Short-time oxidation of iron and steel

In very early stages of iron oxidation, the oxidation kinetics usually show a different pattern, as the scale structure may be different from those developed in the later stages. One contributing factor was the overtemperature [37] or 

10 Oxide scale surface morphology evolution at the very early stage of oxidation in flowing air (flow rate 50 cmVs) at 1000°C [104], 

For the sample oxidized at 1050°C, two sweeping actions were observed within 30 seconds, but the oxide grains were much larger. The austenite grain boundaries were wiped off at the first sweeping action at about the tenth second and the sweeping action was completed within only one second. 

In the study carried out by Sheasby et al. [56] it was found that a single layer of wustite formed at 1200°C for a short time in 4O2-N2, which was smooth initially after 30 seconds of exposure, similar to that shown in Fig. 8.11, but became irregular after 210 seconds of exposure. 

In some more recent studies carried out by Suirez et al. [107-109], the 

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