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Potassium-sodium niobate-based lead-free piezoelectric ceramic powder and preparation method of lead-free piezoelectric ceramic
The invention relates to the technical field of piezoelectric ceramics, and discloses potassium-sodium niobate-based lead-free piezoelectric ceramic powder and a preparation method of lead-free piezoelectric ceramics. The preparation method of the piezoelectric ceramic powder comprises the following steps: preparing a clear and transparent solution I from alcohol-soluble potassium salt, alcohol-soluble sodium salt and a polar organic solvent; niobium salt and citric acid are dissolved in a solvent, the pH is adjusted to be not higher than 5, and a clear and transparent solution II is prepared; the molar ratio of niobium element to citric acid in the niobium salt is 1: (3-4); mixing the clarified and transparent solution I and the clarified and transparent solution II to prepare a clarified and transparent precursor solution, atomizing, controlling the flow ratio of atomized gas to the precursor solution to be (1.2-1.3) L/min: 1mL/min, generating ceramic powder in a flame field at the temperature of 800 DEG C or above, and annealing. According to the preparation method, the preparation time can be greatly shortened, high preparation efficiency can be achieved, the obtained powder is good in performance, and the piezoelectric ceramic prepared from the powder has good piezoelectric performance.
本发明涉及压电陶瓷技术领域，公开了一种铌酸钾钠基无铅压电陶瓷粉体及无铅压电陶瓷的制备方法。该压电陶瓷粉体的制备方法包括以下步骤：将醇溶性钾盐、醇溶性钠盐和极性有机溶剂制成澄清透明溶液I；将铌盐和柠檬酸溶解到溶剂中，调节pH至不高于5，制成澄清透明溶液II；铌盐中铌元素与柠檬酸的摩尔比为1:3~4；将澄清透明溶液I和II混合制成澄清透明的前驱体溶液后进行雾化，控制雾化气与前驱体溶液的流量比为1.2~1.3L/min:1mL/min，而后在800℃以上的火焰场中生成陶瓷粉体，退火。该制备方法能大大缩短制备时间，能够实现较高的制备效率，且获得的粉体性能较好，用该粉体制备的压电陶瓷具有较好的压电性能。
Potassium-sodium niobate-based lead-free piezoelectric ceramic powder and preparation method of lead-free piezoelectric ceramic
The invention relates to the technical field of piezoelectric ceramics, and discloses potassium-sodium niobate-based lead-free piezoelectric ceramic powder and a preparation method of lead-free piezoelectric ceramics. The preparation method of the piezoelectric ceramic powder comprises the following steps: preparing a clear and transparent solution I from alcohol-soluble potassium salt, alcohol-soluble sodium salt and a polar organic solvent; niobium salt and citric acid are dissolved in a solvent, the pH is adjusted to be not higher than 5, and a clear and transparent solution II is prepared; the molar ratio of niobium element to citric acid in the niobium salt is 1: (3-4); mixing the clarified and transparent solution I and the clarified and transparent solution II to prepare a clarified and transparent precursor solution, atomizing, controlling the flow ratio of atomized gas to the precursor solution to be (1.2-1.3) L/min: 1mL/min, generating ceramic powder in a flame field at the temperature of 800 DEG C or above, and annealing. According to the preparation method, the preparation time can be greatly shortened, high preparation efficiency can be achieved, the obtained powder is good in performance, and the piezoelectric ceramic prepared from the powder has good piezoelectric performance.
本发明涉及压电陶瓷技术领域，公开了一种铌酸钾钠基无铅压电陶瓷粉体及无铅压电陶瓷的制备方法。该压电陶瓷粉体的制备方法包括以下步骤：将醇溶性钾盐、醇溶性钠盐和极性有机溶剂制成澄清透明溶液I；将铌盐和柠檬酸溶解到溶剂中，调节pH至不高于5，制成澄清透明溶液II；铌盐中铌元素与柠檬酸的摩尔比为1:3~4；将澄清透明溶液I和II混合制成澄清透明的前驱体溶液后进行雾化，控制雾化气与前驱体溶液的流量比为1.2~1.3L/min:1mL/min，而后在800℃以上的火焰场中生成陶瓷粉体，退火。该制备方法能大大缩短制备时间，能够实现较高的制备效率，且获得的粉体性能较好，用该粉体制备的压电陶瓷具有较好的压电性能。
Potassium-sodium niobate-based lead-free piezoelectric ceramic powder and preparation method of lead-free piezoelectric ceramic
一种铌酸钾钠基无铅压电陶瓷粉体及无铅压电陶瓷的制备方法
GONG WEN (Autor:in) / WANG KE (Autor:in) / WU CHAOFENG (Autor:in) / YAO FANGZHOU (Autor:in) / SHEN BINGLIN (Autor:in) / JU MIN (Autor:in)
01.08.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of potassium-sodium-niobate-based lead-free piezoelectric ceramic
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