Oxidation of Fe-10Cr in O-2 and in O-2+H2O environment at 600 degrees C: A microstructural investigation
Artikel i vetenskaplig tidskrift, 2013

Oxidation of Fe-10Cr in dry and wet O-2 was studied at 600 degrees C for up to 168 h. Oxide microstructure was investigated by STEM/EDX, FIB/SEM and TEM. Oxidation in dry O-2 gives a Cr-rich protective (Fe1-xCrx)(2)O-3 scale. The same protective oxide initially forms in O-2 + H2O environment, but after an incubation period scale breakdown is triggered by CrO2(OH)(2) evaporation that depletes the substrate in Cr and converts (Fe1-xCrx)(2)O-3 to FeCr spinel oxide. Internal oxidation occurs after breakaway. Alternating external and internal oxidation result in the inward-growing scale showing a characteristic banded morphology.

TEM

Internal oxidation

STEM

Stainless steel

High temperature corrosion

Författare

Torbjörn Jonsson

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Bagas Pujilaksono

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

H. Heidari

Chalmers, Teknisk fysik, Materialens mikrostruktur

Fang Liu

Chalmers, Teknisk fysik, Materialens mikrostruktur

Jan-Erik Svensson

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Mats Halvarsson

Chalmers, Teknisk fysik, Materialens mikrostruktur

Lars-Gunnar Johansson

Chalmers, Kemi- och bioteknik, Oorganisk miljökemi

Corrosion Science

0010-938X (ISSN)

Vol. 75 326-336

Ämneskategorier

Metallurgi och metalliska material

DOI

10.1016/j.corsci.2013.06.016