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Meeting Materials Science & Technology 2019
Symposium Advanced Materials for Harsh Environments
Presentation Title Effect of Chromium on Corrosion Resistance of Stainless Steels in Supercritical CO2 Direct Power Cycle Environments
Author(s) Reyixiati Repukaiti, Lucas Teeter, Margaret Ziomek-Moroz, Omer Dogan, Richard Oleksak, Randal Burt Thomas, John Baltrus, Julie Tucker
On-Site Speaker (Planned) Reyixiati Repukaiti
Abstract Scope Corrosion resistance of alloys in heat exchangers for supercritical carbon dioxide direct power cycles is key to the design requirements of future plants. The effect of Cr content on the corrosion behavior of 400-series stainless steels was investigated in water containing CO2 and O2 simulating condensed water composition in low-temperature recuperators and coolers. The electrochemical experiments were conducted at 50C and ambient pressure while immersion experiments were conducted at 50C and 8 MPa for 96 hours. These results indicate that the corrosion resistance of the investigated steels increases with increasing Cr content. Surface analysis revealed formation of Cr-rich protective layers.
Proceedings Inclusion? Planned: At-meeting proceedings


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