The role of dissolved oxygen in supercritical water in the oxidation of ferritic-martensitic steel

- Isotope tracer experiment was carried out in supercritical water (H216O) with 18O2.
- Both 18O2 and H216O simultaneously react to grow oxide scale.
- The oxidation rate increases with dissolved oxygen content in supercritical water.
- Increased oxidation rate stems from changed oxygen potential through oxide scale.