Preparation of LuAG Powders with Single Phase and Good Dispersion for Transparent Ceramics Using Co-Precipitation Method

Liangjie Pan; Benxue Jiang; Jintai Fan; Qiuhong Yang; Chunlin Zhou; Pande Zhang; Xiaojian Mao; Long Zhang

doi:10.3390/ma8085247

Preparation of LuAG Powders with Single Phase and Good Dispersion for Transparent Ceramics Using Co-Precipitation Method

Materials (Basel). 2015 Aug 19;8(8):5363-5375. doi: 10.3390/ma8085247.

Authors

Liangjie Pan^{1

2}, Benxue Jiang^{3

4}, Jintai Fan⁵, Qiuhong Yang⁶, Chunlin Zhou⁷, Pande Zhang⁸, Xiaojian Mao⁹, Long Zhang¹⁰

Affiliations

¹ School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China. panliangjie@shu.edu.cn.
² Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. panliangjie@shu.edu.cn.
³ School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China. jiangsic@foxmail.com.
⁴ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. jiangsic@foxmail.com.
⁵ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. jtfan@siom.ac.cn.
⁶ School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China. yangqiuhong@shu.edu.cn.
⁷ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. zhouchunlin1989@yeah.net.
⁸ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. zhangpande2015@foxmail.com.
⁹ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. xmao@siom.ac.cn.
¹⁰ Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China. lzhang@siom.ac.cn.

Abstract

The synthesis of pure and well dispersed lutetium aluminum garnet (LuAG) powder is crucial and important for the preparation of LuAG transparent ceramics. In this paper, high purity and well dispersed LuAG powders have been synthesized via co-precipitation method with lutetium nitrate and aluminum nitrate as raw materials. Ammonium hydrogen carbonate (AHC) was used as the precipitant. The influence of aging time, pH value, and dripping speed on the prepared LuAG powders were investigated. It showed that long aging duration (>15 h) with high terminal pH value (>7.80) resulted in segregation of rhombus Lu precipitate and Al precipitate. By decreasing the initial pH value or accelerating the dripping speed, rhombus Lu precipitate was eliminated and pure LuAG nano powders were synthesized. High quality LuAG transparent ceramics with transmission >75% at 1064 nm were fabricated using these well dispersed nano LuAG powders.

Keywords: LuAG powder; co-precipitation method; pH values; single phase; transparent ceramics.