Revue des Sciences Fondamentales Appliquées
Volume 7, Numéro 1, Pages 103-138104
2015-01-01

Scanning Kelvin Probe Applied To Localised Corrosion



Authors : Hussain A. . Haque S. K. M. .

Abstract

This paper focuses on specific applications of the SKP system. The instrument is calibrated, using different thickness of a model polymer Poly Vinyl Butyral (PVB) on mild steel and on galvanised steel.Artificial defects are used to show how the instrument is capable of detecting a localised corrosion cell and its ability to picture the delamination of the coating from the steel substrate. An industrial application is undertaken with the instrument, where epoxy coated galvanised steel; with an introduced defect in the coating and various added inhibitors. Chromates and chromate replacements have been studied.

Keywords

Scanning Kelvin probe; Poly Vinyl Butyral; Localised Corrosion; Epoxy Coating.

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