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Evaluation of suitability of high-alloyed materials for geothermal applications in the north German basin

  • In the last years geothermal power has become a reliable and significant energy source. Because service conditions in geothermal facilities from deeply located aquifers are critical in terms of corrosion, materials selection is a very important issue. Preliminary evaluation of the materials suitability represents therefore a valuable strategy to ensure a secure and reliable operation of the facilities. In geothermal applications, the use of high-alloyed materials such as superaustenitic stainless steels, and nickel-based alloys has been considered as a good alternative because of their remarkable corrosion resistance and appropriate mechanical properties. Nevertheless, the corrosion behavior of those metallic materials in geothermal fluids at service conditions has not been determined in many cases. In this work, laboratory tests including electrochemical investigations and exposure tests at 100 °C and 150 °C (1,500 kPa) showed the limits of suitability concerning localized corrosionIn the last years geothermal power has become a reliable and significant energy source. Because service conditions in geothermal facilities from deeply located aquifers are critical in terms of corrosion, materials selection is a very important issue. Preliminary evaluation of the materials suitability represents therefore a valuable strategy to ensure a secure and reliable operation of the facilities. In geothermal applications, the use of high-alloyed materials such as superaustenitic stainless steels, and nickel-based alloys has been considered as a good alternative because of their remarkable corrosion resistance and appropriate mechanical properties. Nevertheless, the corrosion behavior of those metallic materials in geothermal fluids at service conditions has not been determined in many cases. In this work, laboratory tests including electrochemical investigations and exposure tests at 100 °C and 150 °C (1,500 kPa) showed the limits of suitability concerning localized corrosion of three different, corrosion-resistant alloys in the highly saline fluid of the North German Basin.zeige mehrzeige weniger

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Metadaten
Autor*innen:H.S. Klapper, Ralph BäßlerORCiD, K. Weidauer, Dieter Stürzbecher
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Corrosion
Jahr der Erstveröffentlichung:2012
Verlag:National Association of Corrosion Engineers
Verlagsort:Houston, Tex.
Jahrgang/Band:68
Ausgabe/Heft:1
Erste Seite:016001-1
Letzte Seite:016001-9
Freie Schlagwörter:Duplex steel; Geothermal; Localized corrosion; Nickel-based alloys; Stainless steel
DOI:10.5006/1.3676631
ISSN:0010-9312
ISSN:1938-159X
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.02.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:07.06.2012
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