Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities
Journal Article
·
· Corrosion Science
- National Energy Technology Lab. (NETL), Albany, OR (United States)
Future CO2 based power systems require steels resistant to corrosion in high-temperature CO2-rich environments. Candidate 9Cr ferritic-martensitic steels degrade by surface oxidation and substrate carburization, both of which can be strongly affected by impurities in the CO2. In this study we examined Grade 91 steel exposed to 95%CO2-4%H2O-1%O2 with/without 0.1% SO2 at 1 atm and 550, 600, 650° C for up to 3000 h to establish the temperature-dependence of these processes. SO2 showed little effect on oxidation at 550-600° C but reduced carburization, while the combination of SO2 and faster alloy diffusion at 650° C resulted in significant reduction in both oxidation and carburization.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE)
- Grant/Contract Number:
- 89243318CFE000003
- OSTI ID:
- 1888227
- Journal Information:
- Corrosion Science, Journal Name: Corrosion Science Vol. 198; ISSN 0010-938X
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Carburization and decarburization behavior of Grade 91 ferritic-martensitic steel in liquid sodium environments
High-Temperature Oxidation of Steels in Direct-Fired CO2 Power Cycle Environments
Decarburization and Carburization Behavior of Grade 91 Steel in Sodium Environments
Journal Article
·
2022
· Journal of Nuclear Materials
·
OSTI ID:1909641
High-Temperature Oxidation of Steels in Direct-Fired CO2 Power Cycle Environments
Journal Article
·
2021
· JOM. Journal of the Minerals, Metals & Materials Society
·
OSTI ID:1869683
Decarburization and Carburization Behavior of Grade 91 Steel in Sodium Environments
Technical Report
·
2020
·
OSTI ID:1658595