固相反应法制备Nd:YAG透明陶瓷

Fabrication of Transparent Nd:YAG Ceramics by a Solid-State Reaction Method

以Y(NO3)3和NH3·H2O为原料,并在Y(NO3)3溶液中添加少量(NH4)2SO4,采用沉淀法制备出化学组成为Y2(OH)5(NO3)·nH2O的先驱沉淀物.先驱沉淀物在1100℃下煅烧4h,得到了平均粒径为60nm的氧化钇原料粉体.Y2O3粉体与Al2O3、Nd2O3超细粉球磨混合后,采用固相反应工艺,经1700℃真空烧结5h,制备出透明的Nd:YAG陶瓷,同时对Nd:YAG透明陶瓷的光学性能进行了研究.

Y-2(OH)(5)(NO3)(.)nH(2)O precursor was produced using Y(NO3)(3) solution containing small amount of ammonia sulfate and (NH3H2O)-H-. solution. Yttria powders (60nm in average size) were obtained by calcining the precursor at 1100degreesC for 4h. The Y2O3, Al2O3 and Nd2O3 powders were mixed by ball milling, and then sintered into a fully transparent Nd:YAG ceramic body by vacuum sintering at 1700degreesC for 4h by a solid-state reaction method. The optical properties of the transparent Nd:YAG ceramic was investigated.