Reinvestigation of the Phase Diagram for the System Titanium–Oxygen

Samples of the titanium oxides with O/Ti ratios between 0.5 and 1.67 were prepared by heating mixtures of Ti and TiO2 in high vacuum to 1500°C and annealing them in silica ampuls at 900° to 1100°C. Results of chemical and X-ray analyses are combined with previously published data to form a complete phase diagram. The melting points of Ti2O3 and Ti3O5 were 1839°° 10°C and 1774°° 10°C, respectively.

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