Preparation and Characterization of CeO2-ZrO2 Nanocomposite Powders by in-situ Self-Assembly Method
To address the problems of uneven component distribution of zirconia nanocomposites,abnormal grain growth during high temperature treatment,CeO2-ZrO2 nanocomposite powders were prepared by in-situ self-assembly method.The effects of CeO2 addition,different dispersants and calcination conditions on the phase con-tent and morphology of ZrO2 powders were studied.The results show that ZrO2 powders containing 10％CeO2 with polyether P123 as a dispersant achieve the complete stabilized of zirconia tetragonal phase when calcined under vacuum conditions.The dispersion of the powders is good,and its particle size is 50～100 nm.The carbon formed in vacuum calcination effectively prevents the abnormal growth of CeO2-ZrO2 nanoparticles.The present work provides support for the preparation of high-quality ceramic nanocomposite powders,and has broad applica-tion prospects.
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