摘要
以金属醇盐为原料，采用溶胶－凝胶法制备出均匀的、体心立方结构的Ｙ２Ｏ３Ｅｕ３＋超细粉末．借助ＴＧ－ＤＴＡ、ＩＲ、ＸＲＤ和ＳＥＭ等分析手段，研究了凝胶的转变过程和粉末的结构，观察了粉末的形貌和粒径．结果表明：在４２３℃煅烧已有Ｙ２Ｏ３Ｅｕ３＋相生成，经８５０℃煅烧即得单－Ｙ２Ｏ３Ｅｕ３＋相超微粉，平均晶粒尺寸为５３ｎｍ；煅烧温度进一步升高。
The homogeneous,crystallization cubic Y2O3∶Eu3+ultrafine powders were prepared by a sol-gel process using metal alkoxide as starting material . The crystallization process of the ultrafine Y2O3∶Eu3+ was investigated by means of TGDTA、IR、XRD and SEM.The investigated results indicated that the Y2O3∶Eu3+was first produced at about 423℃; the grain size of Y2O3∶Eu3+ increased slowly with annealing temperature up to 850℃,wellcrystallized ultrafine Y2O3∶Eu3+ with size about 53nm was obtained at 850℃, but grew rapidly when the annealing temperature was higher than 850℃.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
1998年第2期105-108,共4页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金
关键词
溶胶-凝胶法
氧化钇
超细粉末
slogel method
ultrafine powder
Y2O3∶Eu3+
