固相反应法、柠檬酸盐法制备（NaBi）<sub>0.5</sub>TiO<sub>3</sub>陶瓷及性能表征

固相反应法、柠檬酸盐法制备（NaBi）_0.5TiO₃陶瓷及性能表征

摘要: 分别用固相反应法和柠檬酸盐法合成了（NaBi）_0.5TiO₃陶瓷前驱体,并烧制成相应的陶瓷。用激光粒度分析仪、XRD、SEM分别对前驱体和陶瓷的粒度、相组成、显微结构等进行表征,并检测不同烧结温度下的压电常数d₃₃。研究表明,用柠檬酸盐法合成的NBT前驱体所需合成温度低于固相反应法;所制陶瓷具有更高的压电常数d₃₃,在1150℃下烧结,d₃₃可达61.6pc/n。

Abstract: Solid reaction and citrate method were employed to prepare（NaBi）_0.5TiO₃ ceramic powder.The granularity,phases,microstructure and other characters of the ceramic powder and ceramic were investigated by using laser granularity analyse appa-ratus,XRD,SEM and the piezoelectric constant d₃₃ of the ceramics was also detected under different sintering temperatures.The results showed that NBT ceramic prepared by citrate method has lower sintering temperature and the more favorable piezo-electric property than that prepared by solid reaction.When the sintering temperature is 1150℃,the piezoelectric constant d₃₃ can reach 61.6pc/n.