摘要
用柠檬酸及乙二醇作络合剂和燃料,硝酸作氧化剂,氨水作pH值调节搅和燃烧助剂,通过低温燃烧法合成了固体电解质SrCe0.95Y0.05O3-δ(SCY)纳米陶瓷粉。用X-ray衍射(XRD),热分析(TA),扫描电子显微镜(SEM)和透射电子显微镜(TEM)等分析方法对合成的粉体进行了表征。并初步考察了粉体的烧结性能。结果表明,低温燃烧法可以在短时间内,通过溶胶燃烧一步合成粒度小于25nm,分布均匀的SCY纳米粉,粉体具有良好的烧结性能。
Nanosized SrCe_(0.95)Y_(0.05)O(3-δ) powders with homogeneous composition were synthesized via the low temperature combustion process based on the Pechini method. A polymeric precursor sol was formed by using of nitric acid and ethylene glycol as chelating agents of metal ions. The perovskite-type SrCe_(0.95)Y_(0.05)O(3-δ) powders, smaller than 25nm in size and uniform in shape, were obtained through the combustion of the polymeric precursor sol at the existence of nitric acid and ammonium hydroxide. Sample characterization was performed by means of thermal analysis (TA), X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope(TEM). The powder, when pressed and sintered in air at 1300℃ for 10h, attained the sintered density ≈96% of its theoretical density.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2005年第6期31-35,共5页
Journal of Materials Engineering
基金
国家自然科学基金资助项目(20076025)
