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Abstract The oxidation behaviour of ferritic-martensitic steel in supercritical water has been studied at 600−700 °C and 25 MPa. Exposure tests as functions of temperature, time and distance from the… Click to show full abstract
Abstract The oxidation behaviour of ferritic-martensitic steel in supercritical water has been studied at 600−700 °C and 25 MPa. Exposure tests as functions of temperature, time and distance from the leading edge of the specimen provide evidence that hydrogen influence the surface morphology and oxide phase. Hematite is apt to develop on the top of the magnetite at a lower temperature, prolonged time, and smaller distance from the leading edge of the specimen. By the consideration of convective mass transfer, diffusive mass transport and oxidation rate, a model has been proposed to calculate the partial pressure of hydrogen.
Journal Title: Corrosion Science
Year Published: 2020
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