Study of thin oxidation films on iron alloys by Raman spectroscopy
Résumé
Raman spectroscopy was used to follow the hot oxidation of iron alloys. In the case of fast oxidation at 1200°C, the process is very heterogeneous. Depending on the grain, α-Fe2O3, Fe3O4, Cr2O3 and various spinels are detected. For the first time, one can describe a particular organization of haematite Fe2O3 and spinels in which nickel is associated with chromium. It is concluded that Raman spectroscopy is a suitable method for studying anisotropic thin film growth.