锆钛酸铅压电陶瓷低温烧结及其性能研究  

Low-Temperature Sintering and Properties of Lead Zirconate Titanate Piezoelectric Ceramics

作　　者：钟超 赵连仲 李江 袁晰[1] 张斗 ZHONG Chao;ZHAO Lianzhong;LI Jiang;YUAN Xi;ZHANG Dou(College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China;Powder Metallurgy Research Institut,State Key Lab.of Powder Metallurgy,Central South University,Changsha 410083,China)

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]中南大学粉末冶金研究院粉末冶金国家重点实验室,湖南长沙410083

出　　处：《压电与声光》2024年第6期902-909,共8页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金项目(52102150,52172134);湖南省青年科技人才项目(2022RC1029);中南大学2023年度前沿交叉项目(2023QYJC036)。

摘　　要：为降低锆钛酸铅(PZT)压电陶瓷的烧结温度,以Li_(2)CO_(3)-Bi_(2)O_(3)作为复合烧结助剂,采用固相反应法制备了PZT基压电陶瓷粉,系统地研究了烧结助剂Li_(2)CO_(3)-Bi_(2)O_(3)的掺杂量及烧结温度对PZT压电陶瓷相结构、微观形貌及电学性能的影响。在Li_(2)CO_(3)-Bi_(2)O_(3)掺杂量(质量分数)为1.3%时,PZT压电陶瓷的烧结温度可由1250℃降低至900~950℃,具有较宽的烧结温度范围,同时陶瓷表现出优异的电学性能。烧结温度为900℃时,陶瓷的压电应变常数d_(33)达到最大值538 pC/N;烧结温度为950℃时,陶瓷的压电电压常数g_(33)达到最大值43.27 mVm/N。同时实现了陶瓷-电极低温共烧,共烧后的陶瓷片d_(33)可达530 pC/N。To reduce the sintering temperature of lead zirconate titanate(PZT)piezoelectric ceramics,PZT-based piezoelectric ceramics were fabricated via a solid-state reaction with Li_(2)CO_(3)and Bi_(2)O_(3)as composite sintering aids.The effects of the doping amount of Li_(2)CO_(3)-Bi_(2)O_(3)and the sintering temperature on the phase structure,microstructure,and electrical properties of PZT piezoelectric ceramics were comprehensively investigated.When the doping amount of Li_(2)CO_(3)-Bi_(2)O_(3)is 1.3 wt%,the sintering temperature of PZT piezoelectric ceramics can be decreased from 1250℃to 900-950℃,which is a wide sintering temperature range,and the ceramics exhibit outstanding electrical properties.The piezoelectric strain constant d_(33)can reach 538 pC/N when the sintering temperature is 900℃,and the piezoelectric voltage constant g_(33)reaches a maximum of 43.27 mVm/N when the sintering temperature is 950℃.Simultaneously,low-temperature co-firing of the ceramics and electrodes is accomplished,and the d_(33)of the ceramic chip after co-firing reaches 530 pC/N.

关 键 词：压电陶瓷 锆钛酸铅(PZT) 低温共烧 烧结助剂 烧结温度 

分 类 号：TN384[电子电信—物理电子学] TB34[一般工业技术—材料科学与工程]