(山東理工大學(xué) 化工學(xué)院， 淄博 255049)
摘 要: 采用低溫燃燒法合成摻Zr的新型高溫質(zhì)子導(dǎo)體Ba(Ce0.8Zr0.2)0.9- Y0.1O3-δ陶瓷粉體。 運用X射線衍射儀、 掃描電子顯微鏡以及激光粒度儀分別對粉體的晶型、 微觀形貌和粒度分布進行分析。 通過控制檸檬酸用量與金屬離子摩爾總量的比， 直接制備出具有斜方晶鈣鈦礦結(jié)構(gòu)的純Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ超細粉體， 且粉體粒度分布均勻， 平均粒徑為5.55 μm。 粉體燒結(jié)性能實驗結(jié)果表明， 粉體在1 200 ℃發(fā)生燒結(jié)， 在1 300 ℃下燒結(jié)致密, 相對密度達到94.32%。
關(guān)鍵字: 高溫質(zhì)子導(dǎo)體；Ba(Ce0.8Zr0.2)0.9Y0.1O3-δ陶瓷粉體； 低溫燃燒； 鈣鈦礦
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
