采用红外光谱(FT-IR)技术分析了以Sm2O3和ZrO2为原料,固相反应制备Sm2Zr2O7的形成机制.结果表明:Sm2O3中的Sm3+逐渐向ZrO2晶格中扩散并取代Zr4+的位置形成萤石结构的ZrO2-Sm2O3固溶体,由于二者化合价的差别为保持晶格结构局部的电中性而引入了氧空位,氧空位的引入加快了ZrO2与Sm2O3固溶过程;随着温度的升高,已形成ZrO2-Sm2O3固溶体转变为焦绿石结构的Sm2Zr2O7,并在1500℃以后形成Sm2Zr2O7晶体,整个过程没有其它中间相出现.
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