Auinger, M.; Vogel, D.; Vogel, A.; Spiegel, M.; Rohwerder, M.: A novel laboratory set-up for investigating surface and interface reactions during short term annealing cycles at high temperatures. Review of Scientific Instruments 84, 085108 (2013)
Swaminathan, S.; Rohwerder, M.; Rohwerder, M.; Spiegel, M.: Temperature and dew point dependent segregation of phosphorus and sulfur in Fe–Mn–P–S model alloy. Surface and Coatings Technology 205 (16), pp. 4089 - 4093 (2011)
Asteman, H.; Spiegel, M.: A comparison of the oxidation behaviours of Al2O3 formers and Cr2O3 formers at 700 °C - Oxide solid solutions acting as a template for nucleation. Corrosion Science 50 (6), pp. 1734 - 1743 (2008)
Swaminathan, S.; Spiegel, M.: Effect of alloy composition on the selective oxidation of ternary Fe–Si–Cr, Fe–Mn–Cr model alloys. Surface and Interface Analysis 40 (3-4), pp. 268 - 272 (2008)
Mardare, C. C.; Spiegel, M.; Savan, A.; Ludwig, A.: Investigation of thin coatings from Mn–Co system deposited by PVD on metallic interconnects for SOFC Applications. Material Science Forum 595-598, pp. 797 - 804 (2008)
Swaminathan, S.; Koll, T.; Pohl, M.; Wieck, A. D.; Spiegel, M.: Hot-dip galvanizing simulation of model alloys and industrial steel grades: Correlation between surface chemistry and wettability. Steel Res. Int. 79 (1), pp. 66 - 72 (2008)
Asteman, H.; Spiegel, M.: Investigation of the HCl (g) attack on pre-oxidized pure Fe, Cr, Ni and commercial 304 steel at 400 °C. Corrosion Science 49 (9), pp. 3626 - 3637 (2007)
Li, Y. S.; Niu, Y.; Spiegel, M.: High temperature interaction of Al/Si-modified Fe–Cr alloys with KCl. Corrosion Science 49 (4), pp. 1799 - 1815 (2007)
Ruh, A.; Spiegel, M.: Thermodynamic and kinetic consideration on the corrosion of Fe, Ni and Cr beneath a molten KCl-ZnCl2 micture. Corr.Sci. 48, pp. 679 - 695 (2006)
Ruh, A.; Spiegel, M.: Influence of gas phase composition on the kinetics of chloride melt induced corrosion of pure iron. Mater. and Corr. 57, pp. 237 - 243 (2006)
Sánchez Pastén, M.; Spiegel, M.: High temperature corrosion of metallic materials in simulated waste incineration environments at 300-600 °C. Mater. and Corr. 57, pp. 192 - 195 (2006)
Li, Y. S.; Spiegel, M.; Shimada, S.: Corrosion behaviour of model alloys with NaCl–KCl coating. Materials Chemistry and Physics 93 (1), p. 217 - 217 (2005)
Low dimensional electronic systems, featuring charge density waves and collective excitations, are highly interesting from a fundamental point of view. These systems support novel types of interfaces, such as phase boundaries between metals and charge density waves.
In this project, links are being established between local chemical variation and the mechanical response of laser-processed metallic alloys and advanced materials.
In this project, we employ a metastability-engineering strategy to design bulk high-entropy alloys (HEAs) with multiple compositionally equivalent high-entropy phases.
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.
About 90% of all mechanical service failures are caused by fatigue. Avoiding fatigue failure requires addressing the wide knowledge gap regarding the micromechanical processes governing damage under cyclic loading, which may be fundamentally different from that under static loading. This is particularly true for deformation-induced martensitic…
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.
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.
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.