Asteman, H.; Spiegel, M.: Investigation of the chlorine attack caused by HCl (g) on oxide scales formed on pre-oxidized pure metals and commercial alloys. EUROCORR 2006, Maastricht, The Netherlands (2006)
Asteman, H.; Lill, K. A.; Hassel, A. W.; Spiegel, M.: Preparation and electrochemical characterisation by SDC of thin Cr2O3, Fe2O3 and (Fe,Cr)2O3 films, thermally grown on Pt-substrates. 6th Int. Symposium on Electrochemical Micro and Nanosystem Technologies, Düsseldorf, Germany (2006)
Spiegel, M.: Laboruntersuchungen zur Korrosion in thermischen Anlagen. Fachtagung: Werkstoffe und Verfahren der Energietechnik, Sulzbach-Rosenberg, Germany (2006)
Spiegel, M.: Einfluss der Veränderungen von gasförmigem Chloranteil und Rohrwandtemperaturen auf die Korrosion unter Belägen. VDI Wissensforum: Beläge und Korrosion in Großfeuerungsanlagen, Hannover, Germany (2006)
Spiegel, M.; Stein, F.; Pöter, B.: Initial Stages of Oxide Growth on Fe–Al Alloys. 3rd Disc.Meeting on the Development of Innovative Iron Aluminium Alloys, Mettmann-Düsseldorf, Germany (2006)
Asteman, H.; Spiegel, M.: Investigation of the chemical breakdown of protective oxides formed on pre-oxidized alloys caused by HCl (g) and H2O (g). Eurocorr 2005, Lisbon, Portugal (2005)
Asteman, H.; Lill, K.; Hassel, A. W.; Spiegel, M.: Local Measurements of the Semi conducting Properties of alpha-Fe2O3 and Cr2O3 Films by Impedance Measurement using the Scanning Droplet Cell Technique. 9th International Symposium on the Passivity of Metals and Semiconductors, Paris, France (2005)
Park, E.; Spiegel, M.: Development and Composition of the High Temperature Oxide Film Grown on Fe-15Cr during Annealing. Passivity 9, Paris, France (2005)
In this project we conduct together with Dr. Sandlöbes at RWTH Aachen and the department of Prof. Neugebauer ab initio calculations for designing new Mg – Li alloys. Ab initio calculations can accurately predict basic structural, mechanical, and functional properties using only the atomic composition as a basis.
The wide tunability of the fundamental electronic bandgap by size control is a key attribute of semiconductor nanocrystals, enabling applications spanning from biomedical imaging to optoelectronic devices. At finite temperature, exciton-phonon interactions are shown to exhibit a strong impact on this fundamental property.
Oxides find broad applications as catalysts or in electronic components, however are generally brittle materials where dislocations are difficult to activate in the covalent rigid lattice. Here, the link between plasticity and fracture is critical for wide-scale application of functional oxide materials.
The project Hydrogen Embrittlement Protection Coating (HEPCO) addresses the critical aspects of hydrogen permeation and embrittlement by developing novel strategies for coating and characterizing hydrogen permeation barrier layers for valves and pumps used for hydrogen storage and transport applications.
In this project we study - together with the department of Prof. Neugebauer and Dr. Sandlöbes at RWTH Aachen - the underlying mechanisms that are responsible for the improved room-temperature ductility in Mg–Y alloys compared to pure Mg.
Efficient harvesting of sunlight and (photo-)electrochemical conversion into solar fuels is an emerging energy technology with enormous promise. Such emerging technologies depend critically on materials systems, in which the integration of dissimilar components and the internal interfaces that arise between them determine the functionality.
Enabling a ‘hydrogen economy’ requires developing fuel cells satisfying economic constraints, reasonable operating costs and long-term stability. The fuel cell is an electrochemical device that converts chemical energy into electricity by recombining water from H2 and O2, allowing to generate environmentally-friendly power for e.g. cars or houses…
This study investigates the mechanical properties of liquid-encapsulated metallic microstructures created using a localized electrodeposition method. By encapsulating liquid within the complex metal microstructures, we explore how the liquid influences compressive and vibrational characteristics, particularly under varying temperatures and strain…