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Sodium columbate barium calcium zirconate titanate system leadless piezoelectric ceramic composition

A technology of barium calcium zirconate titanate and ceramic composition, which is applied in the field of lead-free piezoelectric ceramic composition of sodium niobate barium calcium zirconate titanate to achieve excellent piezoelectric performance, stable preparation process and excellent piezoelectric performance

Inactive Publication Date: 2012-06-27
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, compared to the above four types of lead-free piezoelectric ceramics, regarding NaNbO 3 There are very few reports on lead-free ferroelectric piezoelectric ceramic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Formulation: 0.95NaNbO 3 -0.05Ba 0.85 Ca 0.15 (Ti 0.90 Zr 0.10 )O 3

[0019] performance:

[0020] d 33 (pC / N) ε r k p (%)

[0021] 50 213 16.6

Embodiment 2

[0023] Formulation: 0.90NaNbO 3 -0.10Ba 0.85 Ca 0.15 (Ti 0.90 Zr 0.10 )O 3

[0024] performance:

[0025] d 33 (pC / N) ε r k p (%)

[0026] 86 313 22.2

Embodiment 3

[0028] Formulation: 0.85NaNbO 3 -0.15Ba 0.85 Ca 0.15 (Ti 0.90 Zr 0.10 )O 3

[0029] performance:

[0030] d 33 (pC / N) ε r k p (%)

[0031] 99 1133 21.5

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PUM

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Abstract

A novel sodium columbate barium calcium zirconate titanate system leadless piezoelectric ceramic composition comprises a perovskite antiferroelectric NaNbO3 and a strong ferroelectric Ba1-yCay(Ti1-zZrz)O3; and a general formula of the composition is expressed as (1-x)NaNbO3-xBa1-yCay(Ti1-zZrz)O3, wherein x, y and z satisfy the relations of: 0.025<=x<=0.25, 0

Description

technical field [0001] The invention belongs to the field of perovskite structure piezoelectric ceramics, and relates to a novel multi-element niobate lead-free piezoelectric ceramic composition, in particular to a sodium niobate zirconate barium calcium titanate lead-free piezoelectric ceramic composition things. Background technique [0002] Since the mid-1940s, the piezoelectricity of barium titanate ceramics was discovered, especially lead zirconate titanate Pb(Ti,Zr)O with excellent piezoelectric properties and high Curie temperature. 3 After the successful development of ceramics, the structural feature is ABO 3 The research and development of lead-based perovskite piezoelectric ceramics is very active. Piezoelectric ceramics and piezoelectric ceramic devices have been widely used in industry, especially in the field of information industry. lead zirconate titanate (Pb(Ti,Zr)O 3 ) as the representative lead-based binary system and lead zirconate titanate (Pb(Ti,Zr)O...

Claims

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Application Information

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IPC IPC(8): C04B35/495
Inventor 郑荞佶赁敦敏徐成刚
Owner SICHUAN NORMAL UNIVERSITY