Figure 5 presents the XRD patterns of the specimens oxidized under various conditions. The oxidized surface of the alloy consisted mainly of rutile-type TiO2
and a small amount of Al2O3 and TiVO4 (a solid solution of TiO2 and VO2). In contrast to the previous reports , there were no Ti diffraction peaks in the
XRD pattern because the scale was very thick after severe oxidation and the X-rays could not penetrate the oxides to detect the Ti substrate.
Figure 5 presents the XRD patterns of the specimens oxidized under various conditions. The oxidized surface of the alloy consisted mainly of rutile-type TiO2
and a small amount of Al2O3 and TiVO4 (a solid solution of TiO2 and VO2). In contrast to the previous reports , there were no Ti diffraction peaks in the
XRD pattern because the scale was very thick after severe oxidation and the X-rays could not penetrate the oxides to detect the Ti substrate.