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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Mills, Douglas J.
University of Northampton
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2017Advances in corrosion protection by organic coatings: what we know and what we would like to knowcitations
- 2016The application of organic coatings in conservation of archaeological objects excavated from the seacitations
- 2016Analysis of electrochemical noise measurement on an organically coated metalcitations
- 2014Steel surface preparation prior to painting and its impact on protective performance of organic coatingcitations
- 2014Effect of hardener variation on protective properties of polyurethane coatingcitations
- 2012Investigation into the effect of nano-silica on the protective properties of polyurethane coatingscitations
- 2011Investigation of morphological and electrical properties of the PMMA coating upon exposure to UV irradiation based on AFM studiescitations
- 2010Effect of different surface preparations prior to painting on the corrosion behaviour and surface activity of mild steel
- 2010The influence of UV light on performance of poly(methyl methacrylate) in regard to dye-sensitised solar cellscitations
- 2010Use of electrochemical methods to examine different surface preparation methods for organic coatings on steelcitations
- 2010Electrochemical characterization of mild steel after different surface preparations
- 2008Using novel electrochemical test methods to aid in the development of low volatile organic compound (VOC) coatings
- 2008Continuing work to enable electrochemical methods to be used to monitor the performance of organic coatings in the fieldcitations
- 2007MPs and lords learn something about corrosion!
- 2001A comparison between conventional macroscopic and microscopic scanning electrochemical methods to evaluate galvanic corrosioncitations
Places of action
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conferencepaper
Effect of different surface preparations prior to painting on the corrosion behaviour and surface activity of mild steel
Abstract
Previous work in our laboratory showed that the type of surface preparation of the steel priorto coating had a dramatic effect on the subsequent corrosion protection afforded in immersiontests and in salt spray testing.Particularly water jetting led to better performance. It isgenerally accepted that factors such as removal of impurities and introducing surfaceroughness to steel to obtain better adhesion through the mechanical interlocking of polymericstructure and the metal surface play a part. However it is postulated that the ease ofbreakdown of the oxide film is also critically important and varies between surfacepreparations. This was investigated in the present study where 5 different surface preparationmethods (abrasive blasting, water-jetting, abrasion, acid pickling and degreasing) wereapplied to the mild steel surface and each resultant surface was characterised usingelectrochemical methods. The Scanning vibrating electrode technique (SVET) was performedin dilute saline water to detect anodic and cathodic sites on the surface and also to determinethe intensity of electrochemical activity at these sites. Scanning electron microscope (SEM)together with energy dispersive X-ray spectroscopy (EDX) was used to characterise thesurface structure and its chemical composition. Changes in open circuit potential have beenmonitored during the time of exposure to electrolyte in order to investigate the general surfaceactivity. The electrochemical impedance spectroscopy (EIS) was employed to analyse thecharge transfer situation on the metal surface. Results using these techniques will be presentedand discussed. An anticipated outcome from this work is development of a simpleelectrochemical method to assess that a metal surface is in a condition suitable for coating.This could also be used as a way of checking that standard pretreatments had been effectiveand assist in the development of new ones