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Early stages of oxidation of uncoated and PVD SiO2 coated FeCrAl foils
Dalarna University, School of Technology and Business Studies, Material Science.
Dalarna University, School of Technology and Business Studies, Material Science.
Dalarna University, School of Technology and Business Studies, Material Science.
Dalarna University, School of Technology and Business Studies, Material Science.
2009 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 203, no 19, 2845-2850 p.Article in journal (Refereed) Published
Abstract [en]

The high temperature oxidation characteristics of uncoated and SiO2 PVD-coated FeCrAl foils have been investigated when exposed to laboratory air at 1000 °C during 1, 2, 4, 8, 16, 32 and 60 min. The oxidized samples were characterized using SEM, EDS, AES and SIMS. The results show that the presence of a 100 nm thin SiO2 PVD coating significantly reduces the oxidation rate of the FeCrAl foil during early stages of oxidation. The decreased oxidation rate displayed by the SiO2 coated FeCrAl foil is the result of the SiO2 coating acting as an initial diffusion barrier promoting the formation of a predominantly inward growing Al2O3 layer during oxidation. Additionally, by using EDS analysis together with AES and SIMS depth profiling it was shown that the total concentration of Si in the grown oxide scale decreased during oxidation.

Place, publisher, year, edition, pages
2009. Vol. 203, no 19, 2845-2850 p.
Keyword [en]
FeCrAl, SiO2, PVD coating, high temperature oxidation, AES, SIMS
National Category
Manufacturing, Surface and Joining Technology
Identifiers
URN: urn:nbn:se:du-4715DOI: 10.1016/j.surfcoat.2009.02.128ISI: 000267195900005OAI: oai:dalea.du.se:4715DiVA: diva2:520195
Available from: 2010-05-24 Created: 2010-05-24 Last updated: 2015-10-06Bibliographically approved

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Engkvist, JosefinGrehk, MikaelBexell, UlfOlsson, Mikael
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CiteExportLink to record
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Citation style
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  • chicago-author-date
  • chicago-note-bibliography
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  • nn-NB
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