Temperature-Dependence of Corrosion of Ni-Based Superalloys in Hot CO2-Rich Gases Containing SO2 Impurities
Abstract
Future power plants will require Ni-based superalloys resistant to high-temperature corrosion in CO2-rich environments containing impurities. In this work, several commercially available Ni-based alloys (617, 230, 625, 263, 740H) were exposed at 600°C, 650°C, 750°C and 1 atm to 95% CO2, 4% H2O, 1% O2 without/with 0.1% SO2 to simulate compositions expected in a direct-fired supercritical CO2 power cycle. The results indicate no effect of SO2 at 750°C, a small negative effect at 650°C, and a large negative effect at 600°C. Alloys exposed at the higher temperatures (650–750°C) formed thin Cr-rich oxide scales, whereas the lowest temperature (600°C) resulted in thicker scales consisting of non-protective oxides and sulfates. Thermodynamic analysis indicates this increased corrosion is associated with a transition in the stable compounds in contact with the gas. Understanding the factors that affect this transition will aid in the selection or design of alloys for future CO2-based power systems.
- Authors:
-
- National Energy Technology Lab. (NETL), Albany, OR (United States); Leidos Research Support Team, Albany, OR (United States)
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- Publication Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE), Clean Coal and Carbon Management
- OSTI Identifier:
- 1635619
- Report Number(s):
- RSS309
Journal ID: ISSN 1047-4838
- Grant/Contract Number:
- 89243318CFE000003
- Resource Type:
- Accepted Manuscript
- Journal Name:
- JOM. Journal of the Minerals, Metals & Materials Society
- Additional Journal Information:
- Journal Volume: 72; Journal Issue: 5; Journal ID: ISSN 1047-4838
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Oleksak, Richard P., Tylczak, Joseph H., Holcomb, Gordon R., and Doğan, Ömer N. Temperature-Dependence of Corrosion of Ni-Based Superalloys in Hot CO2-Rich Gases Containing SO2 Impurities. United States: N. p., 2020.
Web. doi:10.1007/s11837-020-04081-z.
Oleksak, Richard P., Tylczak, Joseph H., Holcomb, Gordon R., & Doğan, Ömer N. Temperature-Dependence of Corrosion of Ni-Based Superalloys in Hot CO2-Rich Gases Containing SO2 Impurities. United States. https://doi.org/10.1007/s11837-020-04081-z
Oleksak, Richard P., Tylczak, Joseph H., Holcomb, Gordon R., and Doğan, Ömer N. Mon .
"Temperature-Dependence of Corrosion of Ni-Based Superalloys in Hot CO2-Rich Gases Containing SO2 Impurities". United States. https://doi.org/10.1007/s11837-020-04081-z. https://www.osti.gov/servlets/purl/1635619.
@article{osti_1635619,
title = {Temperature-Dependence of Corrosion of Ni-Based Superalloys in Hot CO2-Rich Gases Containing SO2 Impurities},
author = {Oleksak, Richard P. and Tylczak, Joseph H. and Holcomb, Gordon R. and Doğan, Ömer N.},
abstractNote = {Future power plants will require Ni-based superalloys resistant to high-temperature corrosion in CO2-rich environments containing impurities. In this work, several commercially available Ni-based alloys (617, 230, 625, 263, 740H) were exposed at 600°C, 650°C, 750°C and 1 atm to 95% CO2, 4% H2O, 1% O2 without/with 0.1% SO2 to simulate compositions expected in a direct-fired supercritical CO2 power cycle. The results indicate no effect of SO2 at 750°C, a small negative effect at 650°C, and a large negative effect at 600°C. Alloys exposed at the higher temperatures (650–750°C) formed thin Cr-rich oxide scales, whereas the lowest temperature (600°C) resulted in thicker scales consisting of non-protective oxides and sulfates. Thermodynamic analysis indicates this increased corrosion is associated with a transition in the stable compounds in contact with the gas. Understanding the factors that affect this transition will aid in the selection or design of alloys for future CO2-based power systems.},
doi = {10.1007/s11837-020-04081-z},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = 5,
volume = 72,
place = {United States},
year = {Mon Feb 24 00:00:00 EST 2020},
month = {Mon Feb 24 00:00:00 EST 2020}
}
Web of Science