Abstract
X-ray diffraction studies and densification measurements were carried out on three compositions, 75% TiO2+25% ZrO2, 75% TiO2+25% Al2O3, and 100% TiO2, designated as TZ, TA and T respectively, heated under oxidizing and reducing atmospheres between 1200°C and 1400°C. The densification was always higher and the formation of the new phases took place with greater ease when the specimens were fired under reducing conditions. This was possible due to the formation of anionic vacancies in the TiO2 structure, which would enhance diffusion.
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