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Platinum-induced oxidation of chromium in O-2 at 800 °C
KTH, Tidigare Institutioner                               , Kemi.
KTH, Tidigare Institutioner                               , Kemi.
KTH, Tidigare Institutioner                               , Kemi.
2003 (engelsk)Inngår i: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 45, nr 12, s. 2697-2703Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The effects of porous Pt on the oxidation of Cr at 800degreesC have been studied with the (OSIMS)-O-18 technique, gas phase analysis and XPS. In oxide areas with Pt a pronounced inward oxygen transport takes place and a substantial oxide growth near the Cr substrate is observed. In oxide grown on areas without Pt the counts of CrO ions in SIMS and the binding energy of O (1s) in XPS depend on the distance from the area with Pt. The experimental observations are believed to be a consequence of a high dissociation efficiency of O-2 on areas with Pt in combination with a high diffusivity of O in external and internal oxide surfaces on areas both with and without Pt.

sted, utgiver, år, opplag, sider
2003. Vol. 45, nr 12, s. 2697-2703
Emneord [en]
chromium; platinum; SIMS; oxidation; surface diffusion
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-7047DOI: 10.1016/S0010-938X(03)00117-3ISI: 000186919100001OAI: oai:DiVA.org:kth-7047DiVA, id: diva2:11939
Merknad
QC 20100705Tilgjengelig fra: 2007-05-08 Laget: 2007-05-08 Sist oppdatert: 2017-12-14bibliografisk kontrollert

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