Breakdown and Evolution of the Protective Oxide Scales of AISI 304 and AISI 316 Stainless Steels under High-Temperature Oxidation

Table 4

EDX spectra analysis of the oxides in different areas for AISI 304 at 𝑇=1000°C.

Oxide	Substrate oxides %	Internal oxidation %	External oxidation %
Cr2O3	70.57	40.34	6.82
Fe3O4	28.54	46.97	—
NiO	0.89	12.69	0.47
Fe2O3	—	—	92.71
Total	100.00	100.00	100.00