Breakaway oxidation behaviour of ferritic stainless steels at 1150 °C in humid air

Publication Type:
Journal Article
Citation:
Corrosion Science, 2016, 108 pp. 11 - 22
Issue Date:
2016-07-01
Metrics:
Full metadata record
Files in This Item:
© 2016 Elsevier Ltd. The breakaway oxidation behaviour of ferritic stainless steels 430, 443 and 445 has been investigated at 1150 °C in humid air. The oxidation kinetics exhibited significant differences among the three ferritic stainless steels. A uniform and steady growing oxide scale was developed on the 430 steel with an even steel/oxide interface. Local breakdown of the initially protective oxide scale occurred and oxide nodules were developed on the 443 and 445 stainless steels, resulting in irregular and rough steel/oxide interfaces. The breakaway oxidation behaviour was significantly influenced by the microstructure and the composition of the oxide scale. The Mn-Cr spinel oxide formed on top of the Cr2O3 scale in Mo alloying 445 steel can greatly minimise the Cr depletion.
Please use this identifier to cite or link to this item: