Corrosion of austenitic and ferritic-martensitic steels exposed to supercritical carbon dioxide

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Corrosion Science

DOI:https://doi.org/10.1016/j.corsci.2011.06.002· OSTI ID:1023326

Tan, Lizhen ^[1]; Anderson, Mark ^[2]; Taylor, D ^[3]; Allen, Todd R ^[2]

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1. ORNL
2. University of Wisconsin, Madison
3. Bechtel Marine Propulsion Corporation

Supercritical carbon dioxide (S-CO{sub 2}) is a potential coolant for advanced nuclear reactors. The corrosion behavior of austenitic steels (alloys 800H and AL-6XN) and ferritic-martensitic (FM) steels (F91 and HCM12A) exposed to S-CO{sub 2} at 650 C and 20.7 MPa is presented in this work. Oxidation was identified as the primary corrosion phenomenon. Alloy 800H had oxidation resistance superior to AL-6XN. The FM steels were less corrosion resistant than the austenitic steels, which developed thick oxide scales that tended to exfoliate. Detailed microstructure characterization suggests the effect of alloying elements such as Al, Mo, Cr, and Ni on the oxidation of the steels.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1023326
• Journal Information: Corrosion Science, Vol. 53, Issue 10; ISSN 0010-938X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
AUSTENITIC STEELS
CARBON DIOXIDE
COOLANTS
CORROSION
INCOLOY 800H
MICROSTRUCTURE
OXIDATION
OXIDES
REACTORS
STEELS