Figure 4
From: Core-multishell globular oxidation in a new TiAlNbCr alloy at high temperatures

Typical micrographs showing transient core-shell globular oxides in TiAlNbCr alloy after oxidation at 900 °C for 100 h. (a) and (b) Morphologies of two oxides with a transient or incomplete core-shell globular structure at an intermediate distance to the scale-substrate interface.