Influence of Liquid Phase on Grain Growth of Ba0.998La0.002TiO3 Ceramics

摘要：

　　The influence of liquid phase on grain growth of Ba0.998La0.002TiO3+xmol%TiO2 (x=0~5.0)ceramics sintered at 1350℃ was investigated.The result showed that the liquid phase must present during grain growth; on the other hand,BaTiO3 grains must be dissolved,and then,precipitated from the liquid phase during the process of dissolution-precipitation.Otherwise,the grain growth was inhibited.The liquid phases of Ba6Ti17O4 and Ba2TiSi2O8 promoted grain growth due to high solution of BaTiO3 grains in the liquid phases.Ba2Ti2SiP2O13 liquid phase inhibited grain growth since BaTiO3 grains cannot dissolve into the phase,consequently the samples showed insulating behaviour.

关键词： Liquid phase Ba0.998La0.002TiO3 ceramics TiO2-excess additive Grain growth

作者: Pu Yongping Yang Gongan Liang Yunhe Yang Wenhu Wang Jinfei

作者单位: School of Materials Science and Engineering,Shaanxi University of Science and Technology,Xian 710021,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 461-464

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）