采用化学共沉淀法制得了氧化铈摩尔含量在2%～12%之间的CeO2/ZrO2复合纳米粉体.研究了随着氧化铈含量的增加,氧化锆组分由单斜相(m)到四方相(t)转变的过程,并分析了影响相变的主要因素.从X射线衍射图谱(XRD)和透射电镜图(TEM)可以得出:随着氧化铈摩尔含量的增加,氧化锆四方相体积分数也随之增加,二者基本呈线性关系,当氧化铈含量为12mol%时,氧化锆在室温下被完全稳定在四方相,离子置换固溶体的形成是使四方相稳定在室温下的主要原因.
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