Mn掺杂TiO2基压敏-电容功能陶瓷的电性能研究  

Electrical Properties of Mn-doped TiO2 Varistor-Capacitor Functional Ceramics

作　　者：张帅谋[1] 王微[1] 陈华 ZHANG Shuai-mou;WANG Wei;CHEN Hua(School of Aviation and Materials,Anhui Technical College of Mechanical and Electrical Engineering, Wuhu Anhui 241002, China;School of Advanced Materials and Nanotechnology, XiDian University, Xi′an 710126, China)

机构地区：[1]安徽机电职业技术学院航空与材料学院,安徽芜湖124002 [2]西安电子科技大学先进材料与纳米科技学院,陕西西安710126

出　　处：《佳木斯大学学报（自然科学版）》2019年第5期786-789,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：高校优秀青年人才支持计划重点项目(gxyqZD2016475)

摘　　要：采用固相合成法制备MnO2掺杂TiO2基压敏-电容功能元件,利用SEM和XRD分析手段,研究了不同MnO2掺杂配比对TiO2双功能陶瓷显微结构和电性能的影响。结果显示微量MnO2掺杂的TiO2基陶瓷主晶相为金红石相。当MnO2的掺杂量为0.3mol%时,可以获得最佳的非线性和压敏特性,同时具有较高的介电常数和较低的介电损耗值。这是由于0.3mol%添加量的微结构晶粒更均匀,在TiO2陶瓷基体中产生充足的氧空位,掺杂的MnO2界面态产生了较高的晶界势垒共同作用的结果。The MnO 2-doped TiO 2 varistor-capacitor functional components were prepared by solid phase reaction methods. With the add amount of MnO 2 ,The effects of the microstructure and electrical properties of TiO 2 double function ceramics were investigated by SEM and XRD. The results show that the small amount MnO 2-doped TiO 2-based ceramic main phase is the rutile structure. When the doping amount of MnO 2 is 0.3mol%, the excellent nonlinearity and varistor characteristics can be exhibited, And show a high dielectric constant and a low dielectric loss. The reason is due to the effect that the grains is more uniform, and sufficient oxygen vacancies are generated in the TiO 2 ceramic at the addition of 0.3 mol% MnO 2,And the higher grain boundary barrier result of the interface state by doped MnO 2.

关 键 词：功能元件 压敏 陶瓷 非线性 

分 类 号：TN304.93[电子电信—物理电子学]