(山东理工大学 化工学院， 淄博 255049)
摘 要: 采用低温燃烧法合成掺Zr的新型高温质子导体Ba(Ce0.8Zr0.2)0.9- Y0.1O3-δ陶瓷粉体。 运用X射线衍射仪、 扫描电子显微镜以及激光粒度仪分别对粉体的晶型、 微观形貌和粒度分布进行分析。 通过控制柠檬酸用量与金属离子摩尔总量的比， 直接制备出具有斜方晶钙钛矿结构的纯Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ超细粉体， 且粉体粒度分布均匀， 平均粒径为5.55 μm。 粉体烧结性能实验结果表明， 粉体在1 200 ℃发生烧结， 在1 300 ℃下烧结致密, 相对密度达到94.32%。
关键字: 高温质子导体；Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ陶瓷粉体； 低温燃烧； 钙钛矿
Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ high temperature proton conductor
（College of Chemical Engineering and Technology, Shandong University of Technology, Zibo 255049, China）
Abstract: The high temperature proton conductor Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ ceramic powders were synthesized by the low-temperature combustion method. The crystalline phase, microstructures and particle size distribution of the powders were investigated by XRD, SEM and laser grain analyzer, respectively. The experimental results indicate that the Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ micro-powders with single rhombic perovskite structure can be directly synthesized through controlling the ratio of citric acid to metal ions. The particle size of powders distributes evenly, and the average grain size is 5.55 μm. The results of sintering properties of Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ show that the sintering starts at 1 200 ℃ and the samples become dense at 1 300 ℃, the relative density reaches up to 94.32%.
Key words: high temperature proton conductor; Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ ceramic powders; low-temperature combustion; perovskite
