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Low-loss high-curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and preparation method thereof
The invention discloses a low-loss high-curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and a preparation method thereof. The chemical composition of the piezoelectric ceramic is 0.75 Bi < 1.02 > FeO < 3-(0.25-x) > BaTiO < 3-x > CaZrO < 3 > + y% GeO < 2 > + z% MnO < 2 >, wherein x, y and z represent mole fractions, 0.005 < = x < = 0.020, 0.3 < = y < = 1, and 0.5 < = z < = 1.5. By introducing the third component CaZrO3 and adding GeO2 and MnO2, the crystal phase composition and the conductive carrier concentration are regulated and controlled, the microstructure is improved, the loss is reduced, the temperature stability is improved, and the Curie temperature, the depolarization temperature and the piezoelectricity are obviously improved. The lead-free piezoelectric ceramic material provided by the invention is simple in synthesis process and is expected to be applied to preparation of high-temperature piezoelectric sensing devices.
本发明公开了一种低损耗高居里点铁酸铋‑钛酸钡无铅压电陶瓷材料及制备方法。所述压电陶瓷的化学组成为0.75Bi1.02FeO3‑(0.25‑x)BaTiO3‑xCaZrO3+y％GeO2+z％MnO2；其中x、y和z表示摩尔分数，0.005≤x≤0.020，0.3≤y≤1，0.5≤z≤1.5。本发明通过引入第三组元CaZrO3，并添加GeO2和MnO2，调控晶相组成和导电载流子浓度，改善显微结构，降低损耗及改善温度稳定性，使居里温度、退极化温度和压电性均获得明显提高。本发明提供的无铅压电陶瓷材料合成工艺简单，有望应用于高温压电传感器件的制备。
Low-loss high-curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and preparation method thereof
The invention discloses a low-loss high-curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and a preparation method thereof. The chemical composition of the piezoelectric ceramic is 0.75 Bi < 1.02 > FeO < 3-(0.25-x) > BaTiO < 3-x > CaZrO < 3 > + y% GeO < 2 > + z% MnO < 2 >, wherein x, y and z represent mole fractions, 0.005 < = x < = 0.020, 0.3 < = y < = 1, and 0.5 < = z < = 1.5. By introducing the third component CaZrO3 and adding GeO2 and MnO2, the crystal phase composition and the conductive carrier concentration are regulated and controlled, the microstructure is improved, the loss is reduced, the temperature stability is improved, and the Curie temperature, the depolarization temperature and the piezoelectricity are obviously improved. The lead-free piezoelectric ceramic material provided by the invention is simple in synthesis process and is expected to be applied to preparation of high-temperature piezoelectric sensing devices.
本发明公开了一种低损耗高居里点铁酸铋‑钛酸钡无铅压电陶瓷材料及制备方法。所述压电陶瓷的化学组成为0.75Bi1.02FeO3‑(0.25‑x)BaTiO3‑xCaZrO3+y％GeO2+z％MnO2；其中x、y和z表示摩尔分数，0.005≤x≤0.020，0.3≤y≤1，0.5≤z≤1.5。本发明通过引入第三组元CaZrO3，并添加GeO2和MnO2，调控晶相组成和导电载流子浓度，改善显微结构，降低损耗及改善温度稳定性，使居里温度、退极化温度和压电性均获得明显提高。本发明提供的无铅压电陶瓷材料合成工艺简单，有望应用于高温压电传感器件的制备。
Low-loss high-curie-point bismuth ferrite-barium titanate lead-free piezoelectric ceramic material and preparation method thereof
一种低损耗高居里点铁酸铋-钛酸钡无铅压电陶瓷材料及制备方法
HE XINHUA (author) / XU GUOQING (author) / LU ZHENYA (author)
2024-07-05
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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