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Breakaway oxidation behaviour of ferritic stainless steels at 1150 °C in humid air.
- Source :
-
Corrosion Science . Jul2016, Vol. 108, p11-22. 12p. - Publication Year :
- 2016
-
Abstract
- 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 Cr 2 O 3 scale in Mo alloying 445 steel can greatly minimise the Cr depletion. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FERRITIC steel
*OXIDATION
*HUMIDITY
*SURFACE roughness
*MICROSTRUCTURE
Subjects
Details
- Language :
- English
- ISSN :
- 0010938X
- Volume :
- 108
- Database :
- Academic Search Index
- Journal :
- Corrosion Science
- Publication Type :
- Academic Journal
- Accession number :
- 114804876
- Full Text :
- https://doi.org/10.1016/j.corsci.2016.02.042