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Rare-earth-doped potassium-sodium-niobate-based leadless piezoelectric ceramic for power type piezoelectric element and preparation process thereof
The invention provides a rare-earth-doped potassium-sodium-niobate-based leadless piezoelectric ceramic for a power type piezoelectric element and a preparation process thereof. Elements such as lithium, bismuth and hafnium are doped for phase boundary regulation and control, so that the material forms a plurality of piezoelectric phase coexistence states near the room temperature, the piezoelectric domain is activated, and the piezoelectric property of the material is enhanced; and meanwhile, the rare earth element doping is combined, so that the material loss is reduced, and the performance requirement of the power type piezoelectric element is met.
本发明提供一种用于功率型压电元件的稀土掺杂铌酸钾钠基无铅压电陶瓷及其制备工艺，采用锂、铋、铪等元素掺杂进行相界调控，使材料在室温附近形成多个压电相共存状态，活化压电畴，强化材料压电性能，同时结合稀土元素掺杂，降低材料损耗，使之满足于功率型压电元件的性能要求。
Rare-earth-doped potassium-sodium-niobate-based leadless piezoelectric ceramic for power type piezoelectric element and preparation process thereof
The invention provides a rare-earth-doped potassium-sodium-niobate-based leadless piezoelectric ceramic for a power type piezoelectric element and a preparation process thereof. Elements such as lithium, bismuth and hafnium are doped for phase boundary regulation and control, so that the material forms a plurality of piezoelectric phase coexistence states near the room temperature, the piezoelectric domain is activated, and the piezoelectric property of the material is enhanced; and meanwhile, the rare earth element doping is combined, so that the material loss is reduced, and the performance requirement of the power type piezoelectric element is met.
本发明提供一种用于功率型压电元件的稀土掺杂铌酸钾钠基无铅压电陶瓷及其制备工艺，采用锂、铋、铪等元素掺杂进行相界调控，使材料在室温附近形成多个压电相共存状态，活化压电畴，强化材料压电性能，同时结合稀土元素掺杂，降低材料损耗，使之满足于功率型压电元件的性能要求。
Rare-earth-doped potassium-sodium-niobate-based leadless piezoelectric ceramic for power type piezoelectric element and preparation process thereof
一种用于功率型压电元件的稀土掺杂铌酸钾钠基无铅压电陶瓷及其制备工艺
GONG WEN (author) / WU CHAOFENG (author)
2021-11-09
Patent
Electronic Resource
Chinese
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