以分散性不同的Y2O3纳米粉为原料,利用固相反应法合成YAG超细粉.在不同的制备条件下,针对Y2O3纳米粉的分散性对固相反应进程的物相变化、显微组织及YAG陶瓷体透光性的影响进行了观察和研究.结果表明,Y2O3纳米粉的分散性决定其反应活性,是影响固相反应进程的主要因素.将高活性的Y2O3纳米粉与Al2O3粉均匀混合,可促进固相反应的完成并有效降低烧结温度,使真空烧结后的YAG陶瓷组织更加均匀,有利于烧结后期孤立气孔的排除.
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