采用Al(NO3)3·9H2O,NH4Al(SO4)2·12H2O以及Y(NO3)3为母盐,尿素为沉淀剂,利用微波均相沉淀法制备YAG纳米粉体.分析比较了SO2-4离子在粉体制备过程中的作用,对添加不同量SO2-4离子所制备的粉体的可烧结性进行了比较.利用IR、XRD、TEM分析了前驱体的化学组成、物相变化以及形貌;利用激光粒度分析仪对粉体的粒度分布进行了表征;利用SEM对烧结体的显微结构进行了观测.结果表明:SO2-4离子的含量影响前驱体的分散程度、组成及形貌,进而对YAG粉体的可烧结性有显著的影响,添加8%硫酸根的粉体具有良好的可烧结性,经1550℃常压烧结致密化程度达到98%以上.
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