摘要
采用雾化加料的方式,以碳酸氢铵为沉淀剂,制备了纳米Ce0.8Gd0.2O1.9粉体。探寻了制备过程中影响粉体颗粒大小及团聚的工艺参数,并对影响机理进行了探讨。结果表明:将沉淀剂雾化加入的工艺有利于得到分散性好、尺寸均匀的纳米粉体。在最佳工艺参数点,即(Ce3++Gd3+)浓度为0.2 mol/L,反应温度为60℃,r[AHC∶(Ce3++Gd3+)]为3∶1,制得的纳米Ce0.8Gd0.2O1.9颗粒粒径在15 nm左右。
Nantvsized Ce0.8Gd0.2O1.9 （20 GDC） powders were prepared by atomization co-deposition method using ammonium hydrogen carbonate （AHC） as the precipitant, The process parameters which influenced the sizes and agglomeration of 20 GDC powers were studied and its influence mechanism was discussed. The results show that the method can gain small and homogeneous nano-sized powders. The optimum parameter for preparing 20 GDC are obtained, viz the molar concentration of （Ce3^3＋ Gd^3＋） is 0.2 mol/L, the reaction temperature is 60 ℃, the molar ratio of AHC and （Ce^3＋＋ Gd^3＋） is 3.Under such conditions the 15 nm 20 GDC powders are obtained.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2007年第2期17-19,共3页
Electronic Components And Materials
基金
江苏省自然科学基金资助项目(BK2002010)
江苏省高新技术项目(BG2004022)
关键词
无机非金属材料
纳米
CeO2基电解质材料
共沉淀
雾化
non-metallic inorganic material
nanometer
ceria-based electrolytes
co-deposition
atomization
