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研究了等温热处理的共沉淀MgO(10.4mol%)-ZrO2粉体的酸浸滤,并利用XRD和TEM表征了粉体的物相和晶粒尺寸.结果表明:在1450℃,MgO全部溶入ZrO2晶格,相应的相是四方和立方相;在1350~750℃,只有约2.2 mol%MgO溶入ZrO2晶格,相应的相为四方相;750℃以下,溶入ZrO2晶格的MgO反而增加,在500℃时,固溶度为7.7mol%MgO,相应的相是立方相.其余的MgO分布在ZrO2晶粒的表面.

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