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Potassium-sodium niobate-based leadless piezoelectric ceramic sheet, preparation method and application
The invention discloses a potassium-sodium niobate-based lead-free piezoelectric ceramic sheet, a preparation method and application, relates to the technical field of ceramic materials, and aims to solve the problems that an existing medium piezoelectric ceramic material is required to be lead-free and the lead-free ceramic performance is relatively poor. The preparation method comprises the following steps: weighing the raw materials according to a theoretical composition ratio; preparing the raw materials into ceramic pre-sintered powder; carrying out ball milling on the pre-sintered ceramic powder and then drying; adding a solvent, a dispersing agent and a defoaming agent into the dried ceramic powder, and fully mixing; carrying out secondary ball milling, and then carrying out tape casting; cutting the film sheet after the casting into small film sheets; punching the film sheet; and glue discharging and sintering are carried out, such that the potassium sodium niobate-based leadless piezoelectric ceramic sheet is prepared. The lead-free potassium sodium niobate (KNN)-based ceramic sheet is prepared by a tape casting method, and the prepared potassium sodium niobate-based lead-free piezoelectric ceramic sheet is prepared into the buzzer, so that the lead-free environmental protection requirement is met, and an important role is played in practicability of a KNN-based ceramic material.
本发明公开了一种铌酸钾钠基无铅压电陶瓷薄片、制备方法及应用，涉及陶瓷材料技术领域，针对现有中压电陶瓷材料要求无铅化，无铅陶瓷性能较差的问题。本发明制备方法包括如下步骤：按照理论组成配比称重原料；将原料制成陶瓷预烧粉体；将预烧后的陶瓷粉体进行球磨后烘干；在烘干后的陶瓷粉体中加入溶剂、分散剂、除泡剂充分混合；进行二次球磨后流延；将流延后的膜片切割成小膜片；对膜片进行冲片；进行排胶，烧结，制得铌酸钾钠基无铅压电陶瓷薄片。本发明通过流延法制备无铅铌酸钾钠(KNN)基陶瓷膜片，并将制备的铌酸钾钠基无铅压电陶瓷薄片制备成蜂鸣器，满足了无铅化的环境保护要求，为KNN基陶瓷材料实用化起到重要作用。
Potassium-sodium niobate-based leadless piezoelectric ceramic sheet, preparation method and application
The invention discloses a potassium-sodium niobate-based lead-free piezoelectric ceramic sheet, a preparation method and application, relates to the technical field of ceramic materials, and aims to solve the problems that an existing medium piezoelectric ceramic material is required to be lead-free and the lead-free ceramic performance is relatively poor. The preparation method comprises the following steps: weighing the raw materials according to a theoretical composition ratio; preparing the raw materials into ceramic pre-sintered powder; carrying out ball milling on the pre-sintered ceramic powder and then drying; adding a solvent, a dispersing agent and a defoaming agent into the dried ceramic powder, and fully mixing; carrying out secondary ball milling, and then carrying out tape casting; cutting the film sheet after the casting into small film sheets; punching the film sheet; and glue discharging and sintering are carried out, such that the potassium sodium niobate-based leadless piezoelectric ceramic sheet is prepared. The lead-free potassium sodium niobate (KNN)-based ceramic sheet is prepared by a tape casting method, and the prepared potassium sodium niobate-based lead-free piezoelectric ceramic sheet is prepared into the buzzer, so that the lead-free environmental protection requirement is met, and an important role is played in practicability of a KNN-based ceramic material.
本发明公开了一种铌酸钾钠基无铅压电陶瓷薄片、制备方法及应用，涉及陶瓷材料技术领域，针对现有中压电陶瓷材料要求无铅化，无铅陶瓷性能较差的问题。本发明制备方法包括如下步骤：按照理论组成配比称重原料；将原料制成陶瓷预烧粉体；将预烧后的陶瓷粉体进行球磨后烘干；在烘干后的陶瓷粉体中加入溶剂、分散剂、除泡剂充分混合；进行二次球磨后流延；将流延后的膜片切割成小膜片；对膜片进行冲片；进行排胶，烧结，制得铌酸钾钠基无铅压电陶瓷薄片。本发明通过流延法制备无铅铌酸钾钠(KNN)基陶瓷膜片，并将制备的铌酸钾钠基无铅压电陶瓷薄片制备成蜂鸣器，满足了无铅化的环境保护要求，为KNN基陶瓷材料实用化起到重要作用。
Potassium-sodium niobate-based leadless piezoelectric ceramic sheet, preparation method and application
一种铌酸钾钠基无铅压电陶瓷薄片、制备方法及应用
ZHU HUIXIANG (Autor:in) / ZHANG DUYI (Autor:in) / DAI KAIBIN (Autor:in)
23.09.2022
Patent
Elektronische Ressource
Chinesisch
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