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Preparation method of sodium bismuth titanate high-temperature piezoelectric ceramic
The invention discloses a preparation method of a sodium bismuth titanate high-temperature piezoelectric ceramic, which is specifically implemented according to the following steps: weighing Bi2O3, Na2CO3, TiO2 and Fe2O3 with the purity of more than 98.5% according to a stoichiometric ratio, so that the molar ratio of BNT to BiFeO3 is 70: 30-40: 60; adding the components in the step 1 into a planetary ball mill, carrying out ball milling by using alcohol as a medium, taking out after ball milling and mixing, and then drying the mixed slurry to obtain BNT powder doped with BiFeO3; pressing the powder into a wafer through an isostatic pressing technology; sintering the wafer to obtain a ceramic wafer; grinding and polishing the ceramic wafer, and then washing the ceramic wafer with absolute ethyl alcohol; and putting the washed ceramic wafer into a quenching furnace for quenching treatment, and then carrying out air cooling to room temperature to obtain the sodium bismuth titanate high-temperature piezoelectric ceramic. The sodium bismuth titanate high-temperature piezoelectric ceramic prepared by the preparation method disclosed by the invention is excellent in piezoelectric property and high-temperature piezoelectric property.
本发明公开了一种钛酸铋钠高温压电陶瓷的制备方法，具体按以下步骤实施：将纯度大于98.5％的Bi2O3，Na2CO3，TiO2和Fe2O3按照化学计量比称量，使得BNT与BiFeO3的摩尔比为70:30～40:60；将步骤1中的各组分加入行星球磨机中，并用酒精为介质进行球磨，球磨混合后取出，然后将混合后的浆料干燥得到掺杂BiFeO3的BNT粉体；将粉体通过等静压技术压制成圆片；将圆片烧结制得陶瓷片；将陶瓷片打磨、抛光后用无水乙醇洗涤；将洗涤后的陶瓷片置于淬火炉中进行淬火处理，随后进行风冷至室温，即得钛酸铋钠高温压电陶瓷。本发明制备的钛酸铋钠高温压电陶瓷压电性能和高温压电性能优异。
Preparation method of sodium bismuth titanate high-temperature piezoelectric ceramic
The invention discloses a preparation method of a sodium bismuth titanate high-temperature piezoelectric ceramic, which is specifically implemented according to the following steps: weighing Bi2O3, Na2CO3, TiO2 and Fe2O3 with the purity of more than 98.5% according to a stoichiometric ratio, so that the molar ratio of BNT to BiFeO3 is 70: 30-40: 60; adding the components in the step 1 into a planetary ball mill, carrying out ball milling by using alcohol as a medium, taking out after ball milling and mixing, and then drying the mixed slurry to obtain BNT powder doped with BiFeO3; pressing the powder into a wafer through an isostatic pressing technology; sintering the wafer to obtain a ceramic wafer; grinding and polishing the ceramic wafer, and then washing the ceramic wafer with absolute ethyl alcohol; and putting the washed ceramic wafer into a quenching furnace for quenching treatment, and then carrying out air cooling to room temperature to obtain the sodium bismuth titanate high-temperature piezoelectric ceramic. The sodium bismuth titanate high-temperature piezoelectric ceramic prepared by the preparation method disclosed by the invention is excellent in piezoelectric property and high-temperature piezoelectric property.
本发明公开了一种钛酸铋钠高温压电陶瓷的制备方法，具体按以下步骤实施：将纯度大于98.5％的Bi2O3，Na2CO3，TiO2和Fe2O3按照化学计量比称量，使得BNT与BiFeO3的摩尔比为70:30～40:60；将步骤1中的各组分加入行星球磨机中，并用酒精为介质进行球磨，球磨混合后取出，然后将混合后的浆料干燥得到掺杂BiFeO3的BNT粉体；将粉体通过等静压技术压制成圆片；将圆片烧结制得陶瓷片；将陶瓷片打磨、抛光后用无水乙醇洗涤；将洗涤后的陶瓷片置于淬火炉中进行淬火处理，随后进行风冷至室温，即得钛酸铋钠高温压电陶瓷。本发明制备的钛酸铋钠高温压电陶瓷压电性能和高温压电性能优异。
Preparation method of sodium bismuth titanate high-temperature piezoelectric ceramic
一种钛酸铋钠高温压电陶瓷的制备方法
REN PENGRONG (Autor:in) / WANG YIKE (Autor:in)
26.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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