Synthesis of Polycrystalline Nd∶YAG Nanopowders Used for Sintering Transparent Ceramics via Gel Combustion  

作　　者：Li Xianxue Hu Zhanggui Li Jiangtao 

机构地区：[1]Beijing Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China [2]Graduate School of Chinese Academy of Sciences, Beijing 100039, China Beijing Center for Crystal Research and Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China Functional Ceramic Research Group, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Journal of Rare Earths》2006年第z1期193-196,共4页稀土学报（英文版）

摘　　要：Polycrystalline nano-sized neodymium doped yttrium aluminum garnet (Nd∶Y3Al5O12, Nd∶YAG) powders were synthesized via a gel combustion method using nitrates and citric acid as starting materials. The evolution of phase composition and micro-structure of the powders were characterized by X-ray powder diffraction, thermogravimetry/differential thermal analysis and scanning electron microscopy. Well-crystallized Nd∶YAG nano-sized powders could be obtained at 950 ℃ for 2 h. The resultant powders are well dispersed, have a relatively narrow size distribution with an average particle size of approximately 50 nm, and show excellent sinterability. These powders can be densified to 99.2% of the theoretical density by HP sintering at 1700 ℃ for 3 h under 20 MPa nitrogen pressure.

关 键 词：Nd∶YAG GEL combustion SINTERING 

分 类 号：TQ174.75[化学工程—陶瓷工业]