Enning, D.; Venzlaff, H.; Garrelfs, J.; Dinh, H. T.; Meyer, V.; Mayrhofer, K. J. J.; Hassel, A. W.; Stratmann, M.; Widdel, F.: Marine sulfate-reducing bacteria cause serious corrosion of iron under electroconductive biogenic mineral crust. Environmental Microbiology 14 (7), pp. 1772 - 1787 (2012)
Beese, P.; Venzlaff, H.; Enning, D.; Mayrhofer, K. J. J.; Widdel, F.; Stratmann, M.: Monitoring anerobic microbially influenced corrosion with electrochemical frequency modulation. 12th Topical Meeting of the International Society of Electrochemistry & XXII International Symposium on Bioelectrochemistry and Bioenergetics of the Bioelectrochemical Society, Bochum, Germany (2013)
Venzlaff, H.; Enning, D.; Widdel, F.; Stratmann, M.; Hassel, A. W.: A new model for microbiologically influenced corrosion. The European Corrosion Congress Eurocorr 2010, Moscow, Russia (2010)
Venzlaff, H.; Widdel, F.; Stratmann, M.; Hassel, A. W.: Microbial corrosion induced by a new highly aggressive SRB strain. 59th Annual Meeting of the International Society of Electrochemistry, Sevilla, Spain (2008)
Venzlaff, H.; Enning, D. R.; Widdel, F.; Stratmann, M.; Hassel, A. W.: Microbial corrosion induced by a highly aggressive SRB strain. 2nd International IMPRS-SurMat Workshop on Surface and Interface Engineering in Advanced Materials, Bochum, Germany (2008)
Venzlaff, H.: Die elektrisch mikrobiell beeinflusste Korrosion von Eisen durch sulfatreduzierte Bakterien. Dissertation, Fakultät für Maschinenbau der Ruhr-Universität, Bochum, Germany (2012)
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.
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.
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.
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.
In this project, we work on a generic solution to design advanced high-entropy alloys (HEAs) with enhanced magnetic properties. By overturning the concept of stabilizing solid solutions in HEAs, we propose to render the massive solid solutions metastable and trigger spinodal decomposition. The motivation for starting from the HEA for this approach…