人工晶体学报2017，Vol.46Issue(3)：480-485,6.
CeO2对CaTiO3陶瓷烧结性能以及微观结构的影响
Effect of CeO2 Addition on Sintering Property and Microstructure of CaTiO3 Ceramics
摘要
Abstract
CaTiO3 ceramics were prepared via solid-state reaction method using CaO and TiO2 as main raw materials.The effects of CeO2 additive on the sintering property and microstructure of CeO2-doping ceramic were mainly studied.The crystalline phase composition, microstructure and sintering characteristics of the specimens were investigated by XRD, SEM, EDS and so on.The lattice parameters and cell volume of CaTiO3 were determined and calculated by X'pert High score Plus software.The results show that the lattice parameters and lattice volume of Ce-doping CaTiO3 are affected by the substitution of Ce3+ for Ca2+ and Ce4+ for Ti4+ in the structure of CaTiO3.With increasing the additive, the lattice parameters and lattice volume increase first and then decrease.Structure defect of solid solution accelerated diffusion of ion and promoted synthesis rate of CaTiO3, resulting in the increase of grain size.The shape of crystal grain change from steps' morphology to regular polygons with excessive addition of CeO2, while the average crystal size decrease.Thermal defects caused by higher sintering temperature also promote the solid reaction and sintering of synthetic CaTiO3.关键词
CeO2/CaTiO3陶瓷/固相反应/烧结性能Key words
CeO2/CaTiO3 ceramic/solid phase reaction/sintering property分类
化学化工引用本文复制引用
安迪,罗旭东,谢志鹏,李婷,刘鹏程..CeO2对CaTiO3陶瓷烧结性能以及微观结构的影响[J].人工晶体学报,2017,46(3):480-485,6.基金项目
国家自然科学基金(51402143) （51402143）
辽宁省自然基金(601009802) （601009802）
