【摘要】 在Y₃Al₅O₁₂前躯体纳米粉末的制备过程中，容易引起团聚，或者带入杂质而降低其纯度，且其粒度均匀性也可能受到影响，这些缺陷是大多数合成方法都在一定程度上存在的。而YAG透明陶瓷和掺杂YAG发光材料等必须要用高纯、超细并且团聚少的粉体。为此，探索采用一种基于sol-gel法的快燃技术来制备Y₃Al₅O₁₂前躯体纳米粉末，并将其与传统sol-gel法得到的结果对比。研究表明，两种方法获得的YAG物相纯度基本一致。但是，快燃技术制备的YAG粉末形状单一，颗粒之间的连接较为松散，以软团聚为主，且颗粒粒径偏差小，其平均粒度为63 nm;而传统sol-gel法合成的YAG粉末形状不规则，种类多，颗粒之间连接较为紧密，较多的呈现硬团聚特征，且颗粒粒径也有较大的偏差，其平均粒度约为85 nm。因此，可以将快燃技术用于合成YAG及其他类似的陶瓷前躯体粉末。更多还原

【Abstract】 It is vital to YAG ceramic and doped luminescent materials that its precursor Y₃Al₅O₁₂ powder is pure, fine and dispersive.However, almost all of synthesis methods have multifarious deficiencies.So a kind of fast combustion method by sol-gel method was applied to synthesize YAG nano-powders, and compared with another kind powder by conventional sol-gel method.It was indicated that the purity of two kind powders is nearly coincident.On the other hand, YAG powder via sol-gel fast combustion method is dispersive and uniform.Nevertheless, its powder average size which has hardly disparity is about 63 nm.But other powder average size which has a little disparity is approximately 85 nm.And that is anomalous, multitudinous, close-knit.Therefore, YAG and other ceramic precursor powder could be synthesized via this fast combustion method by sol-gel method.更多还原