A comparative study of oxide scales grown on stainless steel and nickel-based superalloys in ultra-high temperature supercritical water at 800°C

This study investigates the oxidation behavior of several stainless steels and nickel-based superalloys exposed to supercritical water at 800°C for 12h. Characterization of the resulting oxide layers were conducted using weight change measurements, X-ray diffraction, scanning/transmission electron microscopy, and energy dispersive spectroscopy. Although the exposure time is only 12h, the thickness of the oxide layers formed was as high as 1μm, …