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

Figure 7

(a) The SEM micrographs of the cross-section of the AISI 304 at 1000°C for 100 hours at magnification 500x, (b) interface substrate-oxide at 3000x, (c) internal oxidation at 3000x, and (d) external oxidation at 2000x.