Resistance of High-Nickel, Heat-Resisting Alloys to Air and to Supercritical CO2 at High Temperatures
Commercial alloys 282, 230, HR160, HR120 and 188 were exposed to supercritical CO2 and to air at temperatures of 700–1000 °C. Alloy specimens took the form of thick-walled tubes, which were pressurised internally with flowing CO2 to simulate the likely stress conditions in service. All alloys formed protective scales containing continuous chromia layers plus internal oxidation zones. No internal carburisation was ever observed. In most cases, the reaction morphologies and rates were very similar in the two gases. The lack of any significant carbon effect on corrosion is attributed to additional scale layers of manganese spinel and/or silica, which prevent carbon penetration.
KeywordsNi-base alloys Oxidation Carburisation Supercritical CO2 Tubular specimens
This work has been supported by the Australian Government through the Australian Renewable Energy Agency (ARENA). The Australian Government, through ARENA, is supporting Australian research and development in solar photovoltaic and concentrating solar power technologies to help solar power become cost competitive with other energy sources.
- 2.J. Pasch, T. Conboy, D. Fleming, and G. Rochau, Supercritical CO2 Recompression Brayton Cycle: Completed Assembly Description, SANDIA REPORT, SAND2012-9546, 40p, October 2012.Google Scholar
- 3.V. Dostal, PhD Thesis—A Supercritical Carbon Dioxide Cycle for Next Generation Nuclear Reactors, Massachusetts Institute of Technology, January 2004.Google Scholar
- 24.D. J. Young, High Temperature Oxidation and Corrosion of Metals, 2nd ed, (Elsevier, Amsterdam, 2016).Google Scholar
- 25.T. N. Neises, M. J. Wagner, and A. K. Gray, Structural Design Considerations for Tubular Power Tower Receivers Operating at 650 °C. The 8th International Conference on Energy Sustainability. Boston, Massachusetts, June 30–July 2, 2014. Conference Paper NREL/CP-5500-6148.Google Scholar
- 28.K. Hauffe and H. Pfeiffer, Zeitschrift fur Metallkunde 44, 27 (1953). (in German).Google Scholar
- 32.C. Wagner, Zeitschrift für Elektrochemie 63, 772 (1959). (in German).Google Scholar
- 35.R. I. Olivares, W. Stein, T. D. Nguyen, D. J. Young, Corrosion of Nickel-Base Alloys by Supercritical CO2, in Advances in Materials Technology for Fossil Power Plants, eds. J. Parker, J. Shingledecker, J. Siefert, ISBN 978-1-62708-131-3 (ASM International, Materials Park, OH, 2016) p. 889.Google Scholar
- 39.D. L. Klarstrom, in Materials Design Approach and Experience, J. C. Zhao et al. eds., TMS (2001) pp 297–307; D. L. Klarstrom, NASA Contractor Report.Google Scholar
- 40.https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19780024288.pdf; R. Fui, S. Zhao, Y. Wang, Q. Li, Y. Ma, F. Lin, C. Chi, Energy Materials 2014, CSM and TMS (2014) pp. 193–202.