(Y_2O_3,CaO)复合掺杂ZrO_2材料的交流复阻抗研究  

AC complex impedance study of zirconia doped with yttria and calcia

作　　者：李英[1] 唐子龙[2] 龚江宏[2] 张中太[2] 

机构地区：[1]中国科学院化工冶金研究所,北京100080 [2]清华大学材料科学与工程系,北京100084

出　　处：《功能材料》2001年第3期282-284,共3页Journal of Functional Materials

摘　　要：借助交流复阻抗技术对（１－０．０８ｙ－０．１２ｘ－ＺｒＯ２－０．０８ｙＹ２Ｏ３－０．１２ｘＣａＯ（ｘ＋ｙ＝１，ｘ：０～１）系统在５２３～９７３Ｋ内的导电行为进行了研究。发现随着 ＣａＯ含量增加，该系统的晶粒电导活化能的增加，而晶界电导活化能则呈现先降后升的趋势．本文对上述现象进行了初步分析。The electrical behavior in the temperature range from 523K to 973K of the system (1- 0. 08y- 0. 12x) ZrO2- 0. 08y Y2O3 - 0. 12xCaO (x+y=1, x: 0~1) was studied by means of the complex impedance technique. It was shown that, with the increasing CaO content in the system, the activation energy for lattice conduction increases, while that for grain-boundary conduction first decreases and then increases. Preliminary analysis to these phenomena was also presented in this paper.

关 键 词：ZrO2-Y2O3-CaO系统 电导率 复阻抗技术 电导活化能 晶界效应 

分 类 号：TQ174.758[化学工程—陶瓷工业]