Open this publication in new window or tab >>Show others...
2023 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 222, article id 111385Article in journal (Refereed) Published
Abstract [en]
To provide clarity on the poorly-understood mechanism of breakaway oxidation, corrosion of Fe9Cr1Mo steel in pressurised CO2 is quantified and modelled. The temperature range 400-640 degrees C, relevant to nuclear power plants, is emphasised. Attack is in the form of combined oxide scale growth and internal carburisation of the metal. Carbon activity in the metal at its surface exhibits a strong time dependence consistent with the kinetically-limited transport of carbon due to the slow Boudouard reaction. Breakaway is associated with the approach to saturation of the steel with respect to carbon. Diffusion modelling agrees well with steel carbide precipitation observations.
Place, publisher, year, edition, pages
Elsevier BV, 2023
Keywords
Oxidation, Carburisation, Breakaway, Modelling, Characterisation, Lifing
National Category
Corrosion Engineering
Identifiers
urn:nbn:se:kth:diva-335276 (URN)10.1016/j.corsci.2023.111385 (DOI)001047278200001 ()2-s2.0-85165888066 (Scopus ID)
Note
QC 20230904
2023-09-042023-09-042023-09-07Bibliographically approved