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,这种前驱体在较低的温度下烧结即可转变成相。同时借助DTA TG、IR、XRD和TEM等测试手段对前驱体和YAG粉体进行表征。结果表明:在分散剂存在的情况下,此800℃左右煅烧2h前驱物直接转变为纯的YAG相,而无其它的杂质相,所得的YAG粉体的颗粒尺寸约20nm,是单分散的形貌近似球形的。此外不同温度下粉体的荧光性质表明,随着烧结温度的提高发光强度有所增加。
Transparent yttrium aluminum garnet (YAG) ceramics can be prepared by using synthesized nano-sized powder. A carbonate precursor with high sintering activity was prepared by co-precipitation method using ammonimum hydrogen carbonate (AHC) as precipitant. The resulting YAG powder and precursor precipitant are characterized using 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. The Nd3+ PL intensity increased with the rising of the sintering temperature.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2004年第4期501-503,共3页
Journal of Functional Materials
基金
教育部科学技术研究重点资助项目(03104)
中国杰出青年基金资助项目(60025409)
关键词
钇铝石榴石
共沉淀法
前躯体
纳米粉体
分散剂
荧光性质
Agglomeration
Carbonates
Differential thermal analysis
Dispersions
Doping (additives)
Garnets
Glass ceramics
Infrared spectroscopy
Neodymium lasers
Photoluminescence
Precipitation (chemical)
Sintering
Thermogravimetric analysis
Transmission electron microscopy
X ray diffraction analysis
