【摘要】 钇铝石榴石 (Y3Al5O1 2 ,YAG)透明陶瓷因其优异的光学性能和制备工艺方面的优势而成为极具潜力的激光材料。性能优良的YAG微粉有利于制备高性能YAG陶瓷。利用铝和钇的硝酸盐为起始原料制备反应前驱物 ,用乙醇作溶剂 ,在 2 80℃保温 4h下合成了球形YAG晶粒。在溶剂热反应过程中 ,溶剂中反应前驱物通过溶解、脱水、析晶及生长的过程直接形成YAG晶粒 ,无中间相形成 ,晶粒平均尺寸约为80nm ,且尺寸分布均匀 ,晶粒间基本无团聚。更多还原

【Abstract】 Translucent yttrium aluminum garnet (YAG) ceramics become a potential laser material because of its excellent optical properties and advantages of preparing technology. YAG super-fine powder with good properties is beneficial in preparing YAG ceramics with high performance. YAG powder with spherical grains can be synthesized at (280 ℃) for 4 h with aluminum and yttrium nitrates as the starting materials, and ethanol as the solvent. The YAG grains are formed directly in the process of solvothermal reaction through a process of the dissolution of precursors, dehydration, crystallization and growth, and there are no intermediate crystalline phases in the process. The mean size of obtained grains is 80 nm, with homogenous size dispersion, and there is almost no hard-agglomeration in the powders.更多还原