Sodium bismuth titanate lead-free piezoelectric composite thick film for high-frequency ultrasonic transducer and preparation method thereof
An ultrasonic transducer, lead-free piezoelectric technology, applied in the direction of material selection for piezoelectric devices or electrostrictive devices, manufacturing/assembly of piezoelectric/electrostrictive devices, device material selection, etc., can solve High coercive field, good potassium sodium niobate ceramic body, difficult to prepare compactness and other problems
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Embodiment 1
[0033] (1), first according to Bi 0.5 Na 0.5 TiO 3 The stoichiometric ratio, the excess 2% mole of bismuth nitrate pentahydrate was dissolved in ethylene glycol methyl ether, magnetically stirred at room temperature for 30 minutes to obtain a bismuth nitrate solution; the excess 10% mole of anhydrous sodium acetate was dissolved in ethylene glycol In methyl ether, add glacial acetic acid dropwise as a catalyst at the same time, and stir magnetically at room temperature for 30 minutes to obtain a sodium acetate solution; dissolve tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 in ethylene glycol methyl ether, and Stir magnetically for 40 minutes to obtain a mixed solution of tetra-n-butyl titanate; then add the bismuth nitrate solution and sodium acetate solution dropwise to the mixed solution of tetra-n-butyl titanate, and stir magnetically at a constant temperature at 80°C for 1 hour, and then Cool naturally to room temperature to finally obtain a clear b...
Embodiment 2
[0039] (1), according to Bi 0.5 Na 0.5 TiO 3The stoichiometric ratio, the excess 2% mole of bismuth nitrate pentahydrate was dissolved in ethylene glycol methyl ether, magnetically stirred at room temperature for 30 minutes to obtain a bismuth nitrate solution; the excess 10% mole of anhydrous sodium acetate was dissolved in ethylene glycol In methyl ether, add glacial acetic acid dropwise as a catalyst at the same time, and stir magnetically at room temperature for 30 minutes to obtain a sodium acetate solution; dissolve tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 in ethylene glycol methyl ether, and Stir magnetically for 40 minutes to obtain a mixed solution of tetra-n-butyl titanate; then add the bismuth nitrate solution and sodium acetate solution dropwise to the mixed solution of tetra-n-butyl titanate, and stir magnetically at a constant temperature at 80°C for 1 hour, and then Cool naturally to room temperature to finally obtain a clear bismuth ...
Embodiment 3
[0045] (1), according to Bi 0.5 Na 0.5 TiO 3 The stoichiometric ratio, the excess 2% mole of bismuth nitrate pentahydrate was dissolved in ethylene glycol methyl ether, magnetically stirred at room temperature for 30 minutes to obtain a bismuth nitrate solution; the excess 10% mole of anhydrous sodium acetate was dissolved in ethylene glycol In methyl ether, add glacial acetic acid dropwise as a catalyst at the same time, and stir magnetically at room temperature for 30 minutes to obtain a sodium acetate solution; dissolve tetra-n-butyl titanate and acetylacetone with a molar ratio of 1:2 in ethylene glycol methyl ether, and Stir magnetically for 40 minutes to obtain a mixed solution of tetra-n-butyl titanate; then add the bismuth nitrate solution and sodium acetate solution dropwise to the mixed solution of tetra-n-butyl titanate, and stir magnetically at a constant temperature at 80°C for 1 hour, and then Cool naturally to room temperature to finally obtain a clear bismuth...
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Abstract
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