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    • 3. 发明授权
    • Process for producing nanoscale yttrium aluminum garnet (YAG) fluorescent powders
    • 生产纳米级钇铝石榴石(YAG)荧光粉的工艺
    • US06869544B2
    • 2005-03-22
    • US10285095
    • 2002-10-31
    • In-Gann ChenYu-Lin ChenChii-Shyang Hwang
    • In-Gann ChenYu-Lin ChenChii-Shyang Hwang
    • C09K11/77C09K11/80
    • C09K11/7706C09K11/7774
    • The present invention pertains to a process for synthesizing nano-scale yttrium aluminum garnet (YAG) fluorescent powders having formula (I): (Y3−xR1x)(Al5−yR2y)O12  (I) wherein R1 and R2 are independently selected from the elements consisting of rare earth metals and transition metals, and each of x and y is independently a value between 0 and 1.5, where the process comprises the steps: (a) forming an aqueous solution comprising rare earth metal ions, transition metal ions, yttrium ion and aluminum ion; (b) adding a precipitating agent to the aqueous solution of step (a) in an amount sufficient to allow the rare earth metal ions, transition metal ions, yttrium ion and aluminum ion comprised in the aqueous solution to substantially complex with the depositing agent; (c) drying the gel of step (b) to obtain a dried gel; (d) adding a dehydroxying compound to the dried gel of step (c) and subjecting it to a further drying step; and (e) sintering the product of step (d) at a temperature between 700 and 1400° C. to obtain the nano-scale yttrium aluminum garnet fluorescent powders of formula (I).
    • 本发明涉及合成具有式(I)的纳米级钇铝石榴石(YAG)荧光粉的方法:其中R 1和R 2独立地选自由稀土金属和过渡金属组成的元素 并且x和y中的每一个独立地为0至1.5之间的值,其中该方法包括以下步骤:(a)形成包含稀土金属离子,过渡金属离子,钇离子和铝离子的水溶液;(b)加入 向步骤(a)的水溶液中的沉淀剂,其量足以使包含在水溶液中的稀土金属离子,过渡金属离子,钇离子和铝离子与沉积剂基本上复合;(c)干燥 步骤(b)的凝胶以获得干燥的凝胶;(d)向步骤(c)的干燥凝胶中加入脱羟基化合物并进一步干燥步骤; 和(e)在700-1400℃的温度下烧结步骤(d)的产物以获得式(I)的纳米级钇铝石榴石荧光粉末。