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Sodium niobate barium-bismuth-potassium titanate lead-free piezoelectric ceramic composition

A sodium niobate barium titanate and lead-free piezoelectric technology, which is applied in the field of lead-free piezoelectric ceramic composition of sodium niobate barium bismuth titanate series, can solve the problems of less research and achieve stable preparation process, ferroelectric The effect of strong resistance 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 studies on lead-free ferroelectric piezoelectric ceramic materials

Method used

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  • Sodium niobate barium-bismuth-potassium titanate lead-free piezoelectric ceramic composition
  • Sodium niobate barium-bismuth-potassium titanate lead-free piezoelectric ceramic composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Formula: 0.825NaNbO 3 -0.175Ba 0.6 (Bi 0.5 K 0.5 ) 0.4 TiO 3

[0021] performance:

[0022] d 33 (pC / N) ε r k p (%) Q m tanδ(%)

[0023] 108 1079 17.4 326 2.53

Embodiment 2

[0025] Formula: 0.825NaNbO 3 -0.175Ba 0.6 (Bi 0.5 K 0.5 ) 0.4 TiO 3 (99mol%)+MnO 2 (1mol%)

[0026] performance:

[0027] d 33 (pC / N) ε r k p (%) Q m tanδ(%)

[0028] 131 1470 17.5 391 2.13

Embodiment 3

[0030] Formula: 0.825NaNbO 3 -0.175Ba 0.6 (Bi 0.5 K 0.5 ) 0.4 TiO 3 (99.5mol%)+MnO 2 (0.5mol%)

[0031] performance:

[0032] d 33 (pC / N) ε r k p (%) Q m tanδ(%)

[0033] 128 1337 18.4 260 1.60

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Abstract

The invention provides a novel sodium niobate barium-bismuth-potassium titanate lead-free piezoelectric ceramic composition. The composition comprises perovskite antiferroelectric NaNbO3 and strong ferroelectric Ba1-y(Bi0.5K0.5)yTiO3. A general formula of the composition is (1-x)NaNbO3-xBa1-y(Bi0.5K0.5)yTiO3, wherein x and y in the formula satisfy the following equations: 0.025<=x<=0.25 and 0

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495
Inventor 赁敦敏郑荞佶樊喜明孙海玲
Owner SICHUAN NORMAL UNIVERSITY
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