Publication Details

Cheng, X., Jiang, Z., Monaghan, B. J., Wei, D., Longbottom, R. J., Zhao, J., Peng, J., Luo, M., Ma, L., Luo, S. & Jiang, L. (2016). Breakaway oxidation behaviour of ferritic stainless steels at 1150 °C in humid air. Corrosion Science, 108 11-22.


The breakaway oxidation behaviour of ferritic stainless steels 430, 443 and 445 has been investigatedat 1150◦C in humid air. The oxidation kinetics exhibited significant differences among the three ferriticstainless steels. A uniform and steady growing oxide scale was developed on the 430 steel with an evensteel/oxide interface. Local breakdown of the initially protective oxide scale occurred and oxide noduleswere developed on the 443 and 445 stainless steels, resulting in irregular and rough steel/oxide inter-faces. The breakaway oxidation behaviour was significantly influenced by the microstructure and thecomposition of the oxide scale. The Mn-Cr spinel oxide formed on top of the Cr2O3scale in Mo alloying445 steel can greatly minimise the Cr depletion.



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