Carbon Capture and Storage (CCS) is acknowledged as a key technology to prevent large amounts of greenhouse gas emissions and contribute to global warming reduction targets. For long-term storage, CO2 is captured from industrial sources, purified, and sequestrated into geological reservoirs. However, the impurities (H2S, O2, CO, NO2 and SO2) frequently present in the injected CO2 stream originating from anthropogenic sources may compromise the storage integrity if not managed appropriately.

In dense phase CO2, presence of those impurities can reduce water solubility. This possible water drop out can lead to chemical reactions resulting in the formation of carbonic acid and other strong acids which can lead to either general or local corrosion mechanisms.

This paper describes the testing methodology implemented to replicate the corrosiveness of the environment during CO2 injection operations. Stress Corrosion Cracking (SCC) and crevice corrosion resistance of 13Cr and 25Cr SDSS (Super Duplex Stainless Steel, UNS S32760) steels were assessed in a CO2 stream with high impurity levels at high pressure and temperature.

Subject
Water, Materials, Modeling, Corrosion rate, Materials selection, Bicarbonates, Reservoirs, Crevices, Corrosion modeling, Fluids, Impurities, Localized corrosion, Stress corrosion cracking
Keywords:
CCS, Stress Corrosion Cracking, Sulfide Stress Corrosion Cracking, Localized Corrosion, Material Selection, Martensitic, Super Duplex
© 2025 Association for Materials Protection and Performance (AMPP). All rights reserved. This work is protected by both domestic and international copyright laws. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2025
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.