Na 0.52 NbO 3 –0.04Bi 0.5 K 0.5 ZrO 3 )–0.015BaZrO 3 .

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Abstract

The invention relates to a potassium sodium niobate based lead-free piezoelectric material. The problems that sintering is difficult, the Curie temperature of a product is low, and application is difficult can be effectively solved. According to the technical scheme, the general formula of the potassium sodium niobate based lead-free piezoelectric material is (1-x)(0.96K0.48Na0.52NbO3-0.04Bi0.5K0.5ZrO3)-xBaZrO3 (KNN-BKZ-xBZ for short), wherein x is larger than or equal to 0 and smaller than or equal to 0.020. The potassium sodium niobate based lead-free piezoelectric material is rich in raw material, low in cost and easy to produce and manufacture, products made from the material are high in piezoelectric property, and the potassium sodium niobate based lead-free piezoelectric material has high practical value, is beneficial for industrial production and significant in economic and social benefits.

Description

technical field [0001] The invention relates to a piezoelectric material, in particular to a potassium sodium niobate-based lead-free piezoelectric material. Background technique [0002] Piezoelectric ceramics are an important functional material that can realize mutual conversion between mechanical energy and electrical energy. Piezoelectric ceramic materials are widely used because of their advantages such as high electromechanical coupling coefficient, low price, almost any shape required, and easy mass production. It is used in high-tech fields such as information, laser, navigation, aerospace and biology. [0003] After the discovery of lead-based piezoelectric ceramics in 1954, it has been in a monopoly position in the entire application field of piezoelectric ceramics because of its excellent performance and low cost. Although lead-based piezoelectric ceramics have excellent performance, their lead oxides (PbO or Pb 3 o 4 ) is about 70%, which will bring serious h...

Claims

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Application Information

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IPC IPC(8): C04B35/495H01L41/187
CPCC04B35/495C04B2235/725C04B2235/3248C04B2235/3272C04B2235/3215C04B2235/3201C04B2235/3298H10N30/8542
Inventor 刘洁冯莎莎王宁张文杰
Owner BEIJING ZHONGKE AOBEI ULTRASONIC TECH RES INST
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