Publicaties

In this work, a novel approach based on the application of dual ORP-EIS is proposed to identify the lateral water diffusion in intact coated metals from the area exposed to the electrolyte to the adjacent non-exposed area. As such, the electrochemical response of the exposed area and non-exposed area with a certain distance from the exposed area is collected simultaneously using a dual front-end (analog potentiostat). Employing this approach, ...

Bora-Baricha-Tullu Moye is a Late Quaternary volcanic system in the Main Ethiopian Rift, characterised by products of both explosive and effusive volcanic eruptions. The petrological and geochemical characteristics of the volcanic products are investigated using a combination of petrography, major and trace element whole rock analyses and in-situ major element analyses of phenocryst phases, matrix glass and melt inclusions. The bulk rock ...

This research investigates the deposition mechanism of a hybrid Zr-aminosilane conversion coating as a replacement for the conventional pretreatment systems on a zinc substrate. The traditional Zr-based conversion treatment has been optimized by the addition of both Cu as an accelerator and aminosilane as an adhesion promotor. The deposition mechanism was unraveled using complementary surface analytical techniques such as XPS, FEG-AES, EDX, ...

This work investigated the chemical and electrochemical mechanisms of localised corrosion triggered by CaS·xMgO·yAl2O3·TiN complex inclusions in high strength low alloy steel (HSLAS) under a simulated marine environment. Special focus was given to the role of the TiN portion of the inclusion on the initiation and growth of the corrosion pits. The thermodynamic process of pitting initiation was investigated by Gibbs free energy, Pourbaix ...