Swaminathan, S.; Spiegel, M.; Rohwerder, M.: Effect of annealing conditions on the selective oxidation of quarternary model alloy. 4th International Conference on Diffusion in Solids and Liquids, Barcelona, Spain (2008)
Swaminathan, S.; Koll, T.; Pohl, M.; Spiegel, M.: Hot-dip galvanizing simulation of model alloys and industrial steel grades: Correlation between surface chemistry and wettability. GALVATECH `07, 7th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, Osaka, Japan (2007)
Swaminathan, S.; Spiegel, M.: Effect of alloy composition on the selective oxidation of ternary Fe–Si–Cr, Fe–Mn–Cr model alloys. ECASIA 2007, 12th European Conference on Applications of Surface and Interface Analysis, Brussels-Flggey, Belgium (2007)
Auinger, M.; Swaminathan, S.; Rohwerder, M.: The Influence of Oxide Formation on the Diffusion Properties in Iron Alloys - The Thermogravimetric Behaviour in Early Stages of Oxidation. Gordon-Kenan Research Seminar on High Temperature Corrosion and Gordon-Research Conference on High Temperature Corrosion, New London, NH, USA (2011)
Vogel, D.; Swaminathan, S.; Rohwerder, M.; Renner, F. U.: Possibilities for high-temperature corrosion at MPIE. International Symposium on High-temperature Oxidation and Corrosion, Zushi, Japan (2010)
Vogel, A.; Swaminathan, S.; Vogel, D.; Rohwerder, M.: Novel Setup for Metal/Gas Reactions at High Temperature. 6th International Conference on Diffusion in Solids and Liquids: Mass Transfer, Heat Transfer and Microstructure and Properties, Paris, France (2010)
Swaminathan, S.: Selective surface oxidation and segregation upon short term annealing of model alloys and industrial steel grades. Dissertation, Ruhr-Universität, Fakultät für Physik und Astronomie, Bochum, Germany (2007)
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.
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.
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…
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.
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution