Searched for: author%3A%22Abrahami%2C+S.T.%22
(1 - 14 of 14)
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Madelat, Negin (author), Wouters, Benny (author), Visser, Peter (author), Jiryaeisharahi, Zahra (author), Marcoen, Kristof (author), Abrahami, S.T. (author), Hubin, Annick (author), Terryn, H.A. (author), Hauffman, Tom (author)
In this work, the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in a series of organic coatings is explored. Using an odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach, the diffusion of ions independent from water take-up is analysed. A higher PVC resulted...
journal article 2024
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van Dam, J.P.B. (author), Tiringer, U. (author), Abrahami, S.T. (author), Milošev, I. (author), Terryn, H.A. (author), Kovač, J. (author), Mol, J.M.C. (author)
The sol–gel process is a chemical surface preparation method based on hydrolysis and polycondensation reactions for enhanced adhesion for metallic substrates in adhesive bonding and coating applications. This paper describes an investigation into the effect of the microstructural complexity of two commonly used aerospace aluminium alloys (AAs...
journal article 2024
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Martinez-Viademonte, Mariana Paz (author), Abrahami, S.T. (author), Havigh, Meisam D. (author), Marcoen, Kristof (author), Hack, Theodor (author), Burchardt, Malte (author), Terryn, H.A. (author)
The anodising process parameters (voltage, temperature, and electrolyte) control the morphology and the chemical composition of the resulting anodic oxide film by altering the balance between oxide growth and oxide dissolution reactions. The porosity of the oxide film is reduced by the addition of tartaric acid to a sulfuric acid electrolyte,...
journal article 2022
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Paz Martinez-Viademonte, Mariana (author), Abrahami, S.T. (author), Hack, Theodor (author), Burchardt, Malte (author), Terryn, H.A. (author)
The adhesion capabilities of sulfuric acid and tartaric-sulfuric-acid anodic oxide films on cladded AA2024-T3 aluminium substrates have been investigated in a quantitative manner. A relatively simple, versatile and industrially applicable test methodology based on DIN EN ISO 29862 has been used. In addition, the effect of anodising process...
journal article 2022
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Tiringer, U. (author), van Dam, J.P.B. (author), Abrahami, S.T. (author), Terryn, H.A. (author), Kovač, J. (author), Milošev, I. (author), Mol, J.M.C. (author)
The sol-gel synthesis process is a versatile method used to produce a wide diversity of materials and is being increasingly used as a surface modification method to alter porosity, wettability, catalytic activity, biocompatibility and corrosion performance of underlying substrates. Silane sol–gel films deposited on aluminium and aluminium...
review 2021
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Stepniowski, W.J. (author), Paliwoda, Damian (author), Abrahami, S.T. (author), Michalska-Domańska, M.E. (author), Landskron, Kai (author), Buijnsters, J.G. (author), Mol, J.M.C. (author), Terryn, H.A. (author), Misiolek, Wojciech Z. (author)
Self-organized anodization of copper in 0.1 M Na2CO3 electrolyte was studied in order to obtain nanostructured oxide surface on the metal substrate. Linear sweep voltammetry (LSV) revealed that the most suitable voltage range for anodic film formation is from 3 to 31 V. In this range (except between 3 and 7 V), the oxide is formed as nanorods,...
journal article 2020
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van Dam, J.P.B. (author), Abrahami, S.T. (author), Yilmaz, A. (author), Gonzalez Garcia, Y. (author), Terryn, H.A. (author), Mol, J.M.C. (author)
This work focuses on the effect of surface roughness and surface chemistry on the initial adhesion strength and corrosive de-adhesion properties of adhesive bonds. The adherend used in this study is a S690 low-alloy steel whereas the adhesive is a 2-component epoxy-amine adhesive (Araldite 2015). The steel surface is subjected to different...
journal article 2020
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Frota Sartori, A. (author), Orlando, Stefano (author), Bellucci, Alessandro (author), Trucchi, Daniele M. (author), Abrahami, S.T. (author), Boehme, Thijs (author), Hantschel, Thomas (author), Vandervorst, Wilfried (author), Buijnsters, J.G. (author)
Diamond is known as a promising electrode material in the fields of cell stimulation, energy storage (e.g., supercapacitors), (bio)sensing, catalysis, etc. However, engineering its surface and electrochemical properties often requires costly and complex procedures with addition of foreign material (e.g., carbon nanotube or polymer) scaffolds...
journal article 2018
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Abrahami, S.T. (author), de Kok, J.M.M. (author), Gudla, V.C. (author), Marcoen, Kristof (author), Hauffman, T. (author), Ambat, R. (author), Mol, J.M.C. (author), Terryn, H.A. (author)
Nanoporous anodic aluminum oxides (AAOs) are used as templates in various technological applications, including load-bearing aircraft structures. But in spite of their popularity, the important aspects that control their (dis-)bonding to an organic coating are not fully understood. To study the mechanisms behind the negative effect of fluorides...
journal article 2018
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Abrahami, S.T. (author), de Kok, John M.M. (author), Terryn, H.A. (author), Mol, J.M.C. (author)
For more than six decades, chromic acid anodizing (CAA) has been the central process in the surface pre-treatment of aluminum for adhesively bonded aircraft structures. Unfortunately, this electrolyte contains hexavalent chromium (Cr(VI)), a compound known for its toxicity and carcinogenic properties. To comply with the new strict...
journal article 2017
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Abrahami, S.T. (author), de Kok, John M.M. (author), Gudla, Visweswara C. (author), Ambat, Rajan (author), Terryn, H.A. (author), Mol, J.M.C. (author)
For more than six decades, chromic acid anodizing has been the main step in the surface treatment of aluminum for adhesively bonded aircraft structures. Soon this process, known for producing a readily adherent oxide with an excellent corrosion resistance, will be banned by strict international environmental and health regulations. Replacing...
journal article 2017
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Abrahami, S.T. (author), Hauffman, T. (author), de Kok, John M.M. (author), Terryn, H.A. (author), Mol, J.M.C. (author)
The long-term strength and durability of an adhesive bond is dependent on the stability of the oxide-adhesive interface. As such, changes in the chemistry of the oxide and/or the adhesive are expected to modify the interfacial properties and affect the joint performance in practice. The upcoming transition to Cr(VI)-free surface pretreatments...
journal article 2017
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Stepniowski, W.J. (author), Stojadinović, Stevan (author), Vasilić, Rastko (author), Tadić, Nenad (author), Karczewski, Krzysztof (author), Abrahami, S.T. (author), Buijnsters, J.G. (author), Mol, J.M.C. (author)
Copper foil was anodized in 1 M KOH at potentials ranging from −400 to −100 mV vs. Ag|AgCl electrode. Cyclic voltammetry showed a distinct peak with a maximum at around −150 mV. For anodizing at −100 and −200 mV, nanowires with diameters of ca. 19 and 24 nm respectively were found to be grown. Moreover, photoluminescence and X-ray diffraction...
journal article 2017
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Abrahami, S.T. (author)
For more than six decades, chromic acid anodizing (CAA) has been the central process in the surface pre-treatment of aluminium for adhesively bonded aircraft structures in Europe. Unfortunately, this electrolyte contains hexavalent chromium (Cr(VI)), a compound known for its toxicity and carcinogenic properties. The approaching ban on the use of...
doctoral thesis 2016
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