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Multi constituent niobate lead-free piezoelectric ceramics

A lead-free piezoelectric and niobate technology, applied in piezoelectric/electrostrictive/magnetostrictive devices, circuits, electrical components, etc., to achieve good stability and repeatability, excellent piezoelectric Good density effect

Inactive Publication Date: 2007-09-19
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the research on niobate-based lead-free piezoelectric ceramics is still in exploration, so it is the task of the present invention to provide a class of multi-element niobate-based lead-free piezoelectric ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the general formula (1-x) (Li 1-y-z Na y K z )(Nb 1-u-v Ta u Sb v )O 3 +xAg(Sb 1-δ-θ Ta δ Nb θ )O 3 The content of the multi-component niobate-based lead-free piezoelectric ceramics is formulated. When x=0.005, y=0.4701, z=0.4701, u=0, v=0, δ=0, θ=1, the formula for:

[0018] 0.995 (Li 0.0598 Na 0.4701 K 0.4701 )NbO 3 +0.005AgNbO 3

[0019] The electrical properties of the prepared multi-component niobate-based lead-free piezoelectric ceramics are as follows:

[0020] d 33 (pC / N)k p (%)T c (°C)P r (μC / cm 2 ) E c (kV / cm)

[0021] 220 37.0 476 22.4 11.3

Embodiment 2

[0023] According to the general formula (1-x) (Li 1-y-z Na y K z )(Nb 1-u-v Ta u Sb v )O 3 +xAg(Sb 1-δ-θ Ta δ Nb θ )O 3 The content of the multi-component niobate-based lead-free piezoelectric ceramics is formulated. When x=0.01, y=0.4672, z=0.4778, u=0, v=0, δ=0, θ=1, the formula for:

[0024] 0.99 (Li 0.055 Na 0.4672 K 0.4778 )NbO 3 +0.01AgNbO 3

[0025] The electrical properties of the prepared multi-component niobate-based lead-free piezoelectric ceramics are as follows:

[0026] d 33 (pC / N)k p (%)T c (°C)P r (μC / cm 2 ) E c (kV / cm)

[0027] 176 37.0 479 22.9 10.5

Embodiment 3

[0029] According to the general formula (1-x) (Li 1-y-z Na y K z )(Nb 1-u-v Ta u Sb v )O 3 +xAg(Sb 1-δ-θ Ta δ Nb θ )O 3 The content of the multi-component niobate-based lead-free piezoelectric ceramics is formulated. When x=0.015, y=0.4725, z=0.4725, u=0, v=0, δ=0, θ=0, the formula for:

[0030] 0.985 (Li 0.055 Na 0.4725 K 0.4725 )NbO 3 +0.015AgSbO 3

[0031] The electrical properties of the prepared multi-component niobate-based lead-free piezoelectric ceramics are as follows:

[0032] d 33 (pC / N)k p (%)T c (°C)P r (μC / cm 2 ) E c (kV / cm)

[0033] 165 32.6 438 30.3 13.8

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Abstract

The invention discloses a piezoelectricity ceram of multicomponent niobate base without lead belonging to the field of environmental coordination piezoelectricity ceram, which is represented by the general formula (1-x)(Li1-y-zNayKz)(Nb1-u-vTauSbv)O3+xAg(Sb1-Delta-ThetaTaDeltaNbTheta)O3 or adding aMAlphaOBeta(wt%), wherein 0 C04B 35 / 495 C04B 35 / 622 H01L 41 / 187 0 7 1 2007 / 4 / 20 101037332 2007 / 9 / 19 000000000 Sichuan University 610065 Xiao Dingquan Wang Yuanyu Wu Jiagang Zhu Jianguo Yu Ping Wu Lang liushuang lan yanli hua 51202 The Patent Agency of Chengdou University of Science and Technology Mozi Bridge, the City of Chengdou, Sichuan Province 610065

Description

technical field [0001] The invention relates to the technical field of preparation of functional ceramics, in particular to a class of multi-element niobate-based lead-free piezoelectric ceramics with perovskite structure and environment coordination. Background technique [0002] Since the discovery of the piezoelectricity of barium titanate ceramics in the mid-1940s, the research and development of piezoelectric ceramics has been very active. As an important class of high-tech new materials with fierce international competition, piezoelectric ceramics and piezoelectric ceramics Components made of electric ceramics have been widely used in industry, especially in the field of information industry. However, the piezoelectric ceramics currently used on a large scale are mainly lead-based piezoelectric ceramics, lead-based binary systems represented by lead zirconate titanate and lead-based piezoelectric ceramics with lead zirconate titanate as the base material and the third ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/622H01L41/187H10N30/853
Inventor 肖定全王媛玉吴家刚朱建国余萍吴浪
Owner SICHUAN UNIV
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