ZnO亚微球添加对放电等离子烧结PZT陶瓷结构和性能的影响  

Effect of ZnO submicron spheres addition on structure and properties of PZT ceramics prepared by spark plasma sintering

作　　者：张志伟 刘志阳 秦雷[1] 梁立兴 ZHANG Zhiwei;LIU Zhiyang;QIN Lei;LIANG Lixing(Beijing Key Laboratory for Sensors,Beijing Information Science&Technology University,Beijing 100101,China;Key Laboratory of Intelligent Sensing Materials and Chip Integration Technology of Zhejiang Province,Hangzhou Innovation Institute of Beihang University,Hangzhou 310052,China)

机构地区：[1]北京信息科技大学传感器北京市重点实验室,北京100101 [2]北京航空航天大学杭州创新研究院浙江省智能传感材料与芯片集成技术重点实验室,杭州310052

出　　处：《材料工程》2024年第9期19-26,共8页Journal of Materials Engineering

基　　金：浙江省引进培育领军型创新创业团队项目(2020R01007);北京市属高等学校高水平科研创新团队建设支持计划项目(BPHR20220124)。

摘　　要：通过溶剂热法合成由纳米点组成的均匀ZnO亚微球,并将ZnO亚微球添加到PZT5A粉体中进行放电等离子烧结,研究ZnO亚微球添加对PZT陶瓷物相组成、微观结构及电学性能的影响。结果表明:采用放电等离子烧结法能够在900℃保温5 min条件下制备出相对密度超过97%的PZT陶瓷。ZnO亚微球的添加有利于PZT陶瓷的烧结和晶粒生长,随着ZnO亚微球添加量的增加,PZT三方相(R)的含量逐渐增大。适量ZnO亚微球的添加能够改善PZT陶瓷的压电性能和介电性能,ZnO质量分数为0.10%时,材料的综合性能最优,在1 kHz频率下,压电常数d_(33)=432 pC/N,机电耦合系数k_(p)=0.56,机械品质因数Q_(m)=69.8,相对介电常数ε_(r)=1360,介电损耗tanδ=0.0227。The uniform ZnO submicron spheres composed of nanodots were synthesized by solvothermal method and then added to PZT5A powder for spark plasma sintering.The effects of ZnO addition on phase composition,microstructure and electric properties of the lead zirconate titanate(PZT)ceramics were studied.The results indicate that PZT ceramics with a relative density higher than 97%can be prepared by spark plasma sintering at 900℃for 5 min.The addition of ZnO submicron spheres is beneficial for speeding up the sintering process and promoting the grain growth of PZT ceramics.With the increase of ZnO addition,the content of the trigonal phase increases gradually.The addition of a proper amount of ZnO submicro spheres can improve the piezoelectric and dielectric property of PZT ceramics.When the mass fraction of ZnO is 0.10%,the superior overall performance of the material is optimal,at a frequency of 1 kHz,the piezoelectric constant d_(33)=432 pC/N,the electromechanical coupling coefficient k_(p)=0.56,the mechanical quality factor Q_(m)=69.8,the relative dielectric constantε_(r)=1360,and the dielectric loss tanδ=0.0227.

关 键 词：锆钛酸铅 压电陶瓷 放电等离子烧结 压电性能 介电性能 

分 类 号：TM282[一般工业技术—材料科学与工程]