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The effect of KCl on the corrosion behavior of the austenitic stainless steel 304L was studied at 600 °C in 5% O2 + 40% H2O + N2. The breakdown of the protective oxide was investigated. This was done through a detailed microstructural characterization of the oxide scales formed after 1, 24 and 168 h. The oxidized samples were investigated by SEM/EDX, FIB and STEM/EDX. The presence of KCl(s) causes...
FIB, SEM and STEM/EDX were used to investigate X20 stainless-steel samples exposed to dry O2, or O2 containing 40% H2O, with a flow velocity of 0.5 cm/s or 5 cm/s, for 168 hr or 336 hr at 600°C. Thin protective Cr-rich (Cr,Fe)2O3 was maintained on the samples exposed to dry O2, even after 336 hr, and on the sample exposed to O2/H2O mixture with the low-flow velocity (0.5 cm/s) for 168 hr. The oxide...
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