欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以Y2O3、Yb2O3、Al（NO3）3.9H2O和Ce（NO3）3.6H2O为原料,NH4HCO3、NH3.H2O做复合沉淀剂,用共沉淀法制备纳米稀土石榴石Ln3Al5O12（LnAG,Ln=Y,Ce,Yb）粉体。用TG/DTA、XRD、SEM、TEM等手段对LnAG前驱体及煅烧后的粉体进行表征。结果表明,用上述方法在1 000℃煅烧3h可得到分散性好、形状规则且粒径为50nm左右的Y3Al5O12、Yb3Al5O12、Y2.9Ce0.1Al5O12石榴石粉体,但不能得到Ce3Al5O12石榴石,合成石榴石粉体的最佳煅烧温度为1 050℃以上。
英文摘要：
Ln3Al5O12（LnAG,Ln=Y,Ce,Yb） lanthanide aluminium garnets nanopowders were prepared by co-precipitation method with Y2O3,Yb2O3,Al（NO3）3·9H2O and Ce（NO3）3·6H2O as raw materials,NH4HCO3 and NH3·H2O as co-precipitator.The precursor and calcined powders were characterized with TG/DTA,XRD,SEM and TEM.The results show that well dispersive,regular shape Y3Al5O12,Yb3Al5O12,Y2.9Ce0.1Al5O12 garnets powders with an average particle size of about 50 nm were obtained by calcining the precursor at 1 000 ℃ for 3 h.However,Ce3Al5O12 does not formed under the same experimental conditions.The optimum calcining temperature to synthetize garnets powder is above 1 050 ℃.
同期刊论文项目
同项目期刊论文
期刊信息
位置：