La_xBa_(1-x)CoO_3系导电陶瓷的显微结构与电特性关系的研究

Studies on Relation Between Electrical Characteristic and Microstructure of La xBa 1 x CoO 3 System Conductive Ceramics

通过Ｘ射线衍射分析和扫描电镜观察，得到了ＬａｘＢａ１－ｘＣｏＯ３系导电陶瓷的显微结构，并发现当Ｘ从０到１变化时，相结构随之发生六方—立方—多相结构变化。在显微结构形状上，呈现出晶粒通道网络。

The microstructure of La xBa 1 x CoO 3 system conductive ceramics was obtained by XRD analysis and SEM observation. The changes of phase structure ranging from hexagonal—CuBiC structure to multiphase structure were developed for X ranging from 0 to 1. There were passage networks of grains in microstructure, and the corresponding relation between room temperature resistivity and phase structure was apparent.