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Surface chemistry and reactivity of skin-passed hot dipgalvanized coating

Published online by Cambridge University Press:  28 January 2009

J.-M. Mataigne ,
V. Vaché  and
M. Repoux
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Abstract

GI coatings are covered by a very thin aluminum layerthat precipitates after wiping. Anisotropic growing of zinccrystals during solidification induces a strong basal texturein GI coatings. Skin-pass induced changes in GI coatingsurface chemistry, crystallography and reactivity have beenassessed. Local coating analyses have been performed (XPS,TOF-SIMS) in order to describe local effects of roughnessindentation during skin-pass on coating characteristics. A laboratory bi-crushing device supported by XRD and EBSDhas been used to analyze the aluminum oxide behaviourduring deformation and ageing. Reactivity of such surfaceshas been tested using fatty acids.

Type
Research Article
Information
Metallurgical Research & Technology , Volume 106 , Issue 1: Blast FurnaceSteelmakingGalvanizing , January 2009 , pp. 41 - 47
Copyright
© La Revue de Métallurgie, 2009

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