溶胶-凝胶低温燃烧法合成Ce_(1-x)Gd_xO_(2-x/2)固体氧化物纳米粉  

Sol-Gel Combustion Synthesis of Ce_(1-x)Gd_xO_(2-x/2) Nanometer Ceramic Powders

作　　者：高冬梅[1] 李朝辉[1] 连建设[1] 胡建东[1] 郭作兴[1] 

机构地区：[1]吉林大学材料科学与工程学院教育部汽车材料重点实验室,吉林长春130025

出　　处：《中国稀土学报》2002年第z2期116-118,共3页Journal of the Chinese Society of Rare Earths

基　　金：吉林省科技发展计划项目(20000322)

摘　　要：采用溶胶 凝胶低温燃烧法合成出Ce1-xGdxO2-x/2(x=0,0.05,0.10,0.15,0.20,0.30)固体氧化物纳米粉。将用Sol Gel法制成的干凝胶加热至300℃左右使之发生燃烧反应,再将燃烧产物在600℃焙烧2h,即可形成单相萤石结构的氧化物粉体,其平均晶粒直径为20nm左右。Gd2O3doped CeO2 nanometer ceramic powders were prepared by solgel combustion method ignited at low temperatures. It is found that the dry gel can be selfcombusted at temperature higher than 300 ℃. Fluorite type oxide Ce1-xGdxO2-x/2 powders(with x=0, 0.05,0.10,0.15,0.20,0.30)were formed when the combustion ashes were calcined subsequently at 600 ℃ for 2 h. The grain size of the final powder is about 20 nm.

关 键 词：稀土 溶胶-凝胶法 燃烧合成 纳米材料 

分 类 号：O614.33[理学—无机化学]