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Platinum-induced oxidation of chromium in O-2 at 800 °C
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Chemistry.
KTH, Superseded Departments, Chemistry.
2003 (English)In: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 45, no 12, 2697-2703 p.Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
2003. Vol. 45, no 12, 2697-2703 p.
Keyword [en]
chromium; platinum; SIMS; oxidation; surface diffusion
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-7047DOI: 10.1016/S0010-938X(03)00117-3ISI: 000186919100001OAI: oai:DiVA.org:kth-7047DiVA: diva2:11939
Note
QC 20100705Available from: 2007-05-08 Created: 2007-05-08 Last updated: 2010-07-15Bibliographically approved

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