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BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature and preparation method of BaTiO3-based lead-free piezoelectric ceramic
The invention relates to a piezoelectric ceramic and a preparation method thereof, in particular to a BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature and a preparation method of the BaTiO3-based lead-free piezoelectric ceramic. The invention aims to solve the problems of small electrostrictive strain and high sintering temperature of the existing BaTiO3-based leadless piezoelectric ceramic at room temperature. The chemical formula of the piezoelectric ceramic is Ba < 0.70 > Ca < 0.30 > TiO < 3 + x > mol% MnO < 2 >. The method comprises the following steps: 1, weighing raw material powder according to a stoichiometric ratio; 2, mixing, ball-milling, drying and pressing the raw materials into a to-be-pre-sintered blank; 3, pre-sintering the to-be-pre-sintered green body, crushing, carrying out ball milling again, mixing with a polyvinyl alcohol adhesive, granulating, pressing into a thin cylindrical green body, removing viscosity, sintering into ceramic, and cooling along with a furnace to obtain a ceramic green body; and 4, annealing and polishing the ceramic blank body to obtain the BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature. The method is applied to the field of piezoelectric materials.
一种室温大电致应变的BaTiO3基无铅压电陶瓷及其制备方法，涉及一种压电陶瓷及其制备方法。是要解决现有BaTiO3基无铅压电陶瓷在室温电致应变小和烧结温度高的问题。压电陶瓷的化学式为Ba0.70Ca0.30TiO3+x mol％MnO2。方法：一、按化学计量比称量原料粉末；二、将原料混合、球磨、干燥和压成待预烧胚体；三、将待预烧胚体预烧、粉碎、再次球磨、混合聚乙烯醇粘合剂后造粒、压成薄圆柱形胚体、排粘、烧结成瓷、随炉降温得到陶瓷胚体；四、将陶瓷胚体退火、抛光，即为室温大电致应变的BaTiO3基无铅压电陶瓷。本发明应用于压电材料领域。
BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature and preparation method of BaTiO3-based lead-free piezoelectric ceramic
The invention relates to a piezoelectric ceramic and a preparation method thereof, in particular to a BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature and a preparation method of the BaTiO3-based lead-free piezoelectric ceramic. The invention aims to solve the problems of small electrostrictive strain and high sintering temperature of the existing BaTiO3-based leadless piezoelectric ceramic at room temperature. The chemical formula of the piezoelectric ceramic is Ba < 0.70 > Ca < 0.30 > TiO < 3 + x > mol% MnO < 2 >. The method comprises the following steps: 1, weighing raw material powder according to a stoichiometric ratio; 2, mixing, ball-milling, drying and pressing the raw materials into a to-be-pre-sintered blank; 3, pre-sintering the to-be-pre-sintered green body, crushing, carrying out ball milling again, mixing with a polyvinyl alcohol adhesive, granulating, pressing into a thin cylindrical green body, removing viscosity, sintering into ceramic, and cooling along with a furnace to obtain a ceramic green body; and 4, annealing and polishing the ceramic blank body to obtain the BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature. The method is applied to the field of piezoelectric materials.
一种室温大电致应变的BaTiO3基无铅压电陶瓷及其制备方法，涉及一种压电陶瓷及其制备方法。是要解决现有BaTiO3基无铅压电陶瓷在室温电致应变小和烧结温度高的问题。压电陶瓷的化学式为Ba0.70Ca0.30TiO3+x mol％MnO2。方法：一、按化学计量比称量原料粉末；二、将原料混合、球磨、干燥和压成待预烧胚体；三、将待预烧胚体预烧、粉碎、再次球磨、混合聚乙烯醇粘合剂后造粒、压成薄圆柱形胚体、排粘、烧结成瓷、随炉降温得到陶瓷胚体；四、将陶瓷胚体退火、抛光，即为室温大电致应变的BaTiO3基无铅压电陶瓷。本发明应用于压电材料领域。
BaTiO3-based lead-free piezoelectric ceramic with large electrostrictive strain at room temperature and preparation method of BaTiO3-based lead-free piezoelectric ceramic
一种室温大电致应变的BaTiO3基无铅压电陶瓷及其制备方法
LI CAIXIA (Autor:in) / WANG WANRU (Autor:in) / LIU YIFAN (Autor:in) / WANG ZEYU (Autor:in) / LI JING (Autor:in) / ZHAO YIWEN (Autor:in)
10.06.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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