Analysis of plasma degreased aluminium foil with XPS

Residuals of lubricants adhere as very thin layers of hydrocarbons to the surfaces of cold rolled aluminium foil. Subsequent processing of the foil requires a cleaning process. In this study, a new approach to degrease the aluminium is examined that employs an atmospheric pressure plasma treatment o...

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Bibliographic Details
Published inSurface engineering Vol. 29; no. 5; pp. 396 - 401
Main Authors Klingner, S, Voigts, F, Viöl, W, Maus-Friedrichs, W
Format Journal Article
LanguageEnglish
Published London, England Taylor & Francis 01.06.2013
SAGE Publications
Maney
Institute of Materials, Minerals and Mining
Subjects
Aluminium
Applied sciences
Atmospheric
DBD
Degrease
Exact sciences and technology
Hydrocarbon
Metals. Metallurgy
Plasma
Production techniques
Surface treatment
XPS
Plasma
Hydrocarbon
Degrease
DBD
XPS
Aluminium
Atmospheric
Thin sheet
Photoelectron spectrometry
Surface treatment
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Summary:Residuals of lubricants adhere as very thin layers of hydrocarbons to the surfaces of cold rolled aluminium foil. Subsequent processing of the foil requires a cleaning process. In this study, a new approach to degrease the aluminium is examined that employs an atmospheric pressure plasma treatment of the surface. X-ray photoelectron spectroscopy is used to detect hydrocarbon layers on the surface of aluminium foil. The detected carbon content is a measure of the amount of residual lubricants remaining on the surface. Before any treatment, the proportion of carbon on the foil surface amounts to 19% corresponding to a lubricant layer thickness of 3·3 nm. Plasma degreasing reduces the carbon proportion to ∼6% corresponding to a layer thickness of 1·3 nm. With conventional heating, there is a layer thickness of ∼1 nm remaining on the foil surface. Still, the plasma degreasing is a less time and energy consuming cleaning process.
ISSN:0267-0844
1743-2944
DOI:10.1179/1743294413Y.0000000129