Abstract
In this work we present the phase structure evolution, with long annealing times, of mixed oxides powders in the TiO2-ZrO2 system, obtained by the sol-gel method. Several compositions were synthesized via the catalytic hydrolysis of titanium and zirconium butoxides, HNO3 was added to adjust the pH=3. Pure zirconia and titania were also prepared. Long thermal treatments were applied from 100–1000°C, increasing the temperature every 100°C. These samples were heated during 20 h at each temperature.
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