摘要
采用溶胶低温燃烧法和硝酸盐水溶液超声喷雾热解法制备钇掺杂的镨酸钡(BaPr0.9Y0.1O3-δ)超细陶瓷粉体。应用XRD、SEM、TEM和激光粒度分析仪对陶瓷粉体的结构和组成进行表征。研究结果表明:采用溶胶低温燃烧法制备的BaPr0.9Y0.1O3-δ(BPY)为近似球形、粒径小于200 nm以及粒度分布范围窄的超细粉体;用硝酸盐水溶液经喷雾热解法制备的BPY为空心球形、粒径为1μm左右以及窄分布的超细粉体;BPY粉体可以在1 250和1 300℃烧结致密;C2的选择性和收率较低。
BaPr0.9Y0.103-δ ultrafine powders with homogeneous composition were synthesized via low temperature combustion process and ultrasonic spray pyrolysis method. The BaPr0.9Y0.103-δ powders, obtained by combustion and spray pyrolysis, were characterized using X-ray diffractometer, scanning electron microscope, transmission electron microscope and laser particle size analyzer. The results show that the powders obtained by combustion are nano-particles with size less than 200 nm, showing almost-spherical morphology. The powders obtained by spray pyrolysis are uniform hollow spherical particles with about 1 μm in diameter and agglomerate free with a narrow size distribution. When pressed and sintered in air at 1 250 ℃ and 1 300 ℃ for 8 h, dense sintered samples can be obtained. C2 yield and selectivity are low.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2007年第4期636-641,共6页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(20676073)
山东省自然科学基金资助项目(2003ZX09)
山东理工大学基金资助项目(2005KJM02)
