Publications

Een gedistribueerd softwaresysteem is een complexe compositie van gedist ribueerde applicatiemodules en middlewarediensten. Deze complexiteit is zichtbaar intern in de middleware, tijdens het bouwen ervan, maar ook ex tern in de ondersteunde programmeermodellen en de aangeboden diensten. E r is een groeiende behoefte om deze complexiteit te reduceren, zowel int ern als extern. Dit vereist een betere modulariteit van middlewaredienst en, ...

Het continu schalen van CMOS technologieën maakt het steeds meer uitdagend om geschikte bescherming te voorzien tegen Elektrostatische Ontladingen (ESD). Door het dunner worden van de gate-oxides worden deze meer kwetsbaar voor ESD gebeurtenissen, zelfs zodanig dat traditionele oplossingsmethoden niet meer bruikbaar worden. Momenteel zijn zowel planaire als finfet structuren geschikte mogelijkheden voor de 45 nm CMOS technologie-node en hier ...

Three-dimensional Electron Back Scattering Diffraction (3D-EBSD) is a technique for microstructure characterization that works by sequential sectioning via mechanical polishing, Focused Ion Beam (FIB) milling or layer ablation by laser. In this technique, consecutive steps of sample preparation and EBSD measurement are employed to extract 2D-EBSD sections and to reconstruct the 3D microstructure. The 3D data collected by the serial sectioning ...

We reconstruct the 3-D microstructure of centimetre-sized olivine crystals in rocks from the Almirez ultramafic massif (SE Spain) using combined X-ray micro computed tomography (urn:x-wiley:00222720:media:jmi12598:jmi12598-math-0003-CT) and electron backscatter diffraction (EBSD). The semidestructive sample treatment involves geographically oriented drill pressing of rocks and preparation of oriented thin sections for EBSD from the ...

Oxide scales growing during hot rolling of steel represent an industrial and environmental problem. Tertiary oxide, which starts to form before entering the finishing stands, remains on the steel surface until the end of the process, affecting the final surface quality and the response to downstream processing. Characterizing scale layers and the scale/steel interface in terms of phase morphology, texture, grain structure and chemical ...

Tungsten and its alloys have been extensively studied in order to be used in plasma facing components for future fusion nuclear reactors such as ITER and DEMO. In this work, an evaluation of nano-hardness, microstructure/texture and mechanical behavior using nano-indentation, electron backscatter diffraction (EBSD) and tensile test was performed. The investigated materials were ultra-fine grain lab-scale tungsten and ITER-specification ...

The hydrogen induced blistering and internal cracking behavior of a TRIP-assisted (Transformation Induced Plasticity) high strength steel is investigated. TRIP-assisted steels are multiphase steels with a microstructure consisting out of ferrite, bainite, retained austenite, and some martensite. Each microstructural constituent demonstrates a different behavior in the presence of hydrogen. Additionally, such steels exhibit an austenite to ...

In order to increase the sustainability of metals, a more detailed understanding of the corrosion process is of crucial importance. Current literature often considers corrosion as a purely chemical interaction with a nearly exclusive dependence on compositional effects, while ignoring microstructural and crystallographic properties of the metal surface. Some recent literature data, however, suggest an important effect of microstructural elements ...

Steel containing a high Si-content is mainly used as electrical steel in flux carrying electrical machines. These materials are divided in the categories: grain oriented and non oriented electrical steels, mainly used in transformers and electrical motors, respectively. Their industrial production is normally limited to silicon contents lower than 3.5 m.-%, due to the generation of brittle ordered structures if the Si content is increased beyond ...

© 2015 Acta Materialia Inc. Existing alternatives for the calculation of geometrically necessary dislocation (GND) densities from orientation fields are discussed. Importantly, we highlight the role of reference frames and consider different sources of error. A well-controlled micro cantilever bending experiment on a copper bicrystal has been analyzed by 3-dimensional electron back scatter diffraction (3D EBSD). The GND density is determined ...