Publicaties

Electrolytic manganese dioxide (EMD) films are electrodeposited from acid MnSO4 solution, targeting equivalent film thicknesses between 25 and 100 nm onto silicon substrates coated with Pt and TiN seed layers. The structure and morphology of the deposited EMD films are characterized and tied to the observed electrochemical performance. Deposition efficiencies as large as 80% are achieved, as determined from Rutherford back scattering (RBS). TEM ...

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 parameters on the oxide film morphology has been studied and correlated with the adhesion results. The ...

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, while anodising at elevated temperatures enhances oxide dissolution, leading to wider pores and rougher ...

Thanks to its excellent corrosion resistance, good mechanical properties and biocompatibility, titanium has been widely used as dental implant material. A passive oxide film formed on titanium surface is responsible for its high corrosion resistance. This study has evaluated the surface characteristics of oxide layers formed on commercially pure titanium samples by anodic treatment and the effect of anodic treatment on their corrosion behaviour. ...

© 2015 Elsevier B.V. All rights reserved. The growth of the dental implant market increases the concern regarding the quality, efficiency, and lifetime of dental implants. Titanium and its alloys are dominant materials in this field thanks to their high biocompatibility and corrosion resistance, but they possess a very low wear resistance. Besides problems related to osteointegration and bacterial infections, tribocorrosion phenomena being the ...

Anodic electrochemical synthesis presents itself as a powerful and rapid method to produce porous metal organic framework (MOF) powders and deposit MOF films onto metal surfaces. Such layers are of interest for adsorptive, catalytic or sensor applications. However, electrochemical MOF synthesis is still in a preliminary stage while a need to better control the process and understand the influences of the process parameters emerges. This work ...

This paper reports on a wafer-level thin film vacuum packaging technology for MEMS. It is based on the fabrication of freestanding porous anodic alumina membranes of a typical thickness of 2 to 3 μm, featuring cylindrical nanopores that are a mere 15-20 nm in diameter (aspect ratio >100). The fabrication process involves in situ perforation of the thin AlOₓ barrier layer present at the bottom of the nanoporous membranes. For the present ...