MgO掺杂对氧化锌线性陶瓷电阻的影响  

Effect of MgO Doping on Zinc Oxide Linear Ceramics Resistance

作　　者：刘建科 张瑞婷 宋帆 徐亚宁 田书凯 LIU Jianke;ZHANG Ruiting;SONG Fan;XU Yaning;TIAN Shukai(College of Science and Arts,Shaanxi University of Science and Technology,Xi'an 710021,China;College of MaterialsScience and Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学文理学院,西安710021 [2]陕西科技大学材料科学与工程学院,西安710021

出　　处：《硅酸盐学报》2019年第7期957-963,共7页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(51272145,50972087)资助

摘　　要：利用固相烧结法制备出基础配方为ZnO-Al2O3-MgO-Fe2O3-TiO2-SiO2的ZnO线性陶瓷电阻。研究了MgO掺杂量对ZnO线性陶瓷电阻微观结构、阻抗、阻温特性和阻频特性的影响。结果表明:在MgO掺杂量为5%(质量分数)时,ZnO线性陶瓷电阻的综合性能最好,其晶粒尺寸较为均匀,相对密度最高,电阻率为256 647Ω·cm,非线性系数为1.03,阻温系数为-5.45×10–3/℃。The zinc oxide(ZnO) linear ceramic resistance was synthesized from ZnO-Al2O3-MgO-Fe2O3-TiO2-SiO2 via solid-state sintering. The effect of MgO doping on the microstructure, impedance, temperature-resistance characteristics and impedance-frequency characteristics was investigated. The results show that the ZnO linear ceramic resistance doping with 5%MgO has the optimum comprehensive performance. This resistance synthesized has relatively uniform grain size, maximum relative density, resistivity of 256 647 Ω·cm·cm, nonlinear coefficient of 1.03, and resistance temperature coefficient of -5.45×10–3/℃.

关 键 词：氧化镁掺杂 氧化锌线性电阻 非线性系数 阻温特性 阻频特性 

分 类 号：TQ174[化学工程—陶瓷工业]