钇铝石榴石(YAG)透明陶瓷是制造大功率、发光效率高的小型激光器的良好材料.而制备掺镱钇铝石榴石(Yb:YAG)透明陶瓷的关键在于制备出粒度均匀、化学纯度高、分散性好的YAG超细粉体.本文以Y2O3、Yb2O3、Al2(NO3)3·9H2O为原料,以Yb:Y:Al=0.06:2.94:5的配比掺杂2%的Yb取代Y,配成硝酸盐溶液,用NH4HCO3作为沉淀剂,用碳酸盐共沉淀法制备Yb:YAG前驱超细粉体,并用TG-DTA、XRD、IR、SEM等测试方法对其粉体结构和形貌进行分析.结果表明:在1 100℃煅烧过程中,失重约为41%.所得到的Yb:YAG粉体结晶好,烧结性高、纯度较好、形状规则,粒径均匀,均在200～300 nm之间.
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