Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-31943 Beitrag zu einem Tagungsband Pfennig, A.; Wolthusen, Helmut; Wolf, Marcus; Kranzmann, Axel Effect of heat treatment of injection pipe steels on the reliability of a saline aquifer water CCS-site in the Northern German basin Samples of differently heat treated high alloyed stainless injection-pipe steels AISI 420 X46Cr13, AISI 420J X20Cr13 as well as X5CrNiCuNb16-4 AISI 630 were kept at T=60 °C and ambient pressure as well as p=100 bar for 700 h - 8000 h in a CO2- saturated synthetic aquifer environment similar to possible geological on-shore CCS-sites in the northern German Basin. Corrosion rates and scale growth are lowest after long term exposure for steels hardened and tempered at 600 to 670 °C and pits - indicating local corrosion- decrease in diameter but increase in number as a function of carbon content of the steel. Martensitic microstructure is preferred with respect to this particular CCS-site. Elsevier Ltd. 2014 GHGT-12 - Greenhouse gas control technologies conference 63 GHGT-12 - Greenhouse gas control technologies conference Austin, TX, USA 05.10.2014 09.10.2014 5762 5772 urn:nbn:de:kobv:b43-319433 10.1016/j.egypro.2014.11.609 http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.de 2016-02-20 OPUS4-34717 Beitrag zu einem Sammelband Pfennig, A.; Wolthusen, Helmut; Zastrow, Philip; Kranzmann, Axel Jha, A.; Wang, C.; Neelameggham, N.R.; Guillen, D.P.; Li, L.; Belt, C.K.; Kirchain, R.; Spangenberger, J.S.; Johnson, F.; Gomes, A.J.; Pandey, A.; Hosemann, P. Evaluation of heat treatment performance of potential pipe steels in CCS-environment To resist the corrosive geothermal environment during carbon capture and storage CCS -such as: heat, pressure, salinity of the aquifer, CO2-partial pressure, properties of pipe steels-require certain specification. For evaluation samples of differently heat treated high alloyed stainless injection-pipe steels AISI 420 X46Cr13, AISI 420J X20Cr13 as well as X5CrNiCuNb16-4 AISI 630 were kept at T=60 °C and ambient pressure as well as p=100 bar for 700 h up to 8000 h in a CO2-saturated synthetic aquifer environment similar to a possible geological situation in the northern German Basin. Corrosion rates and scale growth are lowest after long term exposure for steels hardened and tempered at 600 °C to 670 °C and pits -indicating local corrosion- decrease in diameter but increase in number as a function of carbon content of the steel. Martensitic microstructure is preferred with respect to these particular conditions. Wiley The Minerals, Metals & Materials Society (TMS) 2015 Energy Technology 2015: Carbon Dioxide Management and Other Technologies 978-1-119-08240-8 15 22 10.1002/9781119093220.ch2 2016-02-20 OPUS4-41847 Zeitschriftenartikel Pfennig, Anja; Kranzmann, Axel; Wolthusen, Helmut Unusual Corrosion Behavior of 1.4542 Exposed a Laboratory Saline Aquifer Water CCS-Environment Differently heat treated coupons of 1.4542 were kept at T=60 °C and ambient pressure as well as p=100 bar for 700 h - 8000 h in an a) water saturated supercritical CO2 and b) CO2-saturated synthetic aquifer environment similar to on-shore CCS-sites in the Northern German Basin. Surface corrosion layers are homogeneous but unusually discontinuously ellipsoidal. After 8000 h at 100 bar maximum corrosion rate in the liquid phase is approximately 0.014 mm/year, with normalizing providing best corrosion resistance and approximately 0.003 mm/year in the supercritical phase where hardening+tempering at 670 °C leads to lowest corrosion rates. Elsevier Ltd. 2017 Energy Procedia 114 5229 5240 urn:nbn:de:kobv:b43-418472 10.1016/j.egypro.2017.03.1679 http://creativecommons.org/licenses/by-nc-nd/3.0/de/deed.de 2017-09-07