摘要
以碳酸氢铵为沉淀剂,采用共沉淀法和添加分散剂的方式获得具有高烧结活性的碳酸盐前驱体,这种前驱体在较低温度下烧结即可转变成相。同时借助IR,XRD和TEM等测试手段对前驱体和YAG粉体进行表征。实验结果表明,在分散剂存在的情况下,于800°C左右煅烧2 h,前驱物直接转变为纯的YAG相,而无其他的杂质相,所得YAG粉体的颗粒尺寸约20 nm,单分散的形貌近似球形。此外,不同温度下烧结所得粉体的荧光性质表明,发光强度随着烧结温度的提高而增加。
A carbonate precursor with high sintering activity was prepared by co-precipitation method using ACH as precipitant and HPC as dispersant. This precursor converted directly to single phase YAG from amorphous phase. The resulting YAG powder and precursor precipitant are characterized by DAT-TG,IR,XRD,TEM and PL. The results show Nd：YAG powder with nano-sized, mono-dispersed and free agglomeration can be obtained by co-precipitation method at the presence of HPC. And the Nd^3＋ PL intensity increased with the rising of the sintering temperature.
出处
《压电与声光》
CSCD
北大核心
2005年第4期398-400,共3页
Piezoelectrics & Acoustooptics
基金
教育部科学技术研究重点基金资助项目(03104)
中国杰出青年基金资助项目(60025409)
国家重大研究发展计划基金资助项目
关键词
钇铝石榴石
共沉淀法
纳米粉体
分散剂
荧光性质
yttrium aluminum garnet
co-precipitation
nano-sized powder
dispersant
photoluminescence
