The influence of oxygen partial pressure on the base oxide of chromia forming steels: The story prior to breakaway oxidation
Artikel i vetenskaplig tidskrift, 2023

The influence of pO2 on the base oxide formed on 304 L stainless steel has been investigated at 600 °C. The alloy was exposed in 5%O2-95%N2 and 10%H2-20%H2O-Ar atmospheres and the initial stages of oxidation were analysed by TEM and EDX. In both environments, the thin scale consists of a Cr-rich oxide overlaid by a FeCrMn oxide. However, the subscale formed in H2-H2O is richer in Cr compared to the 5%O2-95%N2 case (∼90 cation% and ∼70 cation% respectively). The findings are in good agreement with thermodynamic calculations and can explain breakaway oxidation of marginal chromia forming steels in H2-H2O.

Water vapor


Stainless steels

Oxygen activity

High temperature corrosion


Mohammad Sattari

Chalmers, Fysik, Mikrostrukturfysik

Hamed Hoseini Hooshyar

Chalmers, Kemi och kemiteknik, Energi och material

Jesper Liske

Chalmers, Kemi och kemiteknik, Energi och material

Torbjörn Jonsson

Chalmers, Kemi och kemiteknik, Energi och material

Corrosion Science

0010-938X (ISSN)

Vol. 213 110959


Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material




Mer information

Senast uppdaterat