Corrosion behavior of porous chromium carbide in supercritical water

► Corrosion behavior of porous Cr3C2 in various SCW conditions was investigated. ► Cr3C2 is stable in SCW at temperature below 420-430 °C. ► Cracks and disintegration were observed at elevated testing temperatures. ► Degradation of Cr3C2 is related to the intermediate product CrOOH.