文献名： Co-precipitation synthesis of Nd: YAG powders with high uniformity and regular crystal size

作者 ： Yonghuan HAN , Liwen YAN , Shichen XIE , Tao XU , Wei JING , Feng HOU

Key Laboratory of Advanced Ceramics and Machining Technology of the Ministry of Education, School of Materials Science and Engineering, Tianjin University

摘要： Nd3xY3−3xAl5O12 (Nd:YAG) powders with high uniformity were synthesized by reverse-titration co-precipitation method. The precipitation formation process and dispersion mechanism of Nd:YAG precursor in co-precipitation process were analyzed, and the influence of the preparation technology on the dispersion of powders was explored by adjusting the concentration of precipitator, alcohol-water solvent and ratio of composite dispersant. In addition, through the analysis of the precursor calcination process, combined with SEM and particle size analysis, it is shown that, under optimum processing conditions, the powders have excellent particle uniformity, narrow particle size distribution and appropriate crystal size when calcined at 1150 °C for 2 h.

关键词： Nd:YAG powders, Reverse-titration co-precipitation, Composite dispersant, Low agglomerated powders, Precipitation mechanism