Oxidation Behavior of Austenitic Steels in Supercritical Water Containing Dissolved Oxygen
- 45 Downloads
Oxidation tests of austenitic steel Super304H and HR3C were conducted at 550-600 °C in supercritical water under 25 MPa with the dissolved oxygen content. The oxidation rate of Super304H rapidly increased with increasing temperature, while the weight change of HR3C at 600 °C is slightly larger than that at 550 °C. A double-layer oxide scale developed on Super304H and HR3C steel, which was made up of an Fe-rich outer layer and a Cr-rich inner layer. The criterion contents of Cr were calculated for Super304H and HR3C. The effect of temperature and the Cr content on oxidation rate and oxide composition were discussed.
Keywordsoxidation steel supercritical water temperature
This paper was supported by Beijing Natural Science Foundation, China (3154041), and the Fundamental Research Funds for the Central Universities, China.
- 5.Y. Chen, A. Kruizenga, X. Ren, L. Tan, Y. Yang, K. Sridharan, T.R. Allen, Progress in understanding corrosion in supercritical water systems, in 3rd Int. Symposium on SCWR-Design and Technology, vol. 128, 2007Google Scholar
- 17.T.R. Allen, K. Sridharan, Y. Chen, L.Z. Tan, X.W. Ren, and A. Kruizenga, Research and development on materials corrosion issues in supercritical water environment, in Proceedings of the 15th International Conference on the Properties of Water and Steam (ICPWS XV), (Radisson SAS Hotel Berlin, Germany, 2008), pp. 7–11Google Scholar
- 21.G.S. Was and T.R. Allen, Time, Temperature, and Dissolved Oxygen Dependence of Oxidation of Austenitic and Ferritic–Martensitic Alloys in Supercritical Water, Proc. ICAPP, 2005, 5, p 15–19Google Scholar
- 23.P.M. Rosecrans, N. Lewis, and D.J. Duquette, Effect of corrosion film composition and structure on the corrosion kinetics of Ni-Cr-Fe alloys in high temperature water, Lockheed Martin Corporation, Schenectady, NY 12301 (US), 2002Google Scholar
- 24.C. Wagner, Diffusion and high temperature oxidation of metals, in Atom Movements (ASM, Metals Park, Cleveland, OH, 1951), pp 153–173Google Scholar
- 27.P. Kofstad, High Temperature Corrosion, Elsevier Applied Science Publishers Ltd., London, 1988Google Scholar
- 33.A.N. Hansson, H. Danielsen, F.B. Grumsen, and M. Montgomery, Microstructural Investigation of the Oxide Formed on TP 347HFG During Long-Term Steam Oxidation, Mater. Corros., 2010, 61, p 665–675Google Scholar
- 42.P. Guiraldenq and P. Poyet, Influence of Nickel on the Volume and Intercrystalline Diffusion in Austenitic Fe-Cr-Ni alloys—Grain Boundary Energy Evolution as a Function of Composition, Mem. Sci. Rev. Metall., 1973, 70, p 715–723Google Scholar
- 44.J.H. Swisher and E.T. Turkdogan, Solubility, Permeability, and Diffusivity of Oxygen in Solid Iron, AIME Met. Soc. Trans., 1967, 239, p 426–431Google Scholar