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Corrosion testing of materials in simulated superheated geothermal environment

Corrosion testing of materials in simulated superheated geothermal environment


Title: Corrosion testing of materials in simulated superheated geothermal environment
Author: Thorhallsson, Andri Isak   orcid.org/0000-0003-1632-6737
Stefansson, Andri   orcid.org/0000-0002-0439-193X
Kovalov, Danyil   orcid.org/0000-0003-1443-7679
Karlsdóttir, Sigrún   orcid.org/0000-0003-0762-883X
Date: 2020-05
Language: English
Scope: 108584
University/Institute: Háskóli Íslands
University of Iceland
School: Verkfræði- og náttúruvísindasvið (HÍ)
School of Engineering and Natural Sciences (UI)
Department: Iðnaðarverkfræði-, vélaverkfræði- og tölvunarfræðideild (HÍ)
Faculty of Industrial Eng., Mechanical Eng. and Computer Science (UI)
Jarðvísindastofnun (HÍ)
Institute of Earth Sciences (UI)
Series: Corrosion Science;168
ISSN: 0010-938X
DOI: 10.1016/j.corsci.2020.108584
Subject: Carbon steel; Superalloys; SEM; XRD; Acid corrosion; High temperature corrosion; Tæring málma; Málmblendi; Málmar; Jarðhiti
URI: https://hdl.handle.net/20.500.11815/2021

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Citation:

Thorhallsson, A. I., Stefansson, A., Kovalov, D., & Karlsdottir, S. N. (2020). Corrosion testing of materials in simulated superheated geothermal environment. Corrosion Science, 168 doi:10.1016/j.corsci.2020.108584

Abstract:

This paper reports the results of corrosion study for carbon steel, austenitic stainless steel, as well as titanium and nickel-based alloys which were tested in a simulated superheated geothermal environment (SSGE) in flow-through reactors to investigate the corrosion behaviour to aid in the future material selection for high temperature deep geothermal application. The testing fluid was superheated steam (T = 350 °C and P = 10 bars gauge) containing H2S, CO2 and HCl with condensate of pH = 3. The corrosion rate for all samples was negligible but carbon steel was prone to localized damage under a magnetite film with a sulphur rich sublayer.

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