固-液混料对氧化锌压敏陶瓷微观结构与电学性能的影响  

The Effects of Solid-liquid Mixing Method on the Microstructure and Electrical Properties of Zno Varistor Ceramics

作　　者：刘雪婷 陈雷明[1,2] 高前程 陈博宇 何家乐 姚梦媛 LIU Xueting;CHEN Leiming;GAO Qiancheng;CHEN Boyu;HE Jiale;YAO Mengyuan(School of Materials Science and Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;Henan Key Laboratory of Aeronautic Materials and Application Technology,Zhengzhou 450046,China)

机构地区：[1]郑州航空工业管理学院材料学院,河南郑州450046 [2]河南省航空材料与应用技术重点实验室,河南郑州450046

出　　处：《郑州航空工业管理学院学报》2025年第1期90-97,共8页Journal of Zhengzhou University of Aeronautics

基　　金：河南省科技攻关项目(202102210216,162102210238)。

摘　　要：采用固-液相混料法(湿化学法)制备ZnO-Bi_(2)O_(3)-Sb_(2)O_(3)-MnO_(2)-Cr_(2)O_(3)-Co_(3)O_(4)压敏陶瓷样品,并与传统的氧化物混合法(固相混料法)进行对比,分别通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)对两种方法制备样品的微观结构进行表征,使用电流/电压源表和阻抗分析仪研究样品的电学性能。实验发现:相比于固相混料法,固-液相混料法能够明显提升样品晶界相分布的均匀性,同时也可以有效提升样品的电学性能,其击穿电压梯度E_(1mA)为313.42 V/mm,提高了67%;非线性系数α为15.45,提高了69.8%;漏电流JL为27.58μA/cm^(2),降低了66.3%。The solid-liquid phase mixing method(wet chemical method)was used in this paper to prepare ZnO-Bi_(2)O_(3)-Sb_(2)O_(3)-MnO_(2)-Cr_(2)O_(3)-Co_(2)O_(3) varistor ceramics and was compared with the traditional oxide mixing method(solid-phase mixing method).The samples were respectively characterized by X-Ray Diffractometry(XRD),Scanning Electron Microscopy(SEM),and Energy Dispersive Spectroscopy(EDS),and the electrical properties of the samples were investigated by a Current/Voltage source meter and an impedance analyzer.Compared with the solid-phase mixing method,the solid-liquid mixing method could significantly improve the uniformity of the phase distribution at the grain boundary of the samples,and also effectively improve the electrical properties of the samples.It was found that the breakdown voltage gradient E_(1mA) was 313.42 V/mm,enhanced by 67%;the nonlinearity coefficientαwas 15.45,improved by 69.8%;and the leakage current JL was 27.58 A/cm^(2),reduced by 66.3%.

关 键 词：固-液相混料法 压敏陶瓷 晶界分布 非线性电学性能 阻抗特性 

分 类 号：TM281[一般工业技术—材料科学与工程]