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The effect of H2 and H2O on the oxidation of 304L-stainless steel at 600 °C: general behaviour (part I)
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik.
Vise andre og tillknytning
2016 (engelsk)Inngår i: Oxidation of Metals, ISSN 0030-770X, E-ISSN 1573-4889, Vol. 85, nr 3-4, s. 321-342Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The effect of p(H2O) and p(H2) on the oxidation of 304L stainless steel at 600 °C has been investigated in the present study. The samples were analysed by means of X-ray diffraction, Auger spectroscopy, and scanning electron microscopy equipped with energy dispersive spectroscopy. The results showed that at fixed p(H2), the corrosion rate increased considerably with increasing p(H2O). At fixed p(H2O), the corrosion rate decreased slightly with increasing p(H2). Duplex oxide scales formed during the exposure in all environments. The outer and inner layer consisted of Fe3O4 and (Fe, Cr)3O4, respectively. The latter was mainly in the form of internal oxidation. The Cr-rich oxide formation was observed at the initial oxidation process before oxide breakdown. The Auger analysis also suggested the presence of Cr-rich oxide layer just after the breakaway oxidation. The results indicated that the rate-determining step in the corrosion attack is surface controlled or diffusion controlled through an oxide layer with fixed thickness over time.

sted, utgiver, år, opplag, sider
2016. Vol. 85, nr 3-4, s. 321-342
Emneord [en]
high temperature corrosion, hydrogen, low oxygen activity environment, stainless steels, water vapor
HSV kategori
Forskningsprogram
Stålformning och ytteknik
Identifikatorer
URN: urn:nbn:se:du-20326DOI: 10.1007/s11085-015-9597-5ISI: 000372876100009Scopus ID: 2-s2.0-84947556095OAI: oai:DiVA.org:du-20326DiVA, id: diva2:875450
Konferanse
4th International Symposium on High-Temperature Oxidation and Corrosion (ISHOC), hakodate, Japan, 23-27 July, 2014
Tilgjengelig fra: 2015-12-01 Laget: 2015-12-01 Sist oppdatert: 2017-12-01bibliografisk kontrollert

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