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Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
The invention provides a potassium-sodium niobate-based leadless piezoelectric ceramic and a preparation method thereof, and the preparation method comprises the following steps: sequentially carrying out primary presintering and secondary presintering on a mixture containing inorganic acid salt and metal oxide to obtain ceramic powder; wherein the temperature of the primary presintering is lower than that of the secondary presintering, the inorganic acid salt comprises inorganic acid salt of at least one of Na, K and Li, and the metal oxide comprises metal oxide of at least one of Nb, Ta and Sb; performing hot pressed sintering treatment on the ceramic powder in an inert atmosphere, and then performing annealing treatment in an oxygen-containing gas to obtain the piezoelectric ceramic, and the preparation method can improve the mechanical quality factor and the temperature stability of the piezoelectric ceramic.
本发明提供一种铌酸钾钠基无铅压电陶瓷及其制备方法，制备方法包括以下步骤：将包含无机酸盐和金属氧化物的混合物依次进行一次预烧和二次预烧，得到陶瓷粉体；其中，所述一次预烧的温度低于二次预烧的温度，所述无机酸盐包括Na、K、Li中的至少一种的无机酸盐，所述金属氧化物包括Nb、Ta、Sb中的至少一种的金属氧化物；使所述陶瓷粉体在惰性气氛下进行热压烧结处理后，再在含氧气体下进行退火处理，得到压电陶瓷，该制备方法能够提高压电陶瓷的机械品质因数及其温度稳定性。
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
The invention provides a potassium-sodium niobate-based leadless piezoelectric ceramic and a preparation method thereof, and the preparation method comprises the following steps: sequentially carrying out primary presintering and secondary presintering on a mixture containing inorganic acid salt and metal oxide to obtain ceramic powder; wherein the temperature of the primary presintering is lower than that of the secondary presintering, the inorganic acid salt comprises inorganic acid salt of at least one of Na, K and Li, and the metal oxide comprises metal oxide of at least one of Nb, Ta and Sb; performing hot pressed sintering treatment on the ceramic powder in an inert atmosphere, and then performing annealing treatment in an oxygen-containing gas to obtain the piezoelectric ceramic, and the preparation method can improve the mechanical quality factor and the temperature stability of the piezoelectric ceramic.
本发明提供一种铌酸钾钠基无铅压电陶瓷及其制备方法，制备方法包括以下步骤：将包含无机酸盐和金属氧化物的混合物依次进行一次预烧和二次预烧，得到陶瓷粉体；其中，所述一次预烧的温度低于二次预烧的温度，所述无机酸盐包括Na、K、Li中的至少一种的无机酸盐，所述金属氧化物包括Nb、Ta、Sb中的至少一种的金属氧化物；使所述陶瓷粉体在惰性气氛下进行热压烧结处理后，再在含氧气体下进行退火处理，得到压电陶瓷，该制备方法能够提高压电陶瓷的机械品质因数及其温度稳定性。
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
铌酸钾钠基无铅压电陶瓷及其制备方法
WANG KE (Autor:in) / LIU YIXUAN (Autor:in) / LI JINGFENG (Autor:in) / CHEN CHUAN (Autor:in) / WANG YAN (Autor:in)
05.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2021
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
| Europäisches Patentamt | 2022
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
| Europäisches Patentamt | 2022
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
| Europäisches Patentamt | 2021
Potassium-sodium niobate-based leadless piezoelectric ceramic and preparation method thereof
| Europäisches Patentamt | 2024