Abstract
The phase transformations in nanosized precursors (precipitation products) prepared by the sol-gel processing and the formation of the microstructure of ceramic materials in the t-ZrO2-Al2O3 system are investigated. It is demonstrated that the phase transformation occurring during the precipitation depends on the precrystallization state that is governed by a sequence of precipitation of the components in the Al2O3-ZrO2-CeO2 system in the course of the synthesis of precursors. The nascent metastable phases of solid solutions based on t-ZrO2 and θ-Al2O3 subsequently have a substantial effect on the sizes of grains in the microstructure of the corresponding ceramics.
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