Abstract
It has been shown that ferritic – martensitic (F/M) steels with 12 wt% Cr can form a protective oxide layer depending on the CO2 purity from the first stages of oxidation. The impurities which could explain this difference could be O2. In the case where O2 concentration in the gas phase was significant (>ppm), a thick duplex oxide layer was observed, whereas, if the O2 concentration was low (<ppm), a Cr rich oxide layer about hundred times thinner was formed. These results strongly suggested that O2 reacted before CO2 on the steel surface and that the protective oxide layer was formed by reactions between chromium and O2.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
