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Title: Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities

Abstract

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.

Authors:
 [1];  [1];  [1]
  1. 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)
OSTI Identifier:
1888227
Alternate Identifier(s):
OSTI ID: 1843902
Grant/Contract Number:  
89243318CFE000003
Resource Type:
Accepted Manuscript
Journal Name:
Corrosion Science
Additional Journal Information:
Journal Volume: 198; Journal ID: ISSN 0010-938X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Steel; Carburization; High temperature corrosion; Oxidation; Direct-fired CO2 power cycle

Citation Formats

Oleksak, Richard P., Tylczak, Joseph H., and Doğan, Ömer N. Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities. United States: N. p., 2022. Web. doi:10.1016/j.corsci.2022.110147.
Oleksak, Richard P., Tylczak, Joseph H., & Doğan, Ömer N. Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities. United States. https://doi.org/10.1016/j.corsci.2022.110147
Oleksak, Richard P., Tylczak, Joseph H., and Doğan, Ömer N. Tue . "Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities". United States. https://doi.org/10.1016/j.corsci.2022.110147. https://www.osti.gov/servlets/purl/1888227.
@article{osti_1888227,
title = {Temperature-dependence of oxidation and carburization of Grade 91 steel in CO2 containing impurities},
author = {Oleksak, Richard P. and Tylczak, Joseph H. and Doğan, Ömer N.},
abstractNote = {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.},
doi = {10.1016/j.corsci.2022.110147},
journal = {Corrosion Science},
number = ,
volume = 198,
place = {United States},
year = {Tue Feb 01 00:00:00 EST 2022},
month = {Tue Feb 01 00:00:00 EST 2022}
}

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