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Influence of heat treatment on the corrosion behavior of steels exposed to CCS environment

  • The influence of heat treatment on pit corrosion needs to be considered to guarantee reliability and safety during the injection of compressed emission gasses – mainly containing CO2 – into deep geological layers (CCS-technology, Carbon Capture and Storage). In laboratory experiments different heat treated steels used as injection pipe with 13% Chromium and 0.46% Carbon (X46Cr13, 1.4034) as well as 0.2% Carbon (X20Cr13, 1.4021) were tested. Also X5CrNiCuNb16-4 (1.4542) was investigated as typical steel used for geothermal pumps. Keeping stable environmental conditions in laboratory experiments the samples were exposed to the distinct synthetic aquifer environment saturated with technical CO2 at a flow rate of 3 l/h for up to 6 months. Independent of the exposure time the least amount of pits is found on hardened steels with martensitic microstructure where X5CrNiCuNb16-4 shows fewer pits than X46Cr13 and X20Cr13. Regarding steels with similar Cr-content the higher Ccontent inThe influence of heat treatment on pit corrosion needs to be considered to guarantee reliability and safety during the injection of compressed emission gasses – mainly containing CO2 – into deep geological layers (CCS-technology, Carbon Capture and Storage). In laboratory experiments different heat treated steels used as injection pipe with 13% Chromium and 0.46% Carbon (X46Cr13, 1.4034) as well as 0.2% Carbon (X20Cr13, 1.4021) were tested. Also X5CrNiCuNb16-4 (1.4542) was investigated as typical steel used for geothermal pumps. Keeping stable environmental conditions in laboratory experiments the samples were exposed to the distinct synthetic aquifer environment saturated with technical CO2 at a flow rate of 3 l/h for up to 6 months. Independent of the exposure time the least amount of pits is found on hardened steels with martensitic microstructure where X5CrNiCuNb16-4 shows fewer pits than X46Cr13 and X20Cr13. Regarding steels with similar Cr-content the higher Ccontent in 1.4034 results in fewer pits compared to 1.4021.zeige mehrzeige weniger

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Metadaten
Autor*innen:Anja Pfennig, P. Wojtas, I. Spengler, B. Linke, Axel KranzmannORCiD
Persönliche Herausgeber*innen:V. Villacampa, C.A. Brebbia, A.A. Mammoli
Dokumenttyp:Beitrag zu einem Sammelband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Energy and Sustainability III
Jahr der Erstveröffentlichung:2011
Verlag:WIT Press
Verlagsort:Southampton, UK
Erste Seite:487
Letzte Seite:498
Freie Schlagwörter:CCS; CO2-injection; CO2-storage; Heat treatment; Pit corrosion; Steel
DOI:10.2495/ESUS110411
ISSN:1746-448X
ISSN:1743-3541
ISBN:978-1-84564-508-3
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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