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A-position and B-position co-doped sodium bismuth titanate-based leadless piezoelectric ceramic and preparation method thereof
The invention discloses A-site and B-site co-doped sodium bismuth titanate-based leadless piezoelectric ceramic and a preparation method thereof. According to the preparation method adopted by the invention, lanthanum tantalate is doped in a sodium bismuth titanate ceramic matrix, LaTaO4 is used for doping, La < 3 + > enters a perovskite structure A site, Ta enters a perovskite structure B site, ferroelectric-nonpolar phase change is induced, meanwhile, crystal structure distortion is increased, and the A and B site co-doped sodium bismuth titanate-based leadless piezoelectric ceramic is obtained, so that super-large electrostrictive strain performance is obtained; the piezoelectric actuator is very suitable for piezoelectric actuators. The preparation method disclosed by the invention is simple in steps, stable in product performance and suitable for batch production.
本发明公开了一种A、B位共掺钛酸铋钠基无铅压电陶瓷及其制备方法。本发明采用的制备方法，其在钛酸铋钠陶瓷基体中掺杂钽酸镧，利用LaTaO4掺杂，使La3+进入钙钛矿结构A位，Ta进入钙钛矿结构B位，诱导铁电‑非极性相变，同时增加晶体结构畸变，获得A、B位共掺钛酸铋钠基无铅压电陶瓷，从而获得超大电致应变性能，非常适合应用于压电致动器。本发明的制备方法，步骤简单，产品性能稳定，适合批量生产。
A-position and B-position co-doped sodium bismuth titanate-based leadless piezoelectric ceramic and preparation method thereof
The invention discloses A-site and B-site co-doped sodium bismuth titanate-based leadless piezoelectric ceramic and a preparation method thereof. According to the preparation method adopted by the invention, lanthanum tantalate is doped in a sodium bismuth titanate ceramic matrix, LaTaO4 is used for doping, La < 3 + > enters a perovskite structure A site, Ta enters a perovskite structure B site, ferroelectric-nonpolar phase change is induced, meanwhile, crystal structure distortion is increased, and the A and B site co-doped sodium bismuth titanate-based leadless piezoelectric ceramic is obtained, so that super-large electrostrictive strain performance is obtained; the piezoelectric actuator is very suitable for piezoelectric actuators. The preparation method disclosed by the invention is simple in steps, stable in product performance and suitable for batch production.
本发明公开了一种A、B位共掺钛酸铋钠基无铅压电陶瓷及其制备方法。本发明采用的制备方法，其在钛酸铋钠陶瓷基体中掺杂钽酸镧，利用LaTaO4掺杂，使La3+进入钙钛矿结构A位，Ta进入钙钛矿结构B位，诱导铁电‑非极性相变，同时增加晶体结构畸变，获得A、B位共掺钛酸铋钠基无铅压电陶瓷，从而获得超大电致应变性能，非常适合应用于压电致动器。本发明的制备方法，步骤简单，产品性能稳定，适合批量生产。
A-position and B-position co-doped sodium bismuth titanate-based leadless piezoelectric ceramic and preparation method thereof
一种A、B位共掺钛酸铋钠基无铅压电陶瓷及其制备方法
WANG YIFAN (author) / SUN MING (author) / CHEN XIAOGANG (author) / ZENG MINGQUAN (author) / HE QIANG (author) / TAN HUA (author) / ZHANG SHICHENG (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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