用反向共沉淀法合成Eu2Zr2O7/ZrO2(3Y)复相粒子;用XRD、DTA-TG、SEM表征物相变化及粒子形貌;分析了不同pH值下制备粉体的合成动力学.结果表明,两相体积比V (Eu2Zr2O7)∶V(ZrO2(3Y))=15∶85,初始溶液浓度0.1 mol/L,体系温度0℃,滴定速率2 mL/min,pH值=11,经1 100℃煅烧2.5h时,获得的Eu2Zr2O7/ZrO2(3Y)粒子形貌近似球形、粒径约35 nm.由Doyle-Ozawa和Kissinger法分别计算的pH值=11和12的样品物相变化各阶段的表观活化能平均值分别为59.66,100,310.53 kJ/mol和73.99,126.91,356.74 kJ/mol;晶粒生长活化能分别为18.96和23.90 kJ/mol,前者比后者小了4.94 kJ/mol,可见具有较高的烧结活性.
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